Acta Phys. -Chim. Sin. ›› 1999, Vol. 15 ›› Issue (10): 911-917.doi: 10.3866/PKU.WHXB19991010

• ARTICLE • Previous Articles     Next Articles

A Study on Photophysical Behavior of 1,3-diphenyl-5-(2)-pyrenyl-2-pyrazoline

Zhang Lian-Qi, Zhang Bao-Wen, Cao Yi   

  1. Laboratory of Photochemistry,Institute of Photographic Chemistry,The Chinese Academy of Sciences,Beijing 100101,China
  • Received:1998-12-14 Revised:1999-04-02 Published:1999-10-15
  • Contact: Zhang Bao-Wen

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Abstract:

In this work, the compound 1,3-diphenyl-5-(1-pyrenyl)-2-pyrazoline (DPPP) has been synthesized. A bulky 5-aryl substituent in this compound makes the molecule non coplanar and having significant changes in photophysics. The investigation of its photophysical properties indicated that intermolecular charge transfer complex between DPPP molecule forms, easily even if the concentration is very low (1.08×10 -5 mol•L -1 ).Its fluorescence spectrum shows distinct solvent, concentration and temperature effects. Under different experimental conditions, the fluorescence may emit from pyrenyl monomer, intramolecular charge transfer complex (Intra-CT) and intermolecular charge transfer complex (Inter-CT).

Key words: Pyrenyl, Pyrazoline, Intramolecular charge transfer complex, Intermolecular charge transfer complex