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Effect of plasmid DNA dimension evolution on the size of ag nanoparticles during photoirradiation

  • Beihang University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Under the photoirradiation, DNA works as both template and reducing agent to drive the formation of metallic nanomaterials. In this study the plasmid DNA with different base pairs was applied as biotemplate to synthesize Ag nanoparticles (NPs) by using photoirradiation approach. The evolution of DNA dimension changed during the synthesis process, and their effect on the morphology of the synthesized Ag NPs was studied by UV-Vis spectra, FT-IR spectra, Raman spectra, AFM, and TEM. It is found that the plasmid DNA shrinked twice during the synthesis, the first time happened when the Ag(I) cations neutralized the negative charge along the DNA chain, and the second time happened when plasmid DNA reduced Ag(I) induced by the ultraviolet C (254 nm) irradiation. The size of the synthesized Ag NPs showed approximately linear relationship with the dimension of plasmid DNA scaffolds under this photo-induce condition. The compaction degree of the plasmid DNA during the Ag formation was shown by the slope of the linear relationship.

Original languageEnglish
Title of host publicationMaterials and Technologies for Energy Supply and Environmental Engineering
EditorsYafang Han, Ying Wu, Runhua Fan, Xuefeng Liu, Guangxian Li, Fusheng Pan, Fusheng Pan, Fusheng Pan
PublisherTrans Tech Publications Ltd
Pages194-199
Number of pages6
ISBN (Print)9783038356561
DOIs
StatePublished - 2016
EventChinese Materials Conference on Materials and Technologies for Energy Supply and Environmental Engineering, 2015 - Guiyang, China
Duration: 10 Jul 201514 Jul 2015

Publication series

NameMaterials Science Forum
Volume847
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

ConferenceChinese Materials Conference on Materials and Technologies for Energy Supply and Environmental Engineering, 2015
Country/TerritoryChina
CityGuiyang
Period10/07/1514/07/15

Keywords

  • Ag nanoparticles
  • Biotemplate
  • Metallization
  • Photoirradiation
  • Plasmid DNA

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