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化学学报
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化学学报 ›› 2009, Vol. 67 ›› Issue (11): 1243-1246. 上一篇    下一篇

研究论文

水溶液中P(AM-co-PEBA)聚合物对Tb3＋离子荧光增强作用

李振泉b 张玉玺a 曹绪龙b 宋新旺b 王胜蓝a
王尔鑑a 吴飞鹏*,a

  

  1. (a中国科学院理化技术研究所 北京 100190)
    (b中石化胜利油田分公司地质科学研究院 东营 257015)

  • 投稿日期:2008-07-15 修回日期:2009-02-12 发布日期:2009-06-14
  • 通讯作者: 吴飞鹏

Luminescence Enhancement of Tb3＋ Ion in Hydrophobically Associating P(AM-co-PEBA) Aqueous Solution

Li, Zhenquan b Zhang, Yuxi a Cao, Xulong b Song, Xinwang b
Wang, Shenglan a Wang, Erjian a Wu, Feipeng *,a
  

  1. (a Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190)
    (b Geological Scientific Research Institute of Shengli Oilfield Co.Ltd, SINOPEC, Dongying 257015)
  • Received:2008-07-15 Revised:2009-02-12 Published:2009-06-14

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被引次数

1

考察了Tb3＋离子在模板法合成的疏水缔合水溶性聚合物聚丙烯酰胺/4-(ω-丙烯酰氧乙氧基)苯甲酸(P(AM-co-PEBA))溶液中的荧光增强行为. 在溶液中P(AM-co-PEBA)通过羧基的络合作用及疏水缔合作用, 改变了 Tb3＋离子所处微环境, 降低了Tb3＋离子络合水的个数, 提高了Tb3＋离子荧光强度. 聚合物中PEBA含量增加或PEBA以微嵌段结构存在, 这一微环境效应得到增强. 另一方面, 聚合物P(AM-co-PEBA)分子内具有紫外光捕获基团, 可通过“天线效应”与Tb3＋离子进行能量传递, 进一步提高了Tb3＋离子的荧光强度.

关键词: 模板聚合, 疏水缔合, Tb3＋离子, 荧光增强

The fluorescence enhancement of Tb3＋ ion in the aqueous solution of acrylamide (AM) and 4-(ω-propenoyloxyethoxy)benzoic acid (PEBA) copolymers synthesized by a template copolymerization process was investigated. The complex of the carboxyl and the hydrophobic association changed the micro-environment of Tb3＋ ion, reduced the number of coordinated water molecules to Tb3＋ ion, so the fluorescence of Tb3＋ ion was enhanced. The content of PEBA was increased or the PEBA in the copolymer existed as micro-blocks, and the micro-environment effect was enhanced. Moreover the copolymer could transfer energy from the light-harvesting phenyl subunit to the Tb3＋ ion, which prominently enhanced the fluorescence intensity of Tb3＋ ion (antenna effect).

Key words: template polymerization, hydrophobic association, Tb3＋ ion, fluorescence enhancement