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- W2101754503 abstract "Abstract The present study quantitatively analyses the gated photochromism and the acidity photomodulation properties of a diacid dithienylethene compound. Photoisomerisation between the open and closed isomers was investigated by UV/visible and 1 H NMR spectroscopy. It was found that the photocyclisation quantum yield of the diacid form was remarkably high (around 90 %). Partial neutralisation of the open isomer revealed a gated photochromism as the photocyclisation quantum yield of the mono‐ and dianion were 50 and 67 %, respectively. A considerable photomodulation of the acidity was observed: the closed isomer is more acid than the open one by more than one p K a unit. This effect has been shown to be exploitable for a reversible photo‐acid generation. This is the first time that a complete quantitative investigation that allows for the determination of the main photochromic, spectral and thermodynamic parameters of a base‐sensitive photochromic diarylethene has been carried out." @default.
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- W2101754503 date "2012-04-11" @default.
- W2101754503 modified "2023-10-18" @default.
- W2101754503 title "Gated Photochromism and Acidity Photomodulation of a Diacid Dithienylethene Dye" @default.
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- W2101754503 doi "https://doi.org/10.1002/chem.201103896" @default.
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