Hypercrosslinked porous polymer nanosheets: 2D RAFT agent directed emulsion polymerization for multifunctional applicationsElectronic supplementary information (ESI) available. See DOI: 10.1039/c5py01194a

• Main Authors: Zhao, Wuxue, Hou, Zongsheng, Yao, Zhaoquan, Zhuang, Xiaodong, Zhang, Fan, Feng, Xinliang
• Format: Article
• Language: English
• ISSN: 1759-9954; 1759-9962
• DOI: 10.1039/c5py01194a

Two-dimensional hyper-cross-linked microporous polymers (2D HCPs) have been readily synthesized by emulsion polymerization using trithiocarbonate functionalized graphene oxide as a 2D reversible addition-fragmentation chain transfer (RAFT) agent. After a gel-type and permanently porous poly(vinylbenzyl chloride- co -divinylbenzene) precursor resin was grafted to the graphene surface, an FeCl 3 -promoted Friedel-Crafts reaction was carried out for benzyl chloride groups to construct a porous structure confined within 2D nanosheets. The resulting HCPs exhibited superhydrophobic behavior, and had a predominance of micropores with a specific surface area of up to 1224 m 2 g −1 . Moreover, they showed improved thermal stability in comparison with unadorned HCPs obtained without using the graphene template. Their H 2 and CO 2 capacities at 77 and 273 K reached 1.27 and 9.74 wt%, respectively, at a relative pressure of 0.99. In addition, the as-synthesized 2D HCPs were used as carbon precursors to generate 2D porous carbons with a high specific surface area (871 m 2 g −1 ) and high-performance electrochemical energy storage (144 F g −1 at 0.5 A g −1 ). 2D hyper-cross-linked microporous polymers (2D HCPs) were synthesized by emulsion polymerization using trithiocarbonate functionalized graphene oxide as 2D macromolecular CTA.