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相关概念视频

DNA Agarose Gel Electrophoresis02:35

DNA Agarose Gel Electrophoresis

Agarose gel electrophoresis is a laboratory technique commonly used to separate DNA fragments by size. However, it can also be used to isolate and purify DNA fragments using a gel extraction protocol.
Gel extraction follows five major steps: running gel electrophoresis to separate fragments, isolating the individual bands, extracting DNA from those bands, and removing the dye and salts from the extracted mixture to obtain pure DNA.
In cloning experiments, both the insert and vector DNA...

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相关实验视频

Updated: Jul 26, 2026

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles
10:23

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles

Published on: May 8, 2015

DNA模板的Ag纳米集群的形成.

Jeffrey T Petty1, Jie Zheng, Nicholas V Hud

  • 1School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400 USA. jeff.petty@furman.edu

Journal of the American Chemical Society
|April 22, 2004
PubMed
概括

研究人员使用银离子 (Ag+) 在DNA中创建了银纳米集群. 这些集群,从Ag1到Ag4,表现出独特的光学特性,并随着时间的推移形成,证明了纳米粒子合成的新方法.

科学领域:

  • 纳米材料科学 科学 纳米材料科学
  • 生物化学 生物化学
  • 频谱学是一种光谱学.

背景情况:

  • 银离子 (Ag+) 对DNA基具有很高的亲和力.
  • 控制纳米粒子大小对于应用至关重要.
  • 寡核酸封装为稳定的纳米集群提供了一条途径.

研究的目的:

  • 为了研究由短的寡核酸封装的银纳米集群的形成.
  • 描述纳米集群形成的尺寸,光学特性和动力学.
  • 为了确认纳米集群与DNA模板的关联.

主要方法:

  • 银纳米集群的合成使用Ag+和短的寡核酸.
  • 时间分辨率的UV-Vis吸收光谱 (400-600 nm).
  • 诱导循环二重化 (ICD) 光谱学.诱导循环二重化 (ICD) 光谱.
  • 光学,质谱学和核磁共振 (NMR) 光谱学.

主要成果:

  • 在没有大型纳米粒子聚合的情况下,每个寡核酸形成离散的银纳米集群 (Ag1-Ag4).
  • 在12小时内观察时间依赖的电子转换 (400-600 nm).
  • ICD带证实了纳米集群与合性SS-DNA模板的关联.

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DNA Origami-Mediated Substrate Nanopatterning of Inorganic Structures for Sensing Applications
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DNA Origami-Mediated Substrate Nanopatterning of Inorganic Structures for Sensing Applications

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Last Updated: Jul 26, 2026

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles
10:23

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles

Published on: May 8, 2015

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules
09:32

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules

Published on: April 12, 2019

DNA Origami-Mediated Substrate Nanopatterning of Inorganic Structures for Sensing Applications
08:59

DNA Origami-Mediated Substrate Nanopatterning of Inorganic Structures for Sensing Applications

Published on: September 27, 2019

  • 光谱数据表明存在多种物种,这取决于核酸序列和时间.

    • 结论:

    • 聚核酸封装的银纳米集群可以用受控的大小合成.
    • 形成过程是动力控制的,并表现出时间依赖的光谱演变.
    • 结果突出了DNA模板银纳米集群在光学应用中的潜力.