Molecular Plasmonics with Tunable Exciton-Plasmon Coupling Strength in J-Aggregate Hybridized Au Nanorod Assemblies

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• 作者：Gregory A. Wurtz ; Paul R. Evans ; William Hendren ; Ronald Atkinson ; Wayne Dickson ; Robert J. Pollard ; Anatoly V. Zayats ; William Harrison ; Christopher Bower
• 刊名：Nano Letters
• 出版年：2007
• 出版时间：May 2007
• 年：2007
• 卷：7
• 期：5
• 页码：1297 - 1303
• 全文大小：269K
• 年卷期：v.7,no.5(May 2007)
• ISSN：1530-6992

文摘

Controlling coherent electromagnetic interactions in molecular systems is a problem of both fundamental interest and important applicativepotential in the development of photonic and opto-electronic devices. The strength of these interactions determines both the absorption andemission properties of molecules coupled to nanostructures, effectively governing the optical properties of such a composite metamaterial.Here we report on the observation of strong coupling between a plasmon supported by an assembly of oriented gold nanorods (ANR) and amolecular exciton. We show that the coupling is easily engineered and is deterministic as both spatial and spectral overlap between theplasmonic structure and molecular aggregates are controlled. We think that these results in conjunction with the flexible geometry of the ANRare of potential significance to the development of plasmonic molecular devices.