Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (8): 1651.

• Articles • Previous Articles     Next Articles

Synthesis and Gelation Behavior of a Fluorescent Active Low-Molecular Mass Organic Gelator Based on Cholesterol

YAN Ni, YANG Mei-Ni, LIU Kai-Qiang, FANG Yu*   

  1. Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Materials Science, Shaanxi Normal University, Xi′an 710062, China
  • Received:2009-03-30 Online:2009-08-10 Published:2009-08-10
  • Contact: FANG Yu. E-mail: yfang@snnu.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 20674048, 20773083)资助.

Abstract:

A new 7-nitrobenzo-2-oxa-1,3-diazol-4-yl-appended cholesterol derivative(NBD-C) was synthesized and characterized, and its gelation ability was evaluated in 30 solvents. It was found that NBD-C is an efficient gelator of acetonitrile, and the gel system possesses very smart thixotropic property. Scanning electron microscopy(SEM) observation showed that the gelator aggregated into different supramolecular structures in different solvents. FTIR, 1H NMR and fluorescence spectroscopy studies revealed that in addition to the van der Waals interaction between the cholesterol units of the gelator molecules, intermolecular hydrogen-bonding also plays crucial rule for the spontaneous formation of the gel networks.

Key words: Supramolecular gel; Fluorescent gelator; Cholesterol; Thixotropic property

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