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Berlin 2012 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 8: Poster: Nanoparticles and Composite Materials

CPP 8.9: Poster

Monday, March 26, 2012, 17:30–20:00, Poster A

Metal nanoparticle affected molecular emission: A density matrix approach — •Yuan Zhang1,2, Yaroslav Zelinskyy1, and Volkhard May11Institut 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).

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