Pyrene-Cored Covalent Organic Polymers by Thiophene-Based Isomers, Their Gas Adsorption, and Photophysical Properties



Li, Changfeng, Li, Peixian, Chen, Linjiang, Briggs, Michael E ORCID: 0000-0003-1474-1267, Liu, Ming ORCID: 0000-0003-0008-1480, Chen, Kai, Shi, Xiaoxiao, Han, Deman and Ren, Shibin
(2017) Pyrene-Cored Covalent Organic Polymers by Thiophene-Based Isomers, Their Gas Adsorption, and Photophysical Properties. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 55 (14). pp. 2383-2389.

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Abstract

Two new pyrene-cored covalent organic polymers (COPs), <b>CK-COP-1</b> and <b>CK-COP-2</b>, were synthesized via the one-step polymerization of two thiophene-based isomers, 1,3,6,8-tetra(thiophene-2-yl) pyrene (<b>L<sub>1</sub></b> ) and 1,3,6,8-tetra(thiophene-3-yl) pyrene (<b>L<sub>2</sub></b> ). The resulting pyrene-cored COPs exhibit rather different surface areas of 54 m<sup>2</sup> g<sup>-1</sup> and 615 m<sup>2</sup>g<sup>-1</sup> for <b>CK-COP-1</b> and <b>CK-COP-2</b>, respectively. The CO<sub>2</sub> uptake capacities of <b>CK-COP-1</b> and <b>CK-COP-2</b> also show different values of 2.85 and 9.73 wt % at 273 K, respectively. Furthermore, <b>CK-COP-2</b> offers not only a larger CO<sub>2</sub> adsorption capacity but also a better CO<sub>2</sub>/CH<sub>4</sub> selectivity at 273 K compared with <b>CK-COP-1</b>. <b>CK-COP-1</b> and <b>CK-COP-2</b> also exhibit considerable differences in their photophysical property. The different structure and properties of <b>CK-COPs</b> 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. <b>2017</b>, <i>55</i>, 2383-2389.

Item Type: Article
Uncontrolled Keywords: covalent organic polymers (COPs), gas adsorption, photophysical properties, thiophene-based isomers
Depositing User: Symplectic Admin
Date Deposited: 15 Dec 2017 16:46
Last Modified: 19 Jan 2023 06:48
DOI: 10.1002/pola.28627
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3014268