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- W2952806501 abstract "Condensation of donor-substituted aldehydes on methylpyrimidine led to two series of fluorescent molecules depending on the position of the methyl group. Whereas highly emissive 4-arylvinylpyrimidine derivatives are well-known, this is the first example of fluorescent 2-arylvinylpyrimidine compounds. The optical properties of the two families have been thoroughly compared. Whereas the series derived from 2-methylpyrimidine exhibit a blue shift in absorption and emission in comparison with 4-arylvinylpyrimidine, the influence of the position is less predictable on the fluorescence quantum yield. These compounds also exhibit halochromism: when adding acid, a bathotromic shift is observed in absorption whereas an increase of the fluorescence intensity which is red-shifted except for amino derivatives (a progressive quench of emission is observed in these cases). An emission solvatochromism study has shown that a higher intramolecular charge transfer seems to occur in 2-arylvinylpyrimidines than in 4-arylvinylpyrimidines." @default.
- W2952806501 created "2019-06-27" @default.
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- W2952806501 date "2013-11-04" @default.
- W2952806501 modified "2023-09-25" @default.
- W2952806501 title "ChemInform Abstract: 2-Arylvinylpyrimidines versus 4-Arylvinylpyrimidines: Synthesis and Comparison of the Optical Properties." @default.
- W2952806501 cites W2033299094 @default.
- W2952806501 doi "https://doi.org/10.1002/chin.201347155" @default.
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