Enantiomeric Discrimination by Surface-Enhanced Raman Scattering-Chiral Anisotropy of Chiral Nanostructured Gold Films

0525540 - ÚOCHB 2021 RIV DE eng J - Journal Article
Liu, Z. - Ai, J. - Kumar, P. - You, E. - Zhou, X. - Liu, X. - Tian, Z. - Bouř, Petr - Duan, Y. - Han, L. - Kotov, N. A. - Ding, S. - Che, S.
Enantiomeric Discrimination by Surface-Enhanced Raman Scattering-Chiral Anisotropy of Chiral Nanostructured Gold Films.
Angewandte Chemie - International Edition. Roč. 59, č. 35 (2020), s. 15226-15231. ISSN 1433-7851. E-ISSN 1521-3773
R&D Projects: GA MŠMT(CZ) LTC17012; GA ČR(CZ) GA18-05770S
Institutional support: RVO:61388963
Keywords : chiral anisotropy * chiral nanostructured Au film * chiral response * enantiomeric discrimination * surface-enhanced Raman scattering
OECD category: Physical chemistry
Impact factor: 15.336, year: 2020
Method of publishing: Limited access
https://onlinelibrary.wiley.com/doi/full/10.1002/anie.202006486

A surface‐enhanced Raman scattering‐chiral anisotropy (SERS‐ChA) effect is reported that combines chiral discrimination and surface Raman scattering enhancement on chiral nanostructured Au films (CNAFs) equipped in the normal Raman scattering Spectrometer. The CNAFs provided remarkably higher enhancement factors of Raman scattering (EFs) for particular enantiomers, and the SERS intensity was proportional to the enantiomeric excesses (ee) values. Except for molecules with mesomeric species, all of the tested enantiomers exhibited high SERS‐ChA asymmetry factors (g ), ranging between 1.34 and 1.99 regardless of polarities, sizes, chromophores, concentrations and ee. The effect might be attributed to selective resonance coupling between the induced electric and magnetic dipoles associated with enantiomers and chiral plasmonic modes of CNAFs.
Permanent Link: http://hdl.handle.net/11104/0309647