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Self-assembly of a hexameric aggregate of a lipophilic calix[4]pyrrole-resorcinarene hybrid in solution: a diffusion NMR study.

The lipophilic calix[4]pyrrole-resorcinarene hybrid 1b, the extended analogue of resorcin[4]arene 2b, was synthesized for the first time, and its self-assembly in solution was studied using (1)H and diffusion NMR. It was found that 1b self-assembles to hexameric aggregates in CDCl(3) solution. The interaction of trialkylamine guests with the hexameric aggregate of 1b was explored, and it appears that under the conditions used in the present study these guests interact with the external faces of the hexameric aggregate of 1b.