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• W2112743485 startingPage "7221" @default.
• W2112743485 abstract "Donor-acceptor distance, orientation, and photoexcitation wavelength are key factors in governing the efficiency and mechanism of electron-transfer reactions both in natural and synthetic systems. Although distance and orientation effects have been successfully demonstrated in simple donor-acceptor dyads, revealing excitation-wavelength-dependent photochemical properties demands multimodular, photosynthetic-reaction-center model compounds. Here, we successfully demonstrate donor- acceptor excitation-wavelength-dependent, ultrafast charge separation and charge recombination in newly synthesized, novel tetrads featuring bisferrocene, BF2 -chelated azadipyrromethene, and fullerene entities. The tetrads synthesized using multistep synthetic procedure revealed characteristic optical, redox, and photo reactivities of the individual components and featured closely and distantly positioned donor-acceptor systems. The near-IR-emitting BF2-chelated azadipyrromethene acted as a photosensitizing electron acceptor along with fullerene, while the ferrocene entities acted as electron donors. Both tetrads revealed excitation-wavelength-dependent, photoinduced, electron-transfer events as probed by femtosecond transient absorption spectroscopy. That is, formation of the Fc(+)-ADP-C60(.-) charge-separated state upon C60 excitation, and Fc(+)-ADP(.-)-C60 formation upon ADP excitation is demonstrated." @default.
• W2112743485 created "2016-06-24" @default.
• W2112743485 creator A5029103780 @default.
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• W2112743485 creator A5064037442 @default.
• W2112743485 creator A5066193981 @default.
• W2112743485 creator A5084268749 @default.
• W2112743485 date "2013-03-28" @default.
• W2112743485 modified "2023-09-23" @default.
• W2112743485 title "Excitation-Wavelength-Dependent, Ultrafast Photoinduced Electron Transfer in Bisferrocene/BF₂-Chelated-Azadipyrromethene/Fullerene Tetrads" @default.
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• W2112743485 doi "https://doi.org/10.1002/chem.201204317" @default.
• W2112743485 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/23554157" @default.
• W2112743485 hasPublicationYear "2013" @default.
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