Transfer and Amplification of Chirality Within the “Ring of Fire” Observed in Resonance Raman Optical Activity Experiments

0508865 - ÚOCHB 2020 RIV DE eng J - Článek v odborném periodiku
Li, G. - Kessler, Jiří - Cheramy, J. - Wu, Tao - Poopari, M. R. - Bouř, Petr - Xu, Y.
Transfer and Amplification of Chirality Within the “Ring of Fire” Observed in Resonance Raman Optical Activity Experiments.
Angewandte Chemie - International Edition. Roč. 58, č. 46 (2019), s. 16495-16498. ISSN 1433-7851. E-ISSN 1521-3773
Grant CEP: GA ČR(CZ) GA18-05770S; GA MŠMT(CZ) LTC17012; GA MŠMT(CZ) EF16_019/0000729
Institucionální podpora: RVO:61388963
Klíčová slova: chirality transfer * light scattering * nickel complexes * quantum plasmons * resonance Raman optical activity
Obor OECD: Physical chemistry
Impakt faktor: 12.959, rok: 2019
Způsob publikování: Omezený přístup
https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.201909603

We report extremely strong chirality transfer from a chiral nickel complex to solvent molecules detected as Raman optical activity (ROA). Electronic energies of the complex were in resonance with the excitation‐laser light. The phenomenon was observed for a wide range of achiral and chiral solvents. For chiral 2‐butanol, the induced ROA was even stronger than the natural one. The observations were related to so‐called quantum (molecular) plasmons that enable a strong chiral Rayleigh scattering of the resonating complex. According to a model presented here, the maximal induced ROA intensity occurs at a certain distance from the solute, in a three‐dimensional “ring of fire”, even after rotational averaging. Most experimental ROA signs and relative intensities could be reproduced. The effect might significantly increase the potential of ROA spectroscopy in bioimaging and sensitive detection of chiral molecules.
Trvalý link: http://hdl.handle.net/11104/0299663