Fluorescent chemosensors that signal carbohydrates in aqueous solution: a novel mechanism for signal transduction is required and found

Juyoung Yoon; Anthony W. Czarnik

doi:10.1117/12.143499

30 April 1993 Fluorescent chemosensors that signal carbohydrates in aqueous solution: a novel mechanism for signal transduction is required and found

Juyoung Yoon, Anthony W. Czarnik

Author Affiliations +

Proceedings Volume 1796, Chemical, Biochemical, and Environmental Fiber Sensors IV; (1993) https://doi.org/10.1117/12.143499
Event: Fibers '92, 1992, Boston, MA, United States

Abstract

2-Anthrylboronic acid (pK_a 8.8) displays decreased fluorescence in the boronate form compared with its boronic acid form, which we attribute to photoinduced electron transfer. When the boronic acid complexes to polyols such as fructose, the pK_a of the complex decreases; thus, the fluorimetrically determined pK_a of the 2-anthrylboronic acid:fructose borate ester is 5.9. These properties combined permit polyol complexation in water to be observed spectrofluorimetrically, which has not been reported previously. Fructose binds with a fluorimetrically determined K_d of 3.7 mM.

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Juyoung Yoon and Anthony W. Czarnik "Fluorescent chemosensors that signal carbohydrates in aqueous solution: a novel mechanism for signal transduction is required and found", Proc. SPIE 1796, Chemical, Biochemical, and Environmental Fiber Sensors IV, (30 April 1993); https://doi.org/10.1117/12.143499

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