Construction of [2]rotaxane-based supramolecular polymers driven by wheel-stopper π⋯π interactions†
Abstract
A new strategy for supramolecular polymerization is designed and presented, which is based on the wheel-stopper charge-transfer (CT) interactions of [2]rotaxanes containing π-electron-rich pillar[5]arene wheels and electron-deficient pyromellitic diimide (PDI) stoppers.