Chiral Inductions on Supramolecular Self-Assembly and Super-Twisted Nematic Liquid Crystal Cells

  • 雲 緹

學生論文: Master's Thesis

摘要

Chirality is one of fundamental properties in nature it is essential to functioning and sophisticated in biological system Chiral cholesteryl 4-(carbonyloxy)-4-(hexyloxyl)benzoate (CCH*) was synthesized in this study Gelation characterization of pre-design organogelators oxalyl acid N' N'-di(4-(hexyloxy)benzoyl)-hydrazide (AG6) and oxalyl acid N' N'-di(4-(undecyloxy)benzoyl)-hydrazide (AG11) in various organic solvents was studied The microstructures and morphologies of the organogelators were investigated using SEM and TEM analysis Both achiral organogelators self-assembled into nano- or micro-scale superstructures in an appropriate organic solvents and resulting in the formation of highly ordered three-dimensional networks The results of the temperature-dependent 1H-NMR analysis of the organogelators revealed that van der Waals forces and π-π interactions acted as driving forces leading to self-assembly into three-dimensional networks The synthesized chiral CCH* does not show gelation in organic solvents To estimate the effect of CCH* on the induction of asymmetric construction CCH* was used as a chiral dopant on the self-assembly of gelators The results indicate that doping of CCH* into the achiral gel systems offered achiral environment inducing asymmetric constructions The chiral induction was further evidenced via CD spectra XRD SEM and TEM analysis To study the application of CCH* on liquid crystals CCH* was further added into commercially available nematic liquid crystal (HSG-222000) to form chiral nematic liquid crystal (N*LC) Cholesteric fingerprint textures of N*LC was observed using POM analysis A supper-twisted nematic liquid crystal (STNLC) cell was fabricated using the synthesized N*LC Electro-optical properties of the fabricated STNLC was investigated showing reversible ON and OFF states via electric field bias on the sample cells
獎項日期2017 二月 9
原文English
監督員Jui-Hsiang Liu (Supervisor)

引用此文

Chiral Inductions on Supramolecular Self-Assembly and Super-Twisted Nematic Liquid Crystal Cells
緹, 雲. (Author). 2017 二月 9

學生論文: Master's Thesis