Acta Phys. -Chim. Sin. ›› 2008, Vol. 24 ›› Issue (09): 1535-1539.doi: 10.1016/S1872-1508(08)60062-5

• ARTICLE • Previous Articles     Next Articles

Effect of Solvent and Molecular Structure on the Enhanced Fluorescence and Supramolecular Chirality of Schiff Bases in Organogels

YU Wei, LI Yuan-Gang, WANG Tian-Yu, LIU Ming-Hua, LI Zhan-Shuang   

  1. School of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China; CAS Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
  • Received:2008-04-15 Revised:2008-05-19 Published:2008-09-10
  • Contact: WANG Tian-Yu; LIU Ming-Hua;

Abstract: The structures and properties of some Schiff base compounds doped in organogels were investigated. It was found that although individual Schiff bases could not form organogels with organic solvents, they can gel by mixing with an organogelator, N,N’-bisoctadecyl-L-Boc-glutamic-diamide, which formed transparent organogels in dimethyl sulfoxide (DMSO) or toluene (Tol). The enhancement of doping Schiff bases fluorescence in the organogel was observed in comparison with that of the corresponding solution. Furthermore, in the DMSO organogel, the induced chirality was obtained fromthe doping Schiff base with long alkyl chain. In contrast, the Schiff bases without long alkyl chain could not formsupramolecular chiral assemblies in organogel. It was suggested that through gel formation the chirality of the gelator could be transferred to the Schiff base through hydrophobic interaction among the long alkyl chains.

Key words: Organogel, Gelator, Fluorescence, Chirality, Doping, Schiff base