Recently, a technical modification of a Reflectance Anisotropy Spectroscopy (RAS) spectrometer has been proposed to investigate the circular dichroism (CD) of samples instead of the normally studied linear dichroism. CD-RAS measures the anisotropy of the optical properties of a sample under right-handed and left-handed circularly polarized light. Here, we present the application of CD-RAS to measure the circular dichroism of a twisted bilayer of graphene, purposely prepared as a possible substrate for the adsorption of thin molecular layers, in air, in liquid or in a vacuum. This result demonstrates the performance of the apparatus and shows interesting perspectives for the investigation of chiral organic assemblies deposited in solid film.

Tomei, I., Pierucci, F., Bonanni, B., Sgarlata, A., Fanfoni, M., Yang, S., et al. (2024). Circular Dichroism Reflectance Anisotropy of Chiral Atomically Thin Films. CHEMOSENSORS, 12(9) [10.3390/chemosensors12090170].

Circular Dichroism Reflectance Anisotropy of Chiral Atomically Thin Films

Tomei, Ilaria;Bonanni, Beatrice;Sgarlata, Anna;Fanfoni, Massimo;Goletti, Claudio
2024-01-01

Abstract

Recently, a technical modification of a Reflectance Anisotropy Spectroscopy (RAS) spectrometer has been proposed to investigate the circular dichroism (CD) of samples instead of the normally studied linear dichroism. CD-RAS measures the anisotropy of the optical properties of a sample under right-handed and left-handed circularly polarized light. Here, we present the application of CD-RAS to measure the circular dichroism of a twisted bilayer of graphene, purposely prepared as a possible substrate for the adsorption of thin molecular layers, in air, in liquid or in a vacuum. This result demonstrates the performance of the apparatus and shows interesting perspectives for the investigation of chiral organic assemblies deposited in solid film.
2024
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore PHYS-03/A - Fisica sperimentale della materia e applicazioni
English
Con Impact Factor ISI
reflectance anisotropy spectroscopy
circular dichroism
chiral layers
twisted graphene bilayers
Tomei, I., Pierucci, F., Bonanni, B., Sgarlata, A., Fanfoni, M., Yang, S., et al. (2024). Circular Dichroism Reflectance Anisotropy of Chiral Atomically Thin Films. CHEMOSENSORS, 12(9) [10.3390/chemosensors12090170].
Tomei, I; Pierucci, F; Bonanni, B; Sgarlata, A; Fanfoni, M; Yang, S; Kim, C; Goletti, C
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/391243
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