title: Sandwich-like layer-by-layer assembly of gold nanoparticles with tunable SERS properties.
abstract: Sandwich-like layer-by-layer thin films consisting of polyelectrolytes and gold nanoparticles were utilized to construct surface-enhanced Raman scattering (SERS) substrates with tunable SERS properties. It is found that both the size of the nanoparticles in the layers and the interlayer distance significantly influence the SERS performance of the multilayered thin film. These simple, low-cost, easily processable and controllable SERS substrates have a promising future in the field of molecular sensing.
authors.affiliation: Shanxi Province Key Laboratory of Functional Nanocomposites, School of Materials Science and Engineering, North University of China, Taiyuan 030051, China.
authors.forename: Zhicheng
authors.initials: Z
authors.lastname: Liu
authors.affiliation: School of Chemical and Environmental Engineering, North University of China, Taiyuan 030051, China.
authors.forename: Lu
authors.initials: L
authors.lastname: Bai
authors.affiliation: Shanxi Province Key Laboratory of Functional Nanocomposites, School of Materials Science and Engineering, North University of China, Taiyuan 030051, China.
authors.forename: Guizhe
authors.initials: G
authors.lastname: Zhao
authors.affiliation: Shanxi Province Key Laboratory of Functional Nanocomposites, School of Materials Science and Engineering, North University of China, Taiyuan 030051, China.
authors.forename: Yaqing
authors.initials: Y
authors.lastname: Liu
keywords: assembly; layer-by-layer; multilayer thin film; nanoparticle; polyelectrolyte