Circular Dichroism Reflectance Anisotropy of Chiral Atomically Thin Films

被引：0

作者：

Tomei, Ilaria ^{[1
]}

Pierucci, Filippo ^{[1
]}

Bonanni, Beatrice ^{[1
]}

Sgarlata, Anna ^{[1
]}

Fanfoni, Massimo ^{[1
]}

Yang, Seong-Jun ^{[2
,3
]}

Kim, Cheol-Joo ^{[2
,3
]}

Goletti, Claudio ^{[1
]}

机构：

[1] Univ Roma Tor Vergata, Dept Phys, Via Ric Scientif 1, I-00133 Rome, Italy

[2] Inst Basic Sci IBS, Ctr Waals Quantum Solids, Pohang 37673, South Korea

[3] Pohang Univ Sci & Technol POSTECH, Dept Chem Engn, Pohang 37673, South Korea

来源：

CHEMOSENSORS | 2024年 / 12卷 / 09期

基金：

新加坡国家研究基金会;

关键词：

reflectance anisotropy spectroscopy; circular dichroism; chiral layers; twisted graphene bilayers; SURFACE; SPECTROSCOPY; ADSORPTION; SYMMETRY;

D O I：

10.3390/chemosensors12090170

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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.

引用

页数：9

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