Abstract
The Cover Feature shows the counter cation dependent and pH-responsive supramolecular polymers based on the host–guest recognition motif of a well-known macrocycle calix[4]pyrrole and its tethered carboxylate unit. Unlike its congener tetrabutylammonium cation, when cetyltrimethylammonium (CTA) was used as the counter cation, they were found to be a direct part of supramolecular polymer via cation-π interactions between cone-shaped calix[4]pyrroles and CTA. This allowed supramolecular polymers to establish further hydrophobic interactions and to form gels at elevated concentrations. More information can be found in the Full Paper by A. Aydogan et al.
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