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- W2022032962 abstract "Tetracationic water-soluble porphyrin (H2P4+) has been immobilized by π−π stacking interactions onto the skeleton of carbon nanohorns (CNH), without disrupting their π-electronic network. The stable aqueous solution of the CNH−H2P4+ nanoensemble was examined by both electron microscopy and spectroscopic techniques. The efficient fluorescence quenching of the H2P4+ moiety in the CNH−H2P4+ nanoensemble was probed by steady-state as well as time-resolved fluorescence emission spectroscopy, suggesting charge separation from the photoexcited H2P4+ to CNH. In the presence of methyl viologen dication (MV2+) and a hole trap, accumulation of the reduced species of methyl viologen was observed by the photoillumination of CNH−H2P4+, suggesting that the electron migration from the initially formed charge-separated state takes place. Transient absorption spectroscopy gave further insights on the transient species such as the charge-separated state (CNH•-)−(H2P4+)•+, which was consumed in the presence of MV2+ and hole shifter, leaving the reduced methyl viologen." @default.
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- W2022032962 date "2006-09-29" @default.
- W2022032962 modified "2023-10-17" @default.
- W2022032962 title "Electronic Interplay on Illuminated Aqueous Carbon Nanohorn−Porphyrin Ensembles" @default.
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- W2022032962 doi "https://doi.org/10.1021/jp064685m" @default.
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