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Cover Feature: Counter Cation Dependent and Stimuli Responsive Supramolecular Polymers Constructed by Calix[4]pyrrole Based Host–Guest Interactions (Eur. J. Org. Chem. 4/2019)
Author(s) -
Yuvayapan Samet,
Aydogan Abdullah
Publication year - 2019
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.201900054
Subject(s) - supramolecular chemistry , chemistry , pyrrole , supramolecular polymers , polymer , calixarene , cover (algebra) , host–guest chemistry , polymer chemistry , stereochemistry , crystallography , molecule , organic chemistry , crystal structure , mechanical engineering , engineering
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.