articleAngewandte Chemie International EditionNov 29, 2023Closed access

Turning on Singlet Oxygen Generation by Outer‐Sphere Microenvironment Modulation in Porphyrinic Covalent Organic Frameworks for Photocatalytic Oxidation

University of Science and Technology of China · Hefei National Center for Physical Sciences at Nanoscale

PubMed
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Abstract

Abstract Singlet oxygen ( 1 O 2 ) is ubiquitously involved in various photocatalytic oxidation reactions; however, efficient and selective production of 1 O 2 is still challenging. Herein, we reported the synthesis of nickel porphyrin‐based covalent organic frameworks (COFs) incorporating functional groups with different electron‐donating/‐withdrawing features on their pore walls. These functional groups established a dedicated outer‐sphere microenvironment surrounding the Ni catalytic center that tunes the activity of the COFs for 1 O 2 ‐mediated thioether oxidation. With the increase of the electron‐donating ability of functional groups, the modulated outer‐sphere microenvironment turns on the catalytic…

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