@misc{LaschewskyRingsdorf1988, author = {Laschewsky, Andr{\´e} and Ringsdorf, H.}, title = {Polymerization of amphiphilic dienes in Langmuir-Blodgett multilayers}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17176}, year = {1988}, abstract = {Amphiphilic derivatives of octadiene and docosadiene were investigated in monolayers and Langmuir-Blodgett multilayers, with respect to their self-organization and their polymerization behavior. All amphiphiles investigated form monolayers. However, only acid and alcohol derivatives were able to build up multilayers. Those multilayers are rapidly photopolymerized in the layers via a two-step process: Irradiation with long-wavelength UV light yields soluble polymers, whereas additional irradiation with sfiort-wavelength UV light produces insoluble and presumably cross-linked polymers. The reaction meclianism is discussed according to the polymer characterization by UV spectroscopy, small-angle X-ray scattering, NMR spectroscopy, and gel permeation chromatography. All multilayers undergo structural changes during the polymerization; substantial changes result in defects in the polymerized layers as observed by scanning electron microscopy. In contrast to the acids and alcohols, the deposition of monolayers of the aldehyde derivatives did not yield well-ordered multilayers, but rather amorphous films. In this different film structure, the photopolymerization process differs from the one observed in multilayers.}, language = {en} } @misc{LupoPrassScheunemannetal.1988, author = {Lupo, Donald and Prass, Werner and Scheunemann, Ude and Laschewsky, Andr{\´e} and Ringsdorf, Helmut and Ledoux, Isabelle}, title = {Second-harmonic generation in Langmuir-Blodgett monolayers of stilbazium salt and phenylhydrazone dyes}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17401}, year = {1988}, abstract = {Contents: 1. INTRODUCTION 2. SYNTHESIS OF THE COMPOUNDS 3. PREPARATION AND CHARACTERIZATION OF MONOLAYERS A. Monolayer Isotherms B. Langmuir-Blodgett Monolayer Films 4. EXPERIMENTAL SETUP FOR NONLINEAR MEASUREMENTS 5. NONLINEAR OPTICAL PROPERTIES 6. DISCUSSION 7. CONCLUSION}, language = {en} } @misc{PeterFoerster1989, author = {Peter, Martin G. and F{\"o}rster, Hans}, title = {On the structure of Eumelanins : identification of constitutional patterns by solid-state NMR spectroscopy}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17027}, year = {1989}, abstract = {Aus dem Inhalt: Melanins are complex polyphenolic polymers. They are usually formed in nature by enzyme-catalyzed oxidative polymerization of o-diphenols. The deep black eumelanins, derived from Dopa 1 or dopamine 3, are distinguished from the yellow to brown phaeomelanins obtained from Dopa in the presence of cysteine. Characteristic of eumelanins are the indole units, which are formed from catecholamines by intramolecular addition of the amino groups to the oxidatively generated o-quinones. [...]}, language = {en} } @misc{ErdelenLaschewskyRingsdorfetal.1989, author = {Erdelen, C. and Laschewsky, Andr{\´e} and Ringsdorf, H. and Schneider, J. and Schuster, A.}, title = {Thermal behaviour of polymeric Langmuir-Blodgett multilayers}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17378}, year = {1989}, abstract = {Langmuir-Blodgett multilayers of hydrocarbon and fluorocarbon polymers with hydrophilic spacer, lipid-polyelectrolyte complexes and mesogenic polymers have been prepared. The thermal behaviour of the multilayers was studied by small angle X-ray scattering, IR and UV—visible spectroscopy. Good thermal stabilities were found for the various classes of polymers. In addition, for both complexed multilayers and mesogenic polymer films, reorientation processes were observed.}, language = {en} } @misc{Laschewsky1989, author = {Laschewsky, Andr{\´e}}, title = {Monolayers and Langmuir-Blodgett multilayers of discotic liquid crystals?}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17396}, year = {1989}, abstract = {Contents: 1. Discotic Liquid Crystals 2. Monolayers and Langmuir-Blodgett Multilayers 3. Theoretical Considerations on the Molecular Packing of Discotic LCs in Monolayers and Multilayers 4. Spreading Experiments with Discotic LCs 5. LB-Multilayers of Discotic LCs 6. Polymeric Discotic LCs 7. Summary}, language = {en} } @misc{BiddleRickertLandoetal.1989, author = {Biddle, M. B. and Rickert, S. E. and Lando, J. B. and Laschewsky, Andr{\´e}}, title = {The use of the Langmuir-Blodgett technique to obtain ultra-thin polar films}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17185}, year = {1989}, abstract = {The piezoelectric and pyroelectric properties of oriented films possessing dipole moments are increasingly being used in pressure, acoustic, thermal and optical devices. The performance of these devices in many applications may be enhanced by thin-film technology.The developing Langmuir-Blodgett thin-film deposition technique offers the opportunity to obtain highly oriented and uniform organic-based films in the 10-5000 nm thickness range. Special techniques must be used, however, to assemble these molecules in such a way as to result in polar multilayer films. Several possible deposition techniques are investigated, with one resulting in a polar and pyroelectric film about 50 nm thick.}, language = {en} } @misc{EmbsFunhoffLaschewskyetal.1991, author = {Embs, Frank and Funhoff, Dirk and Laschewsky, Andr{\´e} and Licht, Ulrike and Ohst, Holger and Prass, Werner and Ringsdorf, Helmut and Wegner, Gerhard and Wehrmann, Rolf}, title = {Preformed polymers for Langmuir-Blodgett films- molecular concepts}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17196}, year = {1991}, abstract = {The use of preformed polymers for the preparation of Langmuir-Blodgett (LB) multilayers is reviewed. Principles for polymer self-organization are outlined and the appropriate molecular designs are discussed. Recent developments in the different classes of polymers for LB multilayers are presented, and their outstanding properties highlighted.}, language = {en} } @misc{AntonLaschewsky1991, author = {Anton, Peter and Laschewsky, Andr{\´e}}, title = {Polysoaps via alternating olefin/SO2 copolymers}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17216}, year = {1991}, abstract = {Contents: Introduction Results and discussion - Monomers studied - Monomer properties - Polymerization, copolymer composition and general properties - Polymer properties in aqueous solution Conclusion Experimental part - Materials - Copolymerization with S02 (typical procedure) - Methods}, language = {en} } @misc{Laschewsky1991, author = {Laschewsky, Andr{\´e}}, title = {Oligoethyleneoxide spacer groups in polymerizable surfactants}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17221}, year = {1991}, abstract = {Cationic and zwitterionic polymerizable surfactants bearing tri- and tetraethyleneglycol spacer groups between the polymerizable moiety and the surfactant structure were prepared and polymerized. Monomers and polymers were investigated with respect to their aggregation behavior in aqueous systems and compared to analogous monomers and polymers lacking spacer groups. In the case of the monomeric surfactants, the spacer groups depress both the Kraffttemperature and the critical micelle concentration. the area occupied per molecule at the air-water interface is substantially enlarged by the spacers, whereas the depression of surface tension is nearly constant. Although the monomers with and without spacers are true surfactants, all the polymers are water-insoluble, but form monomolecular layers at the air-water interface. In analogy to the monomer behavior, the incorporation of the spacer groups increases the area occupied per repeat unit at the air-water interface substantially, but hardly affects the surface activity.}, language = {en} } @book{OPUS4-29390, title = {Chemical Physics}, editor = {Z{\"u}licke, Lutz}, publisher = {Elsevier}, address = {Amsterdam [u.a.]}, year = {1991}, language = {en} } @misc{BubeckLaschewskyLupoetal.1991, author = {Bubeck, Christoph and Laschewsky, Andr{\´e} and Lupo, Donald and Neher, Dieter and Ottenbreit, Petra and Paulus, Wolfgang and Prass, Werner and Ringsdorf, Helmut and Wegner, Gerhard}, title = {Amphiphilic dyes for nonlinear optics: Dependence of second harmonic generation on functional group substitution}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17201}, year = {1991}, language = {en} } @misc{KoeberleLaschewskyTsukruk1992, author = {K{\"o}berle, Peter and Laschewsky, Andr{\´e} and Tsukruk, Vladimir}, title = {The structural order of some novel ionic polymers : 1. X-ray scattering studies}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17247}, year = {1992}, abstract = {A set of novel zwitterionic side-chain polyacrylates and polymethacrylates is studied by X-ray scattering. The structural order both in the short-range and long-range scale is investigated. The influence of the polymer backbone, of different locations of the ionic groups in isomeric polymers, of bound water and of added inorganic salts on the bulk structures is studied, and the observed rearrangements are analysed.}, language = {en} } @misc{PeterAndersenHartmannetal.1992, author = {Peter, Martin G. and Andersen, Svend Olav and Hartmann, Rudolf and Miessner, Merle and Roepstorff, Peter}, title = {Catecholamine-protein conjugates : isolation of 4-phenylphenoxazin-2-ones from oxidative coupling of N-acetyldopamine with alipathic amino acids}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17571}, year = {1992}, abstract = {4-Phenylphenoxazinones were isolated after biomimetic oxidation, using diphenoloxidases of insect cuticle, mushroom tyrosinase, or after autoxidation of N-acetyldopamine (Image ) in the presence of β-alanine, β-alanine methyl ester or N-acetyl-L-lysine. They are formed presumably by addition of 2-aminoalkyl-5-alkylphenols to the o-quinone of biphenyltetrol which, in turn, arises from oxidative coupling of. The structures of present the first examples for the assembly of reasonably stable intermediates in the rather complex process of chemical modifications of aliphatic amino acid residues by o-quinones.}, language = {en} } @misc{LaschewskyPaulusRingsdorfetal.1992, author = {Laschewsky, Andr{\´e} and Paulus, Wolfgang and Ringsdorf, Helmut and Schuster, A. and Frick, G. and Mathy, A.}, title = {Mixed polymeric monolayers and Langmuir-Blodgett multilayers with functional low molecular weight guest compounds}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17233}, year = {1992}, abstract = {Mixed monolayers and Langmuir-Blodgett multilayers of functional low molecular weight guest compounds, especially nonlinear optical (NLO) dyes, within the matrix of an amphotropic spacer polymer have been prepared. The polymer matrix enabled the transfer of guest compounds not capable of self-organizing at the air-water interface by themselves. The structure of the LB multilayers and the transfer process were studied by small angle X-ray scattering and UV-visible spectroscopy. Good NLO coefficients were found in the mixed films.}, language = {en} } @misc{AndersenPerterRoepstorff1992, author = {Andersen, Svend Olav and Perter, Martin G. and Roepstorff, Peter}, title = {Cuticle-catalyzed coupling between N-acetylhistidine and N-acetyldopamine}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-16762}, year = {1992}, abstract = {Several types of insect cuticle contain enzymes catalyzing the formation ofof adducts between N-acetyldopamine (NADA) and N-acetylhistidine (NAH). Two such adducts, NAH-NADA-I and NAH NADA-II, have been isolated and their structures determined. In one of the adducts the link connecting the two residues occurs between the I-position (ß-position) in the NADA side chain and the 1-N atom (τ-N) in the imidazole ring of histidine. Diphenoloxidase activity alone is not sufficient for formation of this adduct, whereas extracts containing both diphenoloxidase and o-quinone-p-quinone methide isomerase activities catalyze the coupling reaction. The adduct consists of a mixture of two diastereomers and they are presumably formed by spontaneous reaction between enzymatically produced NADA-p-quinone methide and N-acetylhistidine. The other adduct has been identified as a ring addition product of N-acetylhistidine and NADA. In contrast to the former adduct it can be formed by incubation of the two substrates with mushroom tyrosinase alone. An adduct between N-acetylhistidine and the benzodioxan-type NADA-dimer is produced in vitro, when the N-acetylhistidine-NADA adduct is incubated with NADA and locust cuticle containing a 1,2-dehydro-NADA generating enzyme system. Trimeric NADA-polymerization products of the substituted benzodioxan-type have been obtained from in vivo sclerotized locust cuticle, confirming the ability of cuticle to produce NADA-oligomers. The results indicate that some insect cuticles contain enzymes promoting linkage of oxidized NADA to histidine residues. It is suggested that histidine residues in the cuticular proteins can serve as acceptors for oxidized NADA and that further addition of NADA-residues to the phenolic groups of bound NADA can occur, resulting in formation of protein-linked NADA-oligomers. The coupling reactions identified may be an important step in natural cuticular sclerotization.}, language = {en} } @misc{TsukrukMischenkoKoeberleetal.1992, author = {Tsukruk, Vladimir and Mischenko, Nikolay and K{\"o}berle, Peter and Laschewsky, Andr{\´e}}, title = {The structural order of some novel ionic polymers; 2. : Models of molecular packing}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17256}, year = {1992}, abstract = {The molecular packing and spatial correlations of two isomeric zwitterionic polymethacrylates and one polyacrylate analog are studied by means of X-ray analysis and conformational calculations. The analysis of the correlation functions and density distribution profiles suggest a double-layered molecular packing which is discussed for the three polymers investigated, with respect to their different chemical structures. Whereas the zwitterionic polymethacrylates studied exhibit liquid-like short-range order, the polyacrylate analog exhibits an ordered double-layered superstructure.}, language = {en} } @article{HerzschuhWenzlawiakPlaggenborgetal.1992, author = {Herzschuh, R. and Wenzlawiak, B. and Plaggenborg, L. and Mickler, Wulfhard and Uhlemann, Erhard}, title = {The characterization of the active components in commercial ß-diketone-type extractants LIX 54 and MX 80 A}, year = {1992}, language = {en} } @article{MicklerUhlemann1992, author = {Mickler, Wulfhard and Uhlemann, Erhard}, title = {Liquid-Liquid-Extraktion of copper from ammoniacal solutions with ß-diketones}, year = {1992}, language = {en} } @article{KleinpeterHartmannSchrothetal.1992, author = {Kleinpeter, Erich and Hartmann, J{\"u}rgen and Schroth, W. and Hofer, O. and Kalchhauser, H. and Wurz, G.}, title = {Synthesis and conformational behaviour of Ditosyldiaza[2.2]orthometacyclophanes}, year = {1992}, language = {en} } @article{KleinpeterStohssSchroth1992, author = {Kleinpeter, Erich and Stohß, S. and Schroth, W.}, title = {Stereochemistry and complexational behaviour of dibenzo-crown ethers}, year = {1992}, language = {en} } @misc{AntonLaschewsky1993, author = {Anton, Peter and Laschewsky, Andr{\´e}}, title = {Zwitterionic polysoaps with reduced density of surfactant side groups}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17301}, year = {1993}, abstract = {Several zwitterionic polymers were prepared by radical homopolymerization of surfactant monomers which bear diallyl, diene or vinylcyclopropane moieties. These polymer systems were complemented by alternating copolymers of appropriate zwitterionic vinyl compounds. Thus, polymers with reduced (as compared with simple vinylic homopolymers, or statistical copolymers) and well defined density of surfactant side groups are obtained. The solubilities found for these polymers are dominated by polymer geometry rather than by the balance of hydrophilic and hydrophobic fragments, thus corroborating a main-chain spacer model proposed recently. All water-soluble polymers exhibit characteristic features of classical polysoaps, as shown by surface tension measurements and by solubilization of hydrophobic dyes. In contrast, the water-insoluble copolymers are capable to form stable monolayers at the air-water interface.}, language = {en} } @misc{AntonKoeberleLaschewsky1993, author = {Anton, Peter and K{\"o}berle, Peter and Laschewsky, Andr{\´e}}, title = {Recent developments in the field of micellar polymers}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17263}, year = {1993}, abstract = {This article describes recent achievements in the field of micellar polymers, or polysoaps. Taking advantage of zwitterionic model polymers, systematic variations of the molecular architecture have provided an improved understanding of the relationship between the molecular structure of the polymers and their key properties such as surface activity and solubilization capacity. Useful rules are established, which take into account much of the previous data in the literature.}, language = {en} } @misc{LaschewskySchulzHanke1993, author = {Laschewsky, Andr{\´e} and Schulz-Hanke, Wolfgang}, title = {Ring-opening metathesis polymerization of amphiphilic norbornenes functionalized with non-linear optical (NLO) chromophores}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-26917}, year = {1993}, abstract = {Contents: Potential of amphiphilic NLO polymers Ring-opening metathesis polymerization (ROMP) Properties of the polymers Monolayer properties Experimental part - Methods - Materials - Analytical data - General polymerization procedure Conclusions}, language = {en} } @article{Mickler1993, author = {Mickler, Wulfhard}, title = {Liquid-liquid-extraction of copper from ammoniacal solution with 4-acylpyrazol-5-ones and ß-diketones}, isbn = {1-85861-042-7}, year = {1993}, language = {en} } @article{MicklerUhlemann1993, author = {Mickler, Wulfhard and Uhlemann, Erhard}, title = {Liquid-Liquid-Extraction of copper from ammoniacal solution with cyclohexyl substituted ß-diketones}, year = {1993}, language = {en} } @article{MicklerUhlemann1993, author = {Mickler, Wulfhard and Uhlemann, Erhard}, title = {Liquid-Liquid-Extraction of copper from ammoniacal solutions with 4-Acylpyrazolones}, year = {1993}, language = {en} } @article{HaufeRolleKleinpeteretal.1993, author = {Haufe, G. and Rolle, U. and Kleinpeter, Erich and Kivikoski, J. and Rissanen, K.}, title = {N-Heterocyclization in electrophilic haloamination reactions of 1,5-cyclooctadiene : formation of the granatanine and homotropane skeletons}, year = {1993}, language = {en} } @article{KleinpeterThomasUhligetal.1993, author = {Kleinpeter, Erich and Thomas, Steffen and Uhlig, G. and Rudorf, Wolf-Dieter}, title = {Study of the distribution of pi-Electrons in Push-Pull Alkenes by 1H an 13C NMR spectroscopy}, year = {1993}, language = {en} } @article{LehmannKleinpeter1993, author = {Lehmann, J. and Kleinpeter, Erich}, title = {1H NMR Lanthanideinduced Shift (LIS) investigations of highly flexible molecules : a new approach ; Part II}, year = {1993}, language = {en} } @article{LehmannKleinpeter1993, author = {Lehmann, J. and Kleinpeter, Erich}, title = {1H NMR Lanthanideinduced Shift (LIS) investigations of highly flexible molecules : a new approach}, year = {1993}, language = {en} } @misc{KoeberleLaschewsky1994, author = {K{\"o}berle, Peter and Laschewsky, Andr{\´e}}, title = {Hybrid materials from organic polymers and inorganic salts}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-26884}, year = {1994}, abstract = {The prepaparation of amorphous, homogeneous blends of zwitterionic polymers and transition metal salts was investigated. Homogeneous miscibility was achieved in many cases up to equimolar amounts of salt, depending on the anion and cation chosen. Various analytical techniques point to a solid state solution of the inorganic ions in the polymer matrix.}, language = {en} } @misc{AntonLaschewsky1994, author = {Anton, Peter and Laschewsky, Andr{\´e}}, title = {Solubilization by polysoaps}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17327}, year = {1994}, abstract = {The aqueous solubilization power of several series of micellar homopolymers and copolymers (polysoaps) is investigated. Using five insoluble or poorly water-soluble dyes, comparisons of the capacities are made with respect ot the influence of structural variables such as the polymer backbone, the polymer geometry, the comonomer content, and the charge of the hydrophilic group. Some guidelines for polysoap structures suited for efficient solubilization are established. Noteworthy is that the solubilization capacities of the polysoaps are neither linked to the ability to reduce the surface tension of water, nor to the polarity of the solubilization sites deduced from spectroscopic probes.}, language = {en} } @article{Soyez1994, author = {Soyez, Konrad}, title = {Problems of practical implementation of ecological process technologies}, year = {1994}, language = {en} } @article{KoetzKosmella1994, author = {Koetz, Joachim and Kosmella, Sabine}, title = {Interactions between Poly(diallyldimethylammonium Chloride) and Poly(Acrylic Acid) in dependence on polymer concentration}, year = {1994}, language = {en} } @article{KoetzKosmella1994, author = {Koetz, Joachim and Kosmella, Sabine}, title = {Interactions between polyanion-polycation systems and kaolin}, year = {1994}, language = {en} } @article{KrauseBuchheim1994, author = {Krause, Jens-Peter and Buchheim, Wolfgang}, title = {Ultrastructure of o/w emulsions stabilized by faba bean protein isolates}, year = {1994}, language = {en} } @article{LachmannBoergerKleffe1994, author = {Lachmann, Joachim and B{\"o}rger, Ilka and Kleffe, Reinhard}, title = {Decomposition of chlorinated and fluorinated hydrocarbons in plasma jets}, year = {1994}, language = {en} } @article{SaintEspesChapuisatZuhrt1994, author = {Saint-Esp{\´e}s, C{\´e}cile and Chapuisat, Xavier and Zuhrt, Christian}, title = {A weak-mode representation of floppy molecules. III : theoretical assignment of spectroscopic states}, year = {1994}, language = {en} } @article{Schwenke1994, author = {Schwenke, Klaus Dieter}, title = {Rapeseed proteins}, year = {1994}, language = {en} } @article{UhlemannSchildeKraudelt1994, author = {Uhlemann, Erhard and Schilde, Uwe and Kraudelt, Heide}, title = {Separation of the oxoanions of germanium, tin, arsenic, antimony, tellurium, molybdenum and tungsten with a special chelating resin containing methylaminoglucitol groups}, year = {1994}, language = {en} } @article{UhlemannSchildeKraudelt1994, author = {Uhlemann, Erhard and Schilde, Uwe and Kraudelt, Heide}, title = {Sorption of coinage metal cyano complexes by a chelating resin containing amino-glucitol groups}, year = {1994}, language = {en} } @article{LeyPeter1994, author = {Ley, J. P. and Peter, Martin G.}, title = {Synthesis of N-(2-Acetamido-2-deoxy-ß-D-glucopyranosyl)- and of N-(N,N-Diacetylchitobiosyl)-amide of lhistidine}, issn = {0039-7881}, year = {1994}, language = {en} } @article{PeterAndersen1994, author = {Peter, Martin G. and Andersen, S. O.}, title = {The molecular architecture of the insect exoskeleton}, year = {1994}, language = {en} } @article{SchumacherWanderslebPetersenPeter1994, author = {Schumacher-Wandersleb, Michael H. M. G. and Petersen, Stefan and Peter, Martin G.}, title = {Preparation of the N-Acetylglucosaminidase inhibitor 1-Acetamido-1,2,5-tride oxy-2,5-imino-D-glucitol from methyl a-D-Mannopyranoside}, year = {1994}, language = {en} } @article{PeterLeyPetersenetal.1994, author = {Peter, Martin G. and Ley, J. P. and Petersen, Stefan and Londershausen, M. and Schumacher-Wandersleb, Michael H. M. G. and Spindler, Klaus-Dieter and Spindler-Barth, Margarethe and Turberg, Andreas}, title = {Synthesis of chitinase inhibitors}, year = {1994}, language = {en} } @article{KroescheCrescenziHoffbaueretal.1994, author = {Kr{\"o}sche, Christian and Crescenzi, Orlando and Hoffbauer, Wilfried and Jansen, Martin and Napolitano, Alessandra and Prota, Guiseppe and Peter, Martin G.}, title = {Synthesis of dopamines labelled with 13C in the alpha- or beta-side chain positions, and their application for structure studies on melanins by solid state NMR spectroscopy}, year = {1994}, language = {en} } @article{UhlemannLabudaVanickovaetal.1994, author = {Uhlemann, Erhard and Labuda, Jan and Vanickova, M. and Mickler, Wulfhard}, title = {Applicability of chemically modified electrodes for the determination of copper species in natural water}, year = {1994}, language = {en} } @article{UhlemannSchildeHefeleetal.1994, author = {Uhlemann, Erhard and Schilde, Uwe and Hefele, Heike and Ludwig, Eberhard}, title = {Crystal and molecular structure of 2,2'-dihydroxyazobenzene}, issn = {0023-4753}, year = {1994}, language = {en} } @article{UhlemannGloeStephanetal.1994, author = {Uhlemann, Erhard and Gloe, Karsten and Stephan, Holger and Heitzsch, Olaf and Bukowsky, Heinz and Pollex, Rolf and Weber, Erwin}, title = {Preorganized endo-dicarboxylic host macrocycles having superior extraction selectivity for small alkaline earth metal ions}, year = {1994}, language = {en} } @article{KrossnerZuelickeVetteretal.1994, author = {Kroßner, Thomas and Z{\"u}licke, Lutz and Vetter, Reinhard and Peyerimhoff, Sigrid D. and Peric, Miljenko}, title = {Ab-initio study of the potential energy surfaces of doublet valence and Rydberg states of FCO}, year = {1994}, language = {en} }