Using a Multi‐Shelled Hollow Metal–Organic Framework as a Host to Switch the Guest‐to‐Host and Guest‐to‐Guest Interactions

A bio‐inspired design of using metal–organic framework (MOF) microcrystals with well‐defined multi‐shelled hollow structures was used as a matrix to host multiple guests including molecules and nanoparticles at separated locations to form a hierarchical material, mimicking biological structures. The...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2018-02, Vol.57 (8), p.2110-2114
Main Authors: Liu, Xiao‐Yuan, Zhang, Furui, Goh, Tian‐Wei, Li, Yang, Shao, Yu‐Cai, Luo, Lianshun, Huang, Wenyu, Long, Yi‐Tao, Chou, Lien‐Yang, Tsung, Chia‐Kuang
Format: Article
Language:English
Subjects:
Biological materials
Biomimetics
Construction materials
Coumarin
Energy transfer
fluorescence resonance energy transfer
Metal-organic frameworks
Metals
Microcrystals
Mimicry
multi-shelled hollow structures
Multifunctional materials
Nanoparticles
Palladium
Rhodamine 6G
Shells
Structural hierarchy
zeolitic imidazolate frameworks
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Summary:A bio‐inspired design of using metal–organic framework (MOF) microcrystals with well‐defined multi‐shelled hollow structures was used as a matrix to host multiple guests including molecules and nanoparticles at separated locations to form a hierarchical material, mimicking biological structures. The interactions such as energy transfer (ET) between different guests are regulated by precisely fixing them in the MOF shells or encapsulating them in the cavities between the MOF shells. The proof‐of‐concept design is demonstrated by hosting chromophore molecules including rhodamine 6G (R6G) and 7‐amino‐4‐(trifluoromethyl)coumarin (C‐151), as well as metal nanoparticles (Pd NPs) into the multi‐shelled hollow zeolitic imidazolate framework‐8 (ZIF‐8). We could selectively establish or diminish the guest‐to‐framework and guest‐to‐guest ET. This work provides a platform to construct complex multifunctional materials, especially those need precise separation control of multi‐components. The right home for ET: Metal–organic framework (MOF) microcrystals with a multi‐shelled hollow structure serve as an ideal matrix to precisely host multiple guest molecules (see picture; R6G and C‐151 dyes) and nanoparticles at separated locations. The energy transfer (ET) of guest‐to‐frame and guest‐to‐guest could be switched by controlling their locations.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201711600