A Soluble Porous Organic Polymer for Highly Efficient Organic-Aqueous Biphasic Catalysis and Convenient Reuse of Catalysts
作者：Hao-Xi Fu, Zhi-Hao Zhang, Wenhao Fan, Shuifeng Wang, Yan Liu and Mu-Hua Huang
关键字：Functional Materials, POPs, organic/water two phase catalysis, reduction of p-nitrophenol
论文来源：期刊
发表时间：2019年
Functional porous organic polymers (POPs) such as PIM-1 with good solubility have been used for the homogenization of heterogeneous catalysts very recently, in addition to the traditional gas/liquid adsorption and separation. As emerging functional POPs, Azo-POPs have been studied broadly, although they are usually insoluble. This paper reports a novel soluble Azo-POP (named Azo-POP-7) with a fluorene-derived b-hydroxy-azobenzene subunit in the polymer main chain for the first time via a facile azo-coupling polymerization of contorted monomers. The resultant polymers exhibited a Brunauer–Emmett–Teller (BET) specific surface area of 364 m2 g1 and good solubility in most organic solvents. Moreover, the soluble catalyst Pd@Azo-POP-7 showed the highest efficiency (kapp ? 4.95 102 s1) for the organic-aqueous biphasic reduction reaction of 4-nitrophenol with good recyclability (12 cycles). This work introduces a novel strategy for designing novel functional POPs for organic/aqueous biphasic catalysis.