Search
Now showing items 1-10 of 41
Vanadium and chromium complexes supported by sterically demanding ligands : studies relevant to the reduction of dinitrogen to ammonia
(Massachusetts Institute of Technology, 2006)
Chapter 1. Using the [HIPTN3N]3- ligand ([HIPTN3N]3- = [(HIPTNCH2CH2)3N]3-; HIPT = 3,5-(2,4,6-i-Pr3C6H2)2C6H3 = HexaIsoPropylTerphenyl), green paramagnetic [HIPTN3N]V(THF) (1) can be prepared from VCl3(THF)3. Reduction of ...
Quantum dot-based nanomaterials for biological imaging
(Massachusetts Institute of Technology, 2006)
Quantum dot-based fluorescent probes were synthesized and applied to biological imaging in two distinct size regimes: (1) 100-1000 nm and (2) < 10 nm in diameter. The larger diameter range was accessed by doping CdSe/ZnS ...
Biological scaffolds for the peptide-directed assembly of nanoscale materials and devices
(Massachusetts Institute of Technology, 2006)
The utilization of biological factors in the design, synthesis and fabrication of nano-scaled materials and devices presents novel, large scale solutions for the realization of future technologies. In particular, we have ...
Gene expression-based screening of inhibitors of signal transduction
(Massachusetts Institute of Technology, 2006)
Advances in our understanding of cellular function and signal transduction have resulted in ever increasing number of therapeutical targets and, consequently, underscored a demand for simple and universally applicable ...
Mechanistic studies of the Class I ribonucleotide reductase from Escherichia coli
(Massachusetts Institute of Technology, 2006)
Ribonucleotide reductases (RNRs) catalyze the conversion of nucleotides to deoxynucleotides, providing the monomeric precursors required for DNA replication and repair. The class I RNRs are found in many bacteria, DNA ...
Synthetic and mechanistic study of catalytic dintrogen reduction
(Massachusetts Institute of Technology, 2006)
The dinitrogen reduction capability of a series of new triamidoamine based molybdenum compounds has been studied. The synthesis of a number of different triamidoamine ligands, and their resulting molybdenum compounds, is ...
Metal-based turn-on fluorescent probes for nitric oxide sensing
(Massachusetts Institute of Technology, 2006)
Chapter 1. Metal-Based Turn-On Fluorescent Probes for Sensing Nitric Oxide. Nitric oxide, a reactive free radical, regulates a variety of biological processes. The absence of tools to detect NO directly, rapidly, specifically ...
Synthesis and characterization of conducting polymers with new architectural motifs
(Massachusetts Institute of Technology, 2006)
Chapter one has a brief discussion of polythiophene and the important factors to consider with polythiophene synthesis and characterization. In chapter two, a variety of polythiophene derivatives that incorporated 2,2'-biphenyl ...
Biochemical characterization of the E. coli Very Short Patch Repair pathway and its coordination with methyltransferase repair of 0⁶-methylguanine
(Massachusetts Institute of Technology, 2006)
The E. coli Very Short Patch Repair (VSPR) system corrects T:G mismatches that arise through Dcm-mediated methylation and subsequent deamination of the underlined cytosine residue in the palindromic sequence 5'-CCWGG-3' ...
Early transition metal catalysts for the living polymerization of olefins and alkynes
(Massachusetts Institute of Technology, 2006)
Zirconium and Hafnium Ziegler-Natta catalysts containing the [(2,6- C12C6H3NCH2CH2)2NMe]2- ([ArciN2NMe]2') ligand were prepared and employed in the polymerization of 1-hexene. Hafnium Ziegler-Natta catalysts containing the ...