AAB序列活基链共聚化自然存在的胺与马利米德:一个端到端序列调节的共聚物
Kotaro Satoh1, Masaru Matsuda, Kanji Nagai
1Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan.
Journal of the American Chemical Society
|July 1, 2010
概括
研究人员使用 (+) - d - 烯和马利米德实现了激进共聚合的序列控制. 这产生了具有高玻璃过渡温度和受控分子量的奇拉聚合物.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 有机合成 有机合成
背景情况:
- 与天然的大分子相比,在合成聚合物链中实现精确的序列控制仍然是一个重大挑战.
- 像蛋白质和DNA这样的天然聚合物表现出固有的序列调节,这种特征难以合成复制.
- 开发用于序列控制聚合物的合成方法对于先进的材料应用至关重要.
研究的目的:
- 报告一种用于定量和高度选择性的1:2序列调节激素共聚合的新方法.
- 合成具有高玻璃过渡温度的合性共聚物,使用天然存在的 (+) -d-烯和一个maleimide.
- 通过可逆添加-碎片化链转移 (RAFT) 聚合,实现端到端的序列调节共聚物和受控的分子量.
主要方法:
- 在醇溶剂中利用 (+) -d-烯 (L) 和一个maleimide (M) 的基态共聚化.
- 采用可逆添加碎片化链转移 (RAFT) 剂 (C-S) 来实现受控/活激素聚合.
- 用序列,性,热性质和分子量来描述由此产生的共聚合物.
主要成果:
- 在共聚合过程中实现了定量和高度选择性的1:2序列调节.
- 合成的性共聚合物由于刚性循环单体结构而表现出高的玻璃化过渡温度 (220-250°C).
- 生产的端到端顺序调节的共聚物[C-(M-M-L) ((n) -M-S]具有受控的分子量和排序的链末端.
结论:
- 通过使用特定的单体和RAFT剂,证明了在激进共聚合中顺序控制的成功策略.
- 合成的性共聚物具有理想的热性能和受控的架构.
- 这项工作推进了合成序列控制聚合物的领域,为新材料开辟了道路.
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