Chiral plasmonic response of 2D Ti3C2Tx flakes: realization and applications

Olshtrem, A. et al. (2023) Chiral plasmonic response of 2D Ti3C2Tx flakes: realization and applications. Advanced Functional Materials, 33(30), 2212786. (doi: 10.1002/adfm.202212786)

Abstract

The circularly polarized light sensitive materials response can be reached at plasmon wavelengths through the coupling of intrinsically non-chiral plasmonic nanostructure with chiral organic molecules. As a plasmonic background, the different types of metal nanoparticles of various shapes and sizes are successfully tested and an apparent circular dichroism (CD) signal is measured in both, nanoparticles suspensions and after nanoparticle immobilization in substrate. In this work, the creation of plasmon-active 2D flakes of MXenes (Ti3C2Tx) is proposed, with the apparent CD response at plasmon wavelength, through the coupling of intrinsically non-chiral flakes with helically shaped helicene enantiomers. This work provides the first demonstration of chiral and plasmon-active 2D material, which shows the absorption sensitive to light intrinsic circular polarization even in plasmon wavelengths range. The appearance of the induced CD signal is additionally confirmed by several theoretical calculations. After the experimental and theoretical confirmation of the optical chirality at plasmon wavelengths, the flakes are utilized for the polarization sensitive conversion of light to heat, as well as for polarization dependent triggering of plasmon-assisted chemical transformation.

• Item Type: Articles
• Additional Information: This work was supported by the GACR under the project 20–19353S.
• Keywords: Helicene, light‐to‐heat conversion, MXene, photocatalysis, plasmon chirality.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Kartau, Mr Martin and Karimullah, Dr Affar
• Authors: Olshtrem, A., Panov, I., Chertopalov, S., Zaruba, K., Vokata, B., Sajdl, P., Lancok, J., Storch, J., Církva, V., Svorcik, V., Kartau, M., Karimullah, A. S., Vana, J., and Lyutakov, O.
• College/School: College of Science and Engineering > School of Chemistry
• Journal Name: Advanced Functional Materials
• Publisher: Wiley
• ISSN: 1616-301X
• ISSN (Online): 1616-3028
• Published Online: 23 April 2023
• Copyright Holders: Copyright © 2023 The Authors
• First Published: First published in Advanced Functional Materials 33(30):2212786
• Publisher Policy: Reproduced under a Creative Commons license