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Fluorescence sensing with small molecular chemosensors is a versatile technique for elucidation of function of various substances. Herein, a new zinc ion supported fluorescent turn-on system for bovine serum albumin (BSA) has been demonstrated. The fluorescence intensity increases 15.4-fold and visual color changes from light reddish orange to yellow can be detected after adding BSA.
This paper presents a new colorimetric reversible fluorescent turn-on chemosensor molecule for zinc ion based on an azobenzene derivative. The basal fluorescence intensity of the chemosensor molecule is little affected under physiological pH 5–9, whilst the excitation (507nm) and emission (610nm) wavelength of the molecular probe for zinc ion is in the visible range.
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