Catalytically active metal organic framework based on a porphyrin modified by electron-withdrawing groups

<p>One metal-free porphyrin, modified by electron-withdrawing groups, was synthesized by introduction of two peripheral pyridyl substituents and two metal coordination polymers, {[Zn(C<sub>42</sub>H<sub>16</sub>F<sub>10</sub>N<sub>6</sub>)]·2C<sub>2</sub>H<sub>7</sub> N}<sub>n</sub> (<b>1</b>) and {[Co(C<sub>42</sub>H<sub>16</sub>F<sub>10</sub>N<sub>6</sub>)]·C<sub>2</sub>H<sub>7</sub> N}<sub>n</sub> (<b>2</b>), were synthesized solvothermally. In <b>1</b>, each porphyrin connected four other porphyrin molecules to construct a 2-D network through coordination bonds. Similarly, in <b>2</b> every Co(II) porphyrin coordinated with four adjacent molecules to form a 2-D framework. Thermogravimetric analyses indicate that both <b>1</b> and <b>2</b> show high-thermal stabilities. The fluorescence data of <b>1</b> and <b>2</b> show that <b>1</b> may be a candidate for potential inorganic–organic photoactive materials. Catalytic oxidation results show that <b>2</b> displays high activity with the only product acetophenone quantitatively in 81.4%, and after six cycles, the catalytic activity slightly decreases. These features of <b>2</b>, including the exceptional stability, and high catalytic activity, make it outstanding among MOFs reported in the literature.</p>