title: Excitation energy-transfer in functionalized nanoparticles: Going beyond the Förster approach.
abstract: We develop a novel approach to treat excitation energy transfer in hybrid nanosystems composed by an organic molecule attached to a semiconductor nanoparticle. Our approach extends the customary Förster theory by considering interaction between transition multipole moments of the nanoparticle at all orders and a point-like transition dipole moment representing the molecule. Optical excitations of the nanoparticle are described through an envelope-function configuration interaction method for a single electron-hole pair. We applied the method to the prototypical case of a core/shell CdSe/ZnS semiconductor quantum dot which shows a complete suppression of the energy transfer for specific transitions which could not be captured by Förster theory.
authors.affiliation: Center S3, CNR Institute of Nanosciences, Modena, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Gil
authors.affiliation: Center S3, CNR Institute of Nanosciences, Modena, Italy.
authors.forename: S
authors.initials: S
authors.lastname: Corni
authors.affiliation: Center S3, CNR Institute of Nanosciences, Modena, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Delgado
authors.affiliation: Center S3, CNR Institute of Nanosciences, Modena, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Bertoni
authors.affiliation: Center S3, CNR Institute of Nanosciences, Modena, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Goldoni