Amphiphilic Covalent Organic Framework Nanoparticles for Pickering Emulsion Catalysis with Size Selectivity

• DOI: 10.1002/ange.202314650
• Publication Date: 2024-02-01T03:19:15Z
• Authors: Houbing Zou; Qibiao Li; Rongyan Zhang; Zeshan Xiong; Binghua Li; Junhao Wang; Runwei Wang; Qianrong Fang; Hengquan Yang
• Keywords: Pickering emulsion

Abstract Exploiting advanced amphiphilic solid catalysts is crucial to the development of Pickering emulsion catalysis. Herein, covalent organic framework (COF) nanoparticles constructed with highly hydrophobic monomers as linkers were found show superior amphiphilicity and they then developed a new class emulsifiers for Employing COFs emulsifiers, emulsions controllable type droplet sizes obtained. COF materials have also been demonstrated serve porous surface coatings replace traditional modifications stabilizing emulsions. After implanting Pd into COFs, obtained catalyst displayed 3.9 times higher catalytic efficiency than in biphasic oxidation reaction alcohols. Such an enhanced activity was resulted from high area regular structure COFs. More importantly, because their tunable pore diameters, catalysis remarkable size selectivity achieved. This work first example that applied catalysis, providing platform exploring frontiers