期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 77, 期 8, 页码 4087-4096出版社
AMER CHEMICAL SOC
DOI: 10.1021/jo3004919
关键词
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A new series of push-pull arylvinyldiazines has been efficiently prepared by aldol condensation between the appropriate methyldiazine and aromatic aldehyde. The optical absorption and emission properties of these chromophores were studied in different solvents and media. These compounds act as polarity sensors with a strong positive emission solvatochromism. This behavior suggests a highly polar emitting state, which is characteristic of compounds that undergo an internal charge transfer upon excitation. These molecules also exhibit halochromic properties and are potential colorimetric and luminescence pH sensors. The second-order nonlinear properties have been investigated for some of the compounds, and large and positive mu beta are obtained, in particular, for pyrimidine derivatives.
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