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    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/17235

    Title: Preparation and Characterization of Substituted 3-Benzothiazol-2-ylcoumarins
    Authors: Richard Y. Chao;趙永賀;Mei-Fang Ding;丁美方;Jhao-Yu Chen;陳昭宇;Chuan-Chen Lee;李傳珍;Shaw-Tao Lin;林孝道
    Contributors: ä¿å¥ç‡Ÿé¤Šç”ŸæŠ€å­¸ç³»
    Keywords: "Benzothiazolylcoumarins;UV-visible absorption;Fluorescence;Hydrogen bond;Stokes shift;Quinine sulfate."
    Date: 2010-02
    Issue Date: 2012-11-26 10:30:21 (UTC+8)
    Abstract: A series of substituted 3-benzothiazolylcoumarins was prepared from condensation of 2-hydroxybenzaldehyde and 2-cyanomethylbenzothiazole to investigate the effect of the nature and position of substituents on their absorption and fluorescent behavior. Compounds with a substituent containing a heteroatom which attached at the C6 position showed a split broad absorption band. Solutions of these compounds in various solvents exhibited brilliant blue fluorescence. The emission intensity for compounds
    with an alkoxy group at the C6 or C7 position in DMF was approximately 7- and 15-fold higher than for
    the corresponding precursor and quinine sulfate solution, respectively. These compounds also exhibit
    high thermal stability in solid state.
    Appears in Collections:[食品營養與保健生技學系] 期刊論文

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