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. 2019 Jul 3;9(7):974. doi: 10.3390/nano9070974

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(a) Schematic illustration of the synthetic procedure for AF@MOF-801 and the size-selective sensing mechanism toward targe analyte of ClO⁻. (b) The luminescence responses of free AF for various analytes. (c) The luminescence responses of AF@MOF-801 for various analytes. (d) The confocal laser scanning microscopy images of SMMC-7721 cells incubated with AF@MOF-801 and with various concentrations of ClO⁻. Reproduced with permission from [119]. Copyright the Royal Society of Chemistry, 2019.