Počet záznamů: 1
Dynamic investigations of liquid crystalline elastomers and their constituents by .sup.2./sup.H NMR spectroscopy
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SYSNO ASEP 0499774 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Dynamic investigations of liquid crystalline elastomers and their constituents by 2H NMR spectroscopy Tvůrce(i) Milavec, J. (SI)
Rešetič, A. (SI)
Bubnov, Alexej (FZU-D) RID, ORCID, SAI
Zalar, B. (SI)
Domenici, V. (IT)Celkový počet autorů 5 Zdroj.dok. Liquid Crystals. - : Taylor & Francis - ISSN 0267-8292
Roč. 45, 13-15 (2018), s. 2158-2173Poč.str. 16 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova liquid crystalline elastomer ; NMR ; mesogen ; crosslinker ; dynamic ; liquid crystals ; artificial muscles ; soft actuators Vědní obor RIV JJ - Ostatní materiály Obor OECD Materials engineering CEP GA16-12150S GA ČR - Grantová agentura ČR Institucionální podpora FZU-D - RVO:68378271 UT WOS 000455014800026 EID SCOPUS 85049966661 DOI 10.1080/02678292.2018.1494858 Anotace Several side-chain liquid single crystalline elastomers (LSCEs) were investigated by means of 2H NMR spectroscopy focusing on the temperature dependence of the spectral line width and spectral shape, as well as the T-dependence of spin-lattice and spin-spin relaxation times (T1 and T2). All measurements were performed at the Larmor frequency of 76.753 MHz for 2H. The LSCEs were prepared in the form of monodomain films by using either 2H-labelled monomers (or co-monomers), 2H-labelled crosslinkers or 2H-labelled molecular probes free to diffuse in the LSCE matrix. The main features of the measured 2H NMR properties (static and dynamic ones) in these different cases were discussed and compared with those of low-molecular-weight mesogens in the nematic and SmA phases. Among all investigated LSCEs, those 2H-labelled on the crosslinker sites present distinct properties either on the 2H NMR spectral line width and spectral shape in the paranematic and in the nematic phases. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2019
Počet záznamů: 1