[RSC Advances] Poly(2-vinylpyrine) Brushes as a Reaction Chamber to Fabricate Spiky Gold Nanoparticles
作者：Wenqin Wang*, Hanzhi Zou, Guoke Xing, Mengying Shang, Tao Chen
关键字：polymer brushes, Nanoparticles
论文来源：期刊
具体来源：RSC Advances, 2017, 7, 28024
发表时间：2017年
Using polymer brushes to guide the growth of gold nanostructures is of great scientific and technological importance.We report a new strategy to tune the shape of gold nanoparticles (NPs) on poly(2-vinylpyridine) (P2VP) brushes through vapor deposition polymerization of pyrrole: P2VP brushes loaded with AuCl4 ions were exposed to pyrrole vapor, one-step synthesized gold NPs and conducting polymer polypyrrole (PPy). The spiky gold NPs were obtained by controlling the thickness of P2VP brushes and reaction time, and a possible mechanism was proposed. The as-obtained spiky gold NPs could be used as substrates for surface-enhanced Raman scattering (SERS). They exhibited excellent Raman enhancement performance and the enhancement factor (EF) was in the range (4.0–6.2) 105 when 4-aminothiophenol was used as a probe molecule.