2010
DOI: 10.1007/s10562-010-0419-8
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Catalytic Performance of Ag Nanoparticles Templated by Polymorphic DNA

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 NaBH 4 . 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 NaBH 4 under different DNA templates and Ag ? /base r… Show more

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Cited by 19 publications
(16 citation statements)
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“…For example, Au NPs could be assembled into 3D architectures including stacked rings, single spirals, double spirals, and nested spirals through the interaction between NPs and DNA (Fig. Zheng et al 236 investigated the influence of DNA structure and Ag(I)/base ratios on the size of as-prepared Ag NPs. 261 Conjugation of Au NP with a single DNA strand incorporated Au NPs into a planar DNA tile array, with the tendency to form the DNA tube because of the systematic steric and electrostatic repulsion effects.…”
Section: Dna-templated Synthesismentioning
confidence: 99%
See 1 more Smart Citation
“…For example, Au NPs could be assembled into 3D architectures including stacked rings, single spirals, double spirals, and nested spirals through the interaction between NPs and DNA (Fig. Zheng et al 236 investigated the influence of DNA structure and Ag(I)/base ratios on the size of as-prepared Ag NPs. 261 Conjugation of Au NP with a single DNA strand incorporated Au NPs into a planar DNA tile array, with the tendency to form the DNA tube because of the systematic steric and electrostatic repulsion effects.…”
Section: Dna-templated Synthesismentioning
confidence: 99%
“…Zheng et al 236 prepared well dispersed Ag NPs with very small size using three different DNA templates with polymorphic structures. In addition to the typical Watson-Crick duplex conformation, there were a variety of structures like G-quadruplex, I-motif, and other DNA assembled superstructures via base pairing interactions.…”
Section: Catalysismentioning
confidence: 99%
“…Such devices utilize Ag nanostructures for the improved performances, i.e., enhanced scattering and absorption of light, high electrical conductivity, and enhanced sensitivity due to the strong surface plasmon resonance exhibited by the Ag nanostructures [ 7 9 ]. Furthermore, the large surface-to-volume ratio, selective binding, and detection with specific target enable Ag nanostructures to be applicable as the catalysis as well as the chemical and biological sensors [ 5 , 10 13 ]. In specific, the increased photocurrent density due to the high electromagnetic field strength in the vicinity of excited surface plasmons can enhance the power conversion efficiency of organic solar cells [ 14 ].…”
Section: Introductionmentioning
confidence: 99%
“…This demand stems from unique size-dependent optical, electronic, catalytic and antimicrobial properties of AgNPs, which have novel applications in diverse areas like signal enhancement [1][2][3], catalysis [4][5], biological imaging and therapy [6][7]. Over the past two decades, reverse micelles (or microemulsions) have served as a popular templates for the synthesis of size-controlled AgNPs [8][9][10][11][12].…”
Section: Introductionmentioning
confidence: 99%
“…AA is a naturally occurring biological compound having mild reducing character and good solubility in water, but is generally considered as too weak to reduce silver (or gold) salt at room temperature [23][24][25]. 5 However, AA becomes effective at elevated temperature [26], or in the presence of a catalyst.…”
Section: Introductionmentioning
confidence: 99%