High performance flexible pH sensor based on polyaniline nanopillar array electrode

详细信息    查看全文

• 作者：Jo Hee Yoon^a ; ¹ ; Seok Bok Hong^a ; ¹ ; Seok-Oh Yun^b ; Seok Jae Lee^b ; Tae Jae Lee^b ; ^{tjlee@nnfc.re.kr} ; Kyoung G. Lee^b ; ^{kglee@nnfc.re.kr} ; Bong Gill Choi^a ; ^{bgchoi@kangwon.ac.kr}
• 关键词：pH sensor ; Polyaniline ; Electrodeposition ; Nanopillar ; Flexible
• 刊名：Journal of Colloid and Interface Science
• 出版年：2017
• 出版时间：15 March 2017
• 年：2017
• 卷：490
• 期：Complete
• 页码：53-58
• 全文大小：1520 K
• 卷排序：490

文摘

Flexible pH sensor technologies have attracted a great deal of attention in many applications, such as, wearable health care devices and monitors for chemical and biological processes. Here, we fabricated flexible and thin pH sensors using a two electrode configuration comprised of a polyaniline nanopillar (PAN) array working electrode and an Ag/AgCl reference electrode. In order to provide nanostructure, soft lithography using a polymeric blend was employed to create a flexible nanopillar backbone film. Polyaniline-sensing materials were deposited on a patterned-nanopillar array by electrochemical deposition. The pH sensors produced exhibited a near-Nernstian response (∼60.3 mV/pH), which was maintained in a bent state. In addition, pH sensors showed other excellent sensor performances in terms of response time, reversibility, repeatability, selectivity, and stability.