Construction of Multiform Hollow‐Structured Covalent Organic Frameworks via a Facile and Universal Strategy for Enhanced Sonodynamic Cancer Therapy. (24th March 2023)

• Record Type: Journal Article
• Authors: Liu, Sainan; Dou, Kunkun; Liu, Bin; Pang, Maolin; Ma, Ping'an; Lin, Jun
• Is Part Of: Angewandte Chemie. Volume 135:Number 18(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2023-03-24
• Subjects: Covalent Organic Frameworks -- Imine Oxidation -- Nanocarriers -- Solvent Evaporation -- Sonodynamic Therapy; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.202301831
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: The special structural morphology of hollow covalent organic frameworks (HCOFs) has an important influence on their applications. However, the rapid and precise control of morphology for HCOFs still remains largely challenging. Herein, we present a facile and universal two‐step strategy based on solvent evaporation and oxidation of imine bond for the controllable synthesis of HCOFs. The strategy enables to prepare HCOFs in a greatly shortened reaction time and seven kinds of HCOFs are fabricated by the oxidation of imine bond via hydroxyl radicals (⋅OH) generated from Fenton reaction. Importantly, a fascinating library of HCOFs with diverse nanostructures, including bowl‐like, yolk‐shell, capsule‐like and flower‐like morphologies, has been ingeniously constructed. Owing to the large cavities, the obtained HCOFs are ideal candidates for drug delivery, which are employed to load five small molecule drugs, achieving the enhanced sonodynamic cancer therapy in vivo. Abstract : A facile and universal two‐step strategy based on solvent evaporation and oxidation of imine bond was proposed for the fast synthesis of hollow covalent organic frameworks (HCOFs), achieving the construction of a HCOFs library with diverse nanostructures. The synthesized HCOFs with abundant cavities are ideal nanocarriers for high‐efficiency drug loading, thus enhancing the sonodynamic cancer therapy.