Plasmonic circular dichroism in chiral gold nanowire dimers
| Autor: | Daniele Toffoli, Marco Medves, Giovanna Fronzoni, Emanuele Coccia, Mauro Stener, Luca Sementa, Alessandro Fortunelli |
|---|---|
| Přispěvatelé: | Toffoli, D., Medves, M., Fronzoni, G., Coccia, E., Stener, M., Sementa, L., Fortunelli, A. |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Nanoplasmonics
plasmon circular dichroism nanoplasmonics metal clusters Organic Chemistry Physics::Optics Pharmaceutical Science Plasmon Metal cluster Circular dichroism Metal clusters Article Analytical Chemistry Nanoplasmonic Condensed Matter::Materials Science QD241-441 Chemistry (miscellaneous) Drug Discovery Molecular Medicine Physical and Theoretical Chemistry |
| Zdroj: | Molecules Molecules (Basel, Online) 27 (2022): 93-1–93-18. doi:10.3390/molecules27010093 info:cnr-pdr/source/autori:Toffoli D.; Medves M.; Fronzoni G.; Coccia E.; Stener M.; Sementa L.; Fortunelli A./titolo:Plasmonic circular dichroism in chiral gold nanowire dimers/doi:10.3390%2Fmolecules27010093/rivista:Molecules (Basel, Online)/anno:2022/pagina_da:93-1/pagina_a:93-18/intervallo_pagine:93-1–93-18/volume:27 Molecules, Vol 27, Iss 93, p 93 (2022) Molecules; Volume 27; Issue 1; Pages: 93 |
| DOI: | 10.3390/molecules27010093 |
| Popis: | We report a computational study at the time-dependent density functional theory (TDDFT) level of the chiro-optical spectra of chiral gold nanowires coupled in dimers. Our goal is to explore whether it is possible to overcome destructive interference in single nanowires that damp chiral response in these systems and to achieve intense plasmonic circular dichroism (CD) through a coupling between the nanostructures. We predict a huge enhancement of circular dichroism at the plasmon resonance when two chiral nanowires are intimately coupled in an achiral relative arrangement. Such an effect is even more pronounced when two chiral nanowires are coupled in a chiral relative arrangement. Individual component maps of rotator strength, partial contributions according to the magnetic dipole component, and induced densities allow us to fully rationalize these findings, thus opening the way to the field of plasmonic CD and its rational design. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|