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Full-Text Articles in Physical Sciences and Mathematics
Investigations Of Thioether Generation For S-D-Ribosyl-L-Homocysteine Synthesis, Brendan Corcoran
Investigations Of Thioether Generation For S-D-Ribosyl-L-Homocysteine Synthesis, Brendan Corcoran
Master's Theses
Creation of the thioether linkage is a fundamental step for the chemical preparation of the bacterial quorum sensing molecule S-D-ribosyl-L-homocysteine (SRH). Although previous preparations of SRH and its analogues have been reported in the literature, they employ assorted methods with varied results. Therefore, a reassessment of the methodology used for synthetic preparation of the thioether bond in SRH-like molecules is here considered. This work examines four methods of thioether generation following two mechanisms, bimolecular nucleophilic substitution (SN2) and radical-initiated thiol-ene coupling, in an attempt to generate SRH in a more efficient and reproducible manner. Both mechanisms address …
Latent Cysteine Residues From Polymers Prepared Via Free And Controlled Radical Polymerizations, Douglas Vincent Amato
Latent Cysteine Residues From Polymers Prepared Via Free And Controlled Radical Polymerizations, Douglas Vincent Amato
Master's Theses
One less commonly used “click” reaction is thiazolidine chemistry. Thiazolidine chemistry is a commonly used reaction used in biological systems because the reaction requires the presence of both cysteine (a common amino acid) and an aldehyde or ketone. If cysteine residues could be incorporated into a polymer then a variety of applications could be developed. Polymers containing free thiols (aka thiomers) have developed in the last decade to become great mucoadhesives. If there was a facile route to control the amount of free thiols along the polymer then more fine-tuned and potentially stronger adhesives could be made. For these reasons …
The Synthesis Of A Homologous Series Of Alkyl Lumazines And Their Application To The Dispersion Of Carbon Nanotubes, William P. Kopcha
The Synthesis Of A Homologous Series Of Alkyl Lumazines And Their Application To The Dispersion Of Carbon Nanotubes, William P. Kopcha
Master's Theses
In this thesis, the synthesis of a series of alkyl lumazine surfactants (LCn) is reported. Their application to the dispersion of both CoMoCAT and HiPco single-walled carbon nanotubes (SWNTs) is examined in detail and the thermal stability and chirality selection properties of dispersions made with these surfactants were compared both between themselves and with an alkyl flavin surfactant (FC12). Lumazine alkyl chain length exhibited some control over the quality and the quantity of SWNTs dispersed. LC10 was deemed most appropriate for comparison with FC12 based on considerations of solubility and nanotube individualization. …