Chiral Plasmonic Response of 2D Ti3C2Tx Flakes: Realization and Applications

0572017 - ÚCHP 2024 RIV DE eng J - Journal Article
Olshtrem, A. - Panov, Illia - Chertopalov, Sergii - Záruba, K. - Vokatá, B. - Sajdl, P. - Lančok, Ján - Storch, Jan - Církva, Vladimír - Švorčík, V. - Kartau, M. - Karimullah, A.S. - Váňa, J. - Lyutakov, O.
Chiral Plasmonic Response of 2D Ti3C2Tx Flakes: Realization and Applications.
Advanced Functional Materials. Roč. 33, č. 30 (2023), č. článku 2212786. ISSN 1616-301X. E-ISSN 1616-3028
R&D Projects: GA ČR(CZ) GA20-19353S
Institutional support: RVO:67985858 ; RVO:68378271
Keywords : helicene * light-to-heat conversion * MXene * photocatalysis * plasmon chirality
OECD category: Organic chemistry; Condensed matter physics (including formerly solid state physics, supercond.) (FZU-D)
Impact factor: 19, year: 2022
Method of publishing: Open access
https://onlinelibrary.wiley.com/doi/epdf/10.1002/adfm.202212786?src=getftr

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.
Permanent Link: https://hdl.handle.net/11104/0342856