Abstract
An anthracene thiazole based Schiff base L was synthesized and employed for fluorescence switch-on detection of maleic acid in aqueous DMSO. The non-fluorescent L (10-5M) showed an instantaneous and selective fluorescence enhancement at 506nm upon interaction with maleic acid (10-5M). Other potential carboxylic acids (10-5M), such as malic acid, citric acid, acetic acid, cinnamic acid, tartaric acid, succinic acid, fumaric acid, oxalic acid and malonic acid failed to alter the chromo-fluorogenic properties of L. Probe L can be employed to detect maleic acid down to 2.74 × 10-6M. The probe L showed good linearity from 2.97 to 6.87µM. Analytical utility of L was examined by detecting maleic acid in various food additives and drosophila larvae.
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