Synthesis and properties of partially fluorinated amorphous ring containing polymers: Poly[bis(2,2-difluorovinyl)formal], poly[bis(2,2-difluorovinyl)difluoroformal], and poly[bis(1-deuterio-2,2-difluorovinyl)difluoroformal]

Yu Yang, František Mikeš, Yasuhiro Koike, Yoshiyuki Okamoto

研究成果: Article査読

8 被引用数 (Scopus)

抄録

Three novel partially fluorinated monomers, bis(2,2-difluorovinyl)formal (I), bis(2,2-difluorovinyl)difluoroformal (II), and bis(1-deuterio-2,2-difluorovinyl)difluoroformal (III), were prepared. These monomers were polymerized in bulk via free radical mechanism. Monomer I produced a cross-linked polymer, but monomers II and III yielded amorphous polymers (II-P and III-P) having five- and six-membered rings along the backbone. Polymers II-P and III-P were soluble not only in fluorinated solvents but also in nonfluorinated solvents such as THF, 1, 4-dioxane, DMF, and DMSO. They have good thermal stability (onset of decomposition >400°C), high glass transition temperatures (105°C), and low dielectric constant (1.98-1.82 at frequency ranging from 0.1 to 3 × 10 6 Hz). Furthermore, these polymers are completely amorphous and possess outstanding optical clarity extending from visible to near-IR regions. The refractive indices of both polymers were measured at various wavelengths to evaluate material dispersion. The material dispersions of II-P and III-P were similar and had low values, which are comparable to perfluorinated polymers and much lower than perdeuterioPMMA. The unique optical properties of these polymers make them attractive for use as optical materials.

本文言語English
ページ(範囲)7918-7923
ページ数6
ジャーナルMacromolecules
37
21
DOI
出版ステータスPublished - 2004 10月 19

ASJC Scopus subject areas

  • 有機化学
  • ポリマーおよびプラスチック
  • 無機化学
  • 材料化学

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「Synthesis and properties of partially fluorinated amorphous ring containing polymers: Poly[bis(2,2-difluorovinyl)formal], poly[bis(2,2-difluorovinyl)difluoroformal], and poly[bis(1-deuterio-2,2-difluorovinyl)difluoroformal]」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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