Sulfur-based materials for infrared optics and thermal imaging. This project aims to investigate novel sulfur polymers for use in infrared optics and thermal imaging. Current thermal imaging lenses are made in energy-intensive processes from expensive semiconductors and toxic chalcogenide glasses. In contrast, highly abundant elemental sulfur can be converted into polymers that are highly transparent to mid- and long-wave infrared light, providing a promising low-cost alternative. In developing ....Sulfur-based materials for infrared optics and thermal imaging. This project aims to investigate novel sulfur polymers for use in infrared optics and thermal imaging. Current thermal imaging lenses are made in energy-intensive processes from expensive semiconductors and toxic chalcogenide glasses. In contrast, highly abundant elemental sulfur can be converted into polymers that are highly transparent to mid- and long-wave infrared light, providing a promising low-cost alternative. In developing this technology, expected outcomes include novel methods to manufacture polymers from low-cost sulfur and their use as lenses for thermal imaging. Significant benefits are expected, such as access to low-cost, recyclable materials for thermal imaging required in surveillance, diagnostics, and spectroscopy.Read moreRead less
Unusual trisulfide chemistry. This project aims to investigate the mechanism of an unexpected reaction of trisulfides with common amide-containing solvents. Specifically, these solvents (such as dimethylformamide) were discovered to cleave S-S bonds in trisulfides and related polysulfides. This project expects to generate new knowledge in the understanding of the reaction mechanism and then use that understanding for useful chemistry. Expected outcomes of this project include a mechanistic under ....Unusual trisulfide chemistry. This project aims to investigate the mechanism of an unexpected reaction of trisulfides with common amide-containing solvents. Specifically, these solvents (such as dimethylformamide) were discovered to cleave S-S bonds in trisulfides and related polysulfides. This project expects to generate new knowledge in the understanding of the reaction mechanism and then use that understanding for useful chemistry. Expected outcomes of this project include a mechanistic understanding of a new reaction, and the use of this chemistry in polymer synthesis and polymer recycling. This project should provide significant benefits in new knowledge, as well as support new strategies in polymer synthesis and recycling to benefit the environment.Read moreRead less