Metal-free activation of molecular oxygen by covalent triazine frameworks for selective aerobic oxidation.

ABSTRACT: Oxygen activation is a critical step in ubiquitous heterogeneous oxidative processes, most prominently in catalysis, electrolysis, and pharmaceutical applications. We present here our findings on metal-free O2 activation on covalent triazine frameworks (CTFs) as an important class of N-rich materials. The O2 activation process was studied for the formation of aldehydes, ketones and imines. A detailed mechanistic study of O2 activation and the role of nitrogen heteroatoms were comprehensively investigated. The electron paramagnetic resonance (EPR) and control experiments provide strong evidence for the reaction mechanism proving the applicability of the CTFs to activate oxygen into superoxide species. This report highlights the importance of a self-templating procedure to introduce N functi

SUBMITTER: Abednatanzi S 

PROVIDER: S-EPMC7124959 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature