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- W4313887565 abstract "Abstract We report the electronic absorption spectroscopy of 7,7,8,8-tetracyanoquinodimethane (TCNQ) and its fluorinated derivatives (F2TCNQ and F4TCNQ), well-known electron-accepting molecules in common organic solvents (toluene, chlorobenzene, acetonitrile, and ethanol) under controlled exposure to air (O 2 ) and UV light. All compounds (F x TCNQ ( x = 0, 2, 4)) were stable in a neutral state (F x TCNQ 0 ) in toluene and chlorobenzene, even under both O 2 and UV light. On the other hand, in EtOH, the formation of F x TCNQ ·− was monitored upon controlled exposure to O 2 or UV light. Especially in air-equilibrated ethanol upon the UV-illumination, efficient α,α-dicyano- p -toluoylcyanide anion (DCTC − ) and its fluorinated derivatives were generated evinced by the absorption peak near 480 nm, whereas the reaction was shut off by removing O 2 or blocking UV light, thereby keeping F x TCNQ ·− stable. However, even in deaerated ethanol, upon the UV-illumination, the anion formation of TCNQ and its fluorinated derivatives (F x TCNQ ·− , x = 0, 2, 4) was inevitable, showing the stability of F x TCNQ 0 depends on the choice of solvent." @default.
- W4313887565 created "2023-01-10" @default.
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- W4313887565 date "2023-01-09" @default.
- W4313887565 modified "2023-09-30" @default.
- W4313887565 title "The role of molecular oxygen (O2) and UV light in the anion radical formation and stability of TCNQ and its fluorinated derivatives" @default.
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- W4313887565 doi "https://doi.org/10.1186/s40543-022-00364-z" @default.
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