A Corrole-Based Covalent Organic Framework Featuring Desymmetrized Topology

Angew Chem Int Ed Engl. 2020 Mar 9;59(11):4354-4359. doi: 10.1002/anie.201915569. Epub 2020 Feb 3.

Abstract

Herein, for the first time, we present the successful synthesis of a novel two-dimensional corrole-based covalent organic framework (COF) by reacting the unusual approximately T-shaped 5,10,15-tris(p-aminophenyl)corrole H3 TPAPC with terephthalaldehyde, which adopts desymmetrized hcb topology and consists of a staggered AB stacking structure with elliptical pores. The resultant corrole-based COF, TPAPC-COF, exhibits high crystallinity and excellent chemical stability. The combination of extended π-conjugated backbone and interlayer noncovalent π-π interactions endows TPAPC-COF with excellent absorption capability in the entire visible-light and even near-infrared regions. Moreover, this work suggests the promise of TPAPC-COF as a new class of photoactive material for efficient singlet-oxygen generation with potential photodynamic therapy application as demonstrated by in vitro anticancer studies.

Keywords: corrole; covalent organic framework; desymmetrized topology; singlet oxygen.

Publication types

  • Research Support, Non-U.S. Gov't