DNA 诱导高纯度金纳米双锥的强烈等离子体圆二色性。
DNA induced intense plasmonic circular dichroism of highly purified gold nanobipyramids.
机构信息
Laboratory of Nanomaterials, National Center for Nanoscience and Technology, Beiyitiao No. 11, Zhongguancun, Beijing, P. R. China.
出版信息
Nanoscale. 2014 May 7;6(9):4498-502. doi: 10.1039/c4nr00166d.
We report a strong and reversible CD response through the assembly of helical DNA and Au nanobipyramids (Au NBPs). Compared with common spherical Au nanoparticles or anisotropic Au nanorods, highly purified Au NBPs possess a more intense electromagnetic field and improved surface plasmon resonance. Thus, the assembly of DNA and Au NBPs exhibits an obviously enhanced plasmonic CD response. When the plasmonic CD is used for DNA detection, it shows high sensitivity and good reproducibility.
我们通过组装螺旋 DNA 和金纳米双锥（Au NBPs）报告了一个强而可逆的圆二色（CD）响应。与常见的球形 Au 纳米颗粒或各向异性的 Au 纳米棒相比，高纯度的 Au NBPs 具有更强的电磁场和改进的表面等离子体共振。因此，DNA 和 Au NBPs 的组装表现出明显增强的等离子体 CD 响应。当等离子体 CD 用于 DNA 检测时，它表现出高灵敏度和良好的重现性。
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