Porous polymer networks cross-linked by novel copper Schiff base complex: From synthesis to catalytic activity

•A Copper Schiff base complex has been prepared.•X-ray diffraction and NMR spectroscopy of paramagnetic organometallic complex has been implied to characterize copper Schiff base complex.•Polyacetylene-type micro/mesoporous organometallic networks based on the copper Schiff base complex have been synthesized.•The oxidation catalytic activity of the prepared organometallic networks has been proved.