Organoplatinum(II) complexes with chromophore-acceptor dyad studied by ultrafast time-resolved absorption spectroscopy

Siu Wai Lai; Yong Chen; Wai Ming Kwok; Xi Juan Zhao; Wai Pong To; Wen Fu Fu; Chi Ming Che

doi:10.1002/asia.200900304

Organoplatinum(II) complexes with chromophore-acceptor dyad studied by ultrafast time-resolved absorption spectroscopy

Siu Wai Lai, Yong Chen, Wai Ming Kwok, Xi Juan Zhao, Wai Pong To, Wen Fu Fu, Chi Ming Che

Research output: Journal article publication › Journal article › Academic research › peer-review

12 Citations (Scopus)

Abstract

The photoinduced ET reaction from PtIIchromophore to viologen acceptor in a new ultrafast time-resolved absorption spectroscopy has been reported. Photoinduced electron-transfer (ET) reactions are fundamental steps in photosynthesis, and which have led to extensive investigations into charge-separated species in artificial mimics. The development of the absorption maxima at 395 and 605 nm could be attributed to the formation of methyl viologen radical cation as a result of oxidative decomposition of TEOA. The back ET reaction rate constants of the two platinum (II) systems are slower than the forward electron-transfer reactions, despite the large driving force. Efforts to harness the slow back ET reactions of PtIIchromophore acceptor systems for light-induced multi-electron-transfer catalysis are in progress.

Original language	English
Pages (from-to)	60-65
Number of pages	6
Journal	Chemistry - An Asian Journal
Volume	5
Issue number	1
DOIs	https://doi.org/10.1002/asia.200900304
Publication status	Published - 4 Jan 2010

Keywords

Chromophores
Electron transfer
Hydrogen
Platinum
Viologen

ASJC Scopus subject areas

Chemistry(all)

More information

10.1002/asia.200900304

Cite this

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title = "Organoplatinum(II) complexes with chromophore-acceptor dyad studied by ultrafast time-resolved absorption spectroscopy",

abstract = "The photoinduced ET reaction from PtIIchromophore to viologen acceptor in a new ultrafast time-resolved absorption spectroscopy has been reported. Photoinduced electron-transfer (ET) reactions are fundamental steps in photosynthesis, and which have led to extensive investigations into charge-separated species in artificial mimics. The development of the absorption maxima at 395 and 605 nm could be attributed to the formation of methyl viologen radical cation as a result of oxidative decomposition of TEOA. The back ET reaction rate constants of the two platinum (II) systems are slower than the forward electron-transfer reactions, despite the large driving force. Efforts to harness the slow back ET reactions of PtIIchromophore acceptor systems for light-induced multi-electron-transfer catalysis are in progress.",

keywords = "Chromophores, Electron transfer, Hydrogen, Platinum, Viologen",

author = "Lai, {Siu Wai} and Yong Chen and Kwok, {Wai Ming} and Zhao, {Xi Juan} and To, {Wai Pong} and Fu, {Wen Fu} and Che, {Chi Ming}",

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AU - Lai, Siu Wai

AU - Chen, Yong

AU - Kwok, Wai Ming

AU - Zhao, Xi Juan

AU - To, Wai Pong

AU - Fu, Wen Fu

AU - Che, Chi Ming

PY - 2010/1/4

Y1 - 2010/1/4

N2 - The photoinduced ET reaction from PtIIchromophore to viologen acceptor in a new ultrafast time-resolved absorption spectroscopy has been reported. Photoinduced electron-transfer (ET) reactions are fundamental steps in photosynthesis, and which have led to extensive investigations into charge-separated species in artificial mimics. The development of the absorption maxima at 395 and 605 nm could be attributed to the formation of methyl viologen radical cation as a result of oxidative decomposition of TEOA. The back ET reaction rate constants of the two platinum (II) systems are slower than the forward electron-transfer reactions, despite the large driving force. Efforts to harness the slow back ET reactions of PtIIchromophore acceptor systems for light-induced multi-electron-transfer catalysis are in progress.

AB - The photoinduced ET reaction from PtIIchromophore to viologen acceptor in a new ultrafast time-resolved absorption spectroscopy has been reported. Photoinduced electron-transfer (ET) reactions are fundamental steps in photosynthesis, and which have led to extensive investigations into charge-separated species in artificial mimics. The development of the absorption maxima at 395 and 605 nm could be attributed to the formation of methyl viologen radical cation as a result of oxidative decomposition of TEOA. The back ET reaction rate constants of the two platinum (II) systems are slower than the forward electron-transfer reactions, despite the large driving force. Efforts to harness the slow back ET reactions of PtIIchromophore acceptor systems for light-induced multi-electron-transfer catalysis are in progress.

KW - Chromophores

KW - Electron transfer

KW - Hydrogen

KW - Platinum

KW - Viologen

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DO - 10.1002/asia.200900304

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JF - Chemistry - An Asian Journal

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Organoplatinum(II) complexes with chromophore-acceptor dyad studied by ultrafast time-resolved absorption spectroscopy

Abstract

Keywords

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