Vibrational circular dichroism of plasmonic nanostructures embedding chiral drugs
We investigate the mid-infrared chiroptical response of plasmonic nanostructures based on Al-doped ZnO and layers of an aqueous solution of Ladarixin, a chiral pharmaceutical currently under clinical trial for the treatment of type 1 diabetes. We explore the possibilities offered by localised surface plasmon resonances (LSPRs) for the enhancement of vibrational circular dichroism (VCD) of the considered chiral drug solution. Focusing on diverse plasmonic nanoshell geometries, we find that LSPRs provide an amplification factor of VCD differential absorption cross-section ranging from [Formula: see text] to [Formula: see text] thanks to near-field intensity enhancement produced by LSPRs. Our results indicate that nanoshell LSPRs are promising for probing molecular chirality at the nanoscale.
Authors
- P. Benassi (ORCID: https://orcid.org/0000-0003-1021-5614)
- Andrea Marini (ORCID: https://orcid.org/0000-0003-2763-6394)
- Massimiliano Aschi (ORCID: https://orcid.org/0000-0003-2959-0158)
- Giovanna Salvitti (ORCID: https://orcid.org/0000-0002-5485-789X)
- Carino Ferrante (ORCID: https://orcid.org/0000-0002-6391-0672)
- Ambaresh Sahoo
- Andréa Toma (ORCID: https://orcid.org/0000-0003-2877-9805)
- Francesco Di Stasio (ORCID: https://orcid.org/0000-0002-2079-3322)
- Hatice Altug (ORCID: https://orcid.org/0000-0001-5522-1343)
- Raju Adhikary (ORCID: https://orcid.org/0009-0005-0719-1166)
- Matteo Venturi (ORCID: https://orcid.org/0009-0008-0654-8989)
Institutions
- University of L'Aquila (IT)
- Italian Institute of Technology (IT)
- École Polytechnique Fédérale de Lausanne (CH)
Publication Details
- Journal
- Scientific Reports
- Published
- 2025-04-16
- DOI
- https://doi.org/10.1038/s41598-025-97383-8
- Citations
- 2
- Primary Topic
- Metamaterials and Metasurfaces Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.85
Funders
- European Commission
- HORIZON EUROPE European Innovation Council