Solution-processed wafer-scale nanoassembly of conducting polymers enables selective ultratrace nerve agent detection at low power  

作　　者：Bin Luo Jianan Weng Zhi Geng Qichao Pan Xilin Pei Yong He Chuanzhi Chen Hongxing Zhang Renbo Wei Yupeng Yuan Jin Yang Jinyi Ma Zhengwei You Bo Zhu 

机构地区：[1]School of Materials Science and Engineering&Shanghai Engineering Research Center of Organ Repair,Shanghai University,Shanghai 200444,China [2]Innovation Center for Textile Science and Technology,Donghua University,Shanghai 201620,China [3]Institute of NBC Defense,P.O.Box 1048,Beijing 102205,China [4]School of Chemical Engineering,Northwest University,Xi’an 710069,China [5]th Institute of China Electronics Technology Group,Chongqing 400060,China [6]State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Material Science and Engineering,Donghua University,Shanghai 201620,China

出　　处：《Nano Research》2023年第4期5653-5664,共12页纳米研究（英文版）

基　　金：financial support from the National Natural Science Foundation of China(Nos.21474014 and 22175111);Z.G.thanks financial support from the National Natural Science Foundation of China(No.21704013);China Postdoctoral Science Foundation(No.2017M611416);R.B.W.thanks for financial support from the National Postdoctoral Program for Innovative Talents(No.BX201700044).

摘　　要：There is a great interest in developing microelectronic devices based on nanostructured conducting polymers that can selectively electro-couple analytes at high sensitivity and low power.Nanostructured conducting polymers have emerged as promising candidates for this technology due to their excellent stability with low redox potential,high conductivity,and selectivity endowed by chemical functionalization.However,it remains challenging to develop cost-effective and large-scale assembly approaches for functionalized conducting polymers in the practical fabrication of electronic devices.Here,we reported a straightforward waferscale assembly of nanostructured hexafluoroisopropanol functionalized poly(3,4-ethylenedioxythiophene)(PEDOT-HFIP)on smooth substrates.This approach is template-free,solution-processed,and adaptable to conductive and nonconductive substrates.By this approach,the nanostructured PEDOT-HFIPs could be easily integrated onto interdigitated electrodes with intimate ohmic contact.At the optimized space-to-volume ratio,we demonstrated a low-power,sensitive,and selective nerve agent sensing technology using this platform by detecting sarin vapor with a limit of detection(LOD)of 10 ppb and signal strength of 400 times the water interference at the same concentration,offering significant advantages over existing similar technologies.We envision that its easy scale-up,micro size,small power consumption,and combination of high sensitivity and selectivity make it attractive for various wearable platforms.

关 键 词：conducting polymer PEDOT sensor NANO nerve agent 

分 类 号：O63[理学—高分子化学]