Polymer-assisted fabrication of gold nanoring arrays
- 255 Downloads
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 free-standing nanorings. This simple, versatile method was also used to prepare nanorings from other metals such as palladium.
Keywordsgold nanorings colloidal lithography self-assembly plasmonic
Unable to display preview. Download preview PDF.
This work was supported by the National Natural Science Foundation of China (No. 21474037) and Doctoral Fund of Ministry of Education of China (No. 20130061110019).
- Xue, C.; Mirkin, C. A. pH-switchable silver nanoprism growth pathways. Angew. Chem., Int. Ed. 2007, 46, 2036–2038.Google Scholar
- Mirkin, C. A.; Letsinger, R. L.; Mucic, R. C.; Storhoff, J. J. A DNA-based method for rationally assembling nanoparticles into macroscopic materials. Nature 1996, 382, 607–609.Google Scholar
- Li, Z. B.; Nan, J. J.; Zhang, X. M.; Ye, S. S.; Shen, H. Z.; Wang, S. L.; Fang, L. P.; Xue, P. H.; Zhang, J. H.; Yang, B. Modulate the morphology and spectroscopic property of gold nanoparticle arrays by polymer-assisted thermal treatment. J. Phys. Chem. C 2015, 119, 11839-11845.CrossRefGoogle Scholar
- Brown, K. R.; Lyon, L. A.; Fox, A. P.; Reiss, B. D.; Natan, M. J. Hydroxylamine seeding of colloidal Au nanoparticles. 3. Controlled formation of conductive Au films. Chem. Mater. 2000, 12, 314–323.Google Scholar