Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 73, Issue 17, Pages 6831-6834Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jo801178y
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Funding
- Korea Health Industry Development Institute [A05-0426-B20616-05N1-00010A]
- Korea Research Foundation [KRF-2005-070-C00078]
- Korea Health Promotion Institute [A050426] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2005-070-C00078] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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o-(Carboxamido)trifluoroacetophenones containing ter- or pentathiophene moiety as a fluorophore exhibit fluorescence enhancement upon binding carboxylate anions. Particularly, the terthiophene derivative shows a large fluorescence enhancement factor (FEF = 120). The enhancement is explained by intramolecular H-bonding stabilization of an anion-ionophore adduct, through which a possible quenching process, the n-pi* transition from the trifluoroacetophenone moiety, is eliminated.
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