title: Anion exchange: a novel way of preparing hierarchical porous structure in poly(ionic liquid)s.
abstract: Hierarchical porous poly(ionic liquid)s (PILs) with high specific surface area were firstly synthesized via anion exchange. The exchange of bulky salicylate and its dimers/clusters in PILs by other smaller anions increased the specific surface area and fabricated a hierarchical porous structure. The high specific surface area and hierarchical porous structure prompted a high degree of exposure of the active sites and made the heterogeneous PIL catalysts contact with substrates sufficiently, enhancing their catalytic activity.
authors.affiliation: Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, Shanghai 200062, China. ghgao@chem.ecnu.edu.cn.
authors.forename: Li
authors.initials: L
authors.lastname: Qin
authors.affiliation: Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, Shanghai 200062, China. ghgao@chem.ecnu.edu.cn.
authors.forename: Binshen
authors.initials: B
authors.lastname: Wang
authors.affiliation: Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, Shanghai 200062, China. ghgao@chem.ecnu.edu.cn.
authors.forename: Yongya
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, Shanghai 200062, China. ghgao@chem.ecnu.edu.cn.
authors.forename: Li
authors.initials: L
authors.lastname: Chen
authors.affiliation: Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, Shanghai 200062, China. ghgao@chem.ecnu.edu.cn.
authors.forename: Guohua
authors.identifier: http://orcid.org/0000-0003-4016-394X
authors.initials: G
authors.lastname: Gao