Effects of 2,5-furanylene sulfides in polymer main chains on polymer physical properties
Effects of 2,5-furanylene sulfides in polymer main chains on polymer physical properties
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聚合物主链中2,5-呋喃硫醚对聚合物物理性能的影响
DOI：
10.1038/s41428-018-0140-9
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发表时间：
2019
期刊：
影响因子：
2.8
通讯作者：
Yasuhito Koyama
中科院分区：
文献类型：
--
作者：
Abu Bin Ihsan;Yasuhiro Tawara;Shinya Goto;Hirokazu Kobayashi;Kiyotaka Nakajima;Atsushi Fukuoka;Yasuhito Koyama
我们开发了以不同间隔基为重复单元的含2，5-呋喃硫化物的聚合物，并评价了聚合物中呋喃硫化物单元之间的相互作用。2，5-二氯呋喃衍生物与二硫代硫酸盐在200 °C反应，通过亲核芳香取代反应促进缩聚反应，得到相应的呋喃硫化物聚合物。拉伸测量和光谱分析表明，基于硫键引起的偶极矩增强，呋喃基硫化物部分形成了非常稳定的π-π堆积结构。当该聚合物在重复的呋喃基硫化物单元之间具有长间隔时，该聚合物表现为化学稳定的网络聚合物，该网络聚合物由π-π堆积结构作为交联单元组成。
We developed 2,5-furanylene sulfide-containing polymers bearing different spacers as repeating units and evaluated the interactions between the furanylene sulfide units in the polymers. The treatment of 2,5-dichlorofuran derivatives with dithiolates at 200 °C promotes polycondensation via nucleophilic aromatic substitution to give the corresponding furanylene sulfide-containing polymers. Tensile measurements and spectral analyses demonstrate that the furanylene sulfide moieties form remarkably stableπ–πstacking structures based on the enhanced dipole moment induced by sulfur linkages. When the polymer has a long spacer between repeating furanylene sulfide units, the polymer behaves as a chemically stable network polymer comprised ofπ–πstacking structures as cross-linking units.