Ultrafast time-resolved laser spectroscopic studies of trans-bis(ferrocene-carboxylato)(tetraphenyl-porphyrinato)tin(IV):: Intramolecular electron-transfer dynamics

被引：0

作者：

Jang, Joon Hee ^{[1
]}

Kim, Hee Jung ^{[2
]}

Kim, Hee-Joon ^{[2
]}

Kim, Chul Hoon ^{[3
]}

Joo, Taiha ^{[3
]}

Cho, Dae Won ^{[4
]}

Yoon, Minjoong ^{[1
]}

机构：

[1] Chungnam Natl Univ, Dept Chem, Taejon 305764, South Korea

[2] Kumoh Natl Inst Technol, Dept Appl Chem, Gumi 730701, South Korea

[3] Pohang Univ Sci & Technol, Dept Chem, Pohang 790784, South Korea

[4] Chosun Univ, Dept Chem, Kwangju 501759, South Korea

来源：

BULLETIN OF THE KOREAN CHEMICAL SOCIETY | 2007年 / 28卷 / 11期

关键词：

ferrocene-Sn-porphyrin; photoinduced electron transfer; ultrafast laser spectroscopy;

D O I：

10.5012/bkcs.2007.28.11.1967

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Photophysical properties of a newly-synthesized porphyrin derivative, trans-bis(ferrocene carboxylato)-(5,10,15,20-tetraphenylporphyrinato)tin(IV) [Sn(TPP)(FcCOO)(2)] were investigated by means of steady-state and fs-time resolved laser spectroscopic techniques, and compared with those of a standard molecule, transdichloro(5,10,15,20-tetraphenyl-porphrinato)tin(IV) [Sn(TPP)Cl-2]. The fluorescence spectrum of Sn(TPP)(FcCOO)(2) was observed to exhibit dual emission bands originating from the S-2-state and the Si-state, which was greatly quenched as compared to those of Sn(TPP)Cl-2. The fs-time resolved fluorescence and transient absorption spectroscopic measurements revealed that the fluorescence quenching is due to formation of the long-lived charge transfer state by intramolecular electron transfer from ferrocene to the S-2-excited SnTPP in addition to the enhanced non-radiative deactivation processes.

引用

页码：1967 / 1972

页数：6

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