Reductive Transformation of Imine Covalent Organic Frameworks into Emissive Polymers: Insights into Emission Quenching.

ABSTRACT: Although imine-linked covalent organic frameworks (COFs) are readily synthesized, their lack of intrinsic emission constrains their potential in optoelectronic applications. Moreover, the underlying mechanisms governing excited-state energy dissipation remain poorly understood. To overcome these limitations, we present a straightforward strategy to transform nonemissive, anthracene-based imine-COFs (im-COF) into highly emissive amine-based covalent organic polymers (am-COP) through NaBH₃CN/benzoic acid reduction, achieving solid-state emission quantum yields of up to 30%. To clarify the excited-state energy dissipation mechanisms in COFs and COPs, we synthesized molecular reference compounds featuring either imine or amine functionalities. Photophysical studies, su

SUBMITTER: Tyszka-Gumkowska A 

PROVIDER: S-EPMC12529896 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature