Fluorine-phenanthroimidazole Porous Organic Polymer: Efficient Microwave Synthesis and Photocatalytic Activity

摘要： A porous polymer containing a fluorophenylphenanthroimidazole core was easily prepared via one-pot Suzuki-Miyaura cross coupling reactions under microwave heating. These new metal-free polymers have demonstrated heterogeneous photocatalytic activity toward aza-Henry reaction with reasonable recyclability. Their preparation require a minimal workup to build porous networks with control over the apparent surface area and pore volume from suitable molecular building blocks containing the 2-(1H-phenanthro[9,10-d]imidazol-2-yl)-3,5-difluorophenol (PhIm-2F), as rigid and multitopic node which afforded a conjugated porous polymer (CPP-PhIm-2F). A series of fluorinated ligands have shown their capability to preparation of soluble and supported cationic Ru(bpy)2(F-phenanthroimidazole)-complexes by reaction with Ru(bpy)2Cl2 and demonstrated a beneficial effect of two fluorine atom on the photocatalytic effect.