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Kang‐Han Kim Yong Min Lee Myung‐Hyun Ryou Yong‐Cheol Jeong 《Journal of Polymer Science.Polymer Physics》2019,57(12):731-737
In this study, we present nanodomes‐combined surface relief gratings (SRGs) of azopolymer films with controlled shapes and sizes. We investigate the effect of the polarization mode of light interference on leading nanodomes in the conventional SRG patterns. In addition, we also systematically study the relationship between Bragg distance of light interference and shapes of nanodomes. From this, we explain the anisotropic self‐assembled behavior nanodomes in photoaddressable azopolymer films regarding polarization modes as well as spatial confinement effect. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2019 , 57, 731–737 相似文献
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Jiu‐an Lv Weiru Wang Jixiang Xu Tomiki Ikeda Yanlei Yu 《Macromolecular rapid communications》2014,35(14):1266-1272
Cross‐linked azobenzene liquid‐crystalline polymer films with a poly(oxyethylene) backbone are synthesized by photoinitiated cationic copolymerization. Azobenzene moieties in the film surface toward the light source are simultaneously photoaligned during photopolymerization with unpolarized 436 nm light and thus form a splayed alignment in the whole film. The prepared films show reversible photoinduced bending behavior with opposite bending directions when different surfaces of one film face to ultraviolet light irradiation.
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Takahiro Seki 《Macromolecular rapid communications》2014,35(3):271-290
Photoresponsive azobenzene‐containing systems ranging from molecular to macroscopic material levels have greatly been increasing their significance in materials chemistry. This review focuses on the studies on light induced or triggered motions in azobenzene liquid crystalline (LC) polymer films at mesoscopic and microscopic levels. Due to the cooperative nature of liquid crystalline materials, highly efficient photoalignment and photo‐triggered migrating motions are realized in mostly repeated manners. Here, recent advances in surface‐grafted LC polymer brushes, LC block copolymer films, and LC polymer films that exhibit mass migrations are overviewed. Such newly emerged photoresponsive systems are expected to provide new possibilities and applications in polymer thin film technologies.