高等学校化学学报

高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (8): 1068.

• 研究快报 • 上一篇    下一篇

β-环糊精和十六烷基三甲基溴化铵混合介质中对二甲氨基苯甲醛的分子内扭转电荷转移

江云宝, 胡劲松   

  1. 厦门大学化学系, 厦门 361005
  • 收稿日期:1993-02-06 出版日期:1993-08-24 发布日期:1993-08-24
  • 通讯作者: 江云宝.
  • 作者简介:第一作者:男, 30岁, 博士, 副教授.
  • 基金资助:

    福建省自然科学基金

Twisted Intramolecular Charge Transfer of DMABA in β-Cyclodextrin and Cetyltrimethylammonium Bromide Mixed Media

JIANG Yun-Bao, HU Jing-Song   

  1. Department of Chemistry, Xiamen University, Xiamen, 361003
  • Received:1993-02-06 Online:1993-08-24 Published:1993-08-24

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关键词: 分子内扭转电荷转移, 对二甲氨基苯甲醛, 环糊精-表面活性剂体系, 环糊精诱导簇集

Abstract: Twisted intramolecular charge transfer ( TICT ) of p-N, N-dimethy-laminobenzaldehyde (DMABA) in β-cyclodextrin (β-CD) and cetyltrimethylammonium bromide (CTMAB) mixed media is monitored by its typical dual fluorescence.The ratio of the intensity of TICTfluorescence band (a band) to that of normal band (b band) decreases with introducing CTMABat CTMABconcentration lower than β-CDin the solution, with the concomitant red shift of a band and the decrease of total fluorescence intensity,and the trends are opposite when CTMABconcentration is higher than β-CDconcentration.It is concluded that CTMABand /β-CDform a 1:1 inclusion complex and a premicellar aggregate of CTMABis present in CTMAB-β-CDmixed system at the concentration of CTMABhigher than that of β-CD,whose formation would be induced by β-CD.

Key words: TICT, DMABA.Cyclodextrin-surfactant system, Cyclodextrin induced aggregation

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