Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 15 of 15 for “"electronic absorption spectroscopy"”.
-
INVESTIGATING PROTEIN - BILAYER COMPLEXES: A STUDY OF LIGAND - RECEPTOR INTERACTIONS AT MODEL MEMBRANE SURFACE BY USING ELECTRONIC ABSORPTION SPECTROSCOPY AND FLUORESCENCE RESONANCE ENERGY TRANSFER.
… (PDA) liposomal nanoparticles using changes in electronic absorption spectroscopy and fluorescence resonance energy transfer (FRET). We study the effect of mode of linkage (covalent versus noncovalent) between the receptor and liposome bilayer. We also examine the effect of size-dependent …
-
Comparative Electrochemistry, Electronic Absorption Spectroscopy and Spectroelectrochemistry of the Monometallic Ruthenium Polypyridyl Complexes, [Ru(Bpy)(Dpb)2](Pf6)2, [Ru(Bpy)2(Dpb)](Pf6)2, [Ru(Bpy)2(Dpq)](Pf6)2, [Ru(Bpy)(Dpq)2](Pf6)2
… purification purposes. Liquid secondary ion mass spectroscopy was used to confirm identity of compounds. The new compound contained 1% electroactive impurity as determined by OSWV. Spectroelectrochemical studies were conducted with both a bulk H-cell and a ~0.2 mm pathlength, optically transparent …
-
Reactions of centralite in aged propellants
… of two-dimensional thin-layer chromatography and electronic absorption spectroscopy. A second purpose was to obtain material balances for the stabilizer in these propellants • A third objective was to devise a rapid, accurate and convenient method for determining the age of triple-base …
-
Synthesis of novel pendant arm macrocyclic ligands as potential models for enterobactin
… The ferric complexes were characterized by electronic absorption spectroscopy. The second series of ligands described are based on the pendant arm macrocyclic ligand, 1, 4, 7-triaminoethyl-1, 4, 7- triazacyclononane. New routes to the preparation of this ligand were investigated; the best …
-
High-pressure studies of solid state reactions in organometallic copper(II) and nickel(II) systems
… copper(II) and nickel(II) complexes. Electronic absorption spectroscopy is used to assess configuration and changes in configuration induced by pressure. Pathways for solid state isomerizations reactions are discussed. Studies of polycrystalline complexes and of some of the complexes …
-
Synthesis and Electrochemical Properties of {[(bpy)₂Ru(dpp)]₂RhCl₂}(PF₆)₅: A Light Absorber - Electron Collector - Light Absorber Triad AND Development and Evaluation of Integrated Molecular Modeling, Synthesis, and Characterization Laboratory Experiments for the Undergraduate Chemistry Curriculum
… and characterized using electrochemistry and electronic absorption spectroscopy. The electrochemical properties of {[(bpy)2Ru(dpp)]2RhCl₂}(PF6)5 were probed with cyclic voltammetry and bulk electrolysis studies to investigate the behavior of the system upon two-electron reduction of the …
-
Polyazine-Bridged Ru(II),Pt(II) Trimetallic and Tetrametallic Supramolecular Complexes Exhibiting Unusual Excited State Dynamics Important in Catalysis and PDT Drug Development
… critical in understanding the electrochemistry, spectroscopy, and excited state dynamics of multi-metallic, multi-ligand complexes. Electrochemical analysis of the [{(TL)2Ru(dpp)}2Ru(BL")PtCl2]6+ complexes suggests a HOMO localized on the terminal Ru centers (E1/2 (RuII/III) = 1.56-1.63 V vs. …
-
ELECTRONIC MATRIX ISOLATION SPECTROSCOPIC STUDIES OF METAL ATOM PHOTOCHEMISTRY
… (1) the final design of an ultraviolet-visible absorption and emission matrix isolation apparatus is described, (2) by employing this apparatus, molecular scale interactions of the 1:1 metal-water adduct are investigated utilizing electronic absorption spectroscopy, and (3) molecular orbital and …
-
Palladium catalysis in the synthesis of polyaniline-related materials
… upon oligomer behavior have been investigated by electronic absorption spectroscopy and cyclic voltammetry. Certain aspects of aryl amination methodology, arising from or applicable to the synthesis of polyaniline derivatives, are described. Commercially available benzophenone imine serves as a …
-
Multimetallic Supramolecular Complexes: Synthesis, Characterization, Photophysical Studies and Applications in Solar Energy Utilization and Photodynamic Therapy
… method and characterized by mass spectrometry, electronic absorption spectroscopy, and electrochemistry. Incorporating different functional units into complex systems allowed these multimetallic supramolecules to perform various light activated tasks including DNA cleavage and hydrogen …
-
Probing the Ultrafast Dynamics of Higher-Lying Excited States of Molecular Switches with Femtosecond Stimulated Raman Spectroscopy
… are measured by resonance transient Raman spectroscopy and provide information on the dynamics of the system following two-photon sequential excitation through mode-specific enhancements. Sequential excitation allows for optical control of the system by accessing more efficient reaction …
-
Transition Metal Complexes Anchored on Europium Oxide Nanoparticles
… metal complexes were characterized using 1H NMR spectroscopy, mass spectrometry, electronic absorption spectroscopy and electrochemistry. The 1H NMR spectra of the complexes were consistent with those of their ruthenium analogs. Mass spectra contain fragmentation patterns of the (M-PF6)+ …
-
Tuning the Photophysical and Biological Properties of a Series of Ruthenium-Based Chromophores and Chromophore Coupled Cisplatin Analogs with Substituted Terpyridine Ligands
… synthesized using a building block approach. Electronic absorption spectroscopy of these types of complexes displayed intense ligand-based transitions in the UV region and metal to ligand charge transfer (MLCT) transitions in the visible region. The Ru to dpp MLCT transitions in RuIIPtII …
-
The Design, Synthesis and Study of Mixed-Metal Ru,Rh and Os, Rh Complexes with Biologically Relevant Reactivity
… characterized and studied by electrochemistry, electronic absorption spectroscopy, ESI-mass spectrometry, steady-state and time-resolved emission spectroscopy. Ï¿" ï¿" The electrochemical properties of bimetallic complexes with polyazine ligands exhibit a reversible one-electron metal-based …
-
Probing the Redox and Photophysical Properties of Ru(II)-Pt(II) Supramolecular Complexes as Efficient Photodynamic Therapy Agents
… TL reductions remain generally unperturbed. The electronic absorption spectroscopy for the [(Ph₂phen)₂Ru(dpq)PtCl₂](PF₆)₂, BL = dpp or dpq, complexes is dominated in the UV region by Ph₂phen (274 nm) and BL-based (310-320 nm) π⟶ π* transitions and in the visible region by metal-to-ligand charge …