Surface‐Specific Functionalization of Nanoscale Metal–Organic Frameworks. (23rd October 2015)

• Record Type: Journal Article
• Authors: Wang, Shunzhi; Morris, William; Liu, Yangyang; McGuirk, C. Michael; Zhou, Yu; Hupp, Joseph T.; Farha, Omar K.; Mirkin, Chad A.
• Is Part Of: Angewandte Chemie. Volume 127:Number 49(2015)
• Page Start: 14951
• Page End: 14955
• Publication Date: 2015-10-23
• Subjects: Metall‐organische Gerüste -- Oberflächenfunktionalisierung -- Phosphatlipide -- Postsynthetische Modifikation -- Zirconium‐Oxo‐Cluster; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201506888
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: A method for modifying the external surfaces of a series of nanoscale metal–organic frameworks (MOFs) with 1, 2‐dioleoyl‐ sn ‐glycero‐3‐phosphate (DOPA) is presented. A series of zirconium‐based nanoMOFs of the same topology (UiO‐66, UiO‐67, and BUT‐30) were synthesized, isolated as aggregates, and then conjugated with DOPA to create stably dispersed colloids. BET surface area analysis revealed that these structures maintain their porosity after surface functionalization, providing evidence that DOPA functionalization only occurs on the external surface. Additionally, dye‐labeled ligand loading studies revealed that the density of DOPA on the surface of the nanoscale MOF correlates to the density of metal nodes on the surface of each MOF. Importantly, the surface modification strategy described will allow for the general and divergent synthesis and study of a wide variety of nanoscale MOFs as stable colloidal materials. Abstract : Zr‐basierte MOF‐Nanopartikel, die mit 1, 2‐Dioleoyl‐ sn ‐glycero‐3‐phosphat (DOPA) oberflächenmodifiziert wurden, zeigen drastisch veränderte Kolloideigenschaften. Die Oberfläche von NanoMOFs lässt sich demnach durch Koordination an zugängliche Metallzentren nach der Synthese modifizieren, während die Kristallinität und Porosität erhalten bleiben.