Luminescence quenching in epitaxially grown PCN-224 type metal-organic frameworks

06 June 2022, Version 2
This content is a preprint and has not undergone peer review at the time of posting.


Core-shell and multivariant metal-organic frameworks (MOFs) of the PCN-224 type were prepared using metal-free and metalated porphyrin building blocks. Probing these MOFs with luminescence quenching upon exposure to oxygen reveals efficient gas transport and oxygen quenching in the core of the MOF. Undesirable energy transfer results in diminished contribution of the phosphorescence component in all mixed MOFs except for the physical mixture of individual crystals used as a reference.


metal-organic framework
optical oxygen sensor

Supplementary materials

Supporting Information
Experimental details and syntheses, optical micrographs and particle size distribution, UV-Vis spectra from digestion experiments and Stern-Volmer plots


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