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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Responsive ruthenium complex probe for phosphorescence and time-gated luminescence detection of bisulfite
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Responsive ruthenium complex probe for phosphorescence and time-gated luminescence detection of bisulfite

机译：苯硫酸氢盐的磷光和时间门控发光检测响应性钌复合探针

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摘要

Sensitive and selective quantification of specific analytes is of great significance in analytical and environmental sciences, as well as in the food industry. Herein, we report the design, synthesis, characterization, and application of a responsive ruthenium(ii) complex probe, Ru-azo, for phosphorescence and time-gated luminescence (TGL) detection of bisulfite, an important additive in the food industry. Upon a specific nucleophilic addition reaction between bisulfite and the azo group of Ru-azo, a new ruthenium(ii) complex, Ru-SO3, was obtained, which resulted in a remarkable increase in phosphorescence intensity, allowing the bisulfite detection to be achieved. In addition, long-lived emissions of Ru-azo (tau = 258 ns) and Ru-SO3 (tau = 261 ns) also enabled the TGL detection of bisulfite in autofluorescence-rich food samples. Through theoretical computations, the photoinduced electron transfer (PET) process within the ruthenium(ii) complex was validated, which unveiled the rationality of the luminescence "off-on" response of Ru-azo to bisulfite. The probe showed advantages of good water solubility, and high sensitivity, selectivity and accuracy for responding to bisulfite, facilitating its application in phosphorescence and TGL detection of bisulfite in aqueous and food samples.
机译：特异性分析物的敏感和选择性定量在分析和环境科学以及食品工业中具有重要意义。在这里，我们报告的设计，合成，表征和响应钌的应用（二）复杂的探头，汝偶氮，将磷光和时间选通发光（TGL）检测亚硫酸氢盐，在食品工业中的重要添加剂。在亚硫酸氢盐和Ru偶氮的偶氮基团之间的特异性亲核加成反应，（II）络合物，钌SO3，得到一个新的钌，这导致在磷光强度的显着增加，从而允许要达到的亚硫酸氢盐的检测。此外，Ru-Azo（Tau = 258ns）和Ru-SO3（Tau = 261ns）的长期排放也使TGL检测富含氟硫酸盐丰富的食物样品。通过理论计算，验证了钌（II）复合物内的光诱导的电子转移（PET）方法，其推出了Ru-Azo至亚硫酸氢盐的发光“脱机”反应的合理性。探针显示出良好的水溶性的优点，以及对亚硫酸氢盐进行响应的高灵敏度，选择性和准确性，促进其在水性和食品样品中磷光的磷光和TGL检测。

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