A novel luminol-coordinated silver(I) organic gel with self-enhanced chemiluminescence applied for uric acid detection

化学发光 鲁米诺 催化作用 化学 猝灭(荧光) 电子顺磁共振 发光 光化学 激进的 核化学 荧光 材料科学 有机化学 物理 量子力学 光电子学 核磁共振
作者
Xinjie Wu,Congyi Hu,Siyu Xiao,Xue Wang,Shu Jun Zhen,Cheng Zhi Huang,Yuanfang Li
出处
期刊:Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy [Elsevier BV]
卷期号:300: 122906-122906 被引量:5
标识
DOI:10.1016/j.saa.2023.122906
摘要

A novel silver(I)-based metal–organic gel (AgMOG) consisting of luminol as the ligand was synthesized by a facile strategy, which was found to exhibit self-enhancing chemiluminescence (CL) property. Based on this, a new AgMOG-K2S2O8 CL system without additional catalyst was established. According to the results of CL spectra, electron spin resonance (ESR) spectra as well as the influence of radical scavengers to AgMOG-K2S2O8 system, the possible CL mechanism of this system was discussed. In this CL system, AgMOG exhibited the dual properties of catalysis and luminescence. On the one hand, AgMOG can catalyze K2S2O8 to produce SO4•−. The generated SO4•− can be converted to hydroxyl radical (OH•) under alkaline condition, and further converted to other radical oxygen species (ROS, such as 1O2 and O2•−). Furthermore, the reaction between the K2S2O8 and H2O can form H2O2, which also can be catalyzed by AgMOG to produce ROS. On the other hand, the AgMOG can be oxidized by ROS to emit strong CL signal. Then, based on the quenching effect of uric acid (UA) to this CL system, a method for UA detection was established with a good linearity over the range from 0.08 to 10 µmol·L−1. In this work, a new CL luminant with catalytic property was synthesized by a simple method, and a self-enhancing AgMOG-K2S2O8 CL system was developed for the first time, providing a novel direction for the application of MOG in the CL field.
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