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DNA Origami Nanoantennas for Fluorescence Enhancement
Accounts of Chemical Research ( IF 16.4 ) Pub Date : 2021-08-26 , DOI: 10.1021/acs.accounts.1c00307 Viktorija Glembockyte 1 , Lennart Grabenhorst 1 , Kateryna Trofymchuk 1 , Philip Tinnefeld 1
Accounts of Chemical Research ( IF 16.4 ) Pub Date : 2021-08-26 , DOI: 10.1021/acs.accounts.1c00307 Viktorija Glembockyte 1 , Lennart Grabenhorst 1 , Kateryna Trofymchuk 1 , Philip Tinnefeld 1
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The possibility to increase fluorescence by plasmonic effects in the near-field of metal nanostructures was recognized more than half a century ago. A major challenge, however, was to use this effect because placing single quantum emitters in the nanoscale plasmonic hotspot remained unsolved for a long time. This not only presents a chemical problem but also requires the nanostructure itself to be coaligned with the polarization of the excitation light. Additional difficulties arise from the complex distance dependence of fluorescence emission: in contrast to other surface-enhanced spectroscopies (such as Raman spectroscopy), the emitter should not be placed as close as possible to the metallic nanostructure but rather needs to be at an optimal distance on the order of a few nanometers to avoid undesired quenching effects.
中文翻译：
用于增强荧光的 DNA 折纸纳米天线
半个多世纪以前，人们就认识到在金属纳米结构的近场中通过等离子体效应增加荧光的可能性。然而，一个主要的挑战是利用这种效应，因为在纳米级等离子体热点中放置单个量子发射器在很长一段时间内仍未得到解决。这不仅提出了一个化学问题，而且还需要纳米结构本身与激发光的偏振对齐。荧光发射的复杂距离依赖性带来了额外的困难：与其他表面增强光谱学（如拉曼光谱）相比，发射器不应放置在尽可能靠近金属纳米结构的位置，而是需要处于最佳距离在几纳米的数量级上，以避免不希望的淬火效应。
更新日期：2021-09-07
中文翻译：
用于增强荧光的 DNA 折纸纳米天线
半个多世纪以前，人们就认识到在金属纳米结构的近场中通过等离子体效应增加荧光的可能性。然而，一个主要的挑战是利用这种效应，因为在纳米级等离子体热点中放置单个量子发射器在很长一段时间内仍未得到解决。这不仅提出了一个化学问题，而且还需要纳米结构本身与激发光的偏振对齐。荧光发射的复杂距离依赖性带来了额外的困难：与其他表面增强光谱学（如拉曼光谱）相比，发射器不应放置在尽可能靠近金属纳米结构的位置，而是需要处于最佳距离在几纳米的数量级上，以避免不希望的淬火效应。
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