Polymer-assisted fabrication of gold nanoring arrays

• Published in: Nano research Vol. 10; no. 10; pp. 3346 - 3357
• Main Authors: Chen, Hongxu, Mu, Shilin, Fang, Liping, Shen, Huaizhong, Zhang, Junhu, Yang, Bai
• Format: Journal Article
• Language: English
• Published: Beijing Tsinghua University Press 01.10.2017; Springer Nature B.V
• Subjects: 4-乙烯基吡啶; Addition polymerization; Arrays; Atomic/Molecular Structure and Spectra; Biomedicine; Biotechnology; Chemistry and Materials Science; Condensed Matter Physics; Electroless deposition; Electroless plating; Fabrication; Gold; Heavy metals; Lithography; Materials Science; Nanoparticles; Nanorods; Nanotechnology; P4VP; Palladium; Parameter modification; Polymers; Pyridines; Research Article; Self-assembly; Substrates; Wavelengths; 制备; 嵌段聚合物; 纳米环; 纳米金; 阵列; 高分子; self-assembly; gold nanorings; colloidal lithography; plasmonic
• ISSN: 1998-0124; 1998-0000
• DOI: 10.1007/s12274-017-1547-x

In this paper, we report a new strategy for the fabrication of gold nanoring arrays via colloidal lithography and polymer-assisted self-assembly of gold nanoparticles （Au NPs）. First, multi-segmented polymer nanorod arrays were fabricated via colloidal lithography. They were then used as templates for Au NP adsorption, which resulted in nanoparticles on the poly（4-vinyl pyridine） （P4VP） segments. Continuous gold nanorings were formed after electroless deposition of gold. The diameter, quantity, and spacing of the gold nanorings could be tuned. Three dimensional coaxial gold nanorings with varying diameters could be fabricated on a polymer nanorod by modifying the etch parameters. The nanorings exhibited optical plasmonic resonances at theoretically predicted wavelengths. In addition, the polymer-assisted gold nanorings were released from the substrate to generate a high yield of flee-standing nanorings. This simple, versatile method was also used to prepare nanorings from other metals such as palladium.