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- W2023962859 abstract "Artificial photosynthesis is one of the chemists’ dreams and the separation of charges with long lives is fundamental for achieving artificial photosynthesis. In actual photosynthesis, Z-scheme excitation separates electronic charge with high efficiency using solar light. Here we report that photo-excitation in Cr-tetraphenylporphyrin chroride (Cr-TPPCl)/Zr doped KTaO3 (KTa(Zr)O3) is analogous to the Z-scheme in photosynthesis, and that we achieve complete charge separation at room temperature. Photovoltaic decay and transient fluorescence spectra measurements showed that the photo-excited charge in KTa(Zr)O3 transferred to the HOMO of Cr-TPPCl within a few hundred pico-seconds on charge transfer. In contrast, the reduced state of the Cr-TPPCl species that was formed by the electronic injection from KTa(Zr)O3 was observed for more than 0.5 s at room temperature in the transient decay of the absorption spectra change after the initial excitation of KTa(Zr)O3. The formed reduced state of Cr-TPPCl was highly stable and was detected by static ESR measurements." @default.
- W2023962859 created "2016-06-24" @default.
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- W2023962859 date "2011-01-01" @default.
- W2023962859 modified "2023-09-24" @default.
- W2023962859 title "Long-time charge separation in porphyrin/KTa(Zr)O3 as water splitting photocatalyst" @default.
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- W2023962859 doi "https://doi.org/10.1039/c1cp22425e" @default.
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