Assembly of hybrid oligonucleotide modified gold (Au) and alloy nanoparticles building blocks

Yu Ching Kuo, Chun Ping Jen, Yu Hung Chen, Chia Hao Su, Shu Hui Tsai, Chen Sheng Yeh

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

The alloy-based hybrid materials with macroscopic network arrays were developed by AuAg/Au and AuAgPd/Au nanoparticle composites through oligonucleotides hybridization. AuAg/Au and AuAgPd/Au exhibited distinct organization. The morphology of AuAg/Au conjugation assembled mainly as compact aggregates while AuAgPd/Au hybrid conjugated into the loosen network assemblies. The dehybridization temperatures were studied as a function of molar ratio of alloy/Au. It was found that higher alloy/gold molar ratio led to stronger hybridization for alloy/gold composite, accompanied with increased melting temperature. These results could be interpreted in terms of more alloy nanoparticles bound to a Au particle when the molar ratio of alloy/gold increased. The thermal analysis also showed that AuAg/Au exhibited higher dehybridization temperature. A modified model describing the dehybridization probability of an intact Au/alloy aggregate was performed to support the dehybridization temperature increased with increasing alloy/Au molar ratio. As to more oligonucleotides carried by AuAg (4.9 ± 1.9 nm) than by AuAgPd (4.4 ±1.5 nm) due to larger size in AuAg, the efficient hybridization could result in higher dehybridization temperature in AuAg/Au.

原文English
頁(從 - 到)95-100
頁數6
期刊Journal of Nanoscience and Nanotechnology
6
發行號1
出版狀態Published - 2006 一月

All Science Journal Classification (ASJC) codes

  • 生物工程
  • 化學 (全部)
  • 生物醫學工程
  • 材料科學(全部)
  • 凝聚態物理學

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