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