Browsing Division of Chemical Sciences by Title
Now showing items 717-736 of 1480
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Novel Strategies for the Synthesis of Organo-Sulfur Compounds under Metal-Free Reaction Conditions
(2018-09-04)The thesis titled “Novel Strategies for the Synthesis of Organo-Sulfur Compounds Under Metal-free Reaction conditions” is presented into three main sections. Section A– deals with the synthesis of thiourea and thioamide. Section ... -
Novel Strategies Towards Condenced Triazoles, Ferrocene Aminoacids, Conjugates And Selenosulfides
(2011-01-17)Chapter 1: Facile entry into triazole fused tetrahydropyrazinones from amines and amino acids. In this chapter, A practical and high yielding regioselective synthesis of several new, enantiopure 4,5,6,7-tetrahydro[1,2, ... -
Novel Studies In Organic Stereochemistry
(2011-12-02) -
Novel Synthesis Of Transition Metal And Nobel Metal Ion Substituted CeO2 And TiO2 Nanocrystallites For Hydrogen Generation And Electro-Chemical Applications
(2011-06-30)Ceria based materials have attracted a great deal of interest particularly in area of UV shielding, oxide ion conductivity, solid state electrolyte for fuel cells, automotive exhaust catalysis, water gas shift (WGS) reaction ... -
Novel Synthetic Strategies towards Acetylenic Biscarbamates/Biscarbonates and Organochalcogen Derivatives
(2018-05-01)Bisacetylenic cabamates/carbonates are most useful compounds in finger mark development, for the synthesis of polymeric gels and other material applications. Organochalogen derivatives are the organic compounds containing ... -
Nuclear quantum effects in gas-phase systems with large amplitude motions: A study of 2-fluoroethanol, ethylene glycol, and H3O2
This thesis explores the role of nuclear quantum effects in selected systems containing large amplitude motion through path integral simulations. Recent works have explored molecules with such floppy modes and examined ... -
Nucleophilic Addition reactions of 2-Aza-allyl anion: Application to the Total Synthesis of Natural Products
The thesis entitled “Nucleophilic Addition reactions of 2-Aza-allyl anion: Application to the Total Synthesis of Natural Products’’ is divided into two sections with an appendix. First section of the thesis details the ... -
Nucleophilic Boron Chemistry: Catalytic approaches to C-X (X= Br, Cl, O, N) Bond Activation in Metal/Metal-free Conditions
The boron-carbon bond occupies a central position in organic synthesis, functioning as a versatile “universal connector” to a broad range of functional groups. As a result, organoboranes have become indispensable synthetic ... -
On new sulphanilamide drugs : N1-substituted sulphanilamide derivatives of S-alkylisothioureas and S-alkylisothiosemicarbazides
The present thesis consists of three parts, all of them dealing generally with synthetic drugs consisting of N?-substituted sulphanilamide derivatives of S-alkyl-isothioureas and S-alkyl-isothiosemicarbazides. Part I This ... -
On the Development of Repetition-Rate Scalable Multidimensional Spectroscopy
Pump-probe (PP) spectroscopy is a powerful and now routine time-resolved spectroscopic technique that routinely probes the non-equilibrium electronic and nuclear motions with sub-10 fs temporal resolution. PP spectroscopy ... -
On the Origin of Parasitic (Electro)Chemistry in Rechargeable Aprotic Metal-Oxygen Batteries
Aprotic metal-oxygen batteries, especially Li-O2 and Na-O2 batteries, could afford theoretical specific energies in excess of 1000 Wh/kg. However, the practical realization of the theoretically possible high specific ... -
On the role of vibrational-electronic couplings in dictating the ultrafast photophysics of molecular dyads
Ultrafast energy and charge transfer driven by coupled vibrational–electronic (“vibronic”) motions is a central topic in much of photochemistry and photophysics. Accurately describing the quantum dynamics requires an exact ... -
One-Pot Synthesis Of Chiral Disulfides & Diselenides From α-Amino Acids Mediated By Ammonium Tetrathiomolybdate In Water
(Indian Institute of Science, 2007-03-27)We have described herein a convenient one-pot synthesis of lisulfides/diselenides from a-amino acids mediated by ammonium etrathiomolybdate in water. (Figure 1) (Figure) Figure 1 Transformation of α-amino acids ... -
Optical and Structural Studies of Nanocrystal Assemblies
In my thesis I have delved into studying nanoparticle assemblies that can be applied to different types of applications. For example, certain types of nanoparticles can be utilized as quantum light sources or a different ... -
Optimization of Li Storage in Graphitic Materials through Tuning of Electronic Structures
In the current scenario of global warming, pollution and the very limited resources of fossil fuels, Li ion batteries show great promises to fulfil the energy demand of modern civilization without harming the environment. ... -
Optimizing Light Absorption and Nanomorphology in Organic Solar Cells and Near-IR Photodetectors with Ternary Blend Approaches
Solution-processed Organic Solar cells (OSCs) are a promising renewable energy solution due to their solution-processable roll-to-roll fabrication, semitransparency, lightweight, and flexibility. Significant efforts have ... -
Opto-electronic Properties of a Few Dimensionally Controlled Hybrid Halides and Related Systems
To mitigate the adverse environmental effects of burning fossil fuels, it became necessary to explore alternative ‘clean’ renewable energy sources to meet the ever-increasing energy demands. While silicon-based solar cell ... -
Optoelectronic and Magnetic Properties of 2D Layered Organic-Inorganic Hybrids and Selected Transition Metal Oxides
Perovskites with the general chemical formula ABX3 can be categorized into oxides and halides depending on the nature of the X anion. 3D organic-inorganic halide perovskites are extensively studied in the context of solar ...