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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 28, Number 11
BKCSDE 28(11)
November 20, 2007

Title	Ultrafast Time-Resolved Laser Spectroscopic Studies of trans-Bis(ferrocene-carboxylato)(tetraphenyl-porphyrinato)tin(IV): Intramolecular Electron-Transfer Dynamics
Author	Joon Hee Jang, Hee Jung Kim, Hee-Joon Kim, Chul Hoon Kim, Taiha Joo, Dae Won Cho, Minjoong Yoon*
Keywords	Ferrocene-Sn-porphyrin, Photoinduced electron transfer, Ultrafast laser spectroscopy
Abstract	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, trans-dichloro( 5,10,15,20-tetraphenyl-porphrinato)tin(IV) [Sn(TPP)Cl₂]. The fluorescence spectrum of Sn(TPP)- (FcCOO)₂ was observed to exhibit dual emission bands originating from the S₂-state and the S₁-state, which was greatly quenched as compared to those of Sn(TPP)Cl₂. 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 S2-excited SnTPP in addition to the enhanced non-radiative deactivation processes.
Page	1967 - 1972
Full Text	PDF

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