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2-(benzimidazol-2-yl)-3-hydroxychromone derivatives: spectroscopic properties and a possibile alternative intramolecular proton phototransfer |
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| Authors: | D A Svechkarev G V Karpushina L L Lukatskaya A O Doroshenko |
| Institution: | (1) Institute for Chemistry at Kharkov V.N. Karazin National University, 61077 Kharkov, Ukraine |
| Abstract: | Three 2-(benzimidazol-2-yl)-3-hydroxychromone derivatives were synthesized. Their spectroscopic and fluorescent properties,
due to excited state intramolecular proton transfer (ESIPT) from OH to carbonyl, were studied. Theoretical possibility of
an alternative intramolecular H-bonding and experimental evidence for such behavior are discussed.
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| Keywords: | 3-hydroxychromones Benzimidazole Intramolecular hydrogen bonding Excited state intramolecular proton transfer reaction (ESIPT) Absorption and fluorescence spectra |
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