Photodynamic Chiral Molecular Switches with Thermal Stability: From Reflection Wavelength Tuning to Handedness Inversion of Self-Organized Helical Superstructures

被引：127
|
作者：
Li, Yannian [1 ,2 ]
Xue, Chenming [1 ,2 ]
Wang, Mengfei [1 ,2 ]
Urbas, Augustine [3 ]
Li, Quan [1 ,2 ]
机构：
[1] Kent State Univ, Inst Liquid Crystal, Kent, OH 44242 USA
[2] Kent State Univ, Chem Phys Interdisciplinary Program, Kent, OH 44242 USA
[3] Air Force Res Lab WPAFB, Mat & Mfg Directorate, Dayton, OH 45433 USA
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2013年 / 52卷 / 51期
关键词：
handedness inversion; helical structures; liquid crystals; self-organized helices; thermal stability; CHOLESTERIC LIQUID-CRYSTALS; CIRCULAR-DICHROISM SPECTROSCOPY; CONFORMATIONAL-ANALYSIS; BLUE REFLECTION; DYNAMIC CONTROL; TWISTING POWER; LIGHT; INDUCTION; COLOR; DIARYLETHENE;
D O I：
10.1002/anie.201306396
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A good turn: Three compounds that bear two axially chiral bridged binaphthyl units were developed as photodynamic chiral dopants for nematic liquid crystals. For compounds with suitable bridge lengths, a change in the dihedral angle induced a switch of the binaphthyl units from the cisoid to the transoid form upon UV irradiation, which led to an inversion of the handedness of the helices. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：13703 / 13707
页数：5
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