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125
A Self-Sorting Scheme Based on Tetra-Urea Calix[4]arenes

Y. Rudzevich, V. Rudzevich, F. Klautzsch, C. A. Schalley, V. Böhmer – 2009

Size and shape do matter: When dimerized in nonpolar solvents, an equimolar mixture of eleven tetra-urea calix[4]arenes with different wide-rim substituents self-sorts into only six out of 35 different homo- and heterodimers (see picture). Since the calixarene scaffold and the four urea units are the same in all cases, the self-sorting process is driven only by the cooperative action of steric requirements and stoichiometry.

Title
125
A Self-Sorting Scheme Based on Tetra-Urea Calix[4]arenes
Author
Y. Rudzevich, V. Rudzevich, F. Klautzsch, C. A. Schalley, V. Böhmer
Date
2009-04-09
Identifier
DOI 10.1002/jms.1616
Citation
Angew. Chem. Int. Ed. 2009, 48, 3867-3871; Angew. Chem. 2009, 121, 3925-3929