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J Am Chem Soc. 2018 Nov 14;140(45):15507-15515. doi: 10.1021/jacs.8b10122. Epub 2018 Nov 2.

Paving Metal-Organic Frameworks with Upconversion Nanoparticles via Self-Assembly.

Author information

1
Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , P.R. China.
2
Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM) , Nanjing University of Posts & Telecommunications , 9 Wenyuan Road , Nanjing 210023 , P.R. China.
3
Shaanxi Institute of Flexible Electronics , Northwestern Polytechnical University , Xi'an , 710072 , China.

Abstract

The combination of metal-organic frameworks (MOFs) and luminescent nanomaterials with upconversion characteristics could enable the development of new nanomaterials and applications in information security, optical sensing, and theranostics. However, currently available methods are not ideally suitable for fabricating composites of MOF and upconversion nanomaterial, and incorporating upconversion nanomaterials with MOFs in a controllable manner remains challenging. Here, we demonstrate an in situ self-assembly route to the nanocomposites in which MOFs are homogeneously paved with upconversion nanoparticles. Without additional assistance, this strategy, mainly driven by electrostatic interactions, can be used to incorporate different upconversion nanoparticles with diverse MOFs. The as-synthesized composites can be further used to construct composites with unique structures, such as MOF@upconversion nanoparticles@MOF sandwiched nanocomposites, and would be useful for applications including luminescence-monitored drug delivery, anticounterfeiting, and photodynamic therapy. These findings should shed light on new avenues for fabricating multifunctional composites of MOF and upconversion nanomaterials for varied applications.

PMID:
30350963
DOI:
10.1021/jacs.8b10122

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