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Solid-state NMR investigations of the bacteriorhodopsin photocycle
(Massachusetts Institute of Technology, 2002)
Bacteriorhodopsin (bR) is a heptahelical integral membrane protein with a retinylidene prosthetic group from H. salinarum. The protein creates a proton gradient across the cell membrane by harvesting light energy. Proton ...
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 ...
Spectroscopic investigations of the X and A state dynamics of ¹³C₂H₂
(Massachusetts Institute of Technology, 2002)
The objective of the experiments described in this thesis is to perform a detailed spectroscopic study of the dynamics on the A and X state surfaces of 13C2H2 in order to further understand the acetylene - vinylidene ...
Complexation, coupling, and cleavage of organonitriles, alkynes, dinitrogen, hydrostannanes or phosphines by three-coordinate molybdenum(III) complexes
(Massachusetts Institute of Technology, 2002)
Fabrication and characterization of quantum-confined optoelectronic devices based on CdSe nanocrystals
(Massachusetts Institute of Technology, 2002)
Colloidal semiconductor quantum dots (QDs), or nanocrystals (NCs), are the subject of intense research for their novel size dependent optical and electronic properties. Since the development of synthetic methods to produce ...
Synthesis and utility of electronically diverse polycyclic aromatics
(Massachusetts Institute of Technology, 2002)
This dissertation examines the synthesis of electronically diverse polycyclic aromatics within discrete molecular regimes and as incorporated into robust conjugated polymers. We have pursued two strategies for obtaining ...
Dynamics and spectra in condensed phases : single molecule spectroscopy, electron transfer, and excitation energy transfer
(Massachusetts Institute of Technology, 2002)
In this thesis, several problems regarding dynamics and spectra in condensed phases are theoretically analyzed via analytical models. The thesis consists of four main topics. First, a theoretical description of single ...
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 ...
Solution and solid-phase synthesis of potential carbohydrate vaccines for leishmaniasis and malaria
(Massachusetts Institute of Technology, 2002)
The human disease leishmaniasis afflicts over 20 million people worldwide, and is caused by unicellular protozoan parasites. Cell surface carbohydrates are implicated in immune recognition of the parasite by host macrophages. ...
The synthesis and investigation of the electronic properties of crown ether, [2]-catenane, and [2]-rotaxane architectures
(Massachusetts Institute of Technology, 2002)
Scope. The body of work described in this thesis focuses on the synthesis of donor-acceptor architectures of the pseudorotaxane, rotaxane, and catenane genres. The binding constants of thiophene and phenylene-ethynylene ...