The localized surface plasmon resonance (LSPR) of metal nanoparticles is sensitive to molecules/nanoparticles in the proximity. In Ag nanosphere dimers and trimers, the LSPR spectra significantly differ from that of the single Ag nanospheres by correlated structural and optical studies. The additional peaks in the LSPR spectra of Ag nanosphere dimers and trimers are attributed to the coupling between the nanoparticles and they depend on the polarization of the incident light. In the case when colloidal quantum dots adsorb onto single metal nanoparticles, the LSPR spectra of the nanocomplexes shifts in wavelength and changes in the lineshape compared to single metal nanoparticles. The strong exciton-plasmon interaction results in dips in the LSPR lineshape of nanocomplexes.

Plasmon and exciton interaction in metal nanoparticles and quantum dots complexes

247th National Meeting (2014)

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