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- W3196839270 abstract "Abstract A series of piperidine‐naphthalene monoimide, donor−acceptor (D−A) chromophores and their thionated derivatives were prepared. The physical properties of the chromophores were studied by spectroscopic and electrochemical measurements and DFT calculations. Relative to their non‐thionated counterparts, the thionated D−A chromophores display enhanced visible‐light absorption and 1 O 2 ‐sensitization quantum yields and negligible fluorescence, suggesting facile triplet formation of this class of molecules. This behavior originates from the significant n‐π* character in the singlet excited state, resulting in large spin‐orbit coupling between the singlet/triplet manifolds regardless of the degree of D/A interactions. With the electrochemically active D/A moieties and high triplet energy, the thionated chromophores can be used as amphoteric photosensitizers to catalyze reductive and oxidative photoreactions with efficiency comparable to Ru(bpy) 3 2+ as the sensitizer. Our results demonstrate that thiocarbonylation can be utilized in amide/imide‐containing D−A chromophores to provide a wide range of heavy‐atom‐free redox‐active photosensitizers." @default.
- W3196839270 created "2021-09-13" @default.
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- W3196839270 date "2021-09-01" @default.
- W3196839270 modified "2023-09-30" @default.
- W3196839270 title "Triplet‐Forming Thionated Donor‐Acceptor Chromophores for Electrochemically Amphoteric Photosensitization" @default.
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- W3196839270 doi "https://doi.org/10.1002/ejoc.202100793" @default.
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