title: Ion sensors based on novel fiber organic electrochemical transistors for lead ion detection.
abstract: Fiber organic electrochemical transistors (FECTs) based on polypyrrole and nanofibers have been prepared for the first time. FECTs exhibited excellent electrical performances, on/off ratios up to 10(4) and low applied voltages below 2 V. The ion sensitivity behavior of the fiber organic electrochemical transistors was investigated. It exhibited that the transfer curve of FECTs shifted to lower gate voltage with increasing cations concentration, the sensitivity reached to 446 μA/dec in the 10(-5)-10(-2) M Pb(2+) concentration range. The ion selective properties of the FECTs have also been systematically studied for the detection of potassium, calcium, aluminum, and lead ions. The devices with different cations showed great difference in response curves. It was suitable for selectively monitoring Pb(2+) with respect to other cations. The results indicated FECTs were very effective for electrochemical sensing of lead ion, which opened a promising perspective for wearable electronics in healthcare and biological application. Graphical Abstract The schematic diagram of fiber organic electrochemical transistors based on polypyrrole and nanofibers for ion sensing.
authors.affiliation: College of Materials Science and Engineering, Wuhan Textile University, Wuhan, Hubei, 430200, China.
authors.forename: Yuedan
authors.initials: Y
authors.lastname: Wang
authors.affiliation: College of Materials Science and Engineering, Wuhan Textile University, Wuhan, Hubei, 430200, China.
authors.forename: Zhou
authors.initials: Z
authors.lastname: Zhou
authors.affiliation: College of Materials Science and Engineering, Wuhan Textile University, Wuhan, Hubei, 430200, China.
authors.forename: Xing
authors.initials: X
authors.lastname: Qing
authors.affiliation: College of Materials Science and Engineering, Wuhan Textile University, Wuhan, Hubei, 430200, China.
authors.forename: Weibing
authors.initials: W
authors.lastname: Zhong
authors.affiliation: College of Materials Science and Engineering, Wuhan Textile University, Wuhan, Hubei, 430200, China.
authors.forename: Qiongzhen
authors.initials: Q
authors.lastname: Liu
authors.affiliation: College of Materials Science and Engineering, Wuhan Textile University, Wuhan, Hubei, 430200, China.
authors.forename: Wenwen
authors.initials: W
authors.lastname: Wang
authors.affiliation: College of Materials Science and Engineering, Wuhan Textile University, Wuhan, Hubei, 430200, China.
authors.forename: Mufang
authors.initials: M
authors.lastname: Li
authors.affiliation: College of Materials Science and Engineering, Wuhan Textile University, Wuhan, Hubei, 430200, China.
authors.forename: Ke
authors.initials: K
authors.lastname: Liu
authors.affiliation: College of Materials Science and Engineering, Wuhan Textile University, Wuhan, Hubei, 430200, China. wangdon08@126.com.
authors.forename: Dong
authors.initials: D
authors.lastname: Wang
mesh_terms: D002413:Cations, Divalent / Q000032:analysis; D055664:Electrochemical Techniques / Q000295:instrumentation*; D007854:Lead / Q000032:analysis*; D057230:Limit of Detection; D057139:Nanofibers / Q000737:chemistry* / Q000648:ultrastructure; D011108:Polymers / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*; D014173:Transistors, Electronic
chemical_list: D002413:Cations, Divalent; D011108:Polymers; D011758:Pyrroles; D007854:Lead; C067635:polypyrrole
keywords: Ion sensor; Lead ions; Nanofiber; Organic electrochemical transistor; Polymer