Synthesis and mesomorphic evaluation of new calamitic liquid crystals containing benzothiazole core

作     者：Teck Ming Koh Sie Tiong Ha Teck Leong Lee Siew Ling Lee Guan Yeow Yeap Hong Cheu Lin Ramesh T.Subramaniam 

作者机构：Department of ScienceFaculty of Engineering & ScienceUniversiti Tunku Abdul RahmanJln Genting KlangSetapak53300 Kuala Lumpur.Malaysia Department of ChemistryNational University of SingaporeSingapore 117543Singapore Department of Chemical ScienceFaculty of ScienceUniversiti Tunku Abdul RahmanJln UniversitiBandar Barat31900 KamparPerakMalaysia Ibnu Sina Institute for Fundamental Science StudiesUniversiti Teknologi Malaysia81310 UTM SkudaiJohorMalaysia Liquid Crystal Research LaboratorySchool of Chemical SciencesUniversiti Sains Malaysia11800 MindenPenangMalaysia Department of Materials Science & EngineeringNational Chiao Tung UniversityHsinchu 300Taiwan Center for Ionics University Malaya Department of PhysicsFaculty of ScienceUniversity of Malaya50603 Kuala LumpurMalaysia 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2011年第22卷第5期

页      面：619-622页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：Universiti Tunku Abdul Rahman(UTAR) for the UTAR Research Fund (No.6200/H02) the Malaysia Toray Science Foundation(No.4359/000) for funding this project 

主　　题：Benzothiazole Alkoxy chain Nematic Smectic A Liquid crystal 

摘      要：The design and synthesis of new calamitic benzothiazole-based liquid crystals,2-[4-（4-alkyloxybenzoyloxy）-phenyl]ben-zothiazoles are *** target compound was characterized using spectroscopic techniques,such as FT-IR,NMR（~1H and ^（13）C）,microanalysis and *** liquid crystalline behaviours of these compounds were thoroughly examined by differential scanning calorimetry and polarizing optical microscope *** materials exhibited enantiotropic nematic phase with high thermal stability（168℃）.Smectic A phase starts to emerge as monotropic（metastable） phase from C10 member and changes into enantiotropic（stable） phase from C12 and persists up to C16 members.