| It is of particular interest in plasmonics to achieve a detailed understanding of molecule metal-nanoparticle (MNP) interactions and MNP affected transport and optical properties. To attain this goal a microscopic theory is introduced which accounts for different types of MNP plasmon excitations (multipole surface plasmons for spherical MNP) and a related energy exchange coupling to the molecules. First applications of this approach based on parameterized models are presented. A MNP affected intermolecular excitation energy transfer is considered. Then, emission, absorption, and transient absorption spectra of molecular complexes placed in the proximity of a spherical MNP are presented. Finally, a plasmon enhanced photoinduced switch of the current through a molecular junction is proposed. |
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