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New fluorescent receptor composed of two imidazoliums, two pyrenes and a boronic acid for the recognition of DOPAC

Title
New fluorescent receptor composed of two imidazoliums, two pyrenes and a boronic acid for the recognition of DOPAC
Authors
Jun E.J.Liub H.Choi J.Y.Lee J.Y.Yoon J.
Ewha Authors
윤주영
SCOPUS Author ID
윤주영scopus
Issue Date
2013
Journal Title
Sensors and Actuators, B: Chemical
ISSN
0925-4005JCR Link
Citation
vol. 176, pp. 611 - 617
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
A new fluorescent receptor composed of two imidazoliums, two pyrenes and a boronic acid has been synthesized and studied for the recognition of 3,4-dihydroxyphenylacetic acid (DOPAC), which is the metabolite of dopamine. Dopamine, l-DOPA and catechol also induced fluorescence quenching effects, however, 1 displayed a largest association constant with DOPAC. In addition, d-fructose, d-glucose and l-phenylalanine did not show any significant fluorescence change. These fluorescence changes were observed at pH 7.4 in HEPES(0.02 M, pH 7.4)-CH3CN (95:5, v/v). As far as we are aware of, our receptor 1 is the first example of fluorescent chemosensor which shows selectivity for DOPAC. The unique intermolecular excimer formation and fluorescence quenching effects with DOPAC and catechol are carefully explained based on the theoretical calculations. © 2012 Elsevier B.V. All rights reserved.
DOI
10.1016/j.snb.2012.10.066
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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