Sophie's work with metalloporphyrin/single-walled carbon nanotube sensors has been published in Chemistry of Materials. Chemiresistors are made from pristine SWCNTs or SWCNTs mixed with tetraphenylporphyrin and metal complexes (Cr-Zn) thereof. Upon exposure to vapors of organic compounds, the resistances across an array of these materials give unique patterns that allow discrimination between amines, ketones, alcohols, aromatics, and aliphatics. Congrats Sophie!
The Swager group's work with chemiresistive sensors has been expanded to carbon nanotube/metalloporphyrin composites that detect amines. These sensors are demonstrated to detect byproducts from meat spoilage over several days. Congrats Sophie!
Recently reported conductive metal-organic frameworks from Mirca Dinca's research group have been studied in the Swager group as chemiresistors. In this initial study, devices using [Cu3(hexaiminotriphenylene)2]n as the sensing element detect sub-ppm levels of ammonia. Good work, Sophie!
5th year graduate student Kelvin Frazier received MIT's annual Dr. Martin Luther King Jr. Leadership Award and was an invited speaker at the award ceremony. Congrats Kelvin!
Chemically actuated resonant devices, or CARDs, developed by graduate student Joe Azzarelli and postdoc Kat Mirica have been highlighted by the MIT News Office. Congrats Joe and Kat!
Yesterday, MIT's Materials Processing Center held a Materials Day symposium and poster session. Joe Azzarelli's poster on wireless sensing was judged to be one of the top three posters. Congrats Joe!
Previously, the Swager group reported mechanical abrasive deposition of gas sensors across gold electrodes. Now, as reported in Lab on a Chip, the entire circuit can be deposited by abrasion, using drawn graphite electrodes. In addition, the abrasive deposition has been demonstrated for a variety of organic and inorganic surfaces. The SWCNT-based chemiresistive components are able to detect and discriminate ppm amounts of nitrogenous vapors.
Former Swager group postdoctoral researcher Duncan den Boer and Tim have published a joint study on using scanning tunneling microscopy to measure deoxygenation of graphene oxide. Increasing deoxygenation levels was found to correlate with reduced apparent surface roughness. The full article was published in Chemistry of Materials.
Two papers from the Swager group were just published in the Journal of the American Chemical Society ASAPs: 19F NMR Fingerprints: Identification of Neutral Organic Compounds in a Molecular Container and Stereospecific Ring-Opening Metathesis Polymerization of Norbornadienes Employing Tungsten Oxo Alkylidene Initiators.