Tunable Polymer Brush/Au NPs hybrid Plasmonic Arrays Based on Host–Guest Interaction.
writer：Liping Fang, Yunfeng Li, Zhaolai Chen, Wendong Liu, Junhu Zhang, Siyuan Xiang, Huaizhong Shen, Z
keywords：gold nanoparticle arrays, host?guest interaction, tunable optical properties, hybrid, colloid lithography, polymer brush
source：期刊
specific source：ACS Appl. Mater. Interfaces
Issue time：2014年
The fabrication of versatile gold nanoparticle
(Au NP) arrays with tunable optical properties by a novel
host?guest interaction are presented. The gold nanoparticles
were incorporated into polymer brushes by host?guest
interaction between β-cyclodextrin (β-CD) ligand of gold
nanoparticles and dimethylamino group of poly(2-
(dimethylamino)ethyl methacrylate) (PDMAEMA). The
gold nanoparticle arrays were prepared through the template
of PDMAEMA brush patterns which were fabricated
combining colloidal lithography and surface-initiated atom-
transfer radical polymerization (SI-ATRP). The structure
parameters of gold nanoparticle patterns mediated by polymer
brushes such as height, diameters, periods and distances, could be easily tuned by tailoring the etching time or size of colloidal
spheres in the process of colloidal lithography. The change of optical properties induced by di?erent gold nanoparticle structures
was demonstrated. The direct utilization of PDMAEMA brushes as guest avoids a series of complicated modi?cation process and
the PDMAEMA brushes can be grafted on various substrates, which broaden its applications. The prepared gold naoparticle
arrays are promising in applications of nanosensors, memory storage and surface enhanced spectroscopy.