Facile and template‐free method toward chemical synthesis of polyaniline film/nanotube structures. Issue 24 (5th September 2017)

• Record Type: Journal Article
• Authors: Liu, Pei; Zhu, Yisi; Torres, Jorge; Lee, Seung Hee; Yun, Minhee
• Is Part Of: Journal of polymer science. Volume 55:Issue 24(2017)
• Page Start: 3973
• Page End: 3979
• Publication Date: 2017-09-05
• Subjects: biomaterials -- chemical synthesis -- conjugated polymers -- field‐effect transistors -- film/nanotubes -- nanotube -- polyaniline -- sensors; 547
• DOI: 10.1002/pola.28749
• Languages: English
• ISSNs: 0887-624X

Abstract

ABSTRACT: A facile and template‐free method is reported to synthesize a new thin film structure: polyaniline (PANI) film/nanotubes (F/N) structure. The PANI F/N is a 100‐nm thick PANI film embedded with PANI nanotubes. This well‐controlled method requires no surfactant or organic acid as well as relatively low concentration of reagents. Synthesis condition studies reveal that aniline oligomers with certain structures are responsible for guiding the growth of the nanotubes. Electrical characterization also indicates that the PANI F/N possesses similar field‐effect transistor characteristics to bare PANI film. With its 20% increased surface‐area‐to‐volume (S/V) ratio contributed by surface embedded nanotubes and the excellent p‐type semiconducting characteristic, PANI F/N shows clear superiority compared with bare PANI film. Such advantages guarantee the PANI F/N a promising future toward the development of ultra‐high sensitivity and low‐cost biosensors © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem.2017, 55, 3973–3979 Abstract : Thin film polyaniline (PANI) film/nanotubes (F/N) structures are chemically synthesized through a well‐controlled and template‐free method. Certain structured aniline oligomers are found to be responsible for guiding the growth of the nanotubes. With the extremely high surface area and excellent p‐type semiconductor characteristics, the PANI F/N show a promising future toward the development of ultra‐high sensitivity and low‐cost biosensors.