Mercaptooxazole–phenazine based blue fluorescent sensor for the ultra-sensitive detection of mercury(<scp>ii</scp>) ions in aqueous solution
作者:Hai-Li Zhang、Wen-Ting Li、Wen-Juan Qu、Tai-Bao Wei、Qi Lin、You-Ming Zhang、Hong Yao
DOI:10.1039/c7ra07992c
日期:——
Herein, a mercury(II) ionfluorescentsensor (Z-3) with high sensitivity and immediate response is designed and synthesized. The sensor uses the phenazine group as a luminophore and sulfhydryl as a recognition moiety. The sensor is easily synthesized and it exhibits a remarkable blue shift with Hg2+. Correspondingly, its fluorescence color changes from yellow to blue. In addition, the low naked eye
Ratiometric fluorescent sensor based oxazolo-phenazine derivatives for detect hypochlorite via oxidation reaction and its application in environmental samples
In this work, we designed and synthesized a ratiometric fluorescent sensor (POC) based phenazine derivative which can specifically detect hypochlorite (detection limit equals to 8.9 × 10−7 M) in DMSO/H2O (3:7, v/v) solution. With addition of hypochlorite to the solution of POC, hypochlorite broken π-π stacking of POC, and then oxidizes sulfur atoms in phenazine groups to sulfoxide, which resulted in
Efficient detection of<scp>l</scp>-aspartic acid and<scp>l</scp>-glutamic acid by self-assembled fluorescent microparticles with AIE and FRET activities
The detection ofl-aspartic acid andl-glutamic acid was tackled using fluorescent microparticles constructed by the combination of aggregation-induced emission and self-assembly-induced Förster resonance energy transfer.
In this work, we constructed a supramolecular gel (PN-G) by phenazine derivative, which can ultrasensitive detect cyanide (detection limit equals to 4.18 x 10(-10) M). The decrease of fluorescent intensity displayed a linear relationship in the range of 0-0.4 equivalents of cyanide. And no significant fluorescence quenching was observed for all used interfering ions. The cyanide recognition mechanism of PN-G was verified by XRD, NMR, MS and SEM. With addition of cyanide to the supramolecular gel (PN-G), cyanide broken pi-pi stacking of PN-G, and then PN-G undergoes a nucleophilic addition reaction with CN-, resulting in fluorescence quenched.