Preparation of chiral compounds with high optical purity by irradiation with circularly polarized light, a model reaction for the prebiotic generation of optical activity

1974 ◽  
Vol 96 (16) ◽  
pp. 5152-5158 ◽  
Author(s):  
G. Balavoine ◽  
A. Moradpour ◽  
H. B. Kagan
Keyword(s):  
Optical Activity ◽  
Polarized Light ◽  
Optical Purity ◽  
Model Reaction ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Chiral Compounds ◽  
High Optical Purity

scholarly journals Engineering Optical Activity of Semiconductor Nanocrystals via Ion Doping

Nanophotonics ◽  
2016 ◽  
Vol 5 (4) ◽  
pp. 573-578 ◽  
Author(s):  
Nikita V. Tepliakov ◽  
Anvar S. Baimuratov ◽  
Yurii K. Gun’ko ◽  
Alexander V. Baranov ◽  
Anatoly V. Fedorov ◽  
...  
Keyword(s):  
Optical Activity ◽  
Semiconductor Nanocrystals ◽  
Polarized Light ◽  
Inorganic Nanoparticles ◽  
Chiral Molecules ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Optical Wavelength ◽  
Ion Doping ◽  
Ionic Impurities

AbstractControlling the strength of enantioselective interaction of chiral inorganic nanoparticles with circularly polarized light is an intrinsically interesting subject of contemporary nanophotonics. This interaction is relatively weak, because the chirality scale of nanoparticles is much smaller than the optical wavelength. Here we theoretically demonstrate that ion doping provides a powerful tool of engineering and enhances optical activity of semiconductor nanocrystals. We show that by carefully positioning ionic impurities inside the nanocrystals, one can maximize the rotatory strengths of intraband optical transitions, and make them 100 times larger than the typical rotatory strengths of small chiral molecules.

Electric-field-induced differential scattering of right and left circularly polarized light

1975 ◽  
Vol 345 (1642) ◽  
pp. 365-377 ◽  
Keyword(s):  
Electric Field ◽  
Optical Activity ◽  
Electromagnetic Waves ◽  
Polarized Light ◽  
Static Electric Field ◽  
Circularly Polarized Light ◽  
Active Systems ◽  
Circularly Polarized ◽  
Dipolar Molecules ◽  
The Difference

The differential scattering of right and left circularly polarized light is a manifestation of optical activity. Both naturally optically active systems and fluids in a magnetic field parallel to the direction of propagation exhibit differential scattering. Although there is no electric analogue of Faraday’s effect, a static electric field applied to a fluid perpendicular to the direction of propagation induces a difference in the scattered intensities of right and left circularly polarized light. The difference is linear in the field strength. It is determined by the effect of the field on the polarizabilities producing optical activity and is present in all matter, including monatomic gases. The classical theory of the scattering of electromagnetic waves is used in a formulation of the general theory of light scattering in an electric field. Results are given for some particular symmetries, including spherical, tetrahedral and dipolar molecules, and estimates of the magnitude of the effect are made.

scholarly journals Optical Activity Developed by Preferential Racemization of One Enantiomer in Racemic Cr(III) (ox)33- Induced by Irradiation with Circularly Polarized Light.

1970 ◽  
Vol 24 ◽  
pp. 349-351 ◽  
Author(s):  
Bengt Nordén ◽  
Björn Lindman ◽  
Charles Larsen ◽  
Per Halfdan Nielsen ◽  
S. E. Rasmussen ◽  
...  
Keyword(s):  
Optical Activity ◽  
Polarized Light ◽  
Circularly Polarized Light ◽  
Circularly Polarized

scholarly journals Photochemically Induced Circular Dichroism of Semiconductor Nanocrystals-=SUP=-*-=/SUP=-

2020 ◽  
Vol 128 (8) ◽  
pp. 1192
Author(s):  
F.M. Safin ◽  
V.G. Maslov ◽  
A.Y. Dubavik ◽  
E.P. Kolesova ◽  
A.V. Baranov ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Optical Activity ◽  
Semiconductor Nanocrystals ◽  
Polarized Light ◽  
Induced Circular Dichroism ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Quantum Rods ◽  
Reaction Proceeds ◽  
Circular Dichroïsm

Here, we report an investigation of optical activity which was photochemically induced by illumination of QRs and DiRs with circularly polarized light; the photo-induced circular dichroism was quantitatively estimated, and it was shown that the photo-induced chemical reaction proceeds selectively, depending on the handedness of circularly polarized light. Keywords: chirality, optical activity, circular dichroism, photoinduced circular dichroism, semiconductor nanocrystals, quantum rods, quantum dot-in-rods.

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