Correction: Role of solute-solvent hydrogen bonds on the ground state and the excited state proton transfer in 3-hydroxyflavone. A systematic spectrophotometric study.
作者： Simone Lazzaroni , Daniele Dondi , Alberto Mezzetti , Stefano Protti
DOI: 10.1039/C8PP00053K
关键词:
摘要: A detailed account on the photophysics of 3-hydroxyflavone (3HF) in 27 organic solvents is reported. Dual fluorescence neutral 3HF was observed protic, polar, and weakly polar solvents, endowed with sufficiently high hydrogen bond accepting and/or donating capabilities. Ground-state solvent-induced deprotonation reported 14 cases. anion investigated, constant Kdep calculated. Previously models (based solute-solvent intermolecular bonds) to explain solvent effects Excited-State Intramolecular Proton Transfer (ESIPT) have been re-examined improved order rationalize photophysical behaviour all studied solvents. Hydrogen donor acidity acceptor basicity are shown be key parameters. The results discussed framework use as an environment-sensitive fluorescent sensor several research fields, a model system study ESIPT reactions. Solvent reactivity also discussed, role surrounding media chemistry flavonols emerging topic natural product research.
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