作者：Liping Fang, Xueyao Liu, Siyuan Xiang, Wendong Liu, Huaizhong Shen, Zibo Li, Kai Zhang, Wei Song,
关键字：nanoparticle cluster arrays, tunable particle numbers, large-scale, colloid lithography, polymer, controllable self-assembly
论文来源：期刊
具体来源：Nanotechnology
发表时间：2018年

The assembly of metal nanoparticles (NPs) can regulate their plasmon resonance properties to

pursue the best properties for applications. However, the controllable assembly of large-scale

metal NP cluster arrays remains a signi?cant challenge. This paper presents a novel strategy to

prepare large-scale Au NP cluster arrays based on colloidal lithography and template-guided

self-assembly technique. The NPs arrays are fabricated by introducing Au NPs onto the

quaternized poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) brush templates via

electrostatic interaction. The number of Au NPs in cluster can be arbitrarily tuned by changing

the surface area of the polymer templates created by colloidal lithography, which resulted in

tunable plasmonic properties. The prepared Au NP cluster arrays were used for surface enhanced

Raman scattering (SERS) and the SERS properties of the Au NP cluster arrays were studied.