Effects of DNA on Gold Nanoparticle Synthesis Using Gas-Liquid Interfacial Pulse Discharge Plasma
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- Chen Qiang
- Department of Electronic Engineering, Tohoku University
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- Kaneko Toshiro
- Department of Electronic Engineering, Tohoku University CREST/JST
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- Hatakeyama Rikizo
- Department of Electronic Engineering, Tohoku University
Abstract
A gas-liquid interfacial discharge plasma is used for the DNA-associated synthesis of water-soluble gold nanoparticles (AuNPs) by reducing Au ions in aqueous chloroauric acid trihydrate. The plasma is generated by a pulse power source, which can avoid the instability of DC discharges at high pressures. The high discharge current (～ampere) offers a basis for the high rate synthesis of AuNPs. Single-stranded DNA is used as a stabilizing agent since the DNA molecules can be bound to the Au surface. The AuNP size and morphology can be tuned by the DNA concentration. The ability of DNA for stabilizing AuNPs is found to decrease with increasing the DNA length. We also synthesize AuNPs associated with different-base DNA consisting of guanine, adenine, cytosine, and thymine (denoted as dG30, dA30, dC30, and dT30). It is found that dG30 and dA30 have the stronger stabilizing ability for AuNPs than dT30 and dC30 by comparing the intensities of surface plasmon resonance (SPR) peaks of AuNPs after extracting them from as-synthesized samples by centrifugation.
Journal
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- Transactions of the Materials Research Society of Japan
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Transactions of the Materials Research Society of Japan 36 (3), 483-485, 2011
The Materials Research Society of Japan
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Details 詳細情報について
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- CRID
- 1390282680489465600
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- NII Article ID
- 130003399002
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- COI
- 1:CAS:528:DC%2BC3MXhtl2iurvE
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- ISSN
- 21881650
- 13823469
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed