Self-Assembled DNA-Based Fluorescence Waveguide with Selectable Output
Self-Assembled DNA-Based Fluorescence Waveguide with Selectable Output
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DOI：
10.1002/smll.201101144
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发表时间：
2011-11-18
期刊：
影响因子：
13.3
通讯作者：
Albinsson, Bo
中科院分区：
文献类型：
--
作者：
Hannestad, Jonas K.;Gerrard, Simon R.;Albinsson, Bo
利用自组装原理，构建了一个具有一个输入和两个空间和光谱不同输出的荧光光子网络。六角形DNA纳米组装被用作输入和输出染料的支架。使用DNA来承载官能团可以在单碱基对的水平上实现空间分辨率，远远低于光的波长。输入和输出染料之间的通讯是通过激发能量转移来实现的。输出选择是通过在DNA碱基对之间添加介体染料来实现的，通过能量跳跃将激发能量从输入传递到输出。这创造了一种通过光谱和空间控制在纳米尺度上进行选择性激发能量转移的工具。在纳米尺度上以受控的方式引导激发能量的能力对于将光化学过程纳入纳米技术是重要的。
Using the principle of self-assembly, a fluorescence-based photonic network is constructed with one input and two spatially and spectrally distinct outputs. A hexagonal DNA nanoassembly is used as a scaffold to host both the input and output dyes. The use of DNA to host functional groups enables spatial resolution on the level of single base pairs, well below the wavelength of light. Communication between the input and output dyes is achieved through excitation energy transfer. Output selection is achieved by the addition of a mediator dye intercalating between the DNA base pairs transferring the excitation energy from input to output through energy hopping. This creates a tool for selective excitation energy transfer on the nanometer scale with spectral and spatial control. The ability to direct excitation energy in a controlled way on the nanometer scale is important for the incorporation of photochemical processes in nanotechnology.