Brief overview on 2H NMR studies of polysiloxane‐based side‐chain nematic elastomers1. (12th June 2014)

• Record Type: Journal Article
• Authors: Domenici, Valentina; Milavec, Jerneja; Zupančič, Blaž; Bubnov, Alexej; Hamplova, Vera; Zalar, Boštjan; Dong, Ronald Y.
• Is Part Of: Magnetic resonance in chemistry. Volume 52:Number 10(2014:Oct.)
• Page Start: 649
• Page End: 655
• Publication Date: 2014-06-12
• Subjects: Nuclear magnetic resonance spectroscopy -- Periodicals; Chemistry, Organic -- Periodicals; Magnetic resonance -- Periodicals; 538.36
• DOI: 10.1002/mrc.4092
• Languages: English
• ISSNs: 0749-1581

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>This is a brief overview on recent studies on liquid crystalline elastomers (LCEs) based on polysiloxane chain, in the form of monodomain films, selectively ²H‐labeled in different parts of the LCE samples, i.e. on the crosslinker or mesogenic units. ²H NMR spectroscopic techniques were used to measure the temperature dependence of the quadrupolar splittings, line widths and relaxation times, <italic>T</italic>₁ and <italic>T</italic>₂. From these data, several information about the orientational order parameter, <italic>S</italic>, of various LCE fragments, thermodynamic features of the isotropic–nematic transition and main motional processes could be generalized for this type of elastomers. Copyright © 2014 John Wiley &amp; Sons, Ltd.</p> </abstract>