A supramolecular cocrystal of 2-ammino-5-nitropyridine (ANP) with 2,4-dinitrophenol (DNP) has been successfully grown by the slow evaporation solution growth technique. The crystal structure 2-amino-5-nitropyridine-2,4-dinitrophenol (ANDP) was elucidated single-crystal X-ray diffraction analysis, and it belongs to a monoclinic system centrosymmetric space group P21/n. bulk phase purity homogene...

In this work the role that charge delocalization plays in non-linear optical response of ionic liquids is evaluated. The first hyperpolarizability for process second harmonic generation (SHG) and electro-optical Kerr-Effect (EOKE) a large number liquid forming ions were estimated by means density functional theory calculations. results point to both molecular geometry are key features govern th...

We use nonlinear beam deflection to separate the bound-electronic and nuclearrotational responses in gas-phase CS2. This allows a direct comparison of the second hyperpolarizability to our liquid CS2 measurements considering local-field effects. OCIS codes: (190.0190) Nonlinear optics, (190.3270) Kerr effect, (190.5650) Raman effect, (350.3250) Isotope separation

The second hyperpolarizability 7 of a molecule plays a role in non-linear optical processes [ 1,2] as well as in intermolecular interactions [3,4]. Usually y(--wo; WI, ~2, ~3) is measured by optical methods such as the dc Kerr effect, electric-field-induced second-harmonic generation (ESHG) of third-harmonic generation (THG), where these processes differ in the choice of the frequency arguments...

Large nonlinear optical electronic polarizabilities would be advantageous for a variety of devices and have been intensely studied for around three decades. This project examines the theoretical limits on the static first non-linear electronic susceptibility of a material, known as the hyperpolarizability. Numerical optimizations for a single fermion in a one-dimensional potential suggest that ...

Molecular properties leading to second harmonic generation in chiral media in the electric dipole approximation for the cases of axial and biaxial symmetry are described. The components of the hyperpolarizability tensor that transform like a second-rank pseudotensor (L ˆ 2) and a third-rank tensor (L ˆ 3) contribute. The sum-over-states quantum formula for the hyperpolarizability is used to ill...