Steric-factor-directed alternating supramolecular copolymer composed of hydrogen-bonded cyclohexanetricarboxamide units

摘要

Hydrogen-bonded supramolecular copolymers were easily prepared by mixing cyclohexanetricarboxamides with three (1) and six (2) alkylsilyl groups, and supramolecular fibers were fabricated. When the composition of 1 and 2 was at or close to equimolarity, the supramolecular copolymer chain was found to have an alternating sequence. This was attributed to the fact that the steric factor of the alkylsilyl side chains effectively controls the unit sequence of the supramolecular polymer chain. References: 36