Photoluminescent Nematic Liquid Crystalline Elastomer with a Thermomechanical Emission Variation Function

被引：31

作者：

Wei, Renbo ^{[1
]}

He, Yaning ^{[1
]}

Wang, Xiaogong ^{[1
]}

Keller, Patrick ^{[2
,3
,4
]}

机构：

[1] Tsinghua Univ, Dept Chem Engn, Lab Adv Mat MOE, Beijing 100084, Peoples R China

[2] Univ Paris 06, Ctr Rech, Inst Curie, CNRS UMR 168, F-75248 Paris 05, France

[3] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA

[4] Univ Colorado, Liquid Crystal Mat Res Ctr, Boulder, CO 80309 USA

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2014年 / 35卷 / 18期

关键词：

emission variation; liquid crystalline elastomer; microactuator; photoluminescence; thermomechanical; INDUCED COLOR CHANGES; ARTIFICIAL MUSCLES; POLYMER BLENDS; DEFORMATION; ACTUATORS; BEHAVIOR; LIGHT; GELS; PARTICLES; FILM;

D O I：

10.1002/marc.201400264

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Nematic liquid crystalline elastomer (LCE) microactuators are developed, showing simultaneous thermomechanical deformation and photoluminescence (PL) emission variation functions. The microactuators are prepared by a method combining soft-lithography and photo-polymerization/ crosslinking. 1,4-Bis(alpha-cyano-4-methoxystyryl)benzene as the PL dye is synthesized, characterized, and introduced into LCEs as a dopant in the preparation process. During the heating process, PL emission of the LCE micropillars under blue light excitation becomes significantly weak when the micropillars contract. When cooling down, the emission completely recovers as the micropillars stretches back to their original shape. The PL intensity variation at the transition is proved to be related to the thermomechanical deformation.

引用

页码：1571 / 1577

页数：7

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