Strong Plasmon Enhancement of the Saturation Photon Count Rate of Single Molecules.
作者： Yuyang Wang , Matěj Horáček , Peter Zijlstra , None
DOI: 10.1021/ACS.JPCLETT.0C00155
关键词:
摘要: Plasmon resonances have appeared as a promising method to boost the fluorescence intensity of single emitters. However, because research has focused on enhancement at low excitation intensity, little is known about plasmon-fluorophore coupling near point where dye saturates. Here we study plasmon-enhanced broad range intensities up saturation. We adopt novel DNA-mediated approach wherein dynamic single-molecule binding provides controlled particle-fluorophore spacing, and rebinding circumvents artifacts due photobleaching. find that saturation maximum photon count rate enhanced by more than 2 orders magnitude optimal even for with high intrinsic quantum yield. compare our results numerical model taking into account These experiments provide design rules maximize output emitters, which will open door studying fast dynamics in real time using fluorescence.
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