DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Suhyeon | ko |
dc.contributor.author | Jeong, Rokam | ko |
dc.contributor.author | Seo, Myungeun | ko |
dc.contributor.author | Lee, Hee-Seung | ko |
dc.date.accessioned | 2020-03-19T01:25:35Z | - |
dc.date.available | 2020-03-19T01:25:35Z | - |
dc.date.created | 2020-03-02 | - |
dc.date.created | 2020-03-02 | - |
dc.date.created | 2020-03-02 | - |
dc.date.issued | 2020-02 | - |
dc.identifier.citation | POLYMER, v.188 | - |
dc.identifier.issn | 0032-3861 | - |
dc.identifier.uri | http://hdl.handle.net/10203/272386 | - |
dc.description.abstract | Poly(biphenylene oxide)s (PBPOs) containing two pendent trifluoromethyl groups were synthesized from AB-type monomers, 4'-hydroxy-4-fluoro-3,5-bis(trifluoromethyl)biphenyl and its 3'-hydroxyl isomer. The displacement reaction of fluorine leaving group activated by the two trifluoromethyl groups at the ortho-positions produced high-molecular-weight polymers with M-n up to 101,000 g/mol, indicating the nucleophilic aromatic substitution reaction proceeded effectively. PBPOs withpara-, meta-, and mixed ether linkages were obtained and well characterized by FTIR and H-1/F-19 NMR spectroscopies. All PBPOs were amorphous and soluble in a wide range of organic solvents, and exhibited even more enhanced thermal stability than the previously reported two meta-trifluoromethyl substituted analogues. Increasing the para-linkage fraction in the polymer generally improved solubility and increased T-g in contrast to the meta-trifluommethyl case, where para-linked polymer was poorly soluble and semicrystalline. This suggests that the ortho-trifluommethyl substituents are more effective for the synthesis of para-linked PBPOs. They also showed low refractive indices and birefringence values. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCI LTD | - |
dc.title | Double-activated nucleophilic aromatic substitution polymerization by bis-ortho-trifluoromethyl groups to soluble para-poly(biphenylene oxide) | - |
dc.type | Article | - |
dc.identifier.wosid | 000513003200019 | - |
dc.identifier.scopusid | 2-s2.0-85077167819 | - |
dc.type.rims | ART | - |
dc.citation.volume | 188 | - |
dc.citation.publicationname | POLYMER | - |
dc.identifier.doi | 10.1016/j.polymer.2019.122124 | - |
dc.contributor.localauthor | Seo, Myungeun | - |
dc.contributor.localauthor | Lee, Hee-Seung | - |
dc.contributor.nonIdAuthor | Lee, Suhyeon | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | poly(arylene ether) | - |
dc.subject.keywordAuthor | poly(biphenylene oxide) | - |
dc.subject.keywordAuthor | Nucleophilic aromatic substitution reaction | - |
dc.subject.keywordPlus | HYPERBRANCHED POLY(ARYLENE ETHER)S | - |
dc.subject.keywordPlus | POLY(BIPHENYLENE OXIDE)S | - |
dc.subject.keywordPlus | POLY(PHENYLENE OXIDE)S | - |
dc.subject.keywordPlus | MONOMER | - |
dc.subject.keywordPlus | CHAIN | - |
dc.subject.keywordPlus | COPOLYMERS | - |
dc.subject.keywordPlus | SULFIDE)S | - |
dc.subject.keywordPlus | EXCHANGE | - |
dc.subject.keywordPlus | PHENYL | - |
dc.subject.keywordPlus | GROWTH | - |
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