Targeted control over the porosities and functionalities of conjugated microporous polycarbazole networks for CO2-selective capture and H2 storage. Issue 46 (15th November 2017)

• Record Type: Journal Article
• Authors: Liao, Yaozu; Cheng, Zhonghua; Trunk, Matthias; Thomas, Arne
• Is Part Of: Polymer chemistry. Volume 8:Issue 46(2017)
• Page Start: 7240
• Page End: 7247
• Publication Date: 2017-11-15
• Subjects: Polymers -- Periodicals; Macromolecules -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1039/c7py01439b
• Languages: English
• ISSNs: 1759-9954

Abstract

Abstract : Target controllable conjugated microporous polycarbazole networks with pyridine-, bipyridine-, and cyano-functionalized networks exhibit a large surface area and tunable gas uptake. Abstract : We report a conjugated microporous polycarbazole network and its pyridine-, bipyridine-, and cyano-functionalized networks exhibiting large surface area (1126 m 2 g −1 ), isosteric heat of CO2 adsorption (∼32 kJ mol −1 ), and CO2 -uptake capacity (14 wt% at 1 bar and 273 K). IAST calculations using single-component-isotherms reveal that the functionalized polycarbazole networks have a very high CO2 selectivity over N2 (164) under ambient conditions. These porous networks also possess moderate H2 storage capacity (1.35 wt% at 1 bar and 77 K) and high isosteric heat of H2 adsorption (10.3 kJ mol −1 ). Our finding provides a new targeted route to control the porosities and functionalities of microporous polymers for efficient gas uptake.