化学学报 ›› 1998, Vol. 56 ›› Issue (1): 37-40. 上一篇    下一篇

研究论文

分子内扭转电荷转移的新荧光探针的研究

韦寿连;卢建忠;江云宝;许金钩   

  1. 国家教委材料和生命过程分析科学开放研究实;厦门大学化学系
  • 发布日期:1998-01-15

Study of novel fluorescent probes using twisted intramolecular charge tansfer

WEI SHOULIAN;LU JIANZHONG;JIANG YUNBAO;XU JINGOU   

  • Published:1998-01-15

选用对二乙氨基苯甲酸钠(SDEAB)和对二甲氨基苯甲酸钠(SDMAB)作为分子内扭转电荷转移(TICT)荧光探针, 表征了甲基修饰化所引起的β-CD空腔微环境的变化, 得出环糊精的非极性空腔有利于对二烷氨基苯甲酸型分子的TICT态形成的结论。以甲醇的测定为例, 展示了分子内扭转电荷转移作为荧光探针的分析应用。

关键词: 甲醇, 环糊精, 电荷转移, 国家教委博士后专项基金, 二乙氨基苯甲酸钠, 二甲氨基苯甲酸钠

The change in cave micro-invironment of β-cyclodextrin (β-CD) caused by methylation was investigated by using the twisted intramolecular charge transfer (TICT) of sodium diethylaminobenzoate (SDEAB) and sodium dimethylaminobenzoate (SDMAB) as fluorescent probes. The results indicte that the nonpolar β-CD cavity favors the formation of the TICT state of dialkylaminobenzoic acid-type molecules. It was demonstrated that the TICT fluorescence of SDEAB (or SDMAB)-β-MCD (methylated β-cyclodextrin) system could be used to detect methanol in aqueous solution.

Key words: METHANOL, CYCLODEXTRIN, CHARGE TRANSFER

中图分类号: