Plexcitonic Nanoparticles: Plasmon-Exciton Coupling in Nanoshell-J-Aggregate Complexes
Plexcitonic Nanoparticles: Plasmon-Exciton Coupling in Nanoshell-J-Aggregate Complexes
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DOI：
10.1021/nl8024278
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发表时间：
2008-10-01
期刊：
影响因子：
10.8
通讯作者：
Halas, Naomi J.
中科院分区：
文献类型：
--
作者：
Fofang, Nche T.;Park, Tae-Ho;Halas, Naomi J.
形成稳定的Au纳米壳-J-聚集体复合物，其表现出纳米壳的局域等离子体激元与吸附在其表面上的分子J-聚集体的激子之间的相干耦合。通过调整纳米壳层等离子体激元能量的激子线的J-聚集体，等离子体激子耦合能量为这些复合物。这种相互作用的强度取决于耦合到J聚集体激子的纳米颗粒的特定等离子体激元模式。从一个基于Gans理论的模型，我们得到了该复合物的等离子激元-激子杂化态的表达式。
Stable Au nanoshell-J-aggregate complexes are formed that exhibit coherent coupling between the localized plasmons of a nanoshell and the excitons of molecular J-aggregates adsorbed on its surface. By tuning the nanoshell plasmon energies across the exciton line of the J-aggregate, plasmon-exciton coupling energies for these complexes are obtained. The strength of this interaction is dependent on the specific plasmon mode of the nanoparticle coupled to the J-aggregate exciton. From a model based on Gans theory, we obtain an expression for the plasmon-exciton hybridized states of the complex.