Berlin 2012 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 8: Poster: Nanoparticles and Composite Materials
CPP 8.9: Poster
Montag, 26. März 2012, 17:30–20:00, Poster A
Metal nanoparticle affected molecular emission: A density matrix approach — •Yuan Zhang1,2, Yaroslav Zelinskyy1, and Volkhard May1 — 1Institut für Physik, Humboldt Universität zu Berlin, Newtonstraße 15, D–12489 Berlin, Germany — 2University of Science and Technology Beijing, XueYuan Road 30, 100083 Beijing, P. R. China
To compute the emission spectrum of a molecule metal nanoparticle complex a full quantum mechanical
description of the system is presented. Based on a density matrix approach the computation
accounts for intramolecular vibrational relaxation,
nanoparticle plasmon damping, coupling to the photon field, and a non–perturbative consideration of
the molecule nanoparticle interaction [1]. The latter is responsible for a remarkable plasmon
induced decrease of the molecular radiative life–time. We investigate this life–time shorting in
its effect on the time– and frequency resolved emission spectrum of the molecule nanoparticle
complex. By including optical excitation of the system transient and steady–state spectra are
presented.
[1] Y. Zelinskyy and V. May, Chem. Phys. Lett. 511, 372 (2011).