用于可视化电化学传感的纸质电致变色阵列

A Paper-Based Electrochromic Array for Visualized Electrochemical Sensing.

作者信息

Zhang Fengling, Cai Tianyi, Ma Liang, Zhan Liyuan, Liu Hong

机构信息

State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China.

Laboratory of Environment and Biosafety, Research Institute of Southeast University in Suzhou, Suzhou 215123, China.

出版信息

Sensors (Basel). 2017 Jan 31;17(2):276. doi: 10.3390/s17020276.

DOI:10.3390/s17020276

PMID:28146120

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5336109/

Abstract

We report a battery-powered, paper-based electrochromic array for visualized electrochemical sensing. The paper-based sensing system consists of six parallel electrochemical cells, which are powered by an aluminum-air battery. Each single electrochemical cell uses a Prussian Blue spot electrodeposited on an indium-doped tin oxide thin film as the electrochromic indicator. Each electrochemical cell is preloaded with increasing amounts of analyte. The sample activates the battery for the sensing. Both the preloaded analyte and the analyte in the sample initiate the color change of Prussian Blue to Prussian White. With a reaction time of 60 s, the number of electrochemical cells with complete color changes is correlated to the concentration of analyte in the sample. As a proof-of-concept analyte, lactic acid was detected semi-quantitatively using the naked eye.

摘要

我们报道了一种用于可视化电化学传感的电池供电纸质电致变色阵列。该纸质传感系统由六个并联的电化学电池组成，由铝空气电池供电。每个单个电化学电池使用电沉积在铟掺杂氧化锡薄膜上的普鲁士蓝斑点作为电致变色指示剂。每个电化学电池预先加载了越来越多的分析物。样品激活电池进行传感。预先加载的分析物和样品中的分析物都会引发普鲁士蓝向普鲁士白的颜色变化。反应时间为60秒时，颜色完全变化的电化学电池数量与样品中分析物的浓度相关。作为概念验证分析物，使用肉眼对乳酸进行了半定量检测。