Open AccessPyrene‐cored covalent organic polymers by thiophene‐based isomers, their gas adsorption, and photophysical properties
Author(s) -
Li Changfeng,
Li Peixian,
Chen Linjiang,
Briggs Michael E.,
Liu Ming,
Chen Kai,
Shi Xiaoxiao,
Han Deman,
Ren Shibin
Publication year - 2017
Publication title -
journal of polymer science part a: polymer chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.768
H-Index - 152
eISSN - 1099-0518
pISSN - 0887-624X
DOI - 10.1002/pola.28627
Subject(s) - thiophene , pyrene , chemistry , monomer , polymer , polymerization , selectivity , polymer chemistry , adsorption , covalent bond , organic chemistry , catalysis
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 ( L 1 ) and 1,3,6,8‐tetra(thiophene‐3‐yl) pyrene ( L 2 ). The resulting pyrene‐cored COPs exhibit rather different surface areas of 54 m 2 g −1 and 615 m 2 g −1 for CK‐COP‐1 and CK‐COP‐2 , respectively. The CO 2 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 CO 2 adsorption capacity but also a better CO 2 /CH 4 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