Acta Phys. -Chim. Sin. ›› 2016, Vol. 32 ›› Issue (3): 771-779.doi: 10.3866/PKU.WHXB201601043

• ARTICLE • Previous Articles     Next Articles

Influence of Halogenated Benzene Solvents on the Photophysical Properties of Gallium Corroles: the External Heavy Atom Effect

Xuan ZHAN1,Fang ZHAO2,Lei ZHANG2,*(),Biao-Biao LÜ3,Su-Hong PENG1,Xiao YING3,Hui WANG2,*(),Hai-Yang LIU1,2,*()   

  1. 1 Department of Chemistry, South China University of Technology, Guangzhou 510641, P. R. China
    2 State Key Laboratory of Optoelectronics Materials and Technologies, Sun-Yat Sen University, Guangzhou 510275, P. R. China
    3 Department of Applied Physics, South China University of Technology, Guangzhou 510641, P. R. China
  • Received:2015-11-03 Published:2016-03-04
  • Contact: Lei ZHANG,Hui WANG,Hai-Yang LIU E-mail:zhlei28@mail.sysu.edu.cn;stswh@mail.sysu.edu.cn;chhyliu@scut.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(21171057, 21371059);National Key Basic Research Program of China((973)(2013CB922403));Open Fund of State Key Laboratory of Opto-Electronic Material and Technologies of SunYat-Sen University, China(OEMT-2015-KF-05)

Abstract:

The photophysical properties of pentafluorophenyl-substituted gallium corroles in halogenated benzenes were investigated using ultraviolet-visible (UV-Vis), steady-state, time-resolved fluorescence, and femtosecond transient absorption spectroscopies. The results showed that the absorption maximum wavelength of the gallium corroles was mainly related to the dispersion force of the halogenated benzene solvents. The external heavy atom effect of halogenated benzenes may markedly lower the fluorescence quantum yield of gallium corrole complexes. Photoinduced electron transfer between the gallium corroles and halogenated benzene solvents was detected by femtosecond transient absorption spectroscopy. The experimental evidence showed that the heavy atom effect of the solvent might lower the charge recombination rate of charge-separated gallium corrole-solvent complexes.

Key words: Corrole, Gallium, Halogenated benzene solvent, External heavy atom effect, Photophysical property

MSC2000: 

  • O641.06