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Transfer and Amplification of Chirality Within the “Ring of Fire” Observed in Resonance Raman Optical Activity Experiments
Author(s) -
Li Guojie,
Kessler Jiří,
Cheramy Joseph,
Wu Tao,
Poopari Mohammad Reza,
Bouř Petr,
Xu Yunjie
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201909603
Subject(s) - raman optical activity , chirality (physics) , resonance (particle physics) , excitation , molecule , raman spectroscopy , chemistry , raman scattering , rayleigh scattering , molecular physics , ring (chemistry) , spectroscopy , nuclear magnetic resonance , chemical physics , photochemistry , materials science , atomic physics , optics , chiral symmetry , physics , organic chemistry , quantum mechanics , nambu–jona lasinio model , quark
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.