Indexed by:期刊论文

Date of Publication:2009-02-06

Journal:JOURNAL OF ORGANIC CHEMISTRY

Included Journals:SCIE、PubMed

Volume:74

Issue:3

Page Number:1333-1336

ISSN No.:0022-3263

Abstract:Carbazole-based bisboronic acids were found to be enantioselective fluorescent sensors for tartaric acid. The fluorescence response toward the enantiomers of tartaric acid at neutral pH displayed enhancement/diminishment. The sensor displays an unusual fluorescence intensity-pH relationship with diminished emission at acidic pH but. enhanced emission at basic pH. Photoinduced electron transfer (PET) from the fluorophore to the protonated amine/phenylboronic acid unit is proposed to be responsible for this effect, which is rationalized by density functional theory (DFT) calculations.