Pyrene‐cored covalent organic polymers by thiophene‐based isomers,their gas adsorption,and photophysical properties |
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| Authors: | Changfeng Li Peixian Li Linjiang Chen Michael E Briggs Ming Liu Kai Chen Xiaoxiao Shi Deman Han Shibin Ren |
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| Affiliation: | 1. School of Chemistry and materials Science, Shanxi Normal University, Lin Fen, China;2. School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou, China;3. Materials Innovation Factory and Department of Chemistry, University of Liverpool, Liverpool, UK |
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| Abstract: | Two new pyrene‐cored covalent organic polymers (COPs), CK‐COP‐1 and CK‐COP‐2 , were synthesized via the one‐step polymerization of two thiophene‐based isomers, 1,3,6,8‐tetra(thiophene‐2‐yl) pyrene ( L1 ) and 1,3,6,8‐tetra(thiophene‐3‐yl) pyrene ( L2 ). The resulting pyrene‐cored COPs exhibit rather different surface areas of 54 m2 g?1 and 615 m2g?1 for CK‐COP‐1 and CK‐COP‐2 , respectively. The CO2 uptake capacities of CK‐COP‐1 and CK‐COP‐2 also show different values of 2.85 and 9.73 wt % at 273 K, respectively. Furthermore, CK‐COP‐2 offers not only a larger CO2 adsorption capacity but also a better CO2/CH4 selectivity at 273 K compared with CK‐COP‐1 . CK‐COP‐1 and CK‐COP‐2 also exhibit considerable differences in their photophysical property. The different structure and properties of CK‐COPs could be attributed to the isomer effect of their corresponding thiophene‐based monomers. © 2017 Authors. Journal of Polymer Science Part A: Polymer Chemistry Published by Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017 , 55 , 2383–2389 |
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| Keywords: | covalent organic polymers (COPs) gas adsorption photophysical properties thiophene‐based isomers |
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