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Molecular Engineering

, Volume 3, Issue 4, pp 293–299 | Cite as

Molecular assemblies of diazafluorenone Schiff-base amphiphiles. II. The vesicle and its molecular aggregation behavior

  • Zihou Tai
  • Xiangping Qian
  • Juan Zou
  • Shoujun Xiao
  • Fusheng Zhang
Article

Abstract

The self-assembling properties of a series of single-chain (C12–C18) amphiphilic ligands, diazafluorenone Schiff bases (DAFSB), were studied in dilute aqueous solutions by various physical methods. Transmission electron microscopy (TEM) shows that these amphiphiles can form vesicles with diameters of 50–250 nm and layer widths of about 5 nm. UV-vis spectra reflect the formation of J-like aggregates in bilayer assemblies. The gel to liquid-crystal phase-transition behavior of the bilayer in vesicles was investigated by differential scanning calorimetry (DSC), and the phase transition temperature,Tm, ranged between 60 and 75 °C. The experimental results indicate that DAFSB is a new type of bilayer-forming agent and provides a good model system for studying the interactions between metal ions and amphiphiles.

Key words

Diazafluorenone Schiff-base amphiphile bilayer-forming agent vesicle molecular aggregation 

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Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • Zihou Tai
    • 1
  • Xiangping Qian
    • 1
  • Juan Zou
    • 1
  • Shoujun Xiao
    • 2
  • Fusheng Zhang
    • 3
  1. 1.State Key Laboratory of Coordination ChemistryNanjing UniversityNanjingP.R. China
  2. 2.Chien-Shiung Wu Laboratory (Molecular and Biomolecular Electronics Laboratory)Southeast UniversityNanjingP. R. China
  3. 3.Center of Material AnalysisNanjing UniversityNanjingP. R. China

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