@phdthesis{Vergin2008, author = {Vergin, Annika}, title = {Charakterisierung von Metallosupramolekularen Polyelektrolyten mittels analytischer Ultrazentrifugation}, address = {Potsdam}, pages = {94 S.}, year = {2008}, language = {de} } @book{KoetzKosmella2007, author = {Koetz, Joachim and Kosmella, Sabine}, title = {Polyelectrolytes and nanoparticles}, series = {Springer laboratory manuals in polymer science}, journal = {Springer laboratory manuals in polymer science}, publisher = {Springer-Verlag}, address = {Heidelberg}, isbn = {3-540-46381-X}, pages = {105 S.}, year = {2007}, language = {en} } @article{KoetzAndresKosmellaetal.2006, author = {Koetz, Joachim and Andres, S. and Kosmella, Sabine and Tiersch, Brigitte}, title = {BaSO4 nanorods produced in polymer-modified bicontinuous microemulsions}, issn = {0927-6440}, doi = {10.1163/156855406777408629}, year = {2006}, abstract = {The influence of the water soluble polymer poly(ethylene glycol) (PEG) on structure formation in the quasiternary system sodium dodecylsulfate (SDS)/pentanol-xylene/water was checked by means of conductometry, rheology, and micro differential calorimetry. The polymer induces the formation of an isotropic phase channel between the o/w and w/o microemulsion. The transition from the normal as well as from the inverse micellar to the bicontinuous phase range can be detected by conductometry, rheology as well as micro-DSC. As a result of polymer-surfactant interactions, the spontaneous curvature of the surfactant film is changed and a sponge phase is formed. The bicontinuous phase is characterized by a moderate shear viscosity, a Newtonian flow behaviour, and the disappearence of interphasal water in the heating curve of the micro-DSC. When the polymer-modified bicontinuous phase is used as a template phase for the nanoparticle formation, spherical BaSO4 nanoparticles were formed. During the following solvent evaporation process the primarily formed spherical nanoparticles aggregate to nanorods and triangular structures due to the non-restriction of the bicontinuous template phase in longitudinal direction}, language = {en} } @article{EngelhardKumkeLoehmannsroeben2006, author = {Engelhard, Sonja and Kumke, Michael Uwe and L{\"o}hmannsr{\"o}ben, Hans-Gerd}, title = {Examples of the application of optical process and quality sensing (OPQS) to beer brewing and polyurethane foaming processes}, issn = {1618-2642}, doi = {10.1007/s00216-005-3364-4}, year = {2006}, abstract = {Optical methods play an important role in process analytical technologies (PAT). Four examples of optical process and quality sensing (OPQS) are presented, which are based on three important experimental techniques: near- infrared absorption, luminescence quenching, and a novel method, photon density wave (PDW) spectroscopy. These are used to evaluate four process and quality parameters related to beer brewing and polyurethane (PU) foaming processes: the ethanol content and the oxygen (O-2) content in beer, the biomass in a bioreactor, and the cellular structures of PU foam produced in a pilot production plant}, language = {en} } @article{KammKammSchmidtetal.2006, author = {Kamm, Birgit and Kamm, Michael and Schmidt, Matthias and Starke, Ines and Kleinpeter, Erich}, title = {Chemical and biochemical generation of carbohydrates from lignocellulose-feedstock (Lupinus nootkatensis) : quantification of glucose}, issn = {0045-6535}, doi = {10.1016/j.chemosphere.2005.03.073}, year = {2006}, abstract = {Different chemical and enzymatic methods were applied for the hydrolysis of main stems from Lupinus nootkatensis (harvest November 2002). The whole process (all steps) is based on the lignocellulose-feedstock biorefinery regime. The acid hydrolysis of L. was performed with concentrated hydrochloric acid; advantages in this process are exothermic hydrolysis and the possibility of acid recovery. Enzymatic hydrolysis achieved high yields of fermentable carbohydrates (regarding to input cellulose) with high selectivity. However, this way requires the generation of cellulose from L. by chemical pulping. Monosaccharide derivatives thus obtained were identified by their GC retention times and the corresponding MS fragmentation. Hexamethyldisilazane was used as derivatization reagent to prepare the trimethylsilyl derivatives of the carbohydrates and of the degradations products of cellulose from the different fractions. The glucose content was quantified by GC peak integration with respect to an internal standard.}, language = {en} } @article{KumkeEidnerKrueger2005, author = {Kumke, Michael Uwe and Eidner, Sascha and Kr{\"u}ger, Tobias}, title = {Fluorescence quenching and luminescence sensitization in complexes of Tb3+ and Eu3+ with humic substances}, year = {2005}, abstract = {Intrinsic fluorescence quenching of humic substances (HS) and the sensitization of Ln(3+) luminescence (Ln3+ Tb3+, Eu3+) in HS complexes were investigated. Both measurements yielded complementary information on the complexation of metals by HS. Large differences between fulvic acids(FA)and humic acids (HA) were found. From time-resolved luminescence measurements it is concluded that a combination of energy transfer and energy back transfer between HS and Ln(3+) is responsible for the observed luminescence decay characteristics. In the case of Eu3+, an additional participation of charge-transfer states is suggested. A new concept for the evaluation of the sensitized luminescence decays of Ln(3+) was adapted}, language = {en} } @article{ApitzBellDamgaardetal.2005, author = {Apitz, Sabine E. and Bell, Elanor M. and Damgaard, Lars and Gilbert, Franck and Glud, R and Hall, P. O. J. and Kershaw, P. J. and Nickel, L and Parker, R and Rabouille, Christophe and Shimmield, Grahamm and Solan, Martin and Soltwedel, Thomas and Spagnoli, Federico and Witte, Ursula}, title = {Coastal Ocean Benthic Observatories (COBO) : integrated tools for the in situ observation and study of benthic ecosystem biogeochemical processes}, year = {2005}, language = {en} } @article{StrehmelSarkerLahtietal.2005, author = {Strehmel, Veronika and Sarker, A. M. and Lahti, P. M. and Karasz, F. E. and Heydenreich, Matthias and Wetzel, Hendrik and Haebel, Sophie and Strehmel, Bernd}, title = {One- and two-photon photochemistry and photophysics of poly(arylenevinylene)s containing a biphenyl moiety}, issn = {1439-4235}, year = {2005}, abstract = {Photochemical and photophysical properties were investigated for poly(arylenevinylene)s containing a flexible biphenyl "hinge" unit by applying one-photon (OP) and two-photon (TP) excitation to explore excited-state properties. The poly(arylenevinylene)s were poly[(2,5-dihexyloxy-p-phenylenevinylene)-alt-(4,4'-dihexyloxy-3,3'-biph enylenevinylene)] (1), poly[(2,5-dihexyloxy-p-phenylenevinylene)-alt-(2,2'-dihexyloxy-3,3'-biph enylenevinylene)] (2), and poly[(2,5-dihexyloxy-p-phenylenevinylene)-alt-(2,2'-biphenylene-vinylene )] (3). Effective emission quantum yields and related photonic properties were evaluated on a realistic per-chromophore basis using effective conjugation lengths based on the Strickler-Berg relationship. intramolecular photocyclization was deduced to occur in the one case where the biphenyl molecular connectivity permitted the reaction, based on matrix- assisted loser desorption/ionization time-of-flight (MALDI-TOF), heteronuclear multiple-quantum coherence (HMQC)-NMR, and gel-permeation chromatography (GPC) results. The various photoprocesses could be induced by either OP or TP excitation, though the first excited singlet state is the photoactive state. The higher excitation energy 1 of the TP excited state favors indirect population of the S, state by electronic coupling between the TP and OP excited states [lambda(max)(TPE) (nm): 726; delta (GM)([9]): 1 = 229, 2 = 215, 3 = 109). Photochemical processes occurring from the lowest OP excited state (S-1) could therefore also be indirectly induced by TP excitation}, language = {en} } @article{RitschelKuntzZulicke2005, author = {Ritschel, Thomas and Kuntz, Philip J. and Zulicke, Lutz}, title = {Structure and dynamics of cationic van-der-Waals clusters : I. Binding and structure of protonated argon clusters}, year = {2005}, abstract = {The geometric structure and bonding properties of medium-sized ArnH+ clusters (n = 2-35), in which a proton is wrapped up in a number of Ar atoms, are investigated by applying a diatomics-in-molecules (DIM) model with ab-initio input data generated by means of multi-reference configuration-interaction (MRCI) computations. For the smaller complexes, n = 2-7, cross-checking calculations employing the coupled-cluster approach (CCSD) with the same one-electron atomic basis set as for the input data calculations (aug-cc-pVTZ from Dunning), show good agreement thus justifying the extension of the DIM study to larger n. Local minima of the multi-dimensional potential-energy surfaces (PES) are determined by combining a Monte-Carlo sampling followed, for each generated point, by a steepest-descent optimization procedure. For the electronic ground state of the ArnH+ clusters, the global minimum (corresponding to the most stable structure of the cluster) as well as secondary minima are found and analyzed. The structural and energetic data obtained reveal the building-up regularities for the most stable structures and make it possible to formulate a simple increment scheme. The low-lying excited states are also calculated by the DIM approach; they all turn out to be globally repulsive}, language = {en} } @article{Loehmannsroeben2005, author = {L{\"o}hmannsr{\"o}ben, Hans-Gerd}, title = {Laser-induced fluorescence (LIF) spectroscopy and laser-based ion mobility (IM) spectrometry for in-situ analysis of contaminated soils}, year = {2005}, language = {en} } @article{LoehmannsroebenLau2005, author = {L{\"o}hmannsr{\"o}ben, Hans-Gerd and Lau, Steffen}, title = {Isotope selectivity in environmental monitoring : NIR diode laser spectroscopy for isotope-selective sensing of soil-respired carbon dioxide}, year = {2005}, language = {en} } @misc{KoetzReicheltKosmellaetal.2005, author = {Koetz, Joachim and Reichelt, S. and Kosmella, Sabine and Tiersch, Brigitte}, title = {Recovery of nanoparticles produced in phosphatidylcholine-based template phases}, issn = {0021-9797}, year = {2005}, abstract = {This paper focuses on the characterization and use of polymer-modified phosphatidylcholine (PC)/sodium dodecyl sulfate (SDS)-based inverse microemulsions as a template phase for BaSO4 nanoparticle formation. The area of the optically clear inverse microemulsion phase in the isooctane/hexanol/water/PC/SDS system is not significantly changed by adding polyelectrolytes, i.e., poly(diallyldimethylammonium chloride) (PDADMAC), or amphoteric copolymers of diallyldimethylammonium chloride and maleamid acid to the SDS-modified inverse microemulsion. Shear experiments show non- Newtonian flow behavior and oscillation experiments show a frequency-dependent viscosity increase (dilatant behavior) of the microemulsions. Small amounts of bulk water were identified by means of differential scanning calorimetry. One can conclude that the macromolecules are incorporated into the individual droplets, and polymer-filled microemulsions are formed. The polymer-filled microemulsions were used as a template phase for the synthesis of BaSO4 nanoparticles. After solvent evaporation the nanoparticles were redispersed in water and isooctane, respectively. The polymers incorporated into the microemulsion are involved in the redispersion process and influence the size and shape of the redispersed BaSO4 particles in a specific way. The crystallization process mainly depends on the type of solvent and the polymer component added. In the presence of the cationic polyelectrolyte PDADMAC the crystallization to larger cubic crystals is inhibited, and layers consisting of polymer-stabilized spherical nanoparticles of BaSO4 (6 nm in size) will be observed. (c) 2004 Elsevier Inc. All rights reserved}, language = {en} } @article{KammKamm2004, author = {Kamm, Birgit and Kamm, Michael}, title = {Biorefinery : Carbohydrate line : Product line lactic acid}, issn = {0065-7727}, year = {2004}, language = {en} } @article{DoscheKumkeLoehmannsroebenetal.2004, author = {Dosche, Carsten and Kumke, Michael Uwe and L{\"o}hmannsr{\"o}ben, Hans-Gerd and Ariese, Freek and Bader, Arjen N. and Gooijer, Cees and Miljanic, Ognjen S. and Iwamoto, M. and Vollhardt, K. Peter C. and Puchta, Ralph and Hommes, N. J. R. V.}, title = {Deuteration effects on the vibronic structure of the fluorescence spectra and the internal conversion rates of triangular [4]phenylene}, issn = {1463-9076}, year = {2004}, abstract = {Deuteration effects on the vibronic structure of the emission and excitation spectra of triangular [ 4] phenylene (D-3h [4]phenylene) were studied using laser-excited Shpol'skii spectroscopy (LESS) in an octane matrix at 4.2 K. For correct assignment of the vibrational modes, the experimental results were compared with calculated frequencies (B3LYP/6-31G*). CH vibrations were identified by their characteristic isotopic shifts in the spectra of deuterated triangular [4]phenylenes. Two CC stretching modes, at 100 cm(-1) and 1176 cm(-1), suitable as probes for bond strength changes in the excited state, were identified. The isotope effect on the internal conversion rates of triangular [4] phenylene was evaluated from measurements of temperature dependent lifetime. Isotope dependency and the magnitude of the internal conversion rates indicate that internal conversion in triangular [4] phenylene is most likely induced by CH vibrations. The results obtained by LESS and lifetime measurements were compared with PM3 PECI calculations of the excited state structure. The theoretical results and the relation between ground and excited state vibration energies of the 1176 cm(-1) probe vibration indicate a reduction of bond alternation of the central cyclohexatriene ring in the excited state}, language = {en} } @article{KammKamm2004, author = {Kamm, Birgit and Kamm, Michael}, title = {Polycarnitine : a new biomaterial}, issn = {0065-7727}, year = {2004}, language = {en} } @article{KoetzBahnemannLucasetal.2004, author = {Koetz, Joachim and Bahnemann, Jennifa and Lucas, Gordon and Tiersch, Brigitte and Kosmella, Sabine}, title = {Polyelectrolyte-modified microemulsions as new templates for the formation of nanoparticles}, issn = {0927-7757}, year = {2004}, abstract = {The paper is focused on the formation and redispersion of monodisperse BaSO4 nanoparticles in polyelectrolyte- modified microemulsions. It is shown that a cationic polyelectrolyte of low molar mass, e.g. poly(dially1dimethylammonium chloride) (PDADMAC), can be incorporated into the individual inverse microemulsion droplets (L2 phase) consisting of heptanol, water, and an amphoteric surfactant with a sulfobetaine head group. These PDADMAC- filled microemulsion droplets can be successfully used as a template phase for the nanoparticle formation. The monodisperse BaSO4 nanoparticles are produced by a simple mixing procedure and can be redispersed after solvent evaporation without a change in particle dimensions. Dynamic and electrophoretical light scattering in combination with sedimentation experiments in the analytical Ultracentrifuge of the redispersed powder show polyelectrolyte-stabilized nanoparticles with diameters of about 6 nm. The polyelectrolyte shows a "size control effect", which can be explained by the polyelectrolyte-surfactant interactions in relation to the polyelectrolyte-nanoparticle interactions during the particle growth, solvent evaporation and redispersion process. However, the approach used here opens away to produce different types of polyelectrolyte-stabilized nanoparticles (including rare metals, semiconductors, carbonates or oxides) of very small dimensions. (C) 2004 Elsevier B.V. All rights reserved}, language = {en} } @article{MahapatraRitschel2003, author = {Mahapatra, Susanta and Ritschel, Thomas}, title = {Multistate vibronic interactions and nonadiabatic wave packet dynamics in the second photoelectron band of chlorine dioxide}, year = {2003}, abstract = {We report theoretical investigations on the second photoelectron band of chlorine dioxide molecule by ab initio quantum dynamical methods. This band exhibits a highly complex structure and represents a composite portrait of five excited energetically close-lying electronic states of ClO2+. Much of this complexity is likely to be arising due to strong vibronic interactions among these electronic states - which we address and examine herein. The near equilibrium MRCI potential energy surfaces (PESs) of these five cationic states reported by Peterson and Werner [J. Chem. Phys. 99 (1993) 302] for the C2v configuration, are extended for the Cs geometry assuming a harmonic vibration along the asymmetric stretching mode. The strength of the vibronic coupling parameters of the Hamiltonian are calculated by ab initio CASSCF-MRCI method and conical intersections of the PESs are established. The diabatic Hamiltonian matrix is constructed within a linear vibronic coupling scheme and the resulting PESs are employed in the nuclear dynamical simulations, carried out with the aid of a time-dependent wave packet approach. Companion calculations are performed for transitions to the uncoupled electronic states in order to reveal explicitly the impact of the nonadiabatic coupling on the photoelectron dynamics. The theoretical findings are in good accord with the experimental observations. The femtosecond nonradiative decay dynamics of ClO2+ excited electronic states mediated by conical intersections is also examined and discussed.}, language = {en} } @article{PlantenbergKoetz2001, author = {Plantenberg, Thomas and Koetz, Joachim}, title = {Liquid Crystalline Polyanion/Polycation/Water Systems}, year = {2001}, language = {en} } @phdthesis{Willert2001, author = {Willert, Mirjam A.}, title = {Prinzipien und Anwendungsm{\"o}glichkeiten nichtw{\"a}ßriger und inverser Miniemulsionen}, publisher = {Cuvillier}, address = {G{\"o}ttingen}, isbn = {3-89873-329-7}, pages = {137 S.}, year = {2001}, language = {de} } @phdthesis{Polarz2001, author = {Polarz, Sebastian}, title = {Konzepte der Nanochemie auf der Basis von por{\"o}sen Materialien}, pages = {117 S.}, year = {2001}, language = {de} } @phdthesis{Krasteva2001, author = {Krasteva, Nadejda}, title = {Influence of soluble sugars and DMSO on interactions and phase behaviour of phospholipid monolayers, thin foam films and bilayer dispersions}, pages = {158 S.}, year = {2001}, language = {en} } @phdthesis{Rudloff2001, author = {Rudloff, Jan}, title = {Doppelthydrophile Blockcopolymere : Synthese und Einsatz in der biomimetischen Morphosynthese von CaCO3}, pages = {116 S.}, year = {2001}, language = {de} } @phdthesis{Drechsler2001, author = {Drechsler, Ulrich}, title = {Statische Lichtstreuung an Cellulose in L{\"o}sungsmittelsystemen mit N-Methylmorpholin-N-oxid}, pages = {94 S.}, year = {2001}, language = {de} } @phdthesis{Tiarks2001, author = {Tiarks, Franca}, title = {Neue Strukturen und Synthesen durch die Miniemulsionspolymerisation: Polyaddition, Nanokapseln und Hybridpartikel}, publisher = {Shaker}, address = {Aachen}, isbn = {3-8265-8997-1}, issn = {0945-070X}, pages = {158 S.}, year = {2001}, language = {de} } @phdthesis{Sapich2001, author = {Sapich, Beate}, title = {Einfluss photochemischer Prozesse auf Dynamik und Ordnung photochromer Polymere}, pages = {109 S.}, year = {2001}, language = {de} } @phdthesis{Smarsly2001, author = {Smarsly, Bernd}, title = {Charakterisierung por{\"o}ser Materialien mit Methoden der Kleinwinkelstreuung}, pages = {117 S.}, year = {2001}, language = {de} } @phdthesis{Schmitt2001, author = {Schmitt, Cristopher}, title = {Endfunktionalisierte Polyfluorene und konjugierte Blockcopolymere auf Polyfluorenbasis}, pages = {114 S.}, year = {2001}, language = {de} } @phdthesis{Koehler2001, author = {Koehler, Bernhard}, title = {Chirale Makrozyklen und Polymere aus Oligoarylen- und Spiroindan-Bausteinen}, pages = {119 S.}, year = {2001}, language = {de} } @phdthesis{Lauter2001, author = {Lauter, Robert}, title = {Struktur von Monoschichten bipolarer Amphiphile an der Wasser-Luft Grenzfl{\"a}che}, pages = {101 S.}, year = {2001}, language = {de} } @phdthesis{Moya2001, author = {Moya, Sergio Enrique}, title = {Architecture, permeability, electrical and mechanical properties of polyelectrolyte lipid composite capsules}, pages = {138 S.}, year = {2001}, language = {en} } @article{KoetzKosmella2001, author = {Koetz, Joachim and Kosmella, Sabine}, title = {Interactions between Polyelectrolytes and Kaolin}, year = {2001}, language = {en} } @book{BechmannSchmidtElschenbroichetal.2001, author = {Bechmann, Wolfgang and Schmidt, Joachim and Elschenbroich, Christoph and Hensel, Friedrich and Hopf, Henning}, title = {Einstieg in die Physikalische Chemie f{\"u}r Nebenf{\"a}chler}, series = {Teubner Studienb{\"u}cher Chemie}, journal = {Teubner Studienb{\"u}cher Chemie}, publisher = {Vieweg+Teubner Verlag}, address = {Wiesbaden}, isbn = {3-519-00352-X}, doi = {10.1007/978-3-322-94876-2}, pages = {303 S.}, year = {2001}, abstract = {Mit einer ausgewogenen Stoffauswahl wird der Leser an das Studium der Physikalischen Chemie herangef{\"u}hrt. Das Verst{\"a}ndnis der Theorie wird durch zahlreiche Aufgabenstellungen und die Angabe ihrer L{\"o}sungswege erleichtert. Das vorliegende Buch gibt dem Studenten dar{\"u}ber hinaus Anregungen f{\"u}r ausgew{\"a}hlte Experimente zu den behandelten Teilgebieten. In der Durchf{\"u}hrung und Auswertung der Experimente kann der Student erneut {\"u}berpr{\"u}fen, wie gut es ihm gelungen ist, ein Grundverst{\"a}ndnis f{\"u}r physikalisch-chemische Zusammenh{\"a}nge zu entwickeln.}, language = {de} } @article{KoetzKosmellaBeitz2001, author = {Koetz, Joachim and Kosmella, Sabine and Beitz, Toralf}, title = {Self-assembled Polyelectrolyte Systems}, year = {2001}, language = {en} } @article{HeinzeHeinzeGrotheetal.2001, author = {Heinze, Thomas and Heinze, Ute and Grothe, Carsten and Koetz, Joachim and Lazik, Waldemar}, title = {Starch derivatives of high degree of functionalization : 4. Homogeneous tritylation of starch an subsequent carboxymethylation}, year = {2001}, language = {en} } @article{KoetzBogenHeinzeetal.2001, author = {Koetz, Joachim and Bogen, Iris and Heinze, Thomas and Heinze, Ute and Kulicke, Werner-Michael and Lange, Silke}, title = {Pecularities in the physico-chemical behaviour of non-statistically substituted carboxymethylcelluloses}, year = {2001}, language = {en} } @article{Strehmel2001, author = {Strehmel, Bernd}, title = {Fluorescence Probes for Material Science}, year = {2001}, language = {en} } @article{KalliesMeier2001, author = {Kallies, Bernd and Meier, R.}, title = {The electronic structure od 3 [M(H20)6)3+ions from Sc(III)till Fe (III) : a quantum mechanical study based on DFT computations and natural bond orbital analyses}, year = {2001}, language = {en} } @article{Illenseer2001, author = {Illenseer, C.}, title = {Investigation of ion-molecule collisions with laser-based ion mobility spectrometry}, year = {2001}, language = {en} } @article{StrehmelHenbestSarkeretal.2001, author = {Strehmel, Bernd and Henbest, K. B. and Sarker, A. M. and Malpert, J. H. and Chen, D. Y. and Rodgers, M. A. J. and Neckers, D. C.}, title = {Ion induced man ipulation of photochemical pathways in crown ether compounends based on fluorinated oligophenylenevinylenes}, publisher = {Journal of nanoscience and nanotechnology. - 1 (2001), 1, S. 107 - 124}, year = {2001}, language = {en} } @article{BeitzKoetzWolfetal.2001, author = {Beitz, Toralf and Koetz, Joachim and Wolf, Gunter and Kleinpeter, Erich and Friberg, Stig E.}, title = {Poly(N-vinyl-2-pyrrolidone) and 1-octyl-2-pyrrolidinone modified ionic microemulsions}, year = {2001}, language = {en} } @article{SchaelReich2001, author = {Schael, Frank and Reich, Oliver}, title = {In-situ-Analytik heterogener Medien mit frequenz- und leistungsmodulierten Diodenlasern}, year = {2001}, abstract = {Electronic intensity and frequency modulation of diode lasers enables new perspectives for highly sensitive analytical in-situ techniques. For analyis of "heterogeneous" media, which may consist of coexisting gaseous, liquid, and solid phases and often show multiple light scattering, non-invasive techniques with outstanding performance characteristics can be developed. Analysis of photon density waves launched by intensity-modulated lasers provide an elegant way for the determination of absorption and scattering coefficients of multiple scattering media. The absorption coefficient can be used for qualitative and quantitative analysis of chemical constituents (which absorb in the range of the laser wavelengths). The scattering coefficient allows characterization of physical and morphological properties of the sample. In the current work, applicability of appropriate radiation transport models was investigated with simple light scattering solutions and compared with results obtained from the treatment according to the theory of Kubelka and Munk. Measurements of human blood samples are discussed. A new method for determination of water vapor partial pressure in a polyurethane foam with a frequency-modulated external cavity diode laser is discussed.}, language = {de} } @article{SchaelEngelhardReich2001, author = {Schael, Frank and Engelhard, Sonja and Reich, Oliver}, title = {Optische Sensorik f{\"u}r die in-situ-Analytik von Brauprozessen}, year = {2001}, language = {de} } @article{KoetzBeitzKosmellaetal.2000, author = {Koetz, Joachim and Beitz, Toralf and Kosmella, Sabine and Tiersch, Brigitte}, title = {Polymer-modified microemulsions}, year = {2000}, language = {en} } @article{KoetzTierschBogen2000, author = {Koetz, Joachim and Tiersch, Brigitte and Bogen, Iris}, title = {Polyelectrolyte induced vesicle-formation in lamellar liquid crystalline model systems}, year = {2000}, language = {en} } @phdthesis{Thuenemann2000, author = {Th{\"u}nemann, Andreas F.}, title = {Self-assembly, ordered nanostructures and functionality of polyelectrolyte-amphiphile complexes}, pages = {188 S.}, year = {2000}, language = {en} } @phdthesis{Beyermann2000, author = {Beyermann, Jochen}, title = {Immobilisierung von Vitamin A-S{\"a}ure mit kationischen Polyelektrolyten : Polyelektrolyt-Tensid-Komplexe als potentielle Wirkstofftr{\"a}ger}, pages = {105 S.}, year = {2000}, language = {de} } @phdthesis{Schuette2000, author = {Sch{\"u}tte, Markus}, title = {Metallosupramolekulare Polyelektrolytfilme}, pages = {103 S.}, year = {2000}, language = {de} } @phdthesis{Schellenberg2000, author = {Schellenberg, Carsten}, title = {Nanaostrukturierte Polymermaterialien auf der Basis von Kern-Schale Dispersionen}, series = {Berichte aus der Chemie}, journal = {Berichte aus der Chemie}, publisher = {Shaker}, address = {Aachen}, isbn = {3-8265-7635-7}, pages = {113 S.}, year = {2000}, language = {de} } @phdthesis{Putlitz2000, author = {Putlitz, Bodo zu}, title = {Neue Tensidstrukturen und ihre Eigenschaften}, publisher = {Cuvillier}, address = {G{\"o}ttingen}, isbn = {3-89712-901-9}, pages = {112 S.}, year = {2000}, language = {de} } @phdthesis{Ruppelt2000, author = {Ruppelt, Dirk}, title = {Polyelektrolyt-Tensid-Komplexe als elektrooptische Materialien}, pages = {101 S.}, year = {2000}, language = {de} } @phdthesis{Boerger2000, author = {B{\"o}rger, Lars}, title = {Biomimetische Mineralisationsprozesse und deren Charakterisierung}, pages = {116 S.}, year = {2000}, language = {de} } @book{BechmannSchmidt2000, author = {Bechmann, Wolfgang and Schmidt, Joachim}, title = {Struktur- und Stoffanalytik mit spektroskopischen Methoden}, series = {Teubner Studienb{\"u}cher Chemie}, journal = {Teubner Studienb{\"u}cher Chemie}, publisher = {Vieweg+Teubner Verlag}, address = {Wiesbaden}, isbn = {3-519-03552-9}, doi = {10.1007/978-3-322-80123-4}, pages = {179 S.}, year = {2000}, language = {de} } @article{KammKammKromusetal.2000, author = {Kamm, Birgit and Kamm, Michael and Kromus, Stefan and Narodoslawsky, Michael}, title = {Green Biorefinery - European Network for the Implementation of Biorefineries (NIB)}, year = {2000}, language = {en} } @article{LoehmannsroebenLemkeSchoberetal.2000, author = {L{\"o}hmannsr{\"o}ben, Hans-Gerd and Lemke, Matthias and Schober, Lars and Schultze, Rainer}, title = {In-situ Analytik von organischen Bodenkontaminationen mit Laser-induzierter Fluoreszenz}, year = {2000}, language = {de} } @article{LoehmannsroebenTheoLemkeetal.2000, author = {L{\"o}hmannsr{\"o}ben, Hans-Gerd and Theo, Hengstermann and Lemke, Matthias and Schober, Lars and Schultze, Rainer}, title = {Entwicklung eines optischen Meßsystems zur in-situ Bestimmung von Fluoreszenztracern, Sauerstoff und pH- Wert in Gew{\"a}ssern (FLUTRAS: Fluorescence Tracer Detection System)}, year = {2000}, language = {de} } @article{Koetz2000, author = {Koetz, Joachim}, title = {Adsorption von polyelektrolyten an kolloidalen Partikeln}, isbn = {3-8265-7819-8}, year = {2000}, language = {de} } @article{SchoberLoehmannsroeben2000, author = {Schober, Lars and L{\"o}hmannsr{\"o}ben, Hans-Gerd}, title = {Determination of optical parameters for light penetration in particulate materials and soils with diffuse reflectance (DR) spectroscopy}, year = {2000}, language = {en} } @article{KalliesKunzKlausetal.2000, author = {Kallies, Bernd and Kunz, Iris and Klaus, Susanne and Schorr, Ulrike and Sharma, Arya M.}, title = {Kinetic analysis of the thermic effect of food and its relationship to body composition in humans}, year = {2000}, abstract = {The course of energy expenditure after a meal can vary widely with regard to the slope of onset, amplitude, and duration of the thermic effect. The aim of the present study was to explore the relationship between the thermic effect of food (TEF), as characterized by kinetic analysis of postprandial energy expenditure, body composition, and variables related to the metabolic syndrome including central obesity, hypertension, and glucose tolerance. A total of 181 men and women (body mass index [BMI] range, 19.4 to 52.2 kg/m2) were characterized for body composition, blood pressure, oral glucose tolerance, and energy expenditure after a test meal. Energy expenditure, as measured by indirect calorimetry, was analyzed over a 6-hour period by 3-parameter curve fitting using equations derived from kinetics describing a biphasic reaction involving 2 consecutive first-order reactions (A->B->C). Apart from total thermic effect of food (TEFk), the curve also provided an estimate of time of peak (Tp) and amplitude of peak (Ap) for each subject. Multiple stepwise regression analysis with TEFk, Ap, and Tp as dependent variables showed significant effects of sex, age, body weight, body fat, -blockade, and body composition on TEF curve parameters. Cluster analysis based on Tp shown 2 distinct clusters with significant differences in age and body fat mass. This study shows that kinetic analysis of postprandial energy expenditure can be used to examine the determinants of the time course of the thermic effect of food in man.}, language = {en} } @phdthesis{Stapff2000, author = {Stapff, Inga Heike}, title = {Mechanische Abbildung nanostrukturierter Polymerfilme}, pages = {113 S.}, year = {2000}, language = {de} } @phdthesis{Holzwarth2000, author = {Holzwarth, Andrea}, title = {Molekulare Ordnung und Benetzungsverhalten von Alkanen an der Luft-Si/SiO2-Grenzfl{\"a}che}, pages = {108 S.}, year = {2000}, language = {de} } @phdthesis{Kraemer2000, author = {Kr{\"a}mer, Eckart}, title = {Amphiphile Blockcopolymere : lyotropes Phasenverhalten und ihre Nutzung zur Morphosynthese}, series = {Berichte aus der Chemie}, journal = {Berichte aus der Chemie}, publisher = {Shaker}, address = {Aachen}, isbn = {3-8265-7030-8}, issn = {0945-070X}, pages = {123 S. : graph. Darst.}, year = {2000}, language = {de} } @phdthesis{Coelfen2000, author = {C{\"o}lfen, Helmut}, title = {Biomimetric mineralisation using hydrophilic copolymers : synthesis of hybrid colloids with complex from and pathways towards their analysis in solution}, pages = {155 S.}, year = {2000}, language = {en} } @article{KumkeSpechtFrimmel2000, author = {Kumke, Michael Uwe and Specht, C. H. and Frimmel, Fritz Hartmann}, title = {Characterization of NOM adsorption to clay minerals by sizs exclusion chromatography}, year = {2000}, language = {en} } @article{Loehmannsroeben2000, author = {L{\"o}hmannsr{\"o}ben, Hans-Gerd}, title = {In situ Laser-induced fluorescence (LIF) analysis pf petroleum product-contaminared soil samples}, year = {2000}, language = {en} } @article{KumkeZwienerAbbtBraunetal.2000, author = {Kumke, Michael Uwe and Zwiener, Christian and Abbt-Braun, Gudrun and Frimmel, Fritz Hartmann}, title = {Spectroscopic characterization of fulvic acid fractions of a contaminated groundwater}, year = {2000}, language = {en} } @article{HaitzerLoehmannsroebenSteinbergetal.2000, author = {Haitzer, Markus and L{\"o}hmannsr{\"o}ben, Hans-Gerd and Steinberg, Christian E. W. and Zimmermann, Ute}, title = {In vivo laser-induced fluorescence detection of pyrene in nematodes and determination of pyrene binding constants for humic substances by fluorescences quenching and bioaccumulation experiments}, year = {2000}, language = {en} } @article{KumkeOhlenbuschFrimmel2000, author = {Kumke, Michael Uwe and Ohlenbusch, G. and Frimmel, Fritz Hartmann}, title = {Sorption of phenols to dissolved organic matter investigaded by solid phase micriextrakrion}, year = {2000}, language = {en} } @article{GroteKlinnertBechmann2000, author = {Grote, Matthias and Klinnert, Silke and Bechmann, Wolfgang}, title = {Comparison of degradation state and stability of different humic acids by means of chemolysis with tetramethylammonium hydroxide (TMAH)}, year = {2000}, language = {en} } @phdthesis{Laudien2000, author = {Laudien, Robert}, title = {Mechanismen der basischen und sauren Hydrolyse der Phenylkohlens{\"a}urederivate}, pages = {101 S.}, year = {2000}, language = {de} } @article{SchaelReichLoehmannsroeben2000, author = {Schael, Frank and Reich, Oliver and L{\"o}hmannsr{\"o}ben, Hans-Gerd}, title = {Near infrared diode laser spectroscopy of organic compounds in turbid aqueous solutions}, isbn = {0-9528666-1-7}, year = {2000}, abstract = {Diffuse reflectance measurements and photon migration studies with near infrared (NIR) diode lasers were employed to elucidate experimental methods for determining absorption and scattering coefficients and species concentrations in highly scattering solutions. Applicability of theoretical approaches were established by investigating model systems with absorbing (e.g. ink, malachite green) and scattering (e.g. milk powder, caolinit) species in aqueous solution. While diffuse reflectance measurements practically requires calibration procedures, photon migration studies allow quantitative determination of absorption and scattering coefficients of turbid solutions consistent with absorptions coefficients obtained from Lambert-Beer's law. Furthermore, NIR absorption spectra of water, chlorinated hydrocarbons (chloroform, 1,2-dichloroethane, trichloroethene) and of various sugars (\$alpha\$-D-glucose, sucrose, maltose) are discussed. Spectral variations of NIR water absorption with temperature and solvents are exammined. Exemplary, NIR diode laser detection of water in acetone/water mixtures is performed.}, language = {en} } @article{LoehmannsroebenSchaelReichetal.2000, author = {L{\"o}hmannsr{\"o}ben, Hans-Gerd and Schael, Frank and Reich, Oliver and Lemke, Matthias and Schober, Lars}, title = {Untersuchung von organischer Bodensubstanz und Bodengasen mit laser-spektroskopischer in-situ Meßtechnik}, year = {2000}, language = {de} } @article{BechtholdTierschKoetzetal.1999, author = {Bechthold, Nina and Tiersch, Brigitte and Koetz, Joachim and Friberg, Stig E.}, title = {Structure Formation in polymer-modified liquid crystals}, year = {1999}, language = {en} } @article{KoetzBeitzTiersch1999, author = {Koetz, Joachim and Beitz, Toralf and Tiersch, Brigitte}, title = {Self assembled polymer-surfactant systems}, year = {1999}, language = {en} } @phdthesis{Regenbrecht1999, author = {Regenbrecht, Matthias}, title = {Untersuchung des Benetzungsverhaltens wasserl{\"o}slicher mizellarer Polyelektrolyt-Diblockcopolymer-Aggregate an der Luft/Festk{\"o}rper- und Fl{\"u}ssig/Festk{\"o}rper-Grenzfl{\"a}che auf Nanometer-Skala mit der Rasterkraftmikroskopie}, pages = {121 S.}, year = {1999}, language = {de} } @article{KoetzKosmella1999, author = {Koetz, Joachim and Kosmella, Sabine}, title = {Polymers in lyotropic liquid crystals}, year = {1999}, language = {en} } @article{Koetz1999, author = {Koetz, Joachim}, title = {Interactions between charged colloids and polyelectrolytes (invited lecture)}, isbn = {0-89852- 748-1}, year = {1999}, language = {en} } @phdthesis{Priester1999, author = {Priester, Torsten}, title = {Zur L{\"o}sung eines thermodynamischen Ph{\"a}nomens der Adsorption amphiphiler Stoffe an fluiden Phasengrenzfl{\"a}chen : die lineare Abh{\"a}ngigkeit der Gleichgewichtsoberfl{\"a}chenspannung vom Logarithmus der Volumenkonzentration}, series = {UFO Dissertation}, volume = {372}, journal = {UFO Dissertation}, publisher = {UFO Atelier f{\"u}r Gestaltung und Verl.}, address = {Allensbach}, isbn = {3-930803-71-2}, pages = {131 S. : graph. Darst.}, year = {1999}, language = {de} } @phdthesis{Mallwitz1999, author = {Mallwitz, Frank}, title = {Synthese und Charakterisierung monomolekularer dicker Polyisobutenfilme mit ionischen Ankergruppen}, pages = {V, 149 Bl. : graph. Darst.}, year = {1999}, language = {de} } @phdthesis{Gau1999, author = {Gau, Astrid}, title = {Polymerbedeckte Lipidvesikel}, address = {Potsdam}, pages = {iv, 136 S. : graph. Darst.}, year = {1999}, language = {de} } @phdthesis{Deckwer1999, author = {Deckwer, Roland}, title = {Oligomere in der Emulsionspolymerisation von Styrol : Eigenschaften und Charakterisierung}, pages = {111 S. : graph. Darst.}, year = {1999}, language = {de} } @phdthesis{Roosterman1999, author = {Roosterman, Dirk}, title = {Untersuchungen zur Agonisten-induzierten Internalisierung der Somatostatin-Rezeptoren}, pages = {122 Bl. : graph. Darst.}, year = {1999}, language = {de} } @phdthesis{Berton1999, author = {Berton, Beate}, title = {Bildung und Struktur mesopor{\"o}ser Silikatgl{\"a}ser mit Funktionalit{\"a}t}, address = {Potsdam}, pages = {111 Bl. : graph. Darst.}, year = {1999}, language = {de} } @phdthesis{Bogen1999, author = {Bogen, Iris}, title = {Physikochemische Eigenschaften und Strukturbildungsverhalten von neuartig substituierten Carboxymethylcellulosen}, pages = {101 S. : graph. Darst.}, year = {1999}, language = {de} } @phdthesis{Schilling1999, author = {Schilling, Kristian}, title = {Charakterisierung mizellarer Systeme mit der Analytischen Ultrazentrifuge : Synthese von Titandioxid in mizellaren Reaktionsr{\"a}umen}, publisher = {Cuvillier}, address = {G{\"o}ttingen}, isbn = {3-89712-739-3}, pages = {iii, 138 S. : graph. Darst.}, year = {1999}, language = {de} } @phdthesis{TocaHerrara1999, author = {Toca-Herrara, Jos{\´e} Luis = Herrera}, title = {Wechselwirkungskr{\"a}fte und Struktur in Phospholipid-Schaumfilmen}, address = {Potsdam}, pages = {104 Bl. : graph. Darst.}, year = {1999}, language = {de} } @phdthesis{Schladitz1999, author = {Schladitz, Claudia}, title = {Proteinsekund{\"a}rstrukturen an der fluiden Grenzfl{\"a}che - in situ - Untersuchungen mit der IRRAS}, address = {Potsdam}, pages = {getr. Z{\"a}hlung : graph. Darst.}, year = {1999}, language = {de} } @article{TschochnerBlumensteinKruegeretal.1999, author = {Tschochner, Bernd and Blumenstein, Oswald and Kr{\"u}ger, Wolfgang and Bechmann, Wolfgang}, title = {Geo{\"o}kologische Aspekte der Schadstoffdynamik in einem antarktischen Geosystem}, year = {1999}, language = {de} } @article{SchwarzAndraeArnoldetal.1999, author = {Schwarz, W. H. Eugen and Andrae, Dirk and Arnold, S. R. and Heidberg, Joachim and Hellmann jr., H. and Hinze, J. and Karachalios, A. and Kovner, M. A. and Schmidt, P. C. and Z{\"u}licke, Lutz}, title = {Hans G. Hellmann (1903 - 1938) : ein deutscher Pionier der Quantenchemie in Moskau}, year = {1999}, language = {de} } @article{SchwarzAndraeArnoldetal.1999, author = {Schwarz, W. H. Eugen and Andrae, Dirk and Arnold, S. R. and Heidberg, Joachim and Hellmann jr., H. and Hinze, J. and Karachalios, A. and Kovner, M. A. and Schmidt, P. C. and Z{\"u}licke, Lutz}, title = {Hans G. Hellmann (1903 - 1938) : ein Pionier der Quantenchemie}, year = {1999}, language = {de} } @article{ZuhrtNeumannZuelicke1999, author = {Zuhrt, Christian and Neumann, Rainer and Z{\"u}licke, Lutz}, title = {Investigation of vibrational states of the ArHCl+ cation in the electronic ground state}, year = {1999}, language = {en} } @phdthesis{Netz1999, author = {Netz, Roland R.}, title = {Field-theoretic approaches to clasical charged systems}, pages = {123 S.}, year = {1999}, language = {en} } @article{KosmellaKoetzShirahama1999, author = {Kosmella, Sabine and Koetz, Joachim and Shirahama, K.}, title = {Binding of dodecylpyridinium chloride to anionic co-polymers and their complexes}, year = {1999}, language = {en} } @article{BeitzKoetzFriberg1999, author = {Beitz, Toralf and Koetz, Joachim and Friberg, Stig E.}, title = {Polymer-modified ionic microemulsion formed in the system SDS/Water/Xylene/Pentanol}, year = {1999}, language = {en} } @article{BeyermannKoetzJaegeretal.1999, author = {Beyermann, Jochen and Koetz, Joachim and J{\"a}ger, Werner and Friberg, Stig E.}, title = {Influence of charge density of anionic polyelectrolytes on structure formation in liquid crystalline systems}, year = {1999}, language = {en} } @article{TessmannBeitzBechmannetal.1999, author = {Tessmann, Joachim and Beitz, Toralf and Bechmann, Wolfgang and Mitzner, Rolf}, title = {Untersuchungen zu Toxizit{\"a}ts{\"a}nderungen in Photoreaktionen von Azaarenen}, year = {1999}, language = {de} } @article{BeitzBechmannMitzner1999, author = {Beitz, Toralf and Bechmann, Wolfgang and Mitzner, Rolf}, title = {Investigation on the photoreactions of Nitrate and Nitrite ions with selected Azaarenes in water}, year = {1999}, language = {en} } @article{KoetzBogenHeinzeetal.1998, author = {Koetz, Joachim and Bogen, Iris and Heinze, Ute and Heinze, Thomas and Klemm, D. and Lange, Silke and Kulicke, Werner-Michael}, title = {Kolloideigenschaften statistisch, blockartig und regioselektiv substituierter Carboxymethylcellulosen}, issn = {0031-1340}, year = {1998}, language = {de} } @article{KoetzPlantenberg1998, author = {Koetz, Joachim and Plantenberg, Thomas}, title = {Self-assembled polyanion-polycation systems}, isbn = {0-9585708-1-7}, year = {1998}, language = {en} } @phdthesis{Richter1998, author = {Richter, Bernd}, title = {Selbstorganisierte Hetero-Mulitschichtstrukturen als elektrolumineszierende Bauelemente}, address = {Potsdam}, pages = {117 S. : graph. Darst.}, year = {1998}, language = {de} } @phdthesis{Giersig1998, author = {Giersig, Michael}, title = {Physikalisch-chemische Charakterisierung von kolloidalen Halbleiter- und Metallteilchen}, address = {Potsdam}, pages = {Getr. Z{\"a}hlung}, year = {1998}, language = {de} }