Fluorescence "turn-on" sensing of carboxylate anions with oligothiophene-based o-(carboxamido)trifluoroacetophenones.

doi:10.1021/jo801178y

Paper

Fluorescence "turn-on" sensing of carboxylate anions with oligothiophene-based o-(carboxamido)trifluoroacetophenones.

Published Aug 2, 2008 · Dae-Sik Kim, K. Ahn

The Journal of organic chemistry

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70

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0

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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.

Highly Cited

Study Snapshot

Carboxamido-trifluoroacetophenones with ter- or pentathiophene moiety show fluorescence enhancement upon binding carboxylate anions, due to intramolecular H-bonding stabilization of anion-ionophore adducts.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

Paper

Fluorescence "turn-on" sensing of carboxylate anions with oligothiophene-based o-(carboxamido)trifluoroacetophenones.

References

Citations

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