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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/87411

    Title: 六苯并寇液晶材料的合成, 六炔苯基苯筒型液晶材料手性放大及引入高偶極對盤狀向列液晶原之影響
    Other Titles: Syntheses and chiral induction in columnar liquid crystalline phases of hexabenzocoronene, hexakis(phenylethynyl)benzene derivatives and the effect in discotic nematic liquid crystal by introducting large-dipole group
    Authors: 吳雅婷;Wu, Ya-Ting
    Contributors: 淡江大學化學學系碩士班
    徐秀福;Hsu, Hsiu-Fu
    Keywords: 六苯并寇;六炔苯基苯;盤狀液晶;筒型液晶;螺旋筒型;掌性放大;高偶極;hexabenzocoronene;hexakis(phenylethynyl)benzene;discotic;columnar liquid crystal;helical columnar;chiral amplification;high-dipole
    Date: 2012
    Issue Date: 2013-04-13 11:03:47 (UTC+8)
    Abstract: 本論文主要將兩種盤狀液晶之中心硬核:六苯并寇及六炔苯基苯,分別對其衍生物的合成、液晶性質進行探討。
    The aim of this thesis is to explore the synthesis and liquid crystal properties of hexabenzocoronene and hexakis(phenylethynyl)benzene.
    The first part includes the design and synthesis of hexa-peri-hexabenzocoronene-(HBC)-based derivatives. It was attempted to introduce cyclohexyl group in a C3 symmetry manneto increasee effective interdisc contact area for higher charge mobility intra-columnar.
    The second part discusses the chiral amplification effect by introducing various number of chiral side chains onto hexakis(phenylethynyl)benzene. The results by circular dichroism (CD) spectroscopy indicate a liner relationship between the number of chiral chains and the minimum chiral dopants are determined.
    The third part explores the influence on supra-structures by replacing a alkylphenyl with a a polar cyanophenyl or a cyanobiphenyl group onto the discotic nematogenic hexaynylphenylbenzene. The polar cyano group in either case induced the columnar molecular packing.
    Appears in Collections:[化學學系暨研究所] 學位論文

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