Browsing Division of Chemical Sciences by Advisor "Das, Puspendu K"
Now showing items 1-10 of 10
-
First Hyperpolarizability (β) of Organic and Inorganic Compounds : Keto-Enol Tautomerism and Halogen Effect
(2018-05-09)The work presented in this thesis has broadly established a few findings about the structure¬hyperpolarizability relation in molecular compounds: First, by measuring βHRS of an organic keto-enol tautomer, benzoylacetanilide ... -
Nanoparticle Mediated Suppression of Protein Aggregation
(2018-05-11)The increasing demands for biopharmaceuticals to treat different diseases have raised concerns about controlling the quality and efficacy of such pharmaceuticals. The design and formulation of a stable protein or peptide ... -
Probing The Equilibrium Geometry Of Weakly Interacting Systems In Solution By Hyper-Rayleigh Scattering
(2014-08-11)Under the electric dipole approximation, second harmonic of the incident light is scattered by a collection of randomly oriented molecular dipoles in solution due to instantaneous orientational fluctuation which is ... -
Probing The Origin Of Second Harmonic Generation From Copper Nanoparticles In Solution By Hyper-Rayleigh Scattering
(2010-08-09)In recent years, coinage metal nanoparticles have emerged as materials with largest quadratic optical nonlinearity. Their first hyperpolarizabilities (β) are very high (105-106 x 10-30 esu) but such large values were quite ... -
Protein Adsorption on Gold Nanoparticle and Protein Surfaces Probed by Second Harmonic Light Scattering
Second harmonic light scattering (SHLS) is a highly sensitive technique to probe reactions at interfaces/surfaces because of symmetry breaking at the interface/surface produces a large surface polarization which gives ... -
Quadratic Nonlinearity In Covalently And Non-Covalently Linked Molecules In Solution
(2008-10-01)This thesis deals with the investigation of the first hyperpolarizabilities (β) of a large number of molecules linked to other molecules either covalently or noncovalently. Chapter 1 gives a brief introduction to ... -
Quadratic Optical Nonlinearity And Geometry Of 1:1 Electron Donor Acceptor Complexes In Solution
(2010-06-04)The knowledge of geometry of molecular complexes formed via molecular association in solution through weak interactions is always important to understand the origin of stability and function of an array of molecules, ... -
Reversible Redox Switching of First Hyperpolarizability (Β) of Metallorganic Complexes
The concept of molecular switches has garnered enormous interest because of the vital role of these switches as components in molecular electronic/photonic devices, signal transmission and optical communication. Compounds ... -
Thermodynamics of Protein Adsorption on Gold and Silica Nanoparticles
Nanoparticle-based biomedical applications in disease diagnostics, site targeting, drug delivery, etc., have been pursued vigorously with the hope of finding better solutions than conventional diagnostics and therapeutics. ...