应用化学 ›› 2010, Vol. 27 ›› Issue (10): 1199-1203.DOI: 10.3724/SP.J.1095.2010.90682

• 研究论文 • 上一篇    下一篇

偶氮苯双亲化合物在环己烷中的组装与光谱

庞树峰*,黄瑞甫,吕席卷   

  1. (北京理工大学物理化学研究所,北京理工大学理学院 北京 100081)
  • 收稿日期:2009-10-15 修回日期:2010-05-17 出版日期:2010-10-10 发布日期:2010-10-10
  • 通讯作者: 庞树峰,女,副教授; E-mail:sfpang@bit.edu.cn; 研究方向:胶体与界面化学,纳米材料
  • 基金资助:
    国家自然科学基金青年基金(20603002)资助项目

Assembling and Spectroscopy of Amphiphile Azobenzene Derivatives in Cyclohexane

PANG Shu-Feng*, HUANG Rui-Fu, LV Xi-Juan   

  1. (Institute for Chemical Physics,School of Science,Beijing Institute of Technology,Beijing 100081)
  • Received:2009-10-15 Revised:2010-05-17 Published:2010-10-10 Online:2010-10-10

摘要:

设计合成了4种含有不同取代基团的偶氮苯(Azobenzene,AZO)双亲化合物,研究了它们在环己烷中的聚集行为,用透射电子显微镜观察了它们的微观形貌。 结果发现,取代基不同的偶氮苯化合物在环己烷中分别组装得到球状、棒状和管状聚集体。 紫外光谱测试表明,这些聚集体在350 nm附近有1个最大吸收峰,取代基对其没有明显影响。 4种化合物在环己烷中均出现了波长为625 nm的荧光发射峰,这是由于化合物发生聚集所引起的。 考虑到分子的结构特征及其组装环境,初步断定,在环己烷中聚集行貌的差异主要来源于取代基之间和疏水尾链之间的协同作用。

关键词: 分子聚集体, 偶氮苯, 透射电子显微镜, 光谱

Abstract:

A series of amphiphilic azobenzene derivatives were synthesized(including CH3-Azo, COOH-Azo, CH3O-Azo and SO3H-Azo) and their aggregation behaviors were studied in cyclohexane. Transition electron microscope(TEM) observations revealed that hollow spherical, rod-like and tubular aggregations of CH3O-Azo, COOH-Azo and SO3H-Azo, respectively, could be formed in the solvent. All four substituted azobenzenes show similar absorption bands around 350 nm in UV-Vis spectra and emit the same 625 nm fluorescence despite of the different natures of the four substitutes. The later might be ascribed to their aggregation behaviors. It is believed that the synergetic effect between the substitutes and hydrophobic chains among the supramolecular interactions in cyclohexane causes their morphological variations.

Key words: Aggregation, Azobenzene, TEM, spectra

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