Molecular-Induced Chirality Transfer to Plasmonic Lattice Modes

Görlitzer E, Zapata-Herrera M, Ponomareva E, Feller D, Garcia-Etxarri A, Karg M, Aizpurua J, Vogel N (2023)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2023

Journal

ACS Photonics American Chemical Society

Publisher: American Chemical Society

DOI: 10.1021/acsphotonics.3c00174

Abstract

Molecular chirality plays fundamental roles in biology. The chiral response of a molecule occurs at a specific spectral position, determined by its molecular structure. This fingerprint can be transferred to other spectral regions via the interaction with localized surface plasmon resonances of gold nanoparticles. Here, we demonstrate that molecular chirality transfer occurs also for plasmonic lattice modes, providing a very effective and tunable means to control chirality. We use colloidal self-assembly to fabricate non-close packed, periodic arrays of achiral gold nanoparticles, which are embedded in a polymer film containing chiral molecules. In the presence of the chiral molecules, the surface lattice resonances (SLRs) become optically active, i.e., showing handedness-dependent excitation. Numerical simulations with varying lattice parameters show circular dichroism peaks shifting along with the spectral positions of the lattice modes, corroborating the chirality transfer to these collective modes. A semi-analytical model based on the coupling of single-molecular and plasmonic resonances rationalizes this chirality transfer. © 2023 The Authors. Published by American Chemical Society.

Authors with CRIS profile

Eric Görlitzer Professur für Partikelsynthese Nicolas Vogel Professur für Partikelsynthese

Involved external institutions

Heinrich-Heine-Universität Düsseldorf DE Germany (DE) Donostia International Physics Center (DIPC) ES Spain (ES) Center for Materials Physics / Centro de Física de Materiales ES Spain (ES)

How to cite

APA:

Görlitzer, E., Zapata-Herrera, M., Ponomareva, E., Feller, D., Garcia-Etxarri, A., Karg, M.,... Vogel, N. (2023). Molecular-Induced Chirality Transfer to Plasmonic Lattice Modes. ACS Photonics. https://doi.org/10.1021/acsphotonics.3c00174

MLA:

Görlitzer, Eric, et al. "Molecular-Induced Chirality Transfer to Plasmonic Lattice Modes." ACS Photonics (2023).

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