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2, 2′-Dihydroxyazobenzene (DHAB) demonstrated high sensitivity and low selectivity toward three anions: CN − , CO 32− , and HCO 3− . In the presence of Cu(II), complex DHAB–Cu(II) could give rise to enhanced fluorescence intensity by about 45-fold at 590nm and visible red-to-reddish orange color change upon the addition of cyanide by utilizing an indirect method,...
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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