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Light responsive metal-organic frameworks as controllable CO-releasing cell culture substrates.

ABSTRACT: A new carbon monoxide (CO)-releasing material has been developed by embedding a manganese carbonyl complex, MnBr(bpydc)(CO)₃ (bpydc = 5,5'-dicarboxylate-2,2'-bipyridine) into a highly robust Zr(iv)-based metal-organic framework (MOF). Efficient and controllable CO-release was achieved under exposure to low intensity visible light. Size-controllable nanocrystals of the photoactive MOF were obtained and their CO-releasing properties were correlated with their crystal sizes. The photoactive crystals were processed into cellular substrates with a biocompatible polymer matrix, and the light-induced delivery of CO and its subsequent cellular uptake were monitored using a fluorescent CO-probe. The results discussed here demonstrate a new opportunity to use MOFs as macromolecular scaffolds towards CO-releasing materials and the advantage of MOFs for high CO payloads, which is essential in future therapeutic applications.

SUBMITTER: Diring S

PROVIDER: S-EPMC5364997 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Photo-controllable heterostructured crystals of metal-organic frameworks <i>via</i> reversible photocycloaddition.

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