Jump to main content
Jump to site search

Issue 23, 2018
Previous Article Next Article

Competing plasmonic and charge-transfer excitations in pyridine adsorbed silver and aluminum nanoparticles

Author affiliations

Abstract

Based on time dependent density functional theory calculations, we reveal radical modifications in the optical absorption spectra of pyridine molecules adsorbed on Ag and Al nanoparticles. Transition density plots of the dominant peaks allowed us to classify the excitations into the plasmonic excitation of the nanoparticle or charge-transfer excitations between the pyridine molecule and Ag/Al nanoparticle. More precisely, in the case of Ag–pyridine structures, the optical response does not change much with respect to the 90° reorientation of pyridine, but the transition density plots change significantly. In the case of Al–pyridine structures, the optical response shows dramatic differences with respect to the pyridine orientations and the nature of the excitation of the main peaks exhibits a hybrid nature having both a plasmonic and charge-transfer contribution. We believe that the present theoretical results open exciting prospects in nanoantenna design.

Graphical abstract: Competing plasmonic and charge-transfer excitations in pyridine adsorbed silver and aluminum nanoparticles

Back to tab navigation

Supplementary files

Publication details

The article was received on 21 Apr 2018, accepted on 23 May 2018 and first published on 30 May 2018


Article type: Paper
DOI: 10.1039/C8CP02549E
Citation: Phys. Chem. Chem. Phys., 2018,20, 15884-15889
  •   Request permissions

    Competing plasmonic and charge-transfer excitations in pyridine adsorbed silver and aluminum nanoparticles

    J. H. Mokkath, Phys. Chem. Chem. Phys., 2018, 20, 15884
    DOI: 10.1039/C8CP02549E

Search articles by author

Spotlight

Advertisements