Circular Dichroism Measurement of Single Anisotropic Chiral Nanostructure Using Scanning Circular Dichroism Microscopy

IF 5.8 3区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nanoscale Pub Date : 2025-03-26 DOI:10.1039/d4nr04868g

Jiaxin Du, Xujin Qin, Xinyu Li, Hongyan Shi, Yueling Zhang, Pengfei Duan, Bo Gao

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引用次数: 0

Abstract

Circular dichroism (CD) spectroscopy is widely used to study the chiroptical properties of chiral materials, including films, solutions, and isotropic materials. However, measuring the CD signal of single anisotropic chiral nanostructures is challenging due to the presence of “artifact” signals, such as linear dichroism (LD) and linear birefringence (LB). In this study, we employed scanning circular dichroism microscopy (SCDM) to extract the intrinsic CD signal of the single DBD/LBL self-assembled chiral supramolecule. Using the Stokes–Mueller formalism, we analyzed the SCDM signal, which exhibited a sinusoidal dependence on the polarization angles of the laser beam. This approach enabled the determination of both the orientation and the intrinsic CD. The intrinsic CD of the single DBD self-assembled chiral supramolecule was 9.9 mdeg, while that of the single LBL self-assembled chiral supramolecule was –9.3 mdeg. The SCDM provides new method in measuring CD at the nanoscale, paving the way for future advancements in optoelectronic applications and introducing an approach for studying chiral nanomaterials.

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来源期刊

Nanoscale CHEMISTRY, MULTIDISCIPLINARY-NANOSCIENCE & NANOTECHNOLOGY

CiteScore

12.10

自引率

3.00%

发文量

1628

审稿时长

1.6 months

期刊介绍： Nanoscale is a high-impact international journal, publishing high-quality research across nanoscience and nanotechnology. Nanoscale publishes a full mix of research articles on experimental and theoretical work, including reviews, communications, and full papers.Highly interdisciplinary, this journal appeals to scientists, researchers and professionals interested in nanoscience and nanotechnology, quantum materials and quantum technology, including the areas of physics, chemistry, biology, medicine, materials, energy/environment, information technology, detection science, healthcare and drug discovery, and electronics.