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- W4200216296 abstract "• The redox potential of dichloroP(V)tetrakis(4-chlorophenyl)porphyrin is lower than similar P(V)porphyrins. • The photoexcited state of bis(6-quinolinoxy)P(V)tetrakis(4-chlorophenyl)porphyrin is quenched through intramolecular electron transfer. • This electron transfer-mediated quenching is effectvely suppressed by the protonation of the quinoline moiety. • The activity of singlet oxygen generation photosensitized by this porphyrin is compltely switched by pH. • Photosensitized protein oxidation by this porphyrin is enhanced unde an acidic condition. Strong photooxidative activity of dichloroP(V)tetrakis(4-chlorophenyl)porphyrin via electron transfer was expected. To control the activity of this P(V)porphyrin, bis(6-quinolinoxy)P(V)tetrakis(4-chlorophenyl)porphyrin (QuinP(V)TClPP), was synthesized. The p K a of a protonated quinoline moiety, the electron donor, was estimated to be 4.6. The singlet excited state of QuinP(V)TClPP was quenched via intramolecular electron transfer under neutral condition. Under an acidic condition, the fluorescence intensity and the singlet oxygen ( 1 O 2 ) generation yield by photoexcited QuinP(V)TClPP were significantly increased through protonation of the quinoline moiety. The photosensitized damage of human serum albumin by QuinP(V)TClPP through 1 O 2 generation and electron transfer mechanisms was effectively enhanced under an acidic condition." @default.
- W4200216296 created "2021-12-31" @default.
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- W4200216296 date "2022-02-01" @default.
- W4200216296 modified "2023-09-24" @default.
- W4200216296 title "Activity control of pH-responsive photosensitizer bis(6-quinolinoxy)P(V)tetrakis(4-chlorophenyl)porphyrin through intramolecular electron transfer" @default.
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- W4200216296 doi "https://doi.org/10.1016/j.cplett.2021.139285" @default.
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