Aromatic-rich hydrocarbon porous networks through alkyne metathesis

作者：Yang, Haishen; Zhu, Youlong; Du, Ya; Tan, Dazhi; Jin, Yinghua; Zhang, Wei^*

来源：Materials Chemistry Frontiers, 2017, 1(7): 1369-1372.

DOI：10.1039/c6qm00359a

• COVALENT ORGANIC FRAMEWORKS
• HIGH-SURFACE-AREA
• POLY(ARYLENEETHYNYLENE) NETWORKS
• CATALYSTS
• MOLYBDENUM
• POLYMERS
• POLYMERIZATION
• MACROCYCLES
• ARYLENE
• DESIGN

Purely hydrocarbon-based porous polymers have generally been prepared through various irreversible transition metal-catalyzed cross-coupling reactions forming C-C bonds. Herein, we report an alternative synthetic approach, namely reversible alkyne metathesis, for the preparation of ethynylene-linked porous polymers. Planar and tetrahedral-shaped monomers were explored to construct poly(aryleneethynylene) (PAE) networks. We systematically varied the size of the monomers and studied the structure-property relationships. The resulting polymers exhibit high Brunauer-Emmett-Teller (BET) surface areas in the range of 736 m(2) g(-1) to 2294 m(2) g(-1). The advantages of such aromatic-rich PAE networks are their lightweight, high thermal/chemical stabilities, and superior hydrophobicity, which are beneficial for their application in adsorption/separation of toxic organic pollutants from water. We found that PAEs can adsorb a significant amount of common aromatic solvents, e.g. up to 723 wt% of nitrobenzene. Our study thus demonstrates an encouraging novel approach to prepare purely hydrocarbon-based porous materials.

• 出版日期2017-7-1
• 单位上海电力大学