Modulation of internal conversion rate and nonlinear absorption in meso -tetraphenylporphyrins by donor/acceptor substitutes

Guanghong Ao,Xuemin Qian,Zhengguo Xiao,Zhongguo Li,Zhongquan Nie,Yuxiao Wang,Xueru Zhang,Yinglin Song

Optical Materials（2015）

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摘要

•Three porphyrins (TPP, TPP(CN)4 and TPP(OMe)4) are synthesized.•Nonlinear absorption properties are studied by Z-scan and pump–probe techniques.•TPP(OMe)4 reveals a transition from saturable to reverse saturable absorption.•TPP(OMe)4 shows quite accelerated S1 state and ISC lifetimes as compared to TPP.

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关键词

Meso-tetraphenylporphyrin,Z-scan,Pump-probe,Nonlinear absorption,Excited-state dynamic

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