COLL 423 |
| The enantiomers of compounds that crystallize as conglomerates crystallize at different rates in the presence of an appropriate chiral impurity. During this process, the optical activity of the solution and the solid phase increases and then falls to zero. This transient optical activity happens on a time in the range 15-20 minutes. We present a general theory to describe this process. Our formulation is founded on basic theories of nucleation, crystal growth and Langmuir adsorption. A computer code based on this theory is capable of describing both the time-evolution of a single run of crystallization and the stochastic behavior observed in many crystallization runs; it also gives the crystal size distribution. |
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Chirality and Enantioselectivity at Surfaces
2:00 PM-5:25 PM, Tuesday, 12 September 2006 Sir Francis Drake -- Windsor Room, Oral
Division of Colloid & Surface Chemistry |