Polyfunctional Conjugated Microporous Polymers for Applications in Direct C-H Arylation of Unactivated Arenes and Aqueous Adsorption of Aromatic Amines |
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Authors: | LUO Kexin SU Qing JU Pengyao LI Xiaodong LIU Ziqian SUN Xiaoman LI Guanghua WU Qiaolin |
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Affiliation: | 1. College of Chemistry, Jilin University, Changchun 130012, P. R. China;2. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, P. R. China |
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Abstract: | Salen-porphyrin-based conjugated microporous polymers(CMPs) have been demonstrated to be an attractive material platform for predesigned structures and promising applications. Herein, a new salen-porphyrin-based conjugated microporous polymer(SP-CMP-L) was solvothermally prepared by porphyrin-forming condensation reaction of pyrrole and salen-dialdehyde derivative. The SP-CMP-L was characterized by spectroscopy technologies, and also exhibited excellent thermal and chemical stability. The porosity of SP-CMP-L was examined by N2 adsorption/desorption isotherms. The BET specific surface area of the CMP material was calculated to be 290.4 m2/g with the pore volume of 0.19 cm3/g. The microstructure property of the resulting material was further evaculated by scanning electron microscopy(SEM) and transmission electron microscopy(TEM). The SP-CMP-L with salen and porphyrin multidentate coordination sites was proposed to serve as an initiator to promote the cross-coupling between aryl halides with unactivated arenes under base-mediated conditions. The transition-metal-free catalytic protocol provided high catalytic activity for direct C-H arylation reaction of unactivated arenes, and thus offered a convenient and efficient alternative for the construction biaryl scaffolds. In addition, the salen-porphyrin-based CMP material possessed remarkable adsorption capability for the removal of organic amines from water. |
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Keywords: | Conjugated microporous polymer C-H arylation Aqueous adsorption |
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