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Carone A, Mariani P, Désert A, Romanelli M, Marcheselli J, Garavelli M, Corni S, Rivalta I, Parola S. Insight on Chirality Encoding from Small Thiolated Molecule to Plasmonic Au@Ag and Au@Au Nanoparticles. ACS NANO 2022; 16:1089-1101. [PMID: 34994190 DOI: 10.1021/acsnano.1c08824] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Chiral plasmonic nanomaterials exhibiting intense optical activity are promising for numerous applications. In order to prepare those nanostructures, one strategy is to grow metallic nanoparticles in the presence of chiral molecules. However, in such approach the origin of the observed chirality remains uncertain. In this work, we expand the range of available chiral plasmonic nanostructures and we propose another vision of the origin of chirality in such colloidal systems. For that purpose, we investigated the synthesis of two core-shell Au@Ag and Au@Au systems built from gold nanobipyramid cores, in the presence of cysteine. The obtained nanoparticles possess uniform shape and size and show plasmonic circular dichroism in the visible range, and were characterized by electron microscopy, circular dichroism, and UV-vis-NIR spectroscopy. Opto-chiral responses were found to be highly dependent on the morphology and the plasmon resonance. It revealed (i) the importance of the anisotropy for Au@Au nanoparticles and (ii) the role of the multipolar modes for Au@Ag nanoparticles on the way to achieve intense plasmonic circular dichroism. The role of cysteine as shaping agent and as chiral encoder was particularly evaluated. Our experimental results, supported by theoretical simulations, contrast the hypothesis that chiral molecules entrapped in the nanoparticles determine the chiral properties, highlighting the key role of the outmost part of the nanoparticles shell on the plasmonic circular dichroism. Along with these results, the impact of enantiomeric ratio of cysteine on the final shape suggested that the presence of a chiral shape or chiral patterns should be considered.
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Affiliation(s)
- Antonio Carone
- Université de Lyon, École Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR 5182, Laboratoire de Chimie, 46 allée d'Italie, F-69364 Lyon, France
| | - Pablo Mariani
- Université de Lyon, École Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR 5182, Laboratoire de Chimie, 46 allée d'Italie, F-69364 Lyon, France
| | - Anthony Désert
- Université de Lyon, École Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR 5182, Laboratoire de Chimie, 46 allée d'Italie, F-69364 Lyon, France
| | - Marco Romanelli
- Dipartimento di Scienze Chimiche, Università di Padova, 35131 Padova, Italy
- Istituto di Nanoscienze, Consiglio Nazionale delle Ricerche CNR-NANO, 41125 Modena, Italy
| | - Jacopo Marcheselli
- Dipartimento di Chimica Industriale "Toso Montanari″, Università degli Studi di Bologna, Viale del Risorgimento 4, I-40136 Bologna, Italy
- SISSA─Scuola Internazionale Superiore di Studi Avanzati, Via Bonomea 265, 34136 Trieste, Italy
| | - Marco Garavelli
- Dipartimento di Chimica Industriale "Toso Montanari″, Università degli Studi di Bologna, Viale del Risorgimento 4, I-40136 Bologna, Italy
| | - Stefano Corni
- Dipartimento di Scienze Chimiche, Università di Padova, 35131 Padova, Italy
- Istituto di Nanoscienze, Consiglio Nazionale delle Ricerche CNR-NANO, 41125 Modena, Italy
| | - Ivan Rivalta
- Université de Lyon, École Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR 5182, Laboratoire de Chimie, 46 allée d'Italie, F-69364 Lyon, France
- Dipartimento di Chimica Industriale "Toso Montanari″, Università degli Studi di Bologna, Viale del Risorgimento 4, I-40136 Bologna, Italy
| | - Stephane Parola
- Université de Lyon, École Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR 5182, Laboratoire de Chimie, 46 allée d'Italie, F-69364 Lyon, France
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Rana AS, Kim I, Ansari MA, Anwar MS, Saleem M, Tauqeer T, Danner A, Zubair M, Mehmood MQ, Rho J. Planar Achiral Metasurfaces-Induced Anomalous Chiroptical Effect of Optical Spin Isolation. ACS APPLIED MATERIALS & INTERFACES 2020; 12:48899-48909. [PMID: 32981321 DOI: 10.1021/acsami.0c10006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Planar chiral structures respond differently for oppositely handed incident light, and thus can produce extraordinary chiroptical effects such as circular conversion dichroism (CCD) and asymmetric transmission (AT). Such chiroptical effects are powerful tools to realize the fundamental principle of optical spin isolation, which leads to a plethora of applications such as optical conversion diodes, chiral imaging, and sensing. Here, we demonstrate the chiroptical effects of simultaneous CCD and AT through meticulously designed single-layered achiral nanofins. Our metamolecule consists of four achiral hydrogenated amorphous silicon (a-Si:H) nanofins that are carefully oriented and optimized to exhibit considerable CCD and AT. The device demonstrates a circular conversion dichroism of 55% and an asymmetric transmission of 58% at a wavelength of 633 nm. Right-hand circularly polarized light (RHCP) is completely absorbed, while left-hand circularly polarized light (LHCP) is transmitted with a polarization conversion, making it a perfect circular polarization wave isolator with negligible backscattering (due to low reflectance). This unique design and its underlying working mechanism are described comprehensively with three different techniques. These methods validate the proposed design and its methodology. For practical applications such as imaging, the proposed design realizes the Pancharatnam-Berry (PB) phase, achieving a 0-2π phase coverage for transmitted circular polarization. For the proof of concept, a metahologram is designed and demonstrated by employing the achieved full-phase control. The measured response of the fabricated metadevice not only validates the CCD and AT but also exhibits a simulated polarization conversion efficiency of up to 71% and measured efficiency up to 52%, comparable to state-of-the-art metahologram demonstrations.
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Affiliation(s)
- Ahsan Sarwar Rana
- NanoTech Lab, Department of Electrical Engineering, Information Technology University of the Punjab, Ferozepur Road, Lahore 54600, Pakistan
| | - Inki Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Muhammad Afnan Ansari
- NanoTech Lab, Department of Electrical Engineering, Information Technology University of the Punjab, Ferozepur Road, Lahore 54600, Pakistan
| | - Muhammad Sabieh Anwar
- Laboratory for Quantum Technologies, Department of Physics, Syed Babar Ali School of Science and Engineering (SBASSE), Lahore University of Management Sciences (LUMS), Opposite Sector U, DHA Lahore 54792, Pakistan
| | - Murtaza Saleem
- Laboratory for Quantum Technologies, Department of Physics, Syed Babar Ali School of Science and Engineering (SBASSE), Lahore University of Management Sciences (LUMS), Opposite Sector U, DHA Lahore 54792, Pakistan
| | - Tauseef Tauqeer
- NanoTech Lab, Department of Electrical Engineering, Information Technology University of the Punjab, Ferozepur Road, Lahore 54600, Pakistan
| | - Aaron Danner
- Department of Electrical and Computer Engineering, National University of Singapore, 117583 Singapore, Singapore
| | - Muhammad Zubair
- NanoTech Lab, Department of Electrical Engineering, Information Technology University of the Punjab, Ferozepur Road, Lahore 54600, Pakistan
| | - Muhammad Qasim Mehmood
- NanoTech Lab, Department of Electrical Engineering, Information Technology University of the Punjab, Ferozepur Road, Lahore 54600, Pakistan
| | - Junsuk Rho
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
- National Institute of Nanomaterials Technology (NINT), Pohang 37673, Republic of Korea
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Mun J, Kim M, Yang Y, Badloe T, Ni J, Chen Y, Qiu CW, Rho J. Electromagnetic chirality: from fundamentals to nontraditional chiroptical phenomena. LIGHT, SCIENCE & APPLICATIONS 2020; 9:139. [PMID: 32922765 PMCID: PMC7463035 DOI: 10.1038/s41377-020-00367-8] [Citation(s) in RCA: 115] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 06/25/2020] [Accepted: 07/08/2020] [Indexed: 05/05/2023]
Abstract
Chirality arises universally across many different fields. Recent advancements in artificial nanomaterials have demonstrated chiroptical responses that far exceed those found in natural materials. Chiroptical phenomena are complicated processes that involve transitions between states with opposite parities, and solid interpretations of these observations are yet to be clearly provided. In this review, we present a comprehensive overview of the theoretical aspects of chirality in light, nanostructures, and nanosystems and their chiroptical interactions. Descriptions of observed chiroptical phenomena based on these fundamentals are intensively discussed. We start with the strong intrinsic and extrinsic chirality in plasmonic nanoparticle systems, followed by enantioselective sensing and optical manipulation, and then conclude with orbital angular momentum-dependent responses. This review will be helpful for understanding the mechanisms behind chiroptical phenomena based on underlying chiral properties and useful for interpreting chiroptical systems for further studies.
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Affiliation(s)
- Jungho Mun
- Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 37673 Korea
| | - Minkyung Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, 37673 Korea
| | - Younghwan Yang
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, 37673 Korea
| | - Trevon Badloe
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, 37673 Korea
| | - Jincheng Ni
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117583 Singapore
| | - Yang Chen
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117583 Singapore
| | - Cheng-Wei Qiu
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117583 Singapore
| | - Junsuk Rho
- Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 37673 Korea
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, 37673 Korea
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Yang Y, Kim M, Mun J, Rho J. Ultra‐Sharp Circular Dichroism Induced by Twisted Layered C4 Oligomers. ADVANCED THEORY AND SIMULATIONS 2020. [DOI: 10.1002/adts.201900229] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Younghwan Yang
- Department of Mechanical EngineeringPohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Minkyung Kim
- Department of Mechanical EngineeringPohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Jungho Mun
- Department of Chemical EngineeringPohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Junsuk Rho
- Department of Mechanical EngineeringPohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
- Department of Chemical EngineeringPohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
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