DNA Origami Assembled Nanoantennas for Manipulating Single-Molecule Spectral Emission

作     者：Sanz-Paz, Maria Zhu, Fangjia Bruder, Nicolas Kolataj, Karol Fernandez-Dominguez, Antonio I. Acuna, Guillermo P. 

作者机构：Univ Fribourg Dept Phys CH-1700 Fribourg Switzerland Univ Autonoma Madrid Dept Fis Teor Mat Condensada E-28049 Madrid Spain Univ Autonoma Madrid Condensed Matter Phys Ctr IFIMAC E-28049 Madrid Spain 

出 版 物：《NANO LETTERS》 (纳米快报)

年 卷 期：2023年第23卷第13期

页      面：6202-6208页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：Ministerio de Ciencia e Innovación, MICINN Agencia Estatal de Investigación, AEI, (TED2021-130552B-C22, PID2021-126964OB-I00, Y2020/TCS-6545) National Center of Competence in Research Bio-Inspired Materials, University of Fribourg, (51NF40_182881) , (200021_184687, 184687) European Union’s Horizon Europe Research and Innovation Programme, (101070700) 

主　　题：nanophotonics plasmonics emission spectra single-molecule fluorescence colloidal nanoparticles DNA nanotechnology DNA origami 

摘      要：The emission spectrum of a dye is given by the energyof all ofthe possible radiative transitions weighted by their *** spectrum can be altered with optical nanoantennas that are ableto manipulate the decay rate of nearby emitters by modifying the localdensity of photonic states. Here, we make use of DNA origami to preciselyplace an individual dye at different positions around a gold nanorodand show how this affects the emission spectrum of the dye. In particular,we observe a strong suppression or enhancement of the transitionsto different vibrational levels of the excitonic ground state, dependingon the spectral overlap with the nanorod resonance. This reshapingcan be used to experimentally extract the spectral dependence of theradiative decay rate enhancement. Furthermore, for some cases, weargue that the drastic alteration of the fluorescence spectrum couldarise from the violation of Kasha s rule.