Void Engineering in Metal-Organic Frameworks via Synergistic Etching and Surface Functionalization

The rational design and engineering of metal–organic framework (MOF) crystals with hollow features has been used for various applications. Here, a top‐down strategy is established to construct hollow MOFs via synergistic etching and surface functionalization by using phenolic acid. The macrosized ca...

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Bibliographic Details
Published in:Advanced functional materials 2016-08, Vol.26 (32), p.5827-5834
Main Authors: Hu, Ming, Ju, Yi, Liang, Kang, Suma, Tomoya, Cui, Jiwei, Caruso, Frank
Format: Article
Language:English
Subjects:
Coating
Construction
Diffraction
Etching
Metal-organic frameworks
metal-phenolic networks
Phenolic acids
Strategy
surface functionalization
void engineering
Voids
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Summary:The rational design and engineering of metal–organic framework (MOF) crystals with hollow features has been used for various applications. Here, a top‐down strategy is established to construct hollow MOFs via synergistic etching and surface functionalization by using phenolic acid. The macrosized cavities are created inside various types of MOFs without destroying the parent crystalline framework, as evidenced by electron microscopy and X‐ray diffraction. The modified MOFs are simultaneously coated by metal–phenolic films. This coating endows the MOFs with the additional functionality of responding to near infrared irradiation to produce heat for potential photothermal therapy applications. A top‐down strategy to construct various hollow metal–organic frameworks (MOFs) is reported via synergistic etching and surface functionalization by using phenolic acid. Simultaneous surface modification not only allows precise etching inside the MOFs, but also results in a metal–phenolic coating on the MOFs. The metal–phenolic coating endows the MOFs with near infrared laser responsiveness.
ISSN:1616-301X
1616-3028
DOI:10.1002/adfm.201601193