It is with great sadness that we have to announce that two of our member passed away recently.


"In the study of free radicals and other unstable substances, an inherent difficulty is the maintenance of a suitable concentration... The intent of the [matrix isolation] method is to trap active molecules in a solid matrix of inert material, crystalline or glassy... The active material can be produced in a variety of ways: by chemical reaction involving two reactants, by pyrolysis, by dissociation in a glow discharge or an arc, or by photolysis." 

E. Whittle, D.A. Dows, and G. C. Pimentel, 
J. Chem. Phys. 22, 1943 (1954). 

George C. Pimentel 1922-1989
Picture taken by M.E.Jacox of portrait by Dorothy Davis which hangs in Pimentel Hall at U.C. Berkeley.