Influence of Mesogenic Properties of Cruciform-Shaped Liquid Crystals by Incorporating Side-Arms with a Laterally-Substituted-Fluorine
學年 101
學期 2
出版（發表）日期 2013-05-30
作品名稱 Influence of Mesogenic Properties of Cruciform-Shaped Liquid Crystals by Incorporating Side-Arms with a Laterally-Substituted-Fluorine
作品名稱（其他語言）
著者 Lin, Yi-Hui; Yamuna Ezhumalai; Yang, Yu-Ling; Liao, Ching-Ting; Hsu, Hsiu-Fu; Wu, Chunhung
單位 淡江大學化學學系
出版者 Basel: M D P I AG
著錄名稱、卷期、頁數 Crystals 3(2), pp.339-349
摘要 Fluoro substitution in thermotropic liquid crystals provides a general way of modifying the properties of a parent system. Transition temperatures, mesophase types and other physical properties can be affected by fluoro substitution, so that frequently the behaviors of the parent compound can be manipulated and improved in a predictable manner. This paper discusses the effects of a fluoro substitution in each side-arm of 1,2,4,5-tetrakis((4-(alkoxy)phenyl)ethynyl)benzenes on the resulting mesomorphic properties characterized by optical polarizing microscopy and differential scanning calorimetry. Without any fluoro-substituted side-arms, longer chain-length leads to a wider nematic temperature range on cooling. Incorporation of a fluoro substitution in each side-arm induces the formation of a lamellar suprastructure, lowers transition temperatures and results in a wider mesophase temperature range on cooling.
關鍵字
語言 en_US
ISSN 2073-4352
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Hsu, Hsiu-Fu
審稿制度 是
國別 CHE
公開徵稿
出版型式 ,電子版
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