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Cargo delivery on demand from photodegradable MOF nano-cages

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Abstract

We report the photo-induced degradation of and cargo release from a nanoscale metal–organic framework (nMOF) incorporating photo-isomerizable 4,4′-azobenzenedicarboxylate (AZB) linkers. The structure matches a UiO-type framework where 12 4,4′-azobenzenedicarboxylate moieties are connected to a Zr6O4(OH)4 cluster, referred to as UiO-AZB. Due to the incorporation of photo-isomerizable struts, the degradation of UiO-AZB is accelerated by irradiation with white light (1.3 ± 0.1% h−1 under dark conditions vs. 8.4 ± 0.4% h−1 when irradiated). Additionally, we show slow release of Nile Red (NR) which is triggered by irradiation (0.04 ± 0.01% h−1 under dark conditions vs. 0.36 ± 0.02% h−1 when irradiated).

Graphical abstract: Cargo delivery on demand from photodegradable MOF nano-cages

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Publication details

The article was received on 19 Dec 2016, accepted on 01 Feb 2017, published on 01 Feb 2017 and first published online on 01 Feb 2017


Article type: Paper
DOI: 10.1039/C6DT04787D
Citation: Dalton Trans., 2017, Advance Article
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    Cargo delivery on demand from photodegradable MOF nano-cages

    C. C. Epley, K. L. Roth, S. Lin, S. R. Ahrenholtz, T. Z. Grove and A. J. Morris, Dalton Trans., 2017, Advance Article , DOI: 10.1039/C6DT04787D

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