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BEGIN:VEVENT
UID:20250626T120636EDT-1323Vu21Vw@132.216.98.100
DTSTAMP:20250626T160636Z
DESCRIPTION:Abstract:\n\nStability under excitation is critical to nearly a
 ll applications of luminescent materials. Nonradiative decay pathways that
  cause photobleaching or decomposition limit the usefulness of organic sem
 iconductors in electronics\, bioimaging\, and photocatalysts. Here we desc
 ribe new pi-conjugated systems with locked planarity designed to limit non
 radiative decay. We use s-heptazines and imidazoacridines as strong electr
 on acceptors\, and azatriangulenes as electron donors to give materials ex
 hibiting thermally activated delayed fluorescence (TADF)\, room-temperatur
 e phosphorescence\, and two-photon absorption. These materials exhibit red
 uced photobleaching\, large two-photon cross-sections and photoluminescenc
 e quantum yields near 100%. We also use scanning tunneling microscopy on A
 g(111) to probe the electronic interactions of these materials on surfaces
 . This lecture will also describe the use of high-performance TADF materia
 ls in luminescent nanoparticles for bioimaging\, and as photocatalysts for
  high-energy organic transformations useful to drug discovery campaigns.\n
 \n \n\n \n\nBio:\n\nZachary M. Hudson is an Associate Professor and Canada
  Research Chair in Sustainable Chemistry at the University of British Colu
 mbia. Zac completed his B.Sc. at Queen’s University in Kingston\, Ontario.
  He remained at Queen’s to pursue a Ph.D. in Inorganic Chemistry with Prof
 . Suning Wang\, also holding graduate fellowships at Jilin University in C
 hina and Nagoya University in Japan. He then moved to the University of Br
 istol as a Marie Curie Postdoctoral Fellow with Prof. Ian Manners\, follow
 ed by a second Postdoctoral Fellowship at the California Nanosystems Insti
 tute at the University of California\, Santa Barbara with Prof. Craig Hawk
 er. He joined the faculty at UBC in 2015\, where he holds the Canada Resea
 rch Chair in Sustainable Chemistry. His research program develops luminesc
 ent materials for optoelectronics\, bioimaging\, and photocatalysis. Recen
 t awards for his work include the ACS Herman Mark Award in Polymer Science
 \, the Polymer International IUPAC Award\, and most recently the Charles M
 cDowell Medal for UBC’s top researcher under 40 in science and engineering
 .\n
DTSTART:20230919T170000Z
DTEND:20230919T183000Z
LOCATION:OM 10\, Maass Chemistry Building\, CA\, QC\, Montreal\, H3A 0B8\, 
 801 rue Sherbrooke Ouest
SUMMARY:Chemical Society Seminar: Zachary Hudson  - High-Performance Lumine
 scent Materials Using Structural Constraint
URL:/chemistry/channels/event/chemical-society-seminar
 -zachary-hudson-high-performance-luminescent-materials-using-structural-34
 9241
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