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- W2941053669 abstract "Abstract Photocatalytic polymers offer an alternative to prevailing organometallics and nanomaterials, and they may benefit from polymer-mediated catalytic and material enhancements. MPC-1 , a polymer photoredox catalyst reported herein, exhibits enhanced catalytic activity arising from charge transfer states (CTSs) between its two chromophores. Oligomeric and polymeric MPC-1 preparations both promote efficient hydrodehalogenation of α -halocarbonyl compounds while exhibiting different solubility properties. The polymer is readily recovered by filtration. MPC-1 -coated vessels enable batch and flow photocatalysis, even with opaque reaction mixtures, via “backside irradiation.” Ultrafast transient absorption spectroscopy indicates a fast charge-transfer process within 20 ps of photoexcitation. Time-resolved photoluminescence measurements reveal an approximate 10 ns lifetime for bright valence states. Ultrafast measurements suggest a long CTS lifetime. Empirical catalytic activities of small-molecule models of MPC-1 subunits support the CTS hypothesis. Density functional theory (DFT) and time-dependent DFT calculations are in good agreement with experimental spectra, spectral peak assignment, and proposed underlying energetics." @default.
- W2941053669 created "2019-05-03" @default.
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- W2941053669 date "2019-04-23" @default.
- W2941053669 modified "2023-09-26" @default.
- W2941053669 title "Organopolymer with dual chromophores and fast charge-transfer properties for sustainable photocatalysis" @default.
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- W2941053669 doi "https://doi.org/10.1038/s41467-019-09316-5" @default.
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