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Articles 1 - 4 of 4
Full-Text Articles in Inorganic Chemistry
Determining Bond Strengths And Dissociation Dynamics Of Diatomic Metal-Containing Ions By Photofragment Imaging, Schuyler P. Lockwood
Determining Bond Strengths And Dissociation Dynamics Of Diatomic Metal-Containing Ions By Photofragment Imaging, Schuyler P. Lockwood
Doctoral Dissertations
Studies of simple metal ion – ligand complexes have primarily focused on understanding their roles in activating C-H and C-C bonds. However, data are often lacking on the fundamental properties of these species, which can have unusual bond orders and cluttered electronic structures with many states of multi-reference character, complicating their treatment in theoretical studies. Experimental work determining high-precision bond energies, ground state identities and excited state dynamics of a wider variety of metal-containing ions is needed to establish a robust set of well-characterized benchmark molecules. This work describes studies of the energetics and dynamics of several MX+ species, …
Manipulating The Aliovalent Magnetic Dopants In Ti(Iv)-Based Oxide Nanocrystals, Muhammad Abdullah
Manipulating The Aliovalent Magnetic Dopants In Ti(Iv)-Based Oxide Nanocrystals, Muhammad Abdullah
Doctoral Dissertations
The intentional incorporation of impurities or dopants in semiconductors is fundamental to manipulate the properties that render them useful for spintronics, photocatalysis, and optoelectronics. One long-standing challenge in integrating the doped semiconductors in various applications is the design of materials with controlled individual dopant properties such as dopants speciation, valence state, and spin dynamics. Despite several elegant studies to circumvent these material challenges, the quest for new materials with tunable dopant properties to address the theoretical and experimental understanding continues. In this work, we combine synthetic chemistry and various spectroscopies to study a class of materials possessing both substitutional magnetic …
Providing Molecular Insight For Understanding Anion Exchange Membrane Conductivity, Michael Kwasny
Providing Molecular Insight For Understanding Anion Exchange Membrane Conductivity, Michael Kwasny
Doctoral Dissertations
Anion exchange membranes (AEMs) are notorious for having both low alkaline stability and poor ion conductivity in fuel cell operation conditions, with solutions to these two challenges often being developed independent of each other. The chemical instability of an AEM is viewed through degradation of the polymer backbone and the cationic species and improving a material’s stability is approached by altering the polymer backbone, the cation, or both. On the other hand, poor ion conductivity is typically addressed by modifying bulk membrane properties such as increasing the ion exchange capacity (IEC), changing the morphology, or increasing the water uptake. These …
Modulating Dopant-Defect Interactions In Transition Metal Doped Colloidal Strontium Titanate Nanocrystals, William Harrigan
Modulating Dopant-Defect Interactions In Transition Metal Doped Colloidal Strontium Titanate Nanocrystals, William Harrigan
Doctoral Dissertations
Perovskites such as strontium titanate, a wide band gap semiconductor have been widely studied due to the multitude of potential applications in photocatalysis, multiferroics, sensing, and microelectronics. Various novel optical, electrical and magnetic properties can be imparted through the introduction of different transition metal dopant ions. The introduction of these impurities has been shown to impart functionality for various applications. The use of Cr3+has been shown to introduce defect levels into the band structure of SrTiO3and increase visible light utilization for photocatalysis. Transition metal doped highly crystalline colloidal SrTiO3nanocrystals (NC) were synthesized using two …