中华医学超声杂志

应用化学 ›› 1994, Vol. 0 ›› Issue (2): 110-112.

• 研究论文 • 上一篇    下一篇

水溶性荧光高分子乙烯基咔唑－丙烯酸共聚物的合成及荧光测试

博·格日勒图1, 敖登高娃2   

  1. 1. 内蒙古师范大学化学系 呼和浩特 010022;
    2. 内蒙古大学化学系 呼和浩特
  • 收稿日期:1993-05-26 修回日期:1993-11-29 出版日期:1994-04-10 发布日期:1994-04-10
  • 基金资助:
    内蒙古自然科学基金资助项目

Prepartion of Water Soluble Copolymer of N-Vinyl-carbazole and Acrylic Acid and Its Fluorescence

B. Gereltu1, Odengaowa2   

  1. 1. Department of Chemistry, Inner Mongolia Normal University, Hohhot 010022;
    2. Department of Chemistry, Inner Mongolia University, Hohhot
  • Received:1993-05-26 Revised:1993-11-29 Published:1994-04-10 Online:1994-04-10

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摘要： 用偶氮二异丁腈作引发剂,使N-乙烯基咔唑和丙烯酸甲酯在苯中共聚合,该共聚物在四氢呋喃中用氢氧化钠水溶液水解,得到水溶性乙烯基咔唑-丙烯酸共聚物。该共聚物的水溶液在373nm处产生较强的荧光,其荧光强度随溶液pH值增大而增强,在该高分子水溶液中,加入少量阳离子表面活性剂,其量子产率可提高7倍,微量重金属离子(Hg2+)对荧光有一定的熄灭作用。荧光强度(logI0/I)与Hg2+的浓度呈线性关系。

关键词: 荧光, 乙烯基咔唑, 丙烯酸, 共聚物

Abstract: A linear copolymer of methyl acrylate and N-vinylcarbazole was prepared in benzene using AIBN as an initiator and then hydrolyzed in NaOH aqueous solution. The fluorescence intensities of the aqueous solution of the hydrolyzed water soluble copolymer increase with the increase of the pH value and the concentration of the cationic surfactant. Mercuryions(Hg2+)showed a certain quenching effect on the fluorescene of the copolymer aqueous solution. The concentration of Hg2+ is in a linear relationship with the fluorescence intensity (logI0/I)of the polymer solution, that may be used to determine the trace amount of mercury by fluorescence quenching method.

Key words: fluorescence, N-vinyl carbazole, acrylic acid, copolymer

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