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    題名: Gearing of Molecular Swirls: Columnar Packing of Nematogenic Hexakis(4-alkoxyphenylethynyl)benzene Derivatives
    作者: Lee, Shern-long;Lin, Hsing-an;Lin, Yi-hui;Chen, Hsiu-hui;Liao, Ching-ting;Lin, Tzu-ling;Chu, Yi-chen;Hsu, Hsiu-fu;Chen, Chun-hsien;Lee, Jey-jau;Hung, Wen-yi;Liu, Qu-yuan;Wu, Chunhung
    貢獻者: 淡江大學化學學系
    關鍵詞: columnar suprastructures;helical structures;liquid crystals;molecular swirls;scanning tunnelling microscopy
    日期: 2011-01-17
    上傳時間: 2012-06-14 09:06:56 (UTC+8)
    出版者: Weinheim: Wiley - V C H Verlag GmbH & Co. KGaA
    摘要: Through molecular design and straightforward synthesis, incorporating an additional alkoxy chain onto various numbers of peripheral phenyls in nematogenic hexakis(4-alkoxyphenylethynyl)benzene was achieved to generate columnar phases with significantly expanded temperature ranges. For the compound with two decyloxy chains on every peripheral phenyl, scanning tunnelling microscopic studies indicate the molecule adopts a preferred molecular-swirl geometry by restricting the conformational arrangement of the alkoxy side chains. Cooperative packing of the molecular swirls by a lock-in mechanism among columns results in a stable helical column packing evidenced by powder X-ray diffraction.
    關聯: Chemistry-A European Journal 17(3), pp.792-799
    DOI: 10.1002/chem.201002975
    顯示於類別:[化學學系暨研究所] 期刊論文

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