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Abstract

The present disclosure relates to the field of porous material synthesis, and particularly to a method for preparing porous aromatic framework membranes based on an inorganic salt template method. It aims at the problem of difficulty of preparation of porous aromatic framework membranes in large scale and large size. It uses alkynyl-containing building units and bromine-containing building units as raw materials and obtains continuous, dense, defect-free porous aromatic framework membranes through Sonogashira-Hagihara coupling polymerization. It specifically successfully prepares porous aromatic framework nanosheets on an inorganic salt substrate, and then produces a centimeter-scale large size continuous porous aromatic framework membrane through self-assembly. The method has mild conditions, a simple preparation process, and it is easy to operate. The prepared membranes have high yield and large area, and meet the requirements of actual industrial production.

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First Claim