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Accueil du site > Pôles > Nord & Ile de France > Offres de Stages > M2 Internship at Université de Paris : Toward the Optical Property Modeling of Plasmon-like Hybrid Organic/Inorganic Systems

M2 Internship at Université de Paris : Toward the Optical Property Modeling of Plasmon-like Hybrid Organic/Inorganic Systems

par Nord & Ile de France - 7 octobre

ABSTRACT Noble metal nanoparticles are the seat of surface plasmon resonance (SPR). At the metal-dielectric interface, the electrons of the conduction band are able to enter in collective oscillations (plasmon) in response to an applied electromagnetic field leading to extraordinary optical properties. When organic chromophores are positioned in the close vicinity of the nanoparticle (grafted or physisorbed), a strong and resonant coupling between molecular and plasmon resonances is expected, inducing a huge enhancement of the absorption properties and the resulting perceived colors of the chromophore/noble metal nanoparticle systems. Although deeply studied at experimental level, molecular resonance is still at its early stage at theoretical level owing to the size and complexity of the hybrid organic/inorganic system under investigation. The aim of this internship is to develop a methodology based on Density-Functional Theory (DFT) and its Time-Dependent variant (TD) allowing a comprehensive understanding of the molecular resonance. For that, we will focus on the theoretical investigation by novel electronic structure approximations of the triangulene family of chromophores in interaction with a panel of gold nanoparticles of increasing size.

DATE February, 6th To June, 26th 2020

CONTACT Name : Dr. Eric BREMOND Lab : ITODYS, UMR CNRS 7086 Adress : 15, rue Jean-Antoine de Baïf, 75013 Paris, FRANCE Phone : 01 57 27 88 19 e-mail : eric.bremond@u-paris.fr Website : https://www.itodys.univ-paris-dider... Twitter : @ItodysC