Optical intensity-driven reversible photonic bandgaps in self-organized helical superstructures with handedness inversion

被引：48
|
作者：
Sun, Jian [1 ]
Yu, Li [2 ]
Wang, Ling [2 ]
Li, Chenyue [1 ]
Yang, Zhou [1 ]
He, Wanli [1 ]
Zhang, Cuihong [2 ]
Zhang, Lanying [2 ,3 ]
Xiao, Jiumei [4 ]
Yuan, Xiao [2 ]
Li, Fasheng [5 ]
Yang, Huai [1 ,2 ,3 ]
机构：
[1] Univ Sci & Technol Beijing, Dept Mat Sci & Engn, Beijing 100083, Peoples R China
[2] Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China
[3] Peking Univ, Minist Educ, Key Lab Polymer Chem & Phys, Beijing 100871, Peoples R China
[4] Univ Sci & Technol Beijing, Sch Math & Phys, Beijing 100083, Peoples R China
[5] Dalian Med Univ, Coll Med Lab, Dalian 116044, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY C | 2017年 / 5卷 / 15期
基金：
中国国家自然科学基金;
关键词：
CHOLESTERIC LIQUID-CRYSTALS; CHIRAL MOLECULAR SWITCHES; REFLECTIVE POLARIZERS; POLYMER NETWORKS; ROTARY MOTION; COLOR; FILMS;
D O I：
10.1039/c7tc00534b
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An optical intensity-driven self-organized helical superstructure was found to exhibit reversibly dynamic bandgap shifting, a wide bandgap and a hyper-reflection bandgap in one system. According to the UV-intensity dependence of the photo-isomerization ratio of chiral molecular motors, the specialized arrangement of helical pitch with chiral handedness inversion can be directly obtained along the direction of the helical axis upon ultraviolet exposure, which can be evidently observed in liquid-crystalline polymer composites.
引用
收藏
页码：3678 / 3683
页数：6
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