A thermodynamic analysis of the mechanism of formation of homologs of the cucurbit[ n]uril family
Abstract
A mechanism of the formation of cyclic cavitand CB[ n] macromolecules based on the aggregation in solution of monomeric hydrate derivatives of glycoluril and formaldehyde was suggested. A quasi-chemical description of the formation of macrorings led us to conclude that the formation of the population of a definite CB[ n] homolog was controlled by the solution composition. For this reason, homologs were formed in closed systems sequentially, first higher and then lower homologs, and the stable CB[6] macroring formed at the last stage of the process. Nucleation theory was used to describe the sequential formation of homolog solid phases. The use of open systems allows stationary conditions to be created for the formation of individual homologs by maintaining a constant solution composition.
- Publication:
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Russian Journal of Physical Chemistry A
- Pub Date:
- October 2007
- DOI:
- 10.1134/S003602440710007X
- Bibcode:
- 2007RJPCA..81.1586B