title: Fabrication of gold-directed conducting polymer nanoarrays for high-performance gas sensor.
abstract: Gold-directed polypyrrole (PPy) nanoarrays are fabricated by hydrogel-assisted nanotransfer edge printing (HnTEP) and electrochemical polymerization. Gold nanoarrays are fabricated through the HnTEP method, which involves metal deposition, hydrogel etching, and nanotransfer edge printing. By utilizing the well-positioned gold nanostructures, PPy nanoarrays with smooth morphology and controllable dimensions are fabricated through in situ electrochemical polymerization, the results of which are characterized by scanning electron microscopy and atomic force microscopy. A gas sensor based on PPy nanoarrays results in excellent sensing capabilities towards NH₃ detection, especially the sensitivity and fast response. This method appears to be general and may aid in the future design and implementation of other active materials which can also be manipulated by the same procedure and serve as functional components for chemical sensing, optoelectronics, biodetection, and other applications.
authors.affiliation: Department of Chemistry, Renmin University of China, Beijing 100872, China.
authors.forename: Mianqi
authors.initials: M
authors.lastname: Xue
authors.forename: Xinlei
authors.initials: X
authors.lastname: Ma
authors.forename: Zhuang
authors.initials: Z
authors.lastname: Xie
authors.forename: Liting
authors.initials: L
authors.lastname: Duan
authors.forename: Yuqian
authors.initials: Y
authors.lastname: Jiang
authors.forename: Meining
authors.initials: M
authors.lastname: Zhang
authors.forename: Tingbing
authors.initials: T
authors.lastname: Cao