Acta Phys. -Chim. Sin. ›› 1985, Vol. 1 ›› Issue (03): 265-269.doi: 10.3866/PKU.WHXB19850311

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EVALUATION OF FLUORESCENCE LIFETIME OF ZINC PHTHALOCYANINES BY NON-TRANSIENT EXPERIMENTS

Shen Tao; Yuan Zhenli; Xu Huijun   

  1. Institute of Photographic Chemistry; Academia Sinica
  • Received:1984-11-21 Revised:1985-02-16 Published:1985-06-15

Abstract: A series of zinc phthalocyanines was synthesized. Their redox potentials, E_(ox) and E_R were measured by means of cyclic voltammetry. Their kinetic datum, κ_qτ of fluorescence quenching by typical electron acceptor was determined. The theoretical relation of the fluorescence quenching rate constant, κ_q vs. the electron transfer free enthalpy change, △G was calculated from redox potential and spectral datum, and κ_q was calculated from the theoretical relation between κ_q and △G. By substituting κ_q into κ_qτ, the lifetime of dye's fluorescence can be evaluated by non-transient experiments and simple calculations. In comparing with data in literature, the average fluorescence lifetime of the dye obtained is receivable.