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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 ...
The role of mismatch repair and recombination in cellular responses to the DNA damaging anticancer drug Cisplatin
(Massachusetts Institute of Technology, 2002)
Cisplatin (cis-diamminedichloroplatinum(ll)) is a successful DNA-damaging anticancer drug used in the treatment of testicular, ovarian and other tumors. In the past decade, several mutually non-exclusive hypotheses have ...
Controlling the reactivity of Mo(III) with di- and tri-atomic molecules via sterically demanding ligands
(Massachusetts Institute of Technology, 2002)
Chapter 1. Molybdenum Dinitrogen Chemistry: Formation and Reactivity of (Ar[tBu]N)3MoN2- A collection of (Ar[tBu]N)3MoN2- compounds, supported with Na+, K+, Mg2+ and Ca2+ have been prepared through a variety of synthetic ...
Applications of planar-chiral heterocycles in asymmetric catalysis
(Massachusetts Institute of Technology, 2002)
The development of planar-chiral heterocycles for asymmetric catalysis and their applications to enantioselective processes were investigated. Reactions including the kinetic resolution of propargylic alcohols, the ...
Spectra and dynamics of calcium monochloride
(Massachusetts Institute of Technology, 2002)
The alkaline earth monohalides (MX) represent an ideal molecule for studying molecular Rydberg states, as they are well described as by an ion-core containing two closed shell atomic ions (M2+,X-) and an unpaired electron. ...
Intramolecular [4+2] cycloadditions of conjugated ynones and related species ; Studies directed toward the total systhesis of glycinoeclepin A
(Massachusetts Institute of Technology, 2002)
The intramolecular [4 + 2] cycloaddition reactions of c,-alkynyl carbonyl compounds are described. This reaction, the first heterocyclic variant of the enyne cycloaddition reaction, affords a product with a dihydroisobenzofuran ...