Control of the Induced Handedness of Helical Nanofilaments Employing Cholesteric Liquid Crystal Fields

Molecules

Jun-Sung Park¹  Suk-Won Choi¹  Jae-Jin Lee¹  Yong-Jun Choi¹  Ju-Yong Kim¹ 

[1] Department of Advanced Materials Engineering for Information & Electronics, and Integrated Education Institute for Frontier Science & Technology (BK21 Four), Kyung Hee University, Yongin 17104, Gyeonggi-do, Korea;

关键词: chirality;    bent-core molecules;    helical nanofilaments;    cholesteric liquid crystals;    chiral dopants;    circular dichroism;   

DOI  :  10.3390/molecules26196055

来源: DOAJ

【 摘 要 】

In this paper, a simple and powerful method to control the induced handedness of helical nanofilaments (HNFs) is presented. The nanofilaments are formed by achiral bent-core liquid crystal molecules employing a cholesteric liquid crystal field obtained by doping a rod-like nematogen with a chiral dopant. Homochiral helical nanofilaments are formed in the nanophase-separated helical nanofilament/cholesteric phase from a mixture with a cholesteric phase. This cholesteric phase forms at a temperature higher than the temperature at which the helical nanofilament in a bent-core molecule appears. Under such conditions, the cholesteric liquid crystal field acts as a driving force in the nucleation of HNFs, realizing a perfectly homochiral domain consisting of identical helical nanofilament handedness.

【 授权许可】

Unknown