Solvent influence on excited-state intramolecular proton transfer in 3-hydroxychromone derivatives studied by cryogenic high-resolution fluorescence spectroscopy

AN Bader, V Pivovarenko, AP Demchenko…

Index: Bader, Arjen N.; Pivovarenko, Vasyl; Demchenko, Alexander P.; Ariese, Freek; Gooijer, Cees Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 2003 , vol. 59, # 7 p. 1593 - 1603

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Citation Number: 18

Abstract

High-resolution Shpol'skii spectra (recorded at 10 K in n-octane) of 3-hydroxychromone (3HC) substituted at the 2-position with a furan (3HC-F), a benzofuran (3HC-BF) or a naphthofuran group (3HC-NF) are presented. Being close analogues of 3-hydroxyflavone (3HF), these compounds can undergo excited-state intramolecular proton transfer (ESIPT). Luminescence can occur from the normal N* state (blue) or from the tautomeric T* state ( ...