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

被引：81

作者：

Sanchez-Ferrer, Antoni ^{[1
,2
]}

Merekalov, Alexey ^{[3
]}

Finkelmann, Heino ^{[2
]}

机构：

[1] Swiss Fed Inst Technol, Food & Soft Mat Sci Grp, Inst Food Nutr & Hlth, CH-8092 Zurich, Switzerland

[2] Univ Freiburg, Inst Macromol Chem, D-79104 Freiburg, Germany

[3] Russian Acad Sci, AV Topchiev Petrochem Synth Inst, Moscow, Russia

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2011年 / 32卷 / 08期

关键词：

activation energy; azobenzene; nematic; photo-isomerization; side-chain liquid-crystalline elastomer; stress; thermal-isomerization; TRANS ISOMERIZATION; BEHAVIOR; CHROMOPHORES; POLYMERS; MUSCLE;

D O I：

10.1002/marc.201100005

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

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.

引用

页码：671 / 678

页数：8

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