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Shape‐Controlled Synthesis of Au–Polypyrrole Composites Using Poly(4‐vinylpyridine) Brush Grafted on Graphene Oxide as a Reaction Chamber
Author(s) -
Xing Guoke,
Wang Wenqin,
Wang Ke,
Li Ping,
Chen Tao
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201703183
Subject(s) - polypyrrole , graphene , materials science , oxide , pyrrole , brush , composite material , catalysis , raman spectroscopy , noble metal , polymer brush , polymer , polymer chemistry , chemical engineering , metal , nanotechnology , polymerization , chemistry , organic chemistry , physics , engineering , optics , metallurgy
Controlling the shape of the conducting polymer‐noble metal composites is a key factor in determining their properties and applications. In this paper, we demonstrate a novel strategy to fabricate Au–polypyrrole (PPy) composites with unusual morphology using poly(4‐vinylpyridine) (P4VP) brush grafted on graphene oxide (GO) as a reaction chamber. When the GO/P4VP brush bearing AuCl 4 − ions is exposed to pyrrole vapor or directly immersed into pyrrole solution, novel Au−PPy nanotubules and flower‐like Au mesoparticles–PPy composites are formed on the surface of GO/P4VP brush, respectively. The application of the as‐prepared GO/P4VP/Au−PPy composites in catalysis and surface‐enhanced Raman scattering (SERS) are investigated. The relevant results exhibit that the GO/P4VP/Au−PPy nanotubules can act as an efficient catalyst for reduction of 4‐nitrophenol, and the GO/P4VP/flower‐like Au mesoparticles–PPy composites can be used as a sensor platform for the detection of organic molecules by SERS.