H-bonding interactions enable a 3D pillared cobalt(Ⅱ) coordination polymer for touchless finger moisture detection  

作　　者：Hao Dong Le-Xi Zhang Heng Xu Yan-Yan Yin Xing-Bai Zhao Li-Jian Bie 

机构地区：[1]School of Materials Science and Engineering,Tianjin Key Lab for Photoelectric Materials and Devices,Key Laboratory of Display Materials and Photoelectric Devices(Ministry of Education),National Demonstration Center for Experimental Function Materials Education,Tianjin University of Technology,Tianjin 300384,China [2]Department of Environmental Science and Engineering,Nankai University Binhai College,Tianjin 300270,China

出　　处：《Tungsten》2023年第1期109-117,共9页钨科技（英文）

基　　金：financially supported by the Tianjin Municipal Education Commission (No. 2018KJ271);National Natural Science Foundation of China (NSFC, No. 21601094, 21401139, and 21271139)。

摘　　要：Coordination polymers(CPs) are emerging as the next generation of macromolecule materials in many industrial and technological applications,e.g.gas/humidity sensing.The design of CP-based sensors with high performance and low cost is of significance,but this work is still in the infancy stage.In this contribution,a new one dimensional(1D) CP has been successfully synthesized by a simple solvent evaporation method at room temperature,namely [Co(DPP)(H_(2)O)_(2)]n·(TCA)2(H_(2)O)_(4)(named as Co-1,HTCA=3-thiophenezoic acid,DPP=1,3-di(4-pyridyl)propane).The Co-1 structure contains abundant H-bonding interactions,weaving it from 1D chain structure into three dimensional(3D) pillared-layer structure.As an impedimetric humidity sensing material,this CP exhibits short response time,small hysteresis,excellent repeatability,and good stability in the working range of 11%-97% relative humidity(RH).Furthermore,it also shows excellent performance in monitoring the moisture content of human finger skin.By analyzing the complex impedance spectra,the humidity sensing mechanism of Co-1 sensor was expounded at different RH ranges.

关 键 词：COBALT Coordination polymer H-bonding interactions Humidity sensor Finger detection 

分 类 号：O62[理学—有机化学]