Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 24, Pages 20801-20805Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b05643
Keywords
metal-organic frameworks; dual-emissive carbon dots; Fe3O4 magnetic nanoparticles; HClO; ratiometric fluorescence
Funding
- Natural Science Foundation of Jiangsu Province [BK20171487, BK20171043]
- National Natural Science Foundation of China [21705080, 61775099]
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In this work, a new magnetic, ratiometric fluorescent nanoprobe has been designed and fabricated by encapsulating Fe3O4 magnetic nanoparticles (MNPs) and dual-emissive carbon dots into the cavities of metal-organic frameworks (MOFs). This one-pot method combined hybrid characteristics of MOFs with multiple properties of the encapsulated functional materials. The MOF-based nanoprobe possessed the advantages of MOFs (strong adsorption ability, accumulating the analytes), Fe3O4 MNPs (magnetic separation), and ratiometric sensors (eliminating the variabilities caused by the instability of the instruments and environment). The MOF-based nanoprobe was dispersible and stable in aqueous solution, and the nanoprobe was applied to HClO sensing. This work will provide a promising strategy for design and synthesis of novel MOF-based composite materials.
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