Catalysis Letters

, Volume 139, Issue 3, pp 145–150

Catalytic Performance of Ag Nanoparticles Templated by Polymorphic DNA

  • Lin Zheng
  • Ruichao Zhang
  • Yuxiang Ni
  • Qian Du
  • Xian Wang
  • Jinli Zhang
  • Wei Li
Article

DOI: 10.1007/s10562-010-0419-8

Cite this article as:
Zheng, L., Zhang, R., Ni, Y. et al. Catal Lett (2010) 139: 145. doi:10.1007/s10562-010-0419-8

Abstract

This study describes the synthesis of Ag nanoparticles using DNA templates with polymorphic structures including the G-quadruplex, the I-motif, and the Duplex and their application for the catalytic reduction of 4-nitrophenol by NaBH4. Interactions between Ag+ and polymorphic DNA were studied through circular dichroism, polyacrylamide gels, and UV spectroscopy. Ag nanoparticles with narrow size distributions were prepared through the reduction of Ag+ by NaBH4 under different DNA templates and Ag+/base ratios. These DNA-templated Ag nanoparticles demonstrated excellent catalytic performance in the reduction reaction of 4-nitrophenol. The rate constants depended on the structure of DNA template, with the decreasing order: I-motif-Ag > G-quadruplex-Ag > Duplex-Ag. The results obtained here suggest a promising pathway to adjust physical–chemical properties of metal nanoparticles through the template of polymorphic DNA.

Graphical Abstract

https://static-content.springer.com/image/art%3A10.1007%2Fs10562-010-0419-8/MediaObjects/10562_2010_419_Figa_HTML.gif

Keywords

DNA-templatedG-quadruplexI-motifAg Nanoparticles4-nitrophenol

Supplementary material

10562_2010_419_MOESM1_ESM.doc (6.7 mb)
Supplementary material 1 (DOC 6897 kb)

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Lin Zheng
    • 1
  • Ruichao Zhang
    • 1
  • Yuxiang Ni
    • 1
  • Qian Du
    • 1
  • Xian Wang
    • 1
  • Jinli Zhang
    • 1
  • Wei Li
    • 1
  1. 1.School of Chemical Engineering & TechnologyTianjin UniversityTianjinChina