TY  - THES
A1  - Vergin, Annika
T1  - Charakterisierung von Metallosupramolekularen Polyelektrolyten mittels analytischer Ultrazentrifugation
Y1  - 2008
CY  - Potsdam
ER  - 
TY  - BOOK
A1  - Koetz, Joachim
A1  - Kosmella, Sabine
T1  - Polyelectrolytes and nanoparticles
T3  - Springer laboratory manuals in polymer science
Y1  - 2007
SN  - 3-540-46381-X
PB  - Springer-Verlag
CY  - Heidelberg
ER  - 
TY  - JOUR
A1  - Koetz, Joachim
A1  - Andres, S.
A1  - Kosmella, Sabine
A1  - Tiersch, Brigitte
T1  - BaSO4 nanorods produced in polymer-modified bicontinuous microemulsions
N2  - 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
Y1  - 2006
UR  - http://www.ingentaconnect.com/content/vsp/ci
U6  - https://doi.org/10.1163/156855406777408629
SN  - 0927-6440
ER  - 
TY  - JOUR
A1  - Engelhard, Sonja
A1  - Kumke, Michael Uwe
A1  - Löhmannsröben, Hans-Gerd
T1  - Examples of the application of optical process and quality sensing (OPQS) to beer brewing and polyurethane foaming processes
N2  - 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
Y1  - 2006
UR  - http://www.springerlink.com/content/100417
U6  - https://doi.org/10.1007/s00216-005-3364-4
SN  - 1618-2642
ER  - 
TY  - JOUR
A1  - Kamm, Birgit
A1  - Kamm, Michael
A1  - Schmidt, Matthias
A1  - Starke, Ines
A1  - Kleinpeter, Erich
T1  - Chemical and biochemical generation of carbohydrates from lignocellulose-feedstock (Lupinus nootkatensis) : quantification of glucose
N2  - 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.
Y1  - 2006
UR  - http://www.sciencedirect.com/science/journal/00456535
U6  - https://doi.org/10.1016/j.chemosphere.2005.03.073
SN  - 0045-6535
ER  - 
TY  - JOUR
A1  - Kumke, Michael Uwe
A1  - Eidner, Sascha
A1  - Krüger, Tobias
T1  - Fluorescence quenching and luminescence sensitization in complexes of Tb3+ and Eu3+ with humic substances
N2  - 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
Y1  - 2005
ER  - 
TY  - JOUR
A1  - Apitz, Sabine E.
A1  - Bell, Elanor M.
A1  - Damgaard, Lars
A1  - Gilbert, Franck
A1  - Glud, R
A1  - Hall, P. O. J.
A1  - Kershaw, P. J.
A1  - Nickel, L
A1  - Parker, R
A1  - Rabouille, Christophe
A1  - Shimmield, Grahamm
A1  - Solan, Martin
A1  - Soltwedel, Thomas
A1  - Spagnoli, Federico
A1  - Witte, Ursula
T1  - Coastal Ocean Benthic Observatories (COBO) : integrated tools for the in situ observation and study of benthic ecosystem biogeochemical processes
Y1  - 2005
ER  - 
TY  - JOUR
A1  - Strehmel, Veronika
A1  - Sarker, A. M.
A1  - Lahti, P. M.
A1  - Karasz, F. E.
A1  - Heydenreich, Matthias
A1  - Wetzel, Hendrik
A1  - Haebel, Sophie
A1  - Strehmel, Bernd
T1  - One- and two-photon photochemistry and photophysics of poly(arylenevinylene)s containing a biphenyl moiety
N2  - 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
Y1  - 2005
SN  - 1439-4235
ER  - 
TY  - JOUR
A1  - Ritschel, Thomas
A1  - Kuntz, Philip J.
A1  - Zulicke, Lutz
T1  - Structure and dynamics of cationic van-der-Waals clusters : I. Binding and structure of protonated argon clusters
N2  - 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
Y1  - 2005
ER  - 
TY  - JOUR
A1  - Löhmannsröben, Hans-Gerd
T1  - Laser-induced fluorescence (LIF) spectroscopy and laser-based ion mobility (IM) spectrometry for in-situ analysis of contaminated soils
Y1  - 2005
ER  - 
TY  - JOUR
A1  - Löhmannsröben, Hans-Gerd
A1  - Lau, Steffen
T1  - Isotope selectivity in environmental monitoring : NIR diode laser spectroscopy for isotope-selective sensing of soil-respired carbon dioxide
Y1  - 2005
ER  - 
TY  - GEN
A1  - Koetz, Joachim
A1  - Reichelt, S.
A1  - Kosmella, Sabine
A1  - Tiersch, Brigitte
T1  - Recovery of nanoparticles produced in phosphatidylcholine-based template phases
N2  - 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
Y1  - 2005
SN  - 0021-9797
ER  - 
TY  - JOUR
A1  - Kamm, Birgit
A1  - Kamm, Michael
T1  - Biorefinery : Carbohydrate line : Product line lactic acid
Y1  - 2004
SN  - 0065-7727
ER  - 
TY  - JOUR
A1  - Dosche, Carsten
A1  - Kumke, Michael Uwe
A1  - Löhmannsröben, Hans-Gerd
A1  - Ariese, Freek
A1  - Bader, Arjen N.
A1  - Gooijer, Cees
A1  - Miljanic, Ognjen S.
A1  - Iwamoto, M.
A1  - Vollhardt, K. Peter C.
A1  - Puchta, Ralph
A1  - Hommes, N. J. R. V.
T1  - Deuteration effects on the vibronic structure of the fluorescence spectra and the internal conversion rates of triangular [4]phenylene
N2  - 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
Y1  - 2004
SN  - 1463-9076
ER  - 
TY  - JOUR
A1  - Kamm, Birgit
A1  - Kamm, Michael
T1  - Polycarnitine : a new biomaterial
Y1  - 2004
SN  - 0065-7727
ER  - 
TY  - JOUR
A1  - Koetz, Joachim
A1  - Bahnemann, Jennifa
A1  - Lucas, Gordon
A1  - Tiersch, Brigitte
A1  - Kosmella, Sabine
T1  - Polyelectrolyte-modified microemulsions as new templates for the formation of nanoparticles
N2  - 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
Y1  - 2004
SN  - 0927-7757
ER  - 
TY  - JOUR
A1  - Mahapatra, Susanta
A1  - Ritschel, Thomas
T1  - Multistate vibronic interactions and nonadiabatic wave packet dynamics in the second photoelectron band of chlorine dioxide
N2  - 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.
Y1  - 2003
ER  - 
TY  - JOUR
A1  - Plantenberg, Thomas
A1  - Koetz, Joachim
T1  - Liquid Crystalline Polyanion/Polycation/Water Systems
Y1  - 2001
ER  - 
TY  - THES
A1  - Willert, Mirjam A.
T1  - Prinzipien und Anwendungsmöglichkeiten nichtwäßriger und inverser Miniemulsionen
Y1  - 2001
SN  - 3-89873-329-7
PB  - Cuvillier
CY  - Göttingen
ER  - 
TY  - THES
A1  - Polarz, Sebastian
T1  - Konzepte der Nanochemie auf der Basis von porösen Materialien
Y1  - 2001
ER  - 
TY  - THES
A1  - Krasteva, Nadejda
T1  - Influence of soluble sugars and DMSO on interactions and phase behaviour of phospholipid monolayers, thin foam films and bilayer dispersions
Y1  - 2001
ER  - 
TY  - THES
A1  - Rudloff, Jan
T1  - Doppelthydrophile Blockcopolymere : Synthese und Einsatz in der biomimetischen Morphosynthese von CaCO3
Y1  - 2001
ER  - 
TY  - THES
A1  - Drechsler, Ulrich
T1  - Statische Lichtstreuung an Cellulose in Lösungsmittelsystemen mit N-Methylmorpholin-N-oxid
Y1  - 2001
ER  - 
TY  - THES
A1  - Tiarks, Franca
T1  - Neue Strukturen und Synthesen durch die Miniemulsionspolymerisation: Polyaddition, Nanokapseln und Hybridpartikel
Y1  - 2001
SN  - 3-8265-8997-1
SN  - 0945-070X
PB  - Shaker
CY  - Aachen
ER  - 
TY  - THES
A1  - Sapich, Beate
T1  - Einfluss photochemischer Prozesse auf Dynamik und Ordnung photochromer Polymere
Y1  - 2001
ER  - 
TY  - THES
A1  - Smarsly, Bernd
T1  - Charakterisierung poröser Materialien mit Methoden der Kleinwinkelstreuung
Y1  - 2001
ER  - 
TY  - THES
A1  - Schmitt, Cristopher
T1  - Endfunktionalisierte Polyfluorene und konjugierte Blockcopolymere auf Polyfluorenbasis
Y1  - 2001
ER  - 
TY  - THES
A1  - Koehler, Bernhard
T1  - Chirale Makrozyklen und Polymere aus Oligoarylen- und Spiroindan-Bausteinen
Y1  - 2001
ER  - 
TY  - THES
A1  - Lauter, Robert
T1  - Struktur von Monoschichten bipolarer Amphiphile an der Wasser-Luft Grenzfläche
Y1  - 2001
ER  - 
TY  - THES
A1  - Moya, Sergio Enrique
T1  - Architecture, permeability, electrical and mechanical properties of polyelectrolyte lipid composite capsules
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Koetz, Joachim
A1  - Kosmella, Sabine
T1  - Interactions between Polyelectrolytes and Kaolin
Y1  - 2001
ER  - 
TY  - BOOK
A1  - Bechmann, Wolfgang
A1  - Schmidt, Joachim
A1  - Elschenbroich, Christoph
A1  - Hensel, Friedrich
A1  - Hopf, Henning
T1  - Einstieg in die Physikalische Chemie für Nebenfächler
T3  - Teubner Studienbücher Chemie
N2  - Mit einer ausgewogenen Stoffauswahl wird der Leser an das Studium der Physikalischen Chemie herangeführt. Das Verständnis der Theorie wird durch zahlreiche Aufgabenstellungen und die Angabe ihrer Lösungswege erleichtert. Das vorliegende Buch gibt dem Studenten darüber hinaus Anregungen für ausgewählte Experimente zu den behandelten Teilgebieten. In der Durchführung und Auswertung der Experimente kann der Student erneut überprüfen, wie gut es ihm gelungen ist, ein Grundverständnis für physikalisch-chemische Zusammenhänge zu entwickeln.
Y1  - 2001
SN  - 3-519-00352-X
U6  - https://doi.org/10.1007/978-3-322-94876-2
PB  - Vieweg+Teubner Verlag
CY  - Wiesbaden
ER  - 
TY  - JOUR
A1  - Koetz, Joachim
A1  - Kosmella, Sabine
A1  - Beitz, Toralf
T1  - Self-assembled Polyelectrolyte Systems
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Heinze, Thomas
A1  - Heinze, Ute
A1  - Grothe, Carsten
A1  - Koetz, Joachim
A1  - Lazik, Waldemar
T1  - Starch derivatives of high degree of functionalization : 4. Homogeneous tritylation of starch an subsequent carboxymethylation
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Koetz, Joachim
A1  - Bogen, Iris
A1  - Heinze, Thomas
A1  - Heinze, Ute
A1  - Kulicke, Werner-Michael
A1  - Lange, Silke
T1  - Pecularities in the physico-chemical behaviour of non-statistically substituted carboxymethylcelluloses
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Strehmel, Bernd
T1  - Fluorescence Probes for Material Science
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Kallies, Bernd
A1  - Meier, R.
T1  - 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
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Illenseer, C.
T1  - Investigation of ion-molecule collisions with laser-based ion mobility spectrometry
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Strehmel, Bernd
A1  - Henbest, K. B.
A1  - Sarker, A. M.
A1  - Malpert, J. H.
A1  - Chen, D. Y.
A1  - Rodgers, M. A. J.
A1  - Neckers, D. C.
T1  - Ion induced man ipulation of photochemical pathways in crown ether compounends based on fluorinated oligophenylenevinylenes
Y1  - 2001
PB  - Journal of nanoscience and nanotechnology. - 1 (2001), 1, S. 107 - 124
ER  - 
TY  - JOUR
A1  - Beitz, Toralf
A1  - Koetz, Joachim
A1  - Wolf, Gunter
A1  - Kleinpeter, Erich
A1  - Friberg, Stig E.
T1  - Poly(N-vinyl-2-pyrrolidone) and 1-octyl-2-pyrrolidinone modified ionic microemulsions
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Schael, Frank
A1  - Reich, Oliver
T1  - In-situ-Analytik heterogener Medien mit frequenz- und leistungsmodulierten Diodenlasern
N2  - 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.
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Schael, Frank
A1  - Engelhard, Sonja
A1  - Reich, Oliver
T1  - Optische Sensorik für die in-situ-Analytik von Brauprozessen
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Koetz, Joachim
A1  - Beitz, Toralf
A1  - Kosmella, Sabine
A1  - Tiersch, Brigitte
T1  - Polymer-modified microemulsions
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Koetz, Joachim
A1  - Tiersch, Brigitte
A1  - Bogen, Iris
T1  - Polyelectrolyte induced vesicle-formation in lamellar liquid crystalline model systems
Y1  - 2000
ER  - 
TY  - THES
A1  - Thünemann, Andreas F.
T1  - Self-assembly, ordered nanostructures and functionality of polyelectrolyte-amphiphile complexes
Y1  - 2000
ER  - 
TY  - THES
A1  - Beyermann, Jochen
T1  - Immobilisierung von Vitamin A-Säure mit kationischen Polyelektrolyten : Polyelektrolyt-Tensid-Komplexe als potentielle Wirkstoffträger
Y1  - 2000
ER  - 
TY  - THES
A1  - Schütte, Markus
T1  - Metallosupramolekulare Polyelektrolytfilme
Y1  - 2000
ER  - 
TY  - THES
A1  - Schellenberg, Carsten
T1  - Nanaostrukturierte Polymermaterialien auf der Basis von Kern-Schale Dispersionen
T2  - Berichte aus der Chemie
Y1  - 2000
SN  - 3-8265-7635-7
PB  - Shaker
CY  - Aachen
ER  - 
TY  - THES
A1  - Putlitz, Bodo zu
T1  - Neue Tensidstrukturen und ihre Eigenschaften
Y1  - 2000
SN  - 3-89712-901-9
PB  - Cuvillier
CY  - Göttingen
ER  - 
TY  - THES
A1  - Ruppelt, Dirk
T1  - Polyelektrolyt-Tensid-Komplexe als elektrooptische Materialien
Y1  - 2000
ER  - 
TY  - THES
A1  - Börger, Lars
T1  - Biomimetische Mineralisationsprozesse und deren Charakterisierung
Y1  - 2000
ER  - 
TY  - BOOK
A1  - Bechmann, Wolfgang
A1  - Schmidt, Joachim
T1  - Struktur- und Stoffanalytik mit spektroskopischen Methoden
T3  - Teubner Studienbücher Chemie
Y1  - 2000
SN  - 3-519-03552-9
U6  - https://doi.org/10.1007/978-3-322-80123-4
PB  - Vieweg+Teubner Verlag
CY  - Wiesbaden
ER  - 
TY  - JOUR
A1  - Kamm, Birgit
A1  - Kamm, Michael
A1  - Kromus, Stefan
A1  - Narodoslawsky, Michael
T1  - Green Biorefinery - European Network for the Implementation of Biorefineries (NIB)
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Löhmannsröben, Hans-Gerd
A1  - Lemke, Matthias
A1  - Schober, Lars
A1  - Schultze, Rainer
T1  - In-situ Analytik von organischen Bodenkontaminationen mit Laser-induzierter Fluoreszenz
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Löhmannsröben, Hans-Gerd
A1  - Theo, Hengstermann
A1  - Lemke, Matthias
A1  - Schober, Lars
A1  - Schultze, Rainer
T1  - Entwicklung eines optischen Meßsystems zur in-situ Bestimmung von Fluoreszenztracern, Sauerstoff und pH- Wert in Gewässern (FLUTRAS: Fluorescence Tracer Detection System)
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Koetz, Joachim
T1  - Adsorption von polyelektrolyten an kolloidalen Partikeln
Y1  - 2000
SN  - 3-8265-7819-8
ER  - 
TY  - JOUR
A1  - Schober, Lars
A1  - Löhmannsröben, Hans-Gerd
T1  - Determination of optical parameters for light penetration in particulate materials and soils with diffuse reflectance (DR) spectroscopy
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Kallies, Bernd
A1  - Kunz, Iris
A1  - Klaus, Susanne
A1  - Schorr, Ulrike
A1  - Sharma, Arya M.
T1  - Kinetic analysis of the thermic effect of food and its relationship to body composition in humans
N2  - 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.
Y1  - 2000
ER  - 
TY  - THES
A1  - Stapff, Inga Heike
T1  - Mechanische Abbildung nanostrukturierter Polymerfilme
Y1  - 2000
ER  - 
TY  - THES
A1  - Holzwarth, Andrea
T1  - Molekulare Ordnung und Benetzungsverhalten von Alkanen an der Luft-Si/SiO2-Grenzfläche
Y1  - 2000
ER  - 
TY  - THES
A1  - Krämer, Eckart
T1  - Amphiphile Blockcopolymere : lyotropes Phasenverhalten und ihre Nutzung zur Morphosynthese
T2  - Berichte aus der Chemie
Y1  - 2000
SN  - 3-8265-7030-8
SN  - 0945-070X
PB  - Shaker
CY  - Aachen
ER  - 
TY  - THES
A1  - Cölfen, Helmut
T1  - Biomimetric mineralisation using hydrophilic copolymers : synthesis of hybrid colloids with complex from and pathways towards their analysis in solution
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Kumke, Michael Uwe
A1  - Specht, C. H.
A1  - Frimmel, Fritz Hartmann
T1  - Characterization of NOM adsorption to clay minerals by sizs exclusion chromatography
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Löhmannsröben, Hans-Gerd
T1  - In situ Laser-induced fluorescence (LIF) analysis pf petroleum product-contaminared soil samples
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Kumke, Michael Uwe
A1  - Zwiener, Christian
A1  - Abbt-Braun, Gudrun
A1  - Frimmel, Fritz Hartmann
T1  - Spectroscopic characterization of fulvic acid fractions of a contaminated groundwater
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Haitzer, Markus
A1  - Löhmannsröben, Hans-Gerd
A1  - Steinberg, Christian E. W.
A1  - Zimmermann, Ute
T1  - 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
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Kumke, Michael Uwe
A1  - Ohlenbusch, G.
A1  - Frimmel, Fritz Hartmann
T1  - Sorption of phenols to dissolved organic matter investigaded by solid phase micriextrakrion
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Grote, Matthias
A1  - Klinnert, Silke
A1  - Bechmann, Wolfgang
T1  - Comparison of degradation state and stability of different humic acids by means of chemolysis with tetramethylammonium hydroxide (TMAH)
Y1  - 2000
ER  - 
TY  - THES
A1  - Laudien, Robert
T1  - Mechanismen der basischen und sauren Hydrolyse der Phenylkohlensäurederivate
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Schael, Frank
A1  - Reich, Oliver
A1  - Löhmannsröben, Hans-Gerd
T1  - Near infrared diode laser spectroscopy of organic compounds in turbid aqueous solutions
N2  - 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.
Y1  - 2000
SN  - 0-9528666-1-7
ER  - 
TY  - JOUR
A1  - Löhmannsröben, Hans-Gerd
A1  - Schael, Frank
A1  - Reich, Oliver
A1  - Lemke, Matthias
A1  - Schober, Lars
T1  - Untersuchung von organischer Bodensubstanz und Bodengasen mit laser-spektroskopischer in-situ Meßtechnik
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Bechthold, Nina
A1  - Tiersch, Brigitte
A1  - Koetz, Joachim
A1  - Friberg, Stig E.
T1  - Structure Formation in polymer-modified liquid crystals
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Koetz, Joachim
A1  - Beitz, Toralf
A1  - Tiersch, Brigitte
T1  - Self assembled polymer-surfactant systems
Y1  - 1999
ER  - 
TY  - THES
A1  - Regenbrecht, Matthias
T1  - Untersuchung des Benetzungsverhaltens wasserlöslicher mizellarer Polyelektrolyt-Diblockcopolymer-Aggregate an der Luft/Festkörper- und Flüssig/Festkörper-Grenzfläche auf Nanometer-Skala mit der Rasterkraftmikroskopie
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Koetz, Joachim
A1  - Kosmella, Sabine
T1  - Polymers in lyotropic liquid crystals
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Koetz, Joachim
T1  - Interactions between charged colloids and polyelectrolytes (invited lecture)
Y1  - 1999
SN  - 0-89852- 748-1
ER  - 
TY  - THES
A1  - Priester, Torsten
T1  - Zur Lösung eines thermodynamischen Phänomens der Adsorption amphiphiler Stoffe an fluiden Phasengrenzflächen : die lineare Abhängigkeit der Gleichgewichtsoberflächenspannung vom Logarithmus der Volumenkonzentration
T2  - UFO Dissertation
Y1  - 1999
SN  - 3-930803-71-2
VL  - 372
PB  - UFO Atelier für Gestaltung und Verl.
CY  - Allensbach
ER  - 
TY  - THES
A1  - Mallwitz, Frank
T1  - Synthese und Charakterisierung monomolekularer dicker Polyisobutenfilme mit ionischen Ankergruppen
Y1  - 1999
ER  - 
TY  - THES
A1  - Gau, Astrid
T1  - Polymerbedeckte Lipidvesikel
Y1  - 1999
CY  - Potsdam
ER  - 
TY  - THES
A1  - Deckwer, Roland
T1  - Oligomere in der Emulsionspolymerisation von Styrol : Eigenschaften und Charakterisierung
Y1  - 1999
ER  - 
TY  - THES
A1  - Roosterman, Dirk
T1  - Untersuchungen zur Agonisten-induzierten Internalisierung der Somatostatin-Rezeptoren
Y1  - 1999
ER  - 
TY  - THES
A1  - Berton, Beate
T1  - Bildung und Struktur mesoporöser Silikatgläser mit Funktionalität
Y1  - 1999
CY  - Potsdam
ER  - 
TY  - THES
A1  - Bogen, Iris
T1  - Physikochemische Eigenschaften und Strukturbildungsverhalten von neuartig substituierten Carboxymethylcellulosen
Y1  - 1999
ER  - 
TY  - THES
A1  - Schilling, Kristian
T1  - Charakterisierung mizellarer Systeme mit der Analytischen Ultrazentrifuge : Synthese von Titandioxid in mizellaren Reaktionsräumen
Y1  - 1999
SN  - 3-89712-739-3
PB  - Cuvillier
CY  - Göttingen
ER  - 
TY  - THES
A1  - Toca-Herrara, José Luis = Herrera
T1  - Wechselwirkungskräfte und Struktur in Phospholipid-Schaumfilmen
Y1  - 1999
CY  - Potsdam
ER  - 
TY  - THES
A1  - Schladitz, Claudia
T1  - Proteinsekundärstrukturen an der fluiden Grenzfläche - in situ - Untersuchungen mit der IRRAS
Y1  - 1999
CY  - Potsdam
ER  - 
TY  - JOUR
A1  - Tschochner, Bernd
A1  - Blumenstein, Oswald
A1  - Krüger, Wolfgang
A1  - Bechmann, Wolfgang
T1  - Geoökologische Aspekte der Schadstoffdynamik in einem antarktischen Geosystem
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Schwarz, W. H. Eugen
A1  - Andrae, Dirk
A1  - Arnold, S. R.
A1  - Heidberg, Joachim
A1  - Hellmann jr., H.
A1  - Hinze, J.
A1  - Karachalios, A.
A1  - Kovner, M. A.
A1  - Schmidt, P. C.
A1  - Zülicke, Lutz
T1  - Hans G. Hellmann (1903 - 1938) : ein deutscher Pionier der Quantenchemie in Moskau
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Schwarz, W. H. Eugen
A1  - Andrae, Dirk
A1  - Arnold, S. R.
A1  - Heidberg, Joachim
A1  - Hellmann jr., H.
A1  - Hinze, J.
A1  - Karachalios, A.
A1  - Kovner, M. A.
A1  - Schmidt, P. C.
A1  - Zülicke, Lutz
T1  - Hans G. Hellmann (1903 - 1938) : ein Pionier der Quantenchemie
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Zuhrt, Christian
A1  - Neumann, Rainer
A1  - Zülicke, Lutz
T1  - Investigation of vibrational states of the ArHCl+ cation in the electronic ground state
Y1  - 1999
ER  - 
TY  - THES
A1  - Netz, Roland R.
T1  - Field-theoretic approaches to clasical charged systems
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Kosmella, Sabine
A1  - Koetz, Joachim
A1  - Shirahama, K.
T1  - Binding of dodecylpyridinium chloride to anionic co-polymers and their complexes
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Beitz, Toralf
A1  - Koetz, Joachim
A1  - Friberg, Stig E.
T1  - Polymer-modified ionic microemulsion formed in the system SDS/Water/Xylene/Pentanol
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Beyermann, Jochen
A1  - Koetz, Joachim
A1  - Jäger, Werner
A1  - Friberg, Stig E.
T1  - Influence of charge density of anionic polyelectrolytes on structure formation in liquid crystalline systems
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Tessmann, Joachim
A1  - Beitz, Toralf
A1  - Bechmann, Wolfgang
A1  - Mitzner, Rolf
T1  - Untersuchungen zu Toxizitätsänderungen in Photoreaktionen von Azaarenen
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Beitz, Toralf
A1  - Bechmann, Wolfgang
A1  - Mitzner, Rolf
T1  - Investigation on the photoreactions of Nitrate and Nitrite ions with selected Azaarenes in water
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Koetz, Joachim
A1  - Bogen, Iris
A1  - Heinze, Ute
A1  - Heinze, Thomas
A1  - Klemm, D.
A1  - Lange, Silke
A1  - Kulicke, Werner-Michael
T1  - Kolloideigenschaften statistisch, blockartig und regioselektiv substituierter Carboxymethylcellulosen
Y1  - 1998
SN  - 0031-1340
ER  - 
TY  - JOUR
A1  - Koetz, Joachim
A1  - Plantenberg, Thomas
T1  - Self-assembled polyanion-polycation systems
Y1  - 1998
SN  - 0-9585708-1-7
ER  - 
TY  - THES
A1  - Richter, Bernd
T1  - Selbstorganisierte Hetero-Mulitschichtstrukturen als elektrolumineszierende Bauelemente
Y1  - 1998
CY  - Potsdam
ER  - 
TY  - THES
A1  - Giersig, Michael
T1  - Physikalisch-chemische Charakterisierung von kolloidalen Halbleiter- und Metallteilchen
Y1  - 1998
CY  - Potsdam
ER  -