Division of Chemical Sciences: Recent submissions
Now showing items 881-900 of 969
-
Synthesis, Characterization, Properties And Growth Of Inorganic Nanomaterials
(2010-06-03)The thesis consists of eight chapters of which the first chapter presents a brief overview of inorganic nanostructures. Synthesis and magnetic properties of MnO and NiO nanocrystals are described in Chapter 2, with emphasis ... -
Design And Synthesis Of Novel Soft Composites From Physical Gels And Nanomaterials
(2010-06-03)The present thesis entitled “Design and Synthesis of Novel Soft Composites from Physical Gels and Nanomaterials” deals with soft materials derived from low molecular weight gels and nanomaterials. Chapter 1 gives a ... -
Gas Phase And Electrocatalytic Reaction Over Pt, Pd Ions Substituted CeO2, TiO2 Catalysts and Electronic Interaction Between Noble Metal Ions And The Reducible Oxide
(2010-06-02)Among the various heterogeneous catalytic reactions three way catalysis (TWC), catalytic combustion of hydrogen, water gas shift reaction (WGS) and preferential oxidation of CO (PROX) in the hydrogen rich stream are some ... -
Enantiospecific Approaches To Komarovispiranes
(2010-05-25)Among Nature's creation, terpenoids are more versatile and exciting natural products. In a remarkable display of synthetic ingenuity and creativity, nature has endowed terpenes with a bewildering array of carbocyclic ... -
Investigations Into The Microstructure-Property Correlation In Doped And Undoped Giant Dielectric Constant Material CaCu3Ti4O12
(2010-05-24)High dielectric constant materials are of technological importance as they lead to the miniaturization of the electronic devices. In this context, the observation of anomalously high dielectric constant (>104) in the ... -
Investigations Into The Synthesis, Structural And Dielectric Properties Concerning The Relaxor Behavior Of n=2 Members Of The Aurivillius Family Of Oxides
(2010-05-21)Relaxor ferroelectrics have been a subject of intense research owing to their interesting physical properties such as high dielectric constant and giant electro-striction. Unlike the conventional lead based relaxors, the ... -
Functional Hyperbranched Polyethers Via Melt-Transetherification Polymerization
(2010-04-12)Dendrimers are highly branched macromolecules which are prepared by a stepwise procedure. The presence of a well-defined core, discrete generations and a large number of terminal groups in dendrimers make them structurally ... -
Studies On Epitaxial Perovskite Biferroic Heterostructures
(2010-04-08)The present research work focuses on the fabrication and characterization of epitaxial heterostructures of 0.7 Pb(Mg1/3N2/3)O3 – 0.3 PbTiO3 (PMN-PT) and La0.6Sr0.4MnO3 (LSMO) using multi target pulsed laser ablation ... -
Thin Films From Metalorganic Precursors : ALD Of VO2 And CVD Of (Al1-xGax)2O3
(2010-04-08)Thin films and coatings of oxides are used in various fields of science and technology, such as semiconductor and optoelectronic devices, gas sensors, protective and wear resistant coatings etc. Of late, there has been a ... -
Studies On Pure And Modified Antiferroelectric PbZrO3 Thin Films
(2010-04-06)Metal oxides crystallized in perovskite structure are generally modified in two different ways. According to the general structural formula ABO3, the two ways are A-site modification and B-site modification. The primary ... -
Ferroelectric Perovskite Superlattices By Pulsed Laser Ablation
(2010-03-18)Fabrication of artificially structured superlattices, when controlled on a nanoscale level, can exhibit enhanced dielectric properties over a wide temperature range. Possible fabrication of new functional devices based on ... -
Soft X-ray Multilayers As Polarizing Elements : Fabrication, And Studies Of Surfaces And Interfaces
(2010-03-09)The exploitation of the soft x-ray/extreme ultra-violet (EUV) region of the electromagnetic spectrum is possible mainly due to the development of multilayer (ML) mirrors. This region of the electromagnetic spectrum offers ... -
Electrochemical Studies Of Polyaniline And Some Of Its Applications
(2010-03-03)The studies reported in the thesis deal with surface modification of non-platinum metals by coating with electronically conducting polymers, namely, polyanilne (PANI) and polypyrrole (PPY). The oxidation of Г/I2, ... -
Chemistry Of Tetrathiomolybdate And Tetraselenotungstate : Studies On Aziridine And Epoxide Ring Opening Reactions
(2010-02-25)The thesis entitled “Chemistry of Tetrathiomolybdate and Tetraselenotungstate: Studies on Aziridine and Epoxide Ring Opening Reactions” is divided into five chapters. (For Formulas and Equations Refer PDF File) Chapter ... -
Thin Films Of A Carbonaceous Copper Oxide, Li Doped Cobalt Oxide And Li At Nanometric Dimension : Synthesis Through CVD, Solgel And Electromagnetic Irradiation And Characterisation
(2009-09-14)Thin film nanostructures may be defined as assemblies, arrays, or randomly distributed nanoparticles, nanowires, or nanotubes, which together form a layer of materials supported on a substrate surface. Because such ... -
Dynamics Of Activated Processes Involving Chain Molecules
(2009-09-11)This thesis presents our recent study of few interesting problems involving activated processes. This chapter gives an overview of the thesis. It is now possible to do single molecule experiments involving enzyme molecules. ... -
Investigation Of Electronic And Magnetic Structure Of Transition Metal Oxides With Emphasis On Magnetoresistive Systems
(2009-09-10)Electronic structure of transition metal oxides has been a subject of intense research since decades due to the wide spectrum of properties that they exhibit, like high temperature superconductivity, metal-insulator ... -
Investigations Of Mechanical And Thermoelectric Properties Of Group (VIB) Transition Metal Disilicides
(2009-09-10)Transition Metal (TM) silicides are potential materials for different high temperature applications due to their high melting points and chemical stability at elevated temperatures. In the present work, the possible use of ... -
Studies On The Photo-induced DNA Cleavage Activity Of α-Amino Acid Copper Complexes Having Phenanthroline Bases
(2009-09-03)Photo sensitizers showing visible light induced DNA cleavage activity are of current importance for medicinal applications related to photodynamic therapy (PTD) considering greater skin penetration of light near 700 nm. ... -
Nature Of Solute-Solvent Interaction : Effect Of Solvent Polarity On Excited State Structure Of 2,2,2-Trifluroacetophenone And Effect Of Hydrogen Bonding In Hydrated Electron Absorption Spectrum
(2009-09-02)In solution, the environment around the solute is determined solely by the solvent molecules, which are present closer to the solute. This interaction between solute and solvent shell is very crucial for equilibrium structure ...