{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1873961342989350656.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1007/s13233-022-0004-1"}}],"dc:title":[{"@value":"Controlled Cationic Polymerization of Sulfide-Containing Vinyl Ethers"}],"description":[{"notation":[{"@value":"The living cationic polymerizations of sulfide-containing vinyl ethers, namely, alkyl-sulfide-containing 2-(ethylthio)ethyl vinyl ether (ESEVE) and arylsulfide-containing 2-(phenylthio)ethyl and 2-[4-(methylthio)phenoxy]ethyl vinyl ethers (PSEVE and MSPEVE, respectively), were examined using HCl/ZnCl2, 1-(isobutoxy)ethyl acetate (IBEA)/Et1.5AlCl1.5, and IBEA /Et1.5AlCl1.5/SnCl4 as initiators. The polymerization of ESEVE terminated at a 35% monomer conversion, and a high-molecular-weight polymer was not obtained; instead, the nucleophilicity of the sulfur moiety in ESEVE led to cyclization, forming five-membered ring sulfonium species. In contrast, the side reactions were suppressed when PSEVE was used, which has a less-nucleophilic sulfur moiety on its benzene ring, and polymerization proceeded to an 88% conversion, affording a high-molecular-weight polymer with a narrow molecular weight distribution (Mw = 12,500, Mw/Mn = 1.18). Furthermore, cyclic sulfonium was not produced during the polymerization of MSPEVE, in which the sulfur atom was farther from the generated carbocation; the polymerization proceeded quantitatively producing a high-molecular-weight polymer with a narrow molecular weight distribution, despite the short lifetime of the growing species. In particular, a high-molecular-weight polymer with the narrowest distribution (Mw = 13,500, Mw/Mn = 1.08) was obtained when SnCl4 was used as the Lewis acid."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1893961342989350658","@type":"Researcher","foaf:name":[{"@value":"Miki Murata"}]},{"@id":"https://cir.nii.ac.jp/crid/1893961342989350657","@type":"Researcher","foaf:name":[{"@value":"Takeshi Namikoshi"}]},{"@id":"https://cir.nii.ac.jp/crid/1893961342989350528","@type":"Researcher","foaf:name":[{"@value":"Yuhei Watanabe"}]},{"@id":"https://cir.nii.ac.jp/crid/1893961342989350656","@type":"Researcher","foaf:name":[{"@value":"Shinji Watanabe"}]},{"@id":"https://cir.nii.ac.jp/crid/1893961342989350660","@type":"Researcher","foaf:name":[{"@value":"Kazuma Ishikawa"}]},{"@id":"https://cir.nii.ac.jp/crid/1893961342989350659","@type":"Researcher","foaf:name":[{"@value":"Ayaka Kaneda"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"15985032"},{"@type":"EISSN","@value":"20927673"}],"prism:publicationName":[{"@value":"Macromolecular Research"}],"dc:publisher":[{"@value":"Springer Science and Business Media LLC"}],"prism:publicationDate":"2021-11-16","prism:volume":"30","prism:startingPage":"16","prism:endingPage":"25"},"dataSourceIdentifier":[{"@type":"OPENAIRE","@value":"doi_dedup___::0e548850d0ed566b3490ab856434112f"}]}