caa a22 4500 475764684 CHVBK 20180406123601.0 cr unu---uuuuu 170329e20000801xx s 000 0 eng 10.1007/s003960000313 doi (NATIONALLICENCE)springer-10.1007/s003960000313 Ordering in a nematic side-chain polymer. A proton and deuterium nuclear magnetic resonance study [Elektronische Daten] [P. Holstein, E. B. Barmatov, D. Geschke, M. Bender, V. P. Shibaev]  The aim of this work is to study in detail the orientational structure of liquid-crystalline polymers with different molecular weight. The advantage of our approach is the use of broad-band 1H and 2H NMR spectroscopy for the analysis of the orientational order of the main-chain and mesogenic groups in conjunction with small-angle neutron scattering results. Investigations of a series of partially deuterated side-chain polymers with methoxybenzylbenzoate mesogenic groups have been carried out. The deuteration of the main chain enables separate access to order and orientation effects of the side chain and the main chain. The molecular orientation of the substances investigated can be frozen in its nematic phase below the glass-transition temperature. It is independent of the molecular weight, whereas the dynamics of the director reorientation (rotational viscosity) in the nematic phase strongly depends on the molecular weight. The main-chain deuterons provide powder spectra after orientation of the polymer in magnetic fields, indicating a very weak or lacking orientational anisotropy. A complete decoupling of the main and the side group can be deduced. Springer-Verlag Berlin Heidelberg, 2000 Key words 1H and 2H nuclear magnetic resonance nationallicence Orientational dynamics nationallicence Side-chain liquid-crystalline polymer nationallicence Main-chain behaviour nationallicence Holstein P. University of Leipzig Faculty of Physics and Geosciences Institute of Experimental Physics I Polymer Research Group Linnéstrasse 5, 04103 Leipzig, Germany e-mail: holstein@physik.uni-leipzig.de, DE aut Barmatov E. B. Moscow State University Chemistry Department 119899 Moscow, Russia, RU aut Geschke D. University of Leipzig Faculty of Physics and Geosciences Institute of Experimental Physics I Polymer Research Group Linnéstrasse 5, 04103 Leipzig, Germany e-mail: holstein@physik.uni-leipzig.de, DE aut Bender M. University of Leipzig Faculty of Physics and Geosciences Institute of Experimental Physics I Polymer Research Group Linnéstrasse 5, 04103 Leipzig, Germany e-mail: holstein@physik.uni-leipzig.de, DE aut Shibaev V. P. Moscow State University Chemistry Department 119899 Moscow, Russia, RU aut https://doi.org/10.1007/s003960000313 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s003960000313 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Holstein P. University of Leipzig Faculty of Physics and Geosciences Institute of Experimental Physics I Polymer Research Group Linnéstrasse 5, 04103 Leipzig, Germany e-mail: holstein@physik.uni-leipzig.de, DE aut NATIONALLICENCE 700 1- Barmatov E. B. Moscow State University Chemistry Department 119899 Moscow, Russia, RU aut NATIONALLICENCE 700 1- Geschke D. University of Leipzig Faculty of Physics and Geosciences Institute of Experimental Physics I Polymer Research Group Linnéstrasse 5, 04103 Leipzig, Germany e-mail: holstein@physik.uni-leipzig.de, DE aut NATIONALLICENCE 700 1- Bender M. University of Leipzig Faculty of Physics and Geosciences Institute of Experimental Physics I Polymer Research Group Linnéstrasse 5, 04103 Leipzig, Germany e-mail: holstein@physik.uni-leipzig.de, DE aut NATIONALLICENCE 700 1- Shibaev V. P. Moscow State University Chemistry Department 119899 Moscow, Russia, RU aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer