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DTSTAMP:20250625T030137Z
DESCRIPTION:Abstract:\n\nThe incorporation of boron into conjugated organic
  molecules has emerged as a useful strategy to elicit valuable optical and
  electronic properties which cannot be observed with the analogous all-car
 bon systems. We have synthesized\, structurally characterized\, and assess
 ed the aromaticity and optical properties of unusual borafluorene cations\
 , radicals\, and anions. Our primary goal has been to isolate molecules in
  rare electronic states and to provide a link between structure and functi
 on. We have now initiated efforts aimed at understanding the chemical reac
 tivity of these 5- and 6-membered boron-containing rings\, as well as rele
 vant BN- and BP-incorporated analogues. Recently\, we discovered that bore
 nium ions can be tailored such that the serve as viable stimuli-responsive
  materials\, possessing thermo-chromic and/or -luminescent properties. In 
 addition to reduced borafluorenes\, we have isolated electronically distin
 ct borepin radicals and anions (i.e.\, 7-membered boron-containing rings).
  While the anions would formally be 8π electron anti-aromatic systems\, th
 e unique non-planar boat-shaped confirmation results in non-aromatic molec
 ules. This lecture will cover our most recent results in these research ar
 eas\, including our emerging studies on boraacenes and π-extended multi-bo
 ron-doped systems.\n\n \n\nBio:\n\nProf. Robert J. Gilliard\, Jr. is the N
 ovartis Professor of Chemistry at Massachusetts Institute of Technology (M
 IT). Prior to joining MIT\, he was a member of the faculty at the Universi
 ty of Virginia. He obtained his bachelor’s degree in chemistry at Clemson 
 University where he was an undergraduate researcher in the laboratory of P
 rof. Rhett C. Smith. He earned his doctorate in chemistry at The Universit
 y of Georgia with Prof. Gregory H. Robinson. Gilliard was a Merck Postdoct
 oral Fellow and a Ford Foundation Postdoctoral Fellow where he completed h
 is studies working jointly at the Swiss Federal Institute of Technology (E
 TH Zürich) with Prof. Hansjörg Grützmacher and at Case Western Reserve Uni
 versity with Prof. John Protasiewicz. He has received several awards and h
 onors. Recent national and international awards include Chemical and Engin
 eering News Talented 12 Scholar\, Research Corporation for Science Advance
 ment Scialog Collaborative Innovation Award\, National Science Foundation 
 CAREER Award\, Alfred P. Sloan Research Fellow\, Organometallics Distingui
 shed Author Award\, Beckman Young Investigator Award\, Packard Fellowship 
 for Science and Engineering\, Lloyd N. Ferguson Award for Excellence in Re
 search\, and the 2023 ACS Harry Gray Award for Creative Work in Inorganic 
 Chemistry. He also serves on the editorial advisory board for Chemical Com
 munications\, Chem Catalysis\, Inorganic Chemistry\, Chemical Science\, An
 gewandte Chemie\, and the Journal of the American Chemical Society.\n
DTSTART:20241001T170000Z
DTEND:20241001T183000Z
LOCATION:OM 10\, Maass Chemistry Building\, CA\, QC\, Montreal\, H3A 0B8\, 
 801 rue Sherbrooke Ouest
SUMMARY:Chemical Society Seminar: Robert Gilliard- Uncommon Bonds in Boron 
 Heterocycles: From Odd-Electron Molecules to Luminescent Materials
URL:/chemistry/channels/event/chemical-society-seminar
 -robert-gilliard-uncommon-bonds-boron-heterocycles-odd-electron-molecules-
 358412
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