@article{GlatzelNoackSchanzenbachetal.2020, author = {Glatzel, Julia and Noack, Sebastian and Schanzenbach, Dirk and Schlaad, Helmut}, title = {Anionic polymerization of dienes in 'green' solvents}, series = {Polymer international}, volume = {70}, journal = {Polymer international}, number = {2}, publisher = {Wiley}, address = {Hoboken}, issn = {0959-8103}, doi = {10.1002/pi.6152}, pages = {181 -- 184}, year = {2020}, abstract = {Isoprene and beta-myrcene were polymerized by anionic polymerization in bulk and in the 'green' ether solvents cyclopentyl methyl ether and 2-methyltetrahydrofuran and, for comparison, in cyclohexane and tetrahydrofuran. The polydienes produced in bulk and in cyclohexane contained high amounts of 1,4 units (>90\%) whereas those produced in ether solvents were rich in 1,2 and 3,4 units (36\%-86\%). Comparison of the microstructures and glass transition temperatures of the polydienes obtained in the various solvents suggests that conventionally used solvents can be substituted by environmentally more friendly alternatives.}, language = {en} } @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} } @article{MaticHessSchanzenbachetal.2020, author = {Matic, Aleksandar and Hess, Andreas and Schanzenbach, Dirk and Schlaad, Helmut}, title = {Epoxidized 1,4-polymyrcene}, series = {Polymer chemistry}, volume = {11}, journal = {Polymer chemistry}, number = {7}, publisher = {Royal Society of Chemistry}, address = {Cambridge}, issn = {1759-9954}, doi = {10.1039/c9py01783f}, pages = {1364 -- 1368}, year = {2020}, abstract = {1,4-Polymyrcene was synthesized by anionic polymerization and epoxidized using meta-chloroperbenzoic acid. Samples with different degrees of epoxidation (25\%, 49\%, 74\%, and 98\%) were prepared and examined according to their chemical and thermal properties. Epoxidation was found to increase the glass transition temperature (T-g = 14 degrees C for the 98\% epoxidized 1,4-polymyrcene) as well as the shelf live (>10 months). The trisubstituted epoxide groups were remarkably stable against nucleophiles under basic conditions but cross-linked or hydrolyzed in the presence of an acid. Also, highly epoxidized 1,4-polymyrcene readily cross-linked upon annealing at 260 degrees C to produce an epoxy resin.}, language = {en} } @article{NoackSchanzenbachKoetzetal.2018, author = {Noack, Sebastian and Schanzenbach, Dirk and Koetz, Joachim and Schlaad, Helmut}, title = {Polylactide-based amphiphilic block copolymers}, series = {Macromolecular rapid communications}, volume = {40}, journal = {Macromolecular rapid communications}, number = {1}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1022-1336}, doi = {10.1002/marc.201800639}, pages = {6}, year = {2018}, abstract = {The aqueous self-assembly behavior of a series of poly(ethylene glycol)-poly(l-/d-lactide) block copolymers and corresponding stereocomplexes is examined by differential scanning calorimetry, dynamic light scattering, and transmission electron microscopy. Block copolymers assemble into spherical micelles and worm-like aggregates at room temperature, whereby the fraction of the latter seemingly increases with decreasing lactide weight fraction or hydrophobicity. The formation of the worm-like aggregates arises from the crystallization of the polylactide by which the spherical micelles become colloidally unstable and fuse epitaxically with other micelles. The self-assembly behavior of the stereocomplex aggregates is found to be different from that of the block copolymers, resulting in rather irregular-shaped clusters of spherical micelles and pearl-necklace-like structures.}, language = {en} } @article{ReitenbachGeigerWangetal.2023, author = {Reitenbach, Julija and Geiger, Christina and Wang, Peixi and Vagias, Apostolos N. and Cubitt, Robert and Schanzenbach, Dirk and Laschewsky, Andr{\´e} and Papadakis, Christine M. and M{\"u}ller-Buschbaum, Peter}, title = {Effect of magnesium salts with chaotropic anions on the swelling behavior of PNIPMAM thin films}, series = {Macromolecules : a publication of the American Chemical Society}, volume = {56}, journal = {Macromolecules : a publication of the American Chemical Society}, number = {2}, publisher = {American Chemical Society}, address = {Washington}, issn = {0024-9297}, doi = {10.1021/acs.macromol.2c02282}, pages = {567 -- 577}, year = {2023}, abstract = {Poly(N-isopropylmethacrylamide) (PNIPMAM) is a stimuli responsive polymer, which in thin film geometry exhibits a volume-phase transition upon temperature increase in water vapor. The swelling behavior of PNIPMAM thin films containing magnesium salts in water vapor is investigated in view of their potential application as nanodevices. Both the extent and the kinetics of the swelling ratio as well as the water content are probed with in situ time-of-flight neutron reflectometry. Additionally, in situ Fourier-transform infrared (FTIR) spectroscopy provides information about the local solvation of the specific functional groups, while two-dimensional FTIR correlation analysis further elucidates the temporal sequence of solvation events. The addition of Mg(ClO4)2 or Mg(NO3)2 enhances the sensitivity of the polymer and therefore the responsiveness of switches and sensors based on PNIPMAM thin films. It is found that Mg(NO3)2 leads to a higher relative water uptake and therefore achieves the highest thickness gain in the swollen state.}, language = {en} } @article{RottmannSynstadThieleetal.1999, author = {Rottmann, Antje and Synstad, Bjoenar and Thiele, G. and Schanzenbach, Dirk and Eijsink, Vincent G. H. and Peter, Martin G.}, title = {Approaches towards the design of new chitinase inhibitors}, isbn = {3-9806494-5-8}, year = {1999}, language = {en} } @article{SchanzenbachMaternPeter1997, author = {Schanzenbach, Dirk and Matern, Christa-Maria and Peter, Martin G.}, title = {Cleavage of chitin by means of sulfurice acid/acetc anhydride and isolation of peracetylated chito- oligosaccharides}, year = {1997}, language = {en} } @article{SchanzenbachMaternPeter1997, author = {Schanzenbach, Dirk and Matern, Christa-Maria and Peter, Martin G.}, title = {Synthesis of glycosylamines and glycopeptides}, year = {1997}, language = {en} } @article{SchanzenbachPeter1997, author = {Schanzenbach, Dirk and Peter, Martin G.}, title = {NMR spectroscopy of chito-oligosaccharides}, year = {1997}, language = {en} } @article{SchanzenbachPeter1997, author = {Schanzenbach, Dirk and Peter, Martin G.}, title = {Chromatography of chito-oligosaccarides}, year = {1997}, language = {en} }