Helicene-SPP Based Chiral Plasmonic Hybrid Structure: Toward Direct Enantiomers SERS Discrimination.

0500196 - ÚCHP 2020 RIV US eng J - Článek v odborném periodiku
Kalachyova, Y. - Guselnikova, O. - Elashnikov, R. - Panov, Illia - Žádný, Jaroslav - Církva, Vladimír - Storch, Jan - Sýkora, Jan - Záruba, K. - Švorčík, V. - Lyutakov, O.
Helicene-SPP Based Chiral Plasmonic Hybrid Structure: Toward Direct Enantiomers SERS Discrimination.
ACS Applied Materials and Interfaces. Roč. 11, č. 1 (2019), s. 1555-1562. ISSN 1944-8244. E-ISSN 1944-8252
Grant CEP: GA ČR GA15-12719S; GA MPO FV10082
Grant ostatní: TPU(RU) VIU-RSCABS-195/2018
Institucionální podpora: RVO:67985858
Klíčová slova: circular plasmon * helicene * chiral SERS
Obor OECD: Physical chemistry
Impakt faktor: 8.758, rok: 2019
Způsob publikování: Omezený přístup

Achieving chiral-plasmon response based on the combination of achiral plasmonic nanostructures with highly chiral surrounding medium represents an attractive way for creation of hybrid optically active plasmonic materials. In this work, we present an attractive design and fabrication of chiral plasmon substrates based on a surface plasmon-polariton supported structure coupled with extremely optically active helicene enantiomers. Such approach allows us to excite chiral plasmon waves and to design optically active SERS substrates. Its further combination with standard Raman spectroscopy makes possible enantio-selective detection/recognition of optical enantiomers with detection limits below those of standard spectral techniques. The chiral optical response of new plasmonic system was observed and controlled by the optical rotation of helicenes. Without necessity of previous chiral separation or implementation of sophisticated experimental equipment, we were able to estimate the concentration of enantiomers in their mixture by using left- or right-handed chiral plasmon substrates.
Trvalý link: http://hdl.handle.net/11104/0294049