Synthesis and luminescence properties of anhydrides and N-phenylimides of substituted 4-(5-phenyl-2-oxazolyl)-naphthalic acids |
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Authors: | B M Krasovitskii S E Kovalev V M Shershukov |
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Institution: | 1. All-Union Scientific-Research Institute of Single Crystals, Scintillation Materials, and Ultrapure Chemical Substances, Khar'kov
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Abstract: | Anhydrides and N-phenylimides of 4-(5-phenyl-2-oxazolyl)naphthalic acids with various substituents in the para position of the phenyl ring were synthesized. Electron-donor substituents, particularly the dimethylamino group, induce an appreciable long-wave shift of the absorption maxima and the luminescence due to their interaction with the carbonyl group of the peri-anhydride grouping. A large Stokesian shift and a high photoluminescence quantum yield are characteristic for the dimethylamino-substituted anhydrides. |
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