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SUMMARY:Boron in functional materials: from clusters and catalytic interfa
 ces to ultra-hard alloys
DTSTART:20160323T163000
DTEND:20160323T173000
DTSTAMP:20260415T081431Z
UID:1cf23f5f79db8da9dedc560477539df7e6562c323b2bd0c2e286a8a2
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Anastassia Alexandrova\nDepartment of Chemistry and Bioc
 hemistry\, University of California\, Los Angeles\, USA\nAnastassia Alexa
 ndrova\nDepartment of Chemistry and Biochemistry\, University of Californi
 a\, Los Angeles\, and California NanoSystems Institute\nBoron is a unique 
 element in its extreme tendency to form both covalent\, and delocalized ch
 emical bonds. It is a small atom\, similar to C in many ways\, and yet wit
 h electronegativity similar to such transition metals as Pt. The chemistry
  of B therefore keeps brining new surprises. We will show how all-B cluste
 rs have unusual\, flat shapes\, how the electronic structure of these clus
 ters can be exploited to create cluster motors\, and how B completely chan
 ged the shape and properties of metal clusters. It will be demonstrated ho
 w B-metal interactions then can be harvested in the design of new catalyst
 s resistant to deactivation\, as well as interesting surface alloys and ne
 w 2D materials. Finally\, B-metal interactions lead to the formation of ul
 tra-hard materials that can scratch diamond. All these findings come from 
 exploiting the electronic structure in a strategic way\, and in close coll
 aboration between theory and experiment.
LOCATION:CH G1 495 https://plan.epfl.ch/?room==CH%20G1%20495
STATUS:CONFIRMED
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