Lee Hyemin, Kim Min-Yeong, Lee Haeri
Department of Chemistry, Hannam University Daejeon 34054 Republic of Korea
Department of Electrochemistry, Korea Institute of Materials Science (KIMS) Changwon 51508 Republic of Korea
RSC Adv. 2022 Apr 28;12(21):12957-12966. doi: 10.1039/d2ra01239a.
Coordination polymers (CPs: [ZnL] (X) , L = -1,4-bis(imidazolyl)-2-butene; X = BF , ClO , NO ) allow for detection of the 4-nitrophenol (4-NP) oxidation process by enhanced electrochemical signals. Electrochemical measurement is a highly sensitive method providing much evidence of chemical reactions on an electrode surface. In the present study, we designed and synthesized, with reference to X-ray diffraction data and by spectroscopic analyses, new 3D coordination structures containing imidazolyl donors and zinc(ii). The presence of microcrystals [ZnL] (BF) on the working electrode enhanced the redox signals. Therefore, we propose a simple catalytic process that can explain these results and clarify the influence of anions that constitute CP materials used to improve electrochemical detection applications. The CP materials were characterized by nuclear magnetic resonance (NMR), infrared spectroscopy (IR), thermogravimetric (TG) analyses, single crystal X-ray diffraction (SC-XRD), and electrochemical analyses.
配位聚合物（CPs：[ZnL] (X) ，L = -1,4-双（咪唑基）-2-丁烯；X = BF ，ClO ，NO ）可通过增强的电化学信号检测4-硝基苯酚（4-NP）的氧化过程。电化学测量是一种高度灵敏的方法，能提供许多关于电极表面化学反应的证据。在本研究中，我们参考X射线衍射数据并通过光谱分析，设计并合成了含有咪唑基供体和锌（II）的新型三维配位结构。工作电极上微晶[ZnL] (BF) 的存在增强了氧化还原信号。因此，我们提出了一个简单的催化过程，该过程可以解释这些结果，并阐明构成用于改善电化学检测应用的CP材料的阴离子的影响。通过核磁共振（NMR）、红外光谱（IR）、热重（TG）分析、单晶X射线衍射（SC-XRD）和电化学分析对CP材料进行了表征。
