Fluorescence "turn-on" sensing of carboxylate anions with oligothiophene-based o-(carboxamido)trifluoroacetophenones
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SCOPUS
- Title
- Fluorescence "turn-on" sensing of carboxylate anions with oligothiophene-based o-(carboxamido)trifluoroacetophenones
- Authors
- Kim, DS; Ahn, KH
- Date Issued
- 2008-09-05
- Publisher
- AMER CHEMICAL SOC
- Abstract
- 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.
- Keywords
- MOLECULAR RECOGNITION; BIS-CARBOXYLATES; PET CHEMOSENSORS; SENSORS; BINDING; DICARBOXYLATES; PYROPHOSPHATE; PRINCIPLES; RECEPTORS; ADDUCTS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/22531
- DOI
- 10.1021/JO801178Y
- ISSN
- 0022-3263
- Article Type
- Article
- Citation
- JOURNAL OF ORGANIC CHEMISTRY, vol. 73, no. 17, page. 6831 - 6834, 2008-09-05
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