@article{GyollaiSchanzenbachSomsaketal.2002, author = {Gyollai, Viktor and Schanzenbach, Dirk and Somsak, Laszlo and Linker, Torsten}, title = {Addition of malonyl radicals to glycals with C-1 acceptor groups: remarkable influence of the substituents on the product distribution}, year = {2002}, language = {en} } @phdthesis{Khrenov2002, author = {Khrenov, Viktor}, title = {Anwendung der Heterophasenpolymerisation und CeIV Chemie zur Synthese von Blockcopolymeren}, pages = {119 S.}, year = {2002}, language = {de} } @phdthesis{Krass2002, author = {Kraß, Henning}, title = {Aufbau und Untersuchung ultrad{\"u}nner Filme aus Metallkomplexen auf Oberfl{\"a}chen}, pages = {86 S.}, year = {2002}, language = {de} } @article{Koetz2002, author = {Koetz, Joachim}, title = {Braucht man Polyelektrolyte zur Selbstorganisation?}, year = {2002}, language = {de} } @article{Peter2002, author = {Peter, Martin G.}, title = {Chitin and Chitosan from Animal Sources}, isbn = {3-527-30227-1}, year = {2002}, abstract = {A review on the chem. and biochem. of chitin and the chem. and application of chitosan. The following topics were discussed: structure of chitin and chitosan; occurrence and physiol. functions of chitin; detection of chitin in animals and anal. of chitin and chitosan; biosynthesis and biodegrdn. of chitin in animals; prodn. of chitin and chitosan; properties of chitin and chitosan; and applications of chitin and chitosan.}, language = {en} } @article{Peter2002, author = {Peter, Martin G.}, title = {Chitin and Chitosan from Fungi}, isbn = {3-527-30227-1}, year = {2002}, language = {en} } @article{KamlageSefkowZimmermannetal.2002, author = {Kamlage, Stefan and Sefkow, Michael and Zimmermann, Nicole and Peter, Martin G.}, title = {Concise synthesis of (+)-beta-benzyl gamma-butyrolactones from butynediol}, year = {2002}, language = {en} } @article{VirtanenArotcarenaHeiseetal.2002, author = {Virtanen, Janne and Arotcarena, Michel and Heise, Bettina and Ishaya, Sultana and Laschewsky, Andr{\´e} and Tenhu, Heikki}, title = {Dissolution and aggregation of a poly (NIPA-block-sulfobetaine) copolymer in pure and saline aqueous solutions}, year = {2002}, abstract = {Thermal properties of block copolymer, poly(N-isopropyl acrylamide)-block-poly(3-[N-(3-methacrylamido-propyl)- N,N-dimethyl]-ammonio propane sulfonate), PNIPA-b-PSPP have been studied in pure and saline (NaCl) aqueous solutions by dynamic laser light scattering (DLS). The copolymer [Mw(PNIPA) 10800 g/mol and Mw(PSPP) 9700 g/mol] exhibits both an upper (UCST 9 oC) and lower (LCST 32 oC) critical solution temperatures in pure water. The addition of NaCl enhances the solubility of the zwitterionic polymer, PSPP, leading to the disappearance of the UCST. On the other hand, the solubility of PNIPA in water decreases as NaCl is added. At 20 oC the copolymer shows a bimodal size distribution through the NaCl concentration range of 0-0.93 M above a certain limiting polymer concentration. The slow and fast components of the diffusion coefficients of the polymer have been calculated. A gradual addition of salt turns the mutual interactions from zwitterionic attractions between PSPP blocks to hydrophobic attractions between PNIPA blocks. The formation of the aggregates and the aggregate sizes at T < UCST and T > LCST are influenced by polymer and salt concentrations. Below UCST the aggregates in saline polymer solutions are larger than those in pure polymer solutions. Above LCST the aggregate size is determined by the salt concentration.}, language = {en} } @phdthesis{Kasparova2002, author = {Kasparova, Pavla}, title = {Doppelthydrophile Blockcopolymere als Mineralisationstemplate}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-0000483}, school = {Universit{\"a}t Potsdam}, year = {2002}, abstract = {Die vorliegende Arbeit besch{\"a}ftigt sich mit der Synthese und den Eigenschaften von doppelthydrophilen Blockcopolymeren und ihrer Anwendung in einem biomimetischen Mineralisationsprozeß von Calciumcarbonat und Bariumsulfat. Doppelthydrophile Blockcopolymere bestehen aus einem hydrophilen Block, der nicht mit Mineralien wechselwirkt und einem zweiten Polyelektrolyt-Block, der stark mit Mineraloberfl{\"a}chen wechselwirkt. Diese Blockcopolymere wurden durch ring{\"o}ffnende Polymerisation von N-carboxyanhydriden (NCA′s) und a-methoxy-ω-amino[poly(ethylene glycol)] PEG-NH2 als Initiator hergestellt. Die hergestellten Blockcopolymere wurden als effektive Wachstumsmodifikatoren f{\"u}r die Kristallisation von Calciumcarbonat und Bariumsulfat Mineralien eingesetzt. Die so erhaltenen Mineralpartikel (Kugeln, Hantel, eif{\"o}rmige Partikel) wurden durch Lichtmikroskopie in L{\"o}sung, SEM und TEM charakterisiert. R{\"o}ntgenweitwinkelstreuung (WAXS) wurde verwendet, um die Modifikation von Calciumcarbonat zu ermitteln und die Gr{\"o}ße der Calciumcarbonat- und Bariumsulfat-Nanopartikel zu ermitteln.}, subject = {Blockcopolymere ; Polyaminos{\"a}uren ; Hydrophile Verbindungen ; Chemische Synthese ; Ring{\"o}ffnungspolymerisation | Calciumcarbonat ; Biomineralisation}, language = {de} } @phdthesis{Engelhardt2002, author = {Engelhardt, Ulrike}, title = {Eine effiziente und enantioselektive Totalsynthese von Epipodophyllotoxin}, publisher = {Ed. L{\"o}wengasse}, address = {Radolfzell}, isbn = {3-925466-65-7}, pages = {230 S.}, year = {2002}, language = {de} }