English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 49378/84106 (59%)
造訪人次 : 7380260      線上人數 : 69
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/25296

    題名: Synthesis and properties of thermotropic liquid crystals bis[4-(5-alkyl-1, 3-dioxan-2-yl)phenyl]terephthalate
    作者: Yu, L. J.;Wu, J. M.
    貢獻者: 淡江大學化學學系
    關鍵詞: 2,5-disubstituted-1,3-dioxane
    日期: 1991-07
    上傳時間: 2009-12-01
    出版者: Philadelphia, PA: Taylor & Francis
    摘要: The homologues of bis[4-(5-alkyl-1,3-dioxan-2-yl)-phenyl]terephthalate were synthesized. Wide mesophase temperature ranges, nematic for butyl to dodecyl and smectic C for octyl to tetradecyl derivatives, were observed. The trans-cis isomerization of the heterocyclic rings and dissociations of the ester linkages after heating the sample to high temperatures were studied by NMR spectroscopy.
    關聯: Molecular crystals and liquid crystals 204(1), pp.37-42
    DOI: 10.1080/00268949108046592
    顯示於類別:[化學學系暨研究所] 期刊論文





    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋