etd AT Indian Institute of Science: Recent submissions
Now showing items 21-40 of 7946
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INVESTIGATIONS ON Positive Temperature Coefficient of Resistance OF POLYCRYSTALLINE BARIUM TITANATE
The way similar to monomerisation or at higher temperatures. CD studies indicated no major change in the secondary structure of the proteins of lipovitellins during chloroform absorption. The interaction of Ca²? and Na? ... -
Studies in the polarographic (D.C and A.C) behaviour of amino acid complexes of vanadium
As already pointed out the chief techniques employed in the present work are the classical d.c. polarography and its variation the a.c. polarography. It is the complementary use of these two techniques that has been helpful ... -
Effect of prior treatment on the chemical reactivity of inorganic perchlorates Ph.D. Thesis
The effect of mechanical and thermal pre-treatment on the chemical reactivity of inorganic perchlorates has been studied. The perchlorate system was chosen in view of its importance as a source of oxygen in solid rocket ... -
Quantum emitters-integrated flat optics using the guided mode-resonant metasurface and the hyperbolic metamaterial
Solid-state quantum emitters are efficient, scalable single-photon sources with tunable properties of quantum yields and dipole oscillator strengths. Such emitters are emerging sources for a myriad of near-field light-matter ... -
Palladium complexes of P,P-, P,N- and P,S- donor ligands based on the P-N-P motif
The diphosphazane ligands of the type Ph?P(E)N(R)P(E?)Ph? (1–5) exhibit diverse palladium–allyl chemistry, including various fluxional processes in solution. The symmetrical ligands Ph?PN(CHMe?)PPh? (1) and Ph?P(S)N(CHMe?)P(S)Ph? ... -
Theoretical studies on intermolecular hydrogen transfer reactions
Overview of Intermolecular Hydrogen Transfer Reactions This thesis explores various features of intermolecular hydrogen transfer reactions using theoretical methods such as ab initio calculations and analytical models. Key ... -
Lanthanide and actinide complexes of diphosphazane dioxides and lanthanide complexes of amino acids and peptides
The chemistry of f-block elements is currently undergoing rapid developments, and a rich and diverse chemistry is emerging because of its various applications (e.g., MOCVD precursors, MRI contrast agents). In addition, ... -
Theoretical studies on hydrogen transfer reactions
The present analysis reveals the following features: (i) The calculated activation barriers via both configuration mixing approach (using equations 2.1–2.4) and quantum chemical methods (using MNDO/RHF/CI and AM1/RHF/CI) ... -
Low temperature synthesis & characterization of fine particle perovskite oxide & structurally rlated mixed metal oxides
This thesis concentrates on the precursor chemistry of simple and mixed metal carboxylates, especially the citrates and tartrates. The carboxylate process is simple, convenient and most efficient to synthesize fine powders ... -
Novel reactions of copper (I) phenoxide with hetero-allenes: a synthetic and structural study.
In the present study several novel reactions of copper(I) phenoxide with small molecules like CS?, PhNCS, PhNCO and other heteroallenes have been investigated. The products have been characterised by spectroscopic techniques ... -
Photoelectrochemistry of polycrystalline SrTiO3 and BaTiO3 semiconductor electrodes
This thesis deals with the investigations on the photoelectrochemistry and photoelectrolysis of water, making use of polycrystalline semiconductor electrodes of BaTiO? and SrTiO? with a view to understand the effect of ... -
Combustion synthesis and properties of ferroelectrics, relaxor ferroelectrics & microwave resonator materials
Dielectric materials include ferroelectrics, relaxor ferroelectrics and microwave resonators which are classified on the basis of their dielectric performances like dielectric constant, dielectric loss and piezoelectric ... -
Metal cxhelates in vinyl polymerisation
A general kinetic scheme for the polymerization of vinyl monomers, initiated by dipivaloyl methane chelates of ferric and cupric, was postulated in Chapter III. The results of the spectral investigation complementary to ... -
Isonitroso-keto-imino Nicle (II) complexes-A study in ambidentate coordination.
In conclusion, it may be said that the isolation of the present complexes reveals the wider occurrence of linkage isomerism in isonitroso-p-keto-imine ligand complexes. These belong to the rare type of complexes where the ...