writer：Lihua Feng, Ke Wang, Ping Li, Wenqin Wang*, and Tao Chen*
keywords：polymer brushes, GO, Au Nanostructure
source：期刊
specific source：New J. Chem., 2018, 42, 17016-17020
Issue time：2018年
Control growth of noble metal micro/nanostructures on graphene films is of crucial importance for
high-quality surface-enhanced Raman scattering (SERS) spectra. In this paper, we described in situ fabrication of different Au structures on poly(4-vinylpyridine)(P4VP) brushes-grafted graphene oxide(GO). The proposed strategy is based on the use of HAuCl4-loaded P4VP brushes grown on GO as a reaction chamber. The novel Au mesostructures with “fried egg-like” morphology were fabricated on the surface of the GO-P4VP films using ascorbic acid (AA) as a weaker reducing agent. The obtained GO-P4VP/fried egg-like Au composites can be used as substrates for surface-enhanced Raman scattering (SERS) and exhibited good SERS sensitivity for detecting 4-aminothiophenol (4-ATP) molecules.