Influence of a Change in Helical Twisting Power of Photoresponsive Chiral Dopants on Rotational Manipulation of Micro??Objects on the Surface of Chiral Nematic …

…, Y Yoshida, T Akasaka, N Tamaoki

Index: Thomas, Reji; Yoshida, Yohei; Akasaka, Takehito; Tamaoki, Nobuyuki Chemistry - A European Journal, 2012 , vol. 18, # 39 p. 12337 - 12348

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Citation Number: 28

Abstract

Abstract Herein we report a group of five planar chiral molecules as photon-mode chiral switches for the reversible control of the self-assembled superstructures of doped chiral nematic liquid crystals. The chiral switches are composed of an asymmetrically substituted aromatic moiety and a photoisomerizing azobenzene unit connected in a cyclic manner through methylene spacers of varying lengths. All the molecules show conformational ...