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首页> 外文期刊>Physical review >Modulation Of Local Plasmon Mediated Emission Through Molecular Manipulation
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Modulation Of Local Plasmon Mediated Emission Through Molecular Manipulation

机译:通过分子操纵调节局部等离子体介导的发射。

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We use single molecular manipulation to investigate the modulation effect of adsorbed molecules on local plasmon mediated emission (LPME) from the Au surface. Tunneling electron excited luminescence spectra indicate an overall suppression of LPME when an intact or excised CoOEP molecule is inserted into the junction. However, the LPME for the excised molecule is found to be stronger than that of the intact molecule, somewhat unexpected for a slightly larger molecule-substrate separation. We attribute such enhancement to a competing result of three different kinds of roles an adsorbed molecule can play in LPME: a geometric dielectric spacer, an energy dissipater, and a dynamic dipole oscillator.
机译:我们使用单分子操作来研究吸附的分子对Au表面局部等离激元介导的发射(LPME)的调节作用。隧道电子激发的发光光谱表明,将完整或切除的CoOEP分子插入连接处时,LPME的总体抑制作用。但是,发现被切除的分子的LPME比完整分子的LPME强,对于稍大的分子与底物的分离有些出乎意料。我们将这种增强归因于被吸附分子在LPME中可以发挥的三种不同作用的竞争结果:几何介电间隔物,能量耗散剂和动态偶极子振荡器。

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