Abstract
Benzophenone is well known to produce benzopinacol upon light irradiation. We demonstrated that benzopinacol crystal was precipitated and grown from benzophenone in saturated EtOH / Water (1:1) solution by laser irradiation. The morphology of benzopinacol crystal was able to vary from polyhedral, skeletal, needle, to dendrite depending on the laser power. These phenomena were interpreted in terms of supersaturation of beazopinacol, and the processes of nucleation and growth were observed by measuring the dynamic light scattering.
