Search
Now showing items 171-180 of 269
The functionalization of fullerenes and nanocarbon materials for photovoltaics and other applications
(Massachusetts Institute of Technology, 2015)
Fullerenes and other nanocarbon materials such as carbon nanotubes possess interesting chemical and physical properties. In this thesis, we explore various functionalization methods for nanocarbon materials and their ...
Toward ultra-broadband photoacoustic spectroscopy of supercooled liquids
(Massachusetts Institute of Technology, 2015)
Theoretical understanding of the dramatic slow-down of structural relaxation dynamics in supercooled liquids leading to the glass transition is limited in part by the lack of data in these systems. Between the melting point ...
Functionalization and fabrication of single-walled carbon nanotube-based chemiresistors for sensory applications
(Massachusetts Institute of Technology, 2015)
Chemical sensors that identify and monitor volatile organic compounds (VOCs) have an important role in assessing public security, food and water quality, industrial environment, and health. The fabrication of carbon-based ...
Translating semiconductor device physics into nanoparticle films for electronic applications
(Massachusetts Institute of Technology, 2014)
This thesis explores and quantifies some of the important device physics, parameters, and mechanisms of semiconductor nanocrystal quantum dot (QD) electronic devices, and photovoltaic devices in particular. This involves ...
Spatially restricted proteomic mapping of excitatory and inhibitory post-synaptic termini through enzymatic labeling
(Massachusetts Institute of Technology, 2016)
The neuronal synapse is the seat of cognitive computation in the brain, where the minor adjustments in electrical activity between various neuronal circuits results from the sophisticated orchestration of molecules at the ...
Taming reactive phosphorus intermediates with organic and inorganic carriers
(Massachusetts Institute of Technology, 2015)
Complexes (THF)₀-₂E[P₃Nb(ODipp)₃]₂ (E = Sn, Pb; Dipp = 2,6-iPr₂C₆H₃) were prepared and characterized as potential precursors to new tetrel phosphides. Treatment of (THF)Sn[P₃Nb(ODipp)₃]₂ with pyridine-N-oxide effected the ...
Dynamically motivated spectroscopy of small polyatomic molecules
(Massachusetts Institute of Technology, 2015)
Molecular vibrational dynamics far from equilibrium, or in the vicinity of saddle points, are of utmost importance in chemistry. However, most of the standard models used by chemists only perform well near local minima in ...
The mechanism of the reaction of aryl halides with metallic amides. II. Transannular effects in the solvolysis of cis- and trans-cycloöctene oxide
(Massachusetts Institute of Technology, 1954)
Synthesis of pyridines and azaindoles via Diels-Alder reactions of tosyl cyanide with vinyl- and heteroarylallenes
(Massachusetts Institute of Technology, 2019)
Pyridines are an important class of heterocycle with widespread applications in a variety of areas. The efficient synthesis of highly substituted pyridines is an ongoing goal of modem synthetic chemistry. Part I of this ...
Structural investigations of class la ribonucleotide reductases by electron microscopy
(Massachusetts Institute of Technology, 2019)
Ribonucleotide reductase (RNR) catalyzes the reduction of nucleotides to their 2'-deoxynucleotide counterparts. The class la RNR from Escherichia coli is composed of two homodimeric subunits [alpha]2 and [beta]2 that form ...