Squarephaneic Tetraanhydride: A Conjugated Square-Shaped Cyclophane for the Synthesis of Porous Organic Materials

Eder, Simon; Ding, Bowen; Thornton, Daisy B.; Sammut, Darlene; White, Andrew J. P.; Plasser, Felix; Stephens, Ifan E. L.; Heeney, Martin; Mezzavilla, Stefano; Glocklhofer, Florian

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

2022

A unique new member of the family of aromatic carboxylic anhydride building blocks—a conjugated square-shaped cyclophane with four anhydride groups—is presented. The building block can be obtained in a three-step synthesis and functionalised efficiently to give materials with highly interesting properties ranging from high degrees of porosity to excellent electrochemical properties, as shown by the conversion into imides and carboxylates.