全面的苏苏基-米亚乌拉催化剂-转移聚合,用于精密合成强的供体/受体结合聚合物及其序列工程
Jaeho Lee1, Hwangseok Kim1, Hyunwoo Park1
1Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea.
Journal of the American Chemical Society
|July 15, 2021
概括
这项研究引入了苏苏基-米亚拉催化剂转移聚合 (SCTP) 用于合成各种聚合物,包括富电子和缺电子的单体. 这种新方法可以控制聚合物和具有可调节电子特性的块共聚合物的合成.
科学领域:
- 聚合物化学
- 有机合成
- 材料科学
背景情况:
- 催化剂转移聚合提供了生命特征,但受到狭窄的单体范围的限制.
- 开发多功能聚合技术对于先进的聚合物材料至关重要.
研究的目的:
- 开发一种具有广泛单体范围的高效的苏苏基-米亚拉催化剂转移聚合物 (SCTP).
- 从富电子和缺乏电子的单体中实现多种聚合物和块共聚物的受控合成.
- 为了证明由此产生的共聚物的电子性质的可调性.
主要方法:
- 酸盐单体的合理设计和使用商业可用的Buchwald RuPhos和SPhos Pd G3预催化剂.
- 优化对3,4-二氧化 (ProDOT),三 (BTz) 和素 (QX) 等单体的聚合.
- 使用1H NMR和MALDI-TOF光谱来确定链增长机制和聚合物结构的特征.
主要成果:
- 实现了各种 (异质) 的受控聚合,分散度窄 (Đ < 1.29) 和产量高 (> 85%).
- 证明了供体-接受体单体的统计共聚化,调整HOMO和带隙能量.
- 通过顺序添加和一次性方法成功合成了明确的供体-接受体和接受体-接受体块共聚物.
结论:
- SCTP为合成广泛的聚合物和复杂结构提供了一种多功能和高效的方法.
- 开发的方法可以精确控制分子重量,分散性和电子性质.
- 这种进步为创建各种应用的功能聚合物开辟了新的途径.
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