Plexcitonic nanoparticles: plasmon-exciton coupling in nanoshell-J-aggregate complexes.
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.
Fofang
Nche T
NT
Department of Electrical and Computer Engineering, Laboratory for Nanophotonics, Rice University, 6100 Main Street, Houston, Texas 77005, USA.
Park
Tae-Ho
TH
Neumann
Oara
O
Mirin
Nikolay A
NA
Nordlander
Peter
P
Halas
Naomi J
NJ
D000327:Adsorption; D004396:Coloring Agents / Q000494:pharmacology; D003460:Crystallization; D004574:Electromagnetic Fields; D006046:Gold / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D053768:Metal Nanoparticles / Q000737:chemistry*; D015233:Models, Statistical; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D017785:Photons; D013059:Spectrum Analysis, Raman / Q000379:methods; D020349:Surface Plasmon Resonance; D013499:Surface Properties
D004396:Coloring Agents; D006046:Gold