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Study Findings from I.R. Bunghez et al Broaden Understanding of DNA Research

February 11, 2014



By a News Reporter-Staff News Editor at Life Science Weekly -- Fresh data on DNA Research are presented in a new report. According to news originating from Bucharest, Romania, by NewsRx correspondents, research stated, "A UV-photoirradiation method has been proved for a novel, easy mode for the synthesis of semi-conducting Au-Ag nanowires complex on DNA. The nanowires have average diameters ranging from 2-50 nm in length."

Our news journalists obtained a quote from the research, "During Au-Ag alloy nanowire synthesis, the DNA acts as both as a reducing agent and as a non-specific capping agent for the metal nanoparticles. The Au-Ag alloy nanowires are important for the synthesis of composite nanowires for functional nanodevices, sensors, miniature computers or optoelectronics. In this article is presented the process of obtaining of DNA-gold nanoparticles, DNA-silver nanoparticles and DNA-Au-Ag nanoparticles which were prepared by chemical reduction of DNA- metal (Au and Ag) complex. The DNA-Au (III) was formed by reacting DNA with a 10(-2) M of HAuCl4 solution and the DNA-Ag was formed by reacting DNA with a 10-2 M of an AgNO3 solution. The complex in solution reacted with EDTA reducing Au (III) and Ag (I) to Au and Ag. So, these solutions are responsible for creating nanodimensional aggregates. The particle distributions were obtained by transmission electron microscopy (TEM)."

According to the news editors, the research concluded: "This method, of metallic nanoparticles incorporated and stabilized by DNA, has resulted in a rather uniform dispersion of Ag, Au, Ag-Au nanoparticles of spherical shape and 2 similar to 50 nm in diameter."

For more information on this research see: Photo-induced formation of Au-Ag nanowires complex on DNA support. Journal of Optoelectronics and Advanced Materials, 2013;15(11-12):1380-1384. Journal of Optoelectronics and Advanced Materials can be contacted at: Natl Inst Optoelectronics, 1 Atomistilor St, PO Box Mg-5, Bucharest-Magurele 76900, Romania (see also DNA Research).

The news correspondents report that additional information may be obtained from I.R. Bunghez, SC METAV Res Dev SA, Bucharest, Romania. Additional authors for this research include O. Dumitrescu, E. Vasile, S. Doncea and R.M. Ion.

Keywords for this news article include: Europe, Romania, Nanowire, Bucharest, DNA Research, Nanoparticle, Nanotechnology, Emerging Technologies

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Source: Life Science Weekly


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