Issue 26, 2011
From the journal:

Journal of Materials Chemistry

DNA-based fabrication of density-controlled vertically aligned ZnO nanorod arrays and their SERS applications†

Lanlan Sun,a   Dongxu Zhao,*a   Zhenzhong Zhang,a   Binghui Lia  and  Dezhen Shena  

* Corresponding authors

a Key Laboratory of Excited State Processes, Chinese Academy of Sciences, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 16 East Nan-Hu Road, Open Economic Zone, Changchun, People's Republic of China
E-mail: dxzhao2000@yahoo.com.cn
Fax: +86-431-4627031
Tel: +86-431-86176322

Abstract

We described a novel seeded synthesis of vertically aligned ZnO nanorod arrays on a DNA network surface. Zinc ions were first adsorbed onto the DNA network and then heated to yield layers of ZnO seeds. The DNA network plays an important role not only as a substrate for the adsorbing of zinc ions, but also as a fine template for density controllable synthesis of high-quality ZnO seeds. The density of ZnO seeds was controlled by the adsorption times of zinc ions. The final density of ZnO nanorods was determined mainly by that of ZnO seeds. The ZnO nanorod arrays were used as templates for making silver-coated ZnO nanocomposites, which were applied as substrates in surface-enhanced Raman scattering (SERS) measurements. Two typical probe molecules, R6G and 4-ATP were used to test the SERS activity of the ZnO/Ag composites and the results indicated good Raman activity on the substrate.

Graphical abstract: DNA-based fabrication of density-controlled vertically aligned ZnO nanorod arrays and their SERS applications

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Article information

DOI
https://doi.org/10.1039/C1JM10830A
Article type
Paper
Submitted
25 Feb 2011
Accepted
05 Apr 2011
First published
17 May 2011

J. Mater. Chem., 2011,21, 9674-9681

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DNA-based fabrication of density-controlled vertically aligned ZnO nanorod arrays and their SERS applications

L. Sun, D. Zhao, Z. Zhang, B. Li and D. Shen, J. Mater. Chem., 2011, 21, 9674 DOI: 10.1039/C1JM10830A

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