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Reaction-based Indicator displacement Assay (RIA) for the selective colorimetric and fluorometric detection of peroxynitrite

机译:基于反应的指示剂位移测定(RIA)用于过氧亚硝酸盐的选择性比色和荧光检测

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摘要

Using the self-assembly of aromatic boronic acids with Alizarin Red S (ARS), we developed a new chemosensor for the selective detection of peroxynitrite. Phenylboronic acid (PBA), benzoboroxole (BBA) and 2-(N,N-dimethylaminomethyl)phenylboronic acid (NBA) were employed to bind with ARS to form the complex probes. In particular, the ARS–NBA system with a high binding affinity can preferably react with peroxynitrite over hydrogen peroxide and other ROS/RNS due to the protection of the boron via the solvent-insertion B–N interaction. Our simple system produces a visible colorimetric change and on–off fluorescence response towards peroxynitrite. By coupling a chemical reaction that leads to an indicator displacement, we have developed a new sensing strategy, referred to herein as RIA (Reaction-based Indicator displacement Assay).
机译:使用芳香族硼酸与茜素红S(ARS)的自组装,我们开发了一种新的化学传感器,用于选择性检测过氧亚硝酸盐。苯硼酸(PBA),苯并硼唑(BBA)和2-(N,N-二甲基氨基甲基)苯基硼酸(NBA)与ARS结合形成复合探针。尤其是,具有高结合亲和力的ARS-NBA系统可以通过过氧化氢和其他ROS / RNS与过氧亚硝酸盐发生反应,这是由于硼通过溶剂-插入B-N相互作用保护了硼。我们的简单系统会产生可见的比色变化以及对过氧亚硝酸盐的开关荧光响应。通过耦合导致指示剂位移的化学反应,我们开发了一种新的传感策略,在本文中称为RIA(基于反应的指示剂位移测定)。

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