Electrogenerated Chemiluminescent Anion Sensing: Selective Recognition and Sensing of Pyrophosphate
Electrogenerated Chemiluminescent Anion Sensing: Selective Recognition and Sensing of Pyrophosphate
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DOI：
10.1021/ac1017293
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发表时间：
2010-10-01
影响因子：
7.4
通讯作者：
Hong, Jong-In
中科院分区：
文献类型：
--
作者：
Shin, Ik-Soo;Bae, Se Won;Hong, Jong-In
近年来，电致化学发光（ECL）分析和超分子阴离子传感分别取得了显著的进展。在本文中，我们展示了一个新的概念证明的ECL为基础的焦磷酸盐（PPi）传感，其中发射强度的电化学开启改变的ECL PPi传感器（1- 2 Zn）由两个正交键合的部分：硼二吡咯亚甲基（ECL报告）和苯氧桥连的双（锌2 +-吡啶二甲基胺）复合物（PPi受体）。当PPi被后者选择性识别时，根据由前者产生的绿色ECL的强度变化确认PPi的存在。在PPi识别过程中，受体的电子状态发生变化，这刺激了ECL强度的衰减。在阴离子结合时光发射的电化学“开-关”触发形成了新的阴离子传感策略的基础。我们预计，绿色的ECL传感将提供一个优势，目前的ECL分析。
Recently, significant advances have been made independently in electrogenerated chemiluminescence (ECL) analysis and supramolecular anion sensing. Herein, we demonstrate a new proof of concept for ECL-based pyrophosphate (PPi) sensing, where the emission intensity is changed by electrochemical turn-on. The ECL PPi sensor (1-2Zn) consists of two orthogonally bonded moieties: boron dipyrromethene (ECL reporter) and a phenoxo-bridged bis(Zn2+-dipicolylamine) complex (PPi receptor). The presence of PPi is confirmed from the change in the intensity of green ECL generated from the former when PPi is selectively recognized by the latter. During PPi recognition, changes are caused in the electronic states of the receptor, and this stimulates the attenuation of ECL intensity. The electrochemical "on-off" triggering of light emission upon anion binding forms the basis of a new anion sensing strategy. We expect that green-colored ECL sensing would offer an advantage to current ECL analysis.