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An aggregation-induced emission-based fluorescence turn-on probe for Hg2+ and its application to detect Hg2+ in food samples

机译:聚集诱导的基于发射的Hg2 +荧光开启探针及其在食品样品中检测Hg2 +的应用

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In this work, we presented a new tetraphenylethene-derived fluorescent probe TPE-M for Hg ~(2+) detection in an aqueous solution. Probe TPE-M is molecularly dissolved in CH _(3) OH/PBS (20 mM, pH = 7.4) (3?:?7, v/v) mixed solution and is almost non-emissive. Reaction of TPE-M with Hg ~(2+) leads to release of an AIE-active precursor 4 , and results in a significant fluorescence enhancement. The Hg ~(2+) recognition process has some distinct advantages including rapid response, high selectivity and sensitivity, strong anti-interference ability, and a low detection limit (4.16 × 10 ~(?6) M). Moreover, the probe is applicable to detect Hg ~(2+) in real food samples such as shrimp, crab and teas, suggesting the practical applicability of TPE-M .
机译:在这项工作中,我们提出了一种新的源自四苯乙烯的荧光探针TPE-M,用于检测水溶液中的Hg〜(2+)。探针TPE-M分子溶解在CH_(3)OH / PBS(20 mM,pH = 7.4)(3?:?7,v / v)混合溶液中,几乎没有发射性。 TPE-M与Hg〜(2+)的反应导致AIE活性前体4的释放,并导致显着的荧光增强。 Hg〜(2+)识别过程具有一些明显的优势,包括响应速度快,选择性和灵敏度高,抗干扰能力强以及检测限低(4.16×10〜(?6)M)。此外,该探针可用于检测虾,螃蟹和茶叶等真实食物样品中的Hg〜(2+),表明TPE-M的实际适用性。

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