Browsing Division of Chemical Sciences by Title
Now showing items 436-455 of 912
-
Modeling Electronic Properties Of Strongly Correlated Conjugated Molecular Systems
(2015-08-17)Organic conjugated systems are attractive because of wide range of applications, which includes stimulated emission from -conjugated polymers, optical switches, organic solar cells and organic light emitting diodes, to ... -
Modeling Magnetic Anisotropy in Single Chain Magnets
This thesis embodies work on modeling magnetic anisotropy in molecular magnets. Understanding the factors that govern the magnitude of anisotropy in these materials is crucial for tailoring molecules that can be used in ... -
Modelling Stochasticity In Selected Biological Processes
(2010-08-16)Biological processes at the cellular level take place in heterogeneous environments, and usually involve only a small number of molecules. They tend to exhibit strong time dependent fluctuations, as a result, and are, ... -
Modular Design Of Fluorescent Cation Sensors On A Bile Acid Scaffold
(2011-08-05)Bile acid-based cation sensors involving through space photo-induced electron transfer (PET) processes have been synthesized. In this approach, appropriate known fluorophores and aza crown ether receptor units were attached ... -
Modulation of Nanostructures in the Solid and Solution States and under an Electron Beam
(2018-03-26)Among various nanomaterials, metal nanoparticles are the widely studied ones because of their pronounced distinct properties arising in the nanometer size regime, which can be tailored easily by tuning predominantly their ... -
Molecular Approaches and Structural Insights into Correlated Triplet Pair Dynamics in Intramolecular Singlet Fission
Singlet Fission (SF) is a bichromophoric process whereby a singlet exciton is converted to two triplet excitons through an overall spin-conserved process. The last decade has seen an upsurge in SF research driven by its ... -
Molecular Construction Using Carbene and Diboron Systems: Catalytic Transformation of C-C and C-Hetero Atom Bonds
The thesis presents an unconventional approach for the molecular construction using carbenes as the carbon source, and water as the hydrogen source. A gold-catalyst has been used to transfer the carbenes to effect ... -
Molecular Dynamics Studies of Diffusion in Confined Regions
Diffusion of guest molecules under confinement of zeolites shows many interesting properties due to guest-host interactions. This thesis explores some of these interesting behaviours relating to the diffusion of guest ... -
Molecular Expression Through Fluorescence: Studies In Probe Design And Aggregation
(2007-12-29)The present thesis entitled, "Molecular expression through fluorescence: Studies in probe design and aggregation" describes very simple bi-functional donor-acceptor poly-aromatic fluorophores that have been shown to possess ... -
Molecular Modulation Of Material Properties: Studies On Nanoparticles, Nanoassemblies, And Low Molecular-Mass Gelator
(2007-11-19)The present thesis titled “Molecular Modulation of Material Properties: Stud- ies on Nanoparticles, Nanoassemblies and Low Molecular Mass Gelator” deals with the preparation, characterization, and investigations into the ... -
Molecular Simulations Of Temperature Induced Disorder And Pressure Induced Ordering In Organic Molecular Crystals
(2007-09-05)Crystallographically solids with well defined crystal structures are normally assumed to be highly ordered. However, it is not uncommon to find considerable degree of disorder amongst many of these crystalline substances. ... -
Molecularly Imprinted Polymers Based On Fluorescent And Template Binding Cross-Linker
(2013-05-23)The synthesis of materials with molecular recognition properties has become a topic of great technological and scientific interest. Molecular imprinting is one of the most effective strategies in preparing highly selective ... -
Molten-salt Synthesis Of Nanocrystalline Strontium Antimony Manganese Oxide (Sr2SbMnO6) : A Gaint Dielectric Constant Material
(2010-12-03)High dielectric constant materials are of technological importance as they lead to the miniaturization of the electronic devices. For instance, in the case of memory devices based on capacitive components, such as static ... -
Multifunctionalities Of Ceramics And Glass Nanocrystal Composites Of V2O5 Doped Aurivillius Family Of Ferroelectric Oxides
(2011-09-19)In recent years bismuth-based, layer-structured perovskites such as SrBi2Nb2O9 (SBN) and SrBi2Ta2O9 (SBT) have been investigated extensively, because of their potential use in ferroelectric random access memories (FeRAMs). ... -
Multifunctionalities Of Telllurite And Borate Based Glasses Comprising Nano/Micro Crystals Of Tetragonal Tungsten Bronze-Type Ferroelectric Oxides
(2011-01-17)Transparent glasses embedded with TTB structured ferroelectric nano/micro crystals (K3Li2Nb5O15, Ba5Li2Ti2Nb8O30) were fabricated in various tellurite and borate based glass matrices and characterized for their physical ... -
Multilayers And Artificial Superlattices Of Lead Magnesium Niobate-Lead Titanate Based Relaxors
(2009-03-05)The present research work mainly focuses on fabrication of compositionally modulated multilayers of (l−x) Pb(Mgi/3N2/3)O3 - x PbTiO3 (PMNPT) through multi target pulsed laser ablation technique. Heterostructures like ... -
N-Heterocyclic Carbene (NHC)-Catalyzed Stereoselective Synthesis of Six-Membered Heterocycles and Carbocycles
N-Heterocyclic carbene (NHC) based catalysis is employed for the generation of α,β-unsaturated acylazoliums followed by their interception with various nucleophiles, the formal [3+3] annulation reactions for the construction ... -
N-Heterocyclic Carbene-Catalyzed Enantioselective Synthesis of Dihydrothiopyranones, Functionalized Benzofurans and Extending Michael Acceptor Aldimine Umpolung
Carbenes exhibit high reactivity as divalent species with six electrons in their valence shell. Their electrophilic nature arises from an incomplete octet. However, when a heteroatom is introduced adjacent to the carbene ... -
N-Heterocyclic Carbene-Catalyzed Synthesis of Oxazolones, e-Lactones and N-N Axially Chiral Molecules
The diverse reactivity of N-heterocyclic carbenes (NHCs) in organocatalysis is due to the possibility of different modes of action. Although NHC-bound enolates and dienolates were well-known, the NHC-bound cross-conjugated ...