Chirality conferral enables the observation of hyper-Raman optical activityChirality conferral is fundamental for understanding the origin of life, and it is of direct importance for synthesizing new pharmaceuticals in the face of growing antibiotic resistance. Human-made, self-assembling nanostructures ...
Kumar A, Deval V, Tandon P, Gupta A, Dsilva ED (2014) Experimental and theoretical (FT-IR, FT-Raman, UV-vis, NMR) spectroscopic analysis and first order hyperpolarizability studies of non-linear optical material: (2E)- 3-[4- (methylsulfanyl) phenyl]-1- (4-nitrophenyl) prop-2-en-1...
Raman spectra of the tetragonalD44 structure of paratellurite TeO2 have been revisited avoiding anomalous polarization-selectionrules violations previously observed and due to optical activity. We present a complementary hyper-Raman scattering study of paratellurite. Wavenumber and symmetry assignments are ...
Doubly vibrationally enhanced (DOVE) four-wave mixing spectroscopy, an optical analogue to 2D NMR, involves two infrared transitions and a Raman transition. The magnitude of the DOVE second hyperpolarizability γ (or third-order susceptibility χ(3)) can be theoretically estimated if the values of...
Experimental results suggested that aggregates which have a high activity for nonlinear optical responses were trapped and/or produced by a focusing near-infrared laser. Hyper-Raman signal, whose scattering cross section is much lower than normal Raman scattering, could be obtained easily by focusing...
For silica, we proposed a statistical elementary structural unit with nanometric dimension that fits both the octupolar hyper-Rayleigh response and the multipolar spectral activity. It is derived from the -Cristobalite structure, with a local octupolar S4 symmetry, which consists of a central [SiO4...
We have recently demonstrated thatthe second hyperpolarizabilityγ of a selected vibrational mode of a molecule can be determinedby using the computational Raman activity against an internal standardwith a known Raman γ value. This approach provides a convenientway for prediction of the γ magnitude ...
3-Benzoyl-5-chlorouracil (3B5CU), a biologically active synthetic molecule, has been analysed at DFT/6-311+ +G(d,p) level and reported for the first time as a potential candidate for nonlinear optical (NLO) applications. The optimised skeleton of 3B5CU molecule is non-planar. The ...