title: A solid-contact Pb(2+)-selective electrode using poly(2-methoxy-5-(2'-ethylhexyloxy)-p-phenylene vinylene) as ion-to-electron transducer.
abstract: In this work, a novel all-solid-state polymeric membrane Pb(2+)-selective electrode was developed by using for the first time poly(2-methoxy-5-(2'-ethylhexyloxy)-p-phenylene vinylene) (MEH-PPV) as solid contact. To demonstrate the ion-to-electron transducing ability of MEH-PPV, chronopotentiometry and electrochemical impedance spectroscopy measurements were carried out. The proposed electrodes showed a Nernstian response of 29.1 mV decade(-1) and a lower detection limit of subnanomolar level. No water film was observed with the conventional plasticized PVC membrane. This work demonstrates a new strategy for the fabrication of robust potentiometric ion sensors.
authors.affiliation: CAS and Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China.
authors.forename: Shunyang
authors.initials: S
authors.lastname: Yu
authors.forename: Fuhai
authors.initials: F
authors.lastname: Li
authors.forename: Tanji
authors.initials: T
authors.lastname: Yin
authors.forename: Yongming
authors.initials: Y
authors.lastname: Liu
authors.forename: Dawei
authors.initials: D
authors.lastname: Pan
authors.forename: Wei
authors.initials: W
authors.lastname: Qin