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Novel II-IV semiconductor nanocrystal gain media : from amplified spontaneous emission to lasing
(Massachusetts Institute of Technology, 2002)
This thesis details efforts in using cadmium selenide (CdSe) nanocrystallites (NCs) as a novel lasing media. We begin with the synthesis of polymer/NC composites, in which the NCs are stabilized within a long-chain ...
Application of a palladium/tri-tert-butylphosphine catalyst system towards mild and general methods for carbon-carbon bond formation
(Massachusetts Institute of Technology, 2002)
Our research over the last four years has been focused on the development of mild and general methods for conducting palladium-catalyzed carbon-carbon bond forming reactions utilizing the bulky and electron-rich ...
Structure and dynamics studies by solid-state nuclear magnetic resonance spectroscopy
(Massachusetts Institute of Technology, 2002)
The major goal of this work is the development of high resolution solid state 205T1 NMR techniques and their application to the elucidation of the mechanism and dynamics of ion exchange in biological solids. The thesis ...
Application of sensitive spectroscopic techniques to intramolecular dynamics and combustion kinetics
(Massachusetts Institute of Technology, 2002)
Modifications of Cavity Ringdown Spectroscopy (CRD) for use in the UV region are discussed. These modifications partially overcome the low sensitivity of CRD in the UV (due to lower mirror reflectivity, R - 0.99) by removal ...
Organization and dynamics of the bacteriophage Mu transpososome
(Massachusetts Institute of Technology, 2002)
Transposition of a linear mobile genetic element, such as the bacteriophage Mu, requires a set of spatially and temporally coordinated DNA phosphoryl transfer reactions to move the element from an existing DNA location to ...
Small-molecule activation chemistry catalyzed by proton-coupled electron transfer
(Massachusetts Institute of Technology, 2002)
Proton-coupled electron transfer (PCET) is the basic mechanism for bioenergetic conversion. Consummate examples include water oxidation in photosynthesis and oxygen reduction in respiration. Despite the importance of PCET ...
Living α-olefin polymerization by cationic zirconium and hafnium complexes containing chelating diamidopyridine ligands
(Massachusetts Institute of Technology, 2002)
Theoretical and experimental studies of heterogeneous chemical processes leading to stratospheric ozone depletion
(Massachusetts Institute of Technology, 2002)
The microscopic chemical mechanisms of heterogeneous reactions involving HC on crystalline ice and nitric acid trihydrate (NAT) are of fundamental interest to physical chemists, because such reactions yield "active" chlorine ...
Applications of C₂-symmetric bis(azaferrocenes) in asymmetric copper-catalyzed reactions
(Massachusetts Institute of Technology, 2002)
Based on a strategy developed in our group for the desymmetrization of planar heterocycles, we have designed, synthesized, and resolved a number of bidentate, C2-symmetric planar-chiral bis(azaferrocenes) that bear a ...
Ligand variation in molybdenum asymmetric ring-closing metathesis catalysts
(Massachusetts Institute of Technology, 2002)