𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Opto-Mechanical Effect in Photoactive Nematic Side-Chain Liquid-Crystalline Elastomers

✍ Scribed by Antoni Sánchez-Ferrer; Alexey Merekalov; Heino Finkelmann

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
826 KB
Volume
32
Category
Article
ISSN
1022-1336

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The mechanical behaviour of monodomain nematic side‐chain liquid‐crystalline elastomers containing azoderivatives as pendant groups or crosslinkers has been studied under UV irradiation and in the darkness at different temperatures. From the evaluation of the opto‐mechanical experiments, the mechanical efficiency, kinetic rates, activation energies and the isomerization mechanism of the azocompounds in the liquid‐crystalline matrix could be determined, as well as the effect of the chemical constitution of the azobenzene derivatives and their role in the elastomeric network. magnified image

📜 SIMILAR VOLUMES

Side-chain Cholesteric Liquid Crystallin
Side-chain Cholesteric Liquid Crystalline Elastomers Derived from Nematic Bis-olefinic Crosslinking Units
✍ Bao-Yan Zhang; Jian-She Hu; Ying-Gang Jia; Bing-Guang Du 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 196 KB

## Abstract The synthesis of the nematic crosslinking agent (4′‐allyloxy‐benzoyl)‐(4″‐undec‐10‐en‐1‐oyl‐benzoyl)‐__p__‐benzenediolate (**M**‐**1**), the cholesteric monomer cholesteryl undec‐10‐en‐1‐oate (**M**‐**2**) and side‐chain cholesteric liquid crystalline elastomers is described. The chemic

Phase Biaxility in Smectic-A Side-Chain
Phase Biaxility in Smectic-A Side-Chain Liquid Crystalline Elastomers
✍ Rebekka Storz; Ansgar Komp; Anke Hoffmann; Heino Finkelmann 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 377 KB

## Abstract ^2^H NMR investigations on the biaxial phase behavior of smectic‐A liquid crystalline side‐chain elastomers are presented. Biaxiality parameters were determined by measuring the quadrupolar splitting of two spin probes, namely benzene‐d~6~ and hexamethylbenzene‐d~18~, at various angles

Kerr effect in a laterally substituted s
Kerr effect in a laterally substituted side-chain liquid-crystalline polymer
✍ Alexei S. Merekalov; Heino Finkelmann 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 289 KB

## Abstract The static and dynamic Kerr effects in a liquid‐crystalline (LC) side‐end polymer with a laterally substituted mesogenic fragment are studied. The characteristic relaxation times of the two different relaxation processes observed diverge at the same temperature. The main feature of the