An Aggregation-Induced Emission-Active Macrocycle: Illusory Topology of the Penrose Stairs.

Abstract

The facile synthesis of a tetraphenylethene-based macrocycle having aggregation-induced emission characteristics and that expresses illusory topology of the Penrose stairs is presented. As a result of the twisted chirality (P or M) of the tetraphenylethene unit and the axial chirality of the macrocyclic linkage (R or S), the macrocycle exhibits two absolute configurations whose interconversion is energetically favorable as revealed by theoretical calculations.