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The successful construction of uniform ultramicropores via polymerizing ionic monomers into IUPs enables the fully exploitation of the selective anionic sites. Notably, the aperture size and surface chemistry of IUPs can be finely tuned by adjusting the branched structure of ionic monomers, which play critical roles in excluding CH<jats:sub>4<\/jats:sub> and N<jats:sub>2<\/jats:sub>, as well as reducing the coadsorption of CO<jats:sub>2<\/jats:sub>. The swelling property of IUPs with adsorption of SO<jats:sub>2<\/jats:sub> contributed to the high SO<jats:sub>2<\/jats:sub> uptake capacity and high separation selectivity. Systematic investigations including static gas adsorption, dynamic breakthrough experiments, stability tests and modeling studies confirmed the efficient performance of IUPs for trace SO<jats:sub>2<\/jats:sub> capture.<\/jats:p>","DOI":"10.1002\/anie.202013448","type":"journal-article","created":{"date-parts":[[2020,12,31]],"date-time":"2020-12-31T11:46:00Z","timestamp":1609415160000},"page":"6986-6991","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":89,"title":["Tailoring the Pore Size and Chemistry of Ionic Ultramicroporous Polymers for Trace Sulfur Dioxide Capture with High Capacity and Selectivity"],"prefix":"10.1002","volume":"60","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8040-4686","authenticated-orcid":false,"given":"Xian","family":"Suo","sequence":"first","affiliation":[{"name":"Key Laboratory of Biomass Chemical Engineering of Ministry of Education Department of Chemical and Biological Engineering Zhejiang University  Hangzhou 310027 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ying","family":"Yu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Biomass Chemical Engineering of Ministry of Education Department of Chemical and Biological Engineering Zhejiang University  Hangzhou 310027 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Siheng","family":"Qian","sequence":"additional","affiliation":[{"name":"Key Laboratory of Biomass Chemical Engineering of Ministry of Education Department of Chemical and Biological Engineering Zhejiang University  Hangzhou 310027 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lin","family":"Zhou","sequence":"additional","affiliation":[{"name":"Key Laboratory of Biomass Chemical Engineering of Ministry of Education Department of Chemical and Biological Engineering Zhejiang University  Hangzhou 310027 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5600-8402","authenticated-orcid":false,"given":"Xili","family":"Cui","sequence":"additional","affiliation":[{"name":"Key Laboratory of Biomass Chemical Engineering of Ministry of Education Department of Chemical and Biological Engineering Zhejiang University  Hangzhou 310027 China"},{"name":"Hangzhou Global Scientific and Technological Innovation Center Zhejiang University  Hangzhou 311215 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7418-0046","authenticated-orcid":false,"given":"Huabin","family":"Xing","sequence":"additional","affiliation":[{"name":"Key Laboratory of Biomass Chemical Engineering of Ministry of Education Department of Chemical and Biological Engineering Zhejiang University  Hangzhou 310027 China"},{"name":"Hangzhou Global Scientific and Technological Innovation Center Zhejiang University  Hangzhou 311215 China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,2,24]]},"reference":[{"key":"e_1_2_2_1_1","unstructured":"\u00a0"},{"key":"e_1_2_2_2_2","doi-asserted-by":"publisher","DOI":"10.1088\/1748-9326\/8\/1\/014003"},{"key":"e_1_2_2_3_2","doi-asserted-by":"publisher","DOI":"10.5194\/acp-13-2635-2013"},{"key":"e_1_2_2_4_2","doi-asserted-by":"publisher","DOI":"10.3155\/1047-3289.59.8.972"},{"key":"e_1_2_2_5_2","unstructured":"W.H.O. 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