金纳米棒作为液态晶 DNA 基质中的多功能探针。
Gold nanorods as multifunctional probes in a liquid crystalline DNA matrix.
机构信息
Wroclaw University of Technology, Institute of Physical and Theoretical Chemistry, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland.
出版信息
Nanoscale. 2013 Nov 21;5(22):10975-81. doi: 10.1039/c3nr03319h. Epub 2013 Sep 24.
PMID:24065150
Abstract
We show how a single gold nanorod can serve as a multifunctional probe in an organized DNA matrix. Polarization analysis of two-photon luminescence excited with a femtosecond laser enables imaging of the orientation of a single nanorod, which reports the orientation of DNA strands. Carefully controlled photoinduced heating by the same laser is able to degrade the DNA matrix in a highly localized volume.
摘要
我们展示了如何在组织化的 DNA 基质中，将单个金纳米棒用作多功能探针。使用飞秒激光激发的双光子荧光的偏振分析能够对单个纳米棒的取向进行成像，从而报告 DNA 链的取向。通过同一激光进行的精心控制的光致热可以在高度局域化的体积中降解 DNA 基质。
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