Search Results - darren johnson

6 Results Sort By:
A Facile Route to New and Old Cyclophanes from a Pnictogen-activated Self-Assembly Reaction
The well-defined topology and high strain of cyclophanes has found utility in a number of applications including asymmetric catalysis, insulating plastics, and organic electronics. Unfortunately, the field of cyclophane chemistry has been hindered by a lack of high yielding and functional group tolerant preparative methods for their synthesis. T...
Published: 1/16/2015   |   Inventor(s): Darren Johnson, Mary Collins, Matthew Carnes
Keywords(s):  
Category(s): Chemistry, Materials Science, Nanoscience & Microtechnologies, Sustainability & Cleantechnologies
Synthesis of Solution Precursors From Aluminum and Gallium Bulk Minerals/Materials
The inventors developed novel methods for producing Keggin-like structures containing 13 metal ions ranging from all Gallium to all Aluminum to mixed metals of metal ions including combinations of Gallium, Aluminum, and Indium. These clusters are preorganized with the desired stoichiometry, which makes them ideal synthetic precursors for thin film...
Published: 1/16/2015   |   Inventor(s): Darren Johnson, Shannon Boettcher, Brantly Fulton, Milton Jackson, Cory Perkins, Douglas Keszler
Keywords(s):  
Category(s): Chemistry, Materials Science
Phenyl SAMMS 2
The need to develop inexpensive and efficient filtration media is a high priority for researchers, and in turn offers a challenge for finding new, functional, designer materials that have high uptake capacities and selectivity for environmental contaminants. Phenyl SAMMS is one such high uptake, selective binding substrate. Self-Assembled Monol...
Published: 4/11/2011   |   Inventor(s): Darren Johnson
Keywords(s): ONAMI
Category(s): Chemistry
Tunable Phenylacetylene Scaffolds for Ion Binding
The Phenylacetylenes are a new class of organic compounds that are able to bind negatively charged molecules. The binding of anions is an important problem in chemistry for multiple reasons. For instance, many anions (such as perchlorate, nitrate, and pertechnetate) are environmental contaminants, and recovery of anions from a feed stream may e...
Published: 4/8/2011   |   Inventor(s): Michael Haley, Darren Johnson, Orion Berryman, Charles Johnson
Keywords(s):  
Category(s): Diagnostics, Chemistry
Heterometallic Group 13 Keggin-like Nanoclusters
The Johnson research group has developed a high-yielding synthetic strategy for preparing discrete polynuclear inorganic clusters containing thirteen Group 13 metals (Al, Ga, In) in a Keggin-like structure. Seven of the metal ions comprise the interior core, arranged in a flat hexagonal disc and bridged by hydroxo ligands. The remaining six m...
Published: 6/3/2009   |   Inventor(s): Darren Johnson, Jason Gatlin, Zack Mensinger
Keywords(s): Chemical, Materials Science, Nanoscience & Microtechnologies, ONAMI
Category(s): Physical Science
Tunable Phenylacetylene Scaffolds for Ion Binding updated with additional data
This technology encompasses a series of organic compounds for use in rapid detection of ions and small molecules. These compounds have a previously unknown framework that is modular and pre-organized to bind guests in its cavity. The modular nature of the framework permits easy synthetic variation of the compound structure and several of the...
Published: 5/27/2009   |   Inventor(s): Michael Haley, Darren Johnson, Orion Berryman, Charles Johnson, Calden Carroll Stimpson
Keywords(s):  
Category(s): Diagnostics