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Novel fluorescent pH sensors based on intramolecular hydrogen bonding ability of naphthalimide

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Indexed by:期刊论文

Date of Publication:2004-08-05

Journal:ORGANIC LETTERS

Included Journals:SCIE、PubMed

Volume:6

Issue:16

Page Number:2757-2760

ISSN No.:1523-7060

Abstract:4-Piperidine-naphthalimide derivatives containing potential acceptors for hydrogen bonding were synthesized, and their fluorescence properties were examined. Some of the compounds with a 2-imino-oxalidin (thiazolidin) side chain at the imide moiety exhibit a strong fluorescence quench and some red shift in weakly acidic conditions, caused by the formation of an intramolecular hydrogen bond. Their pK(a), values were estimated to be about 6.4-7.5. The results showed that these compounds could serve as novel fluorescent pH sensors for further application.

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