PolyMOF Nanoparticles: Dual Roles of a Multivalent polyMOF Ligand in Size Control and Surface Functionalization. Issue 46 (30th September 2019)

• Record Type: Journal Article
• Authors: Gu, Yuwei; Huang, Mingjun; Zhang, Wenxu; Pearson, Matthew A.; Johnson, Jeremiah A.
• Is Part Of: Angewandte Chemie international edition. Volume 58:Issue 46(2019)
• Page Start: 16676
• Page End: 16681
• Publication Date: 2019-09-30
• Subjects: coordination modulation -- metal–organic frameworks -- multivalent effect -- nanoparticles -- PEGylation; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201910542
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: Metal–organic framework nanoparticles (MOF NPs) have emerged as an important class of materials that display significantly enhanced performance in many applications compared to bulk MOF materials; their synthesis, however, commonly involves a tedious sequence that controls particle size and surface properties in separate steps. Now, a simple strategy to access functional MOF NPs in one pot is reported that uses a polyMOF ligand possessing a polymer block for surface functionalization and a coordination block with tunable multivalency for size control. This strategy produces uniform polyMOF‐5 NPs with sizes down to 20 nm, displaying exceptional structural and colloidal stability upon exposure to ambient conditions. A detailed time‐dependent study revealed that the polyMOF NPs were formed following an aggregation‐confined crystallization mechanism. Generality was demonstrated through the synthesis of well‐defined polyUiO‐66 NPs. Abstract : A simple strategy was developed to access functional MOF NPs in one pot, using a multivalent polyMOF ligand that possesses a polymer block for surface functionalization and a coordination block with tunable multivalency for size control. Uniform polyMOF‐5 NPs and polyUiO‐66 NPs with sizes down to 20 nm were produced, displaying exceptional structural and colloidal stability upon exposure to ambient conditions for up to 7 months.