双环--甲:可扩展的合成,多样化的功能化,高效的聚合,以及其聚合物的容易机械激活
Jinghui Yang1, Maggie Horst1, Sabrina H Werby1
1Department of Chemistry, Stanford University, Stanford, California 94305, United States.
Journal of the American Chemical Society
|August 14, 2020
概括
研究人员开发出新的聚合物, 这些新型机械体具有可调节的特性,可以通过简单的机械动作来激活.
科学领域:
- 聚合物化学
- 材料科学
- 有机化学
背景情况:
- 在外部刺激下开发可调节性质的聚合物是一个关键的研究领域.
- 在机械应力下经历显著性质变化的机械极受欢迎.
研究的目的:
- 合成和描述一个新的阶梯类型机械单体,双环[2.2.0]hex-5-ene-peri-naphthalene (BCH-Naph).
- 通过环开放转化聚合 (ROMP) 探索BCH-Naph单体的聚合及其随后的机械激活到结合聚合物.
主要方法:
- 合成多克BCH-NAPH单体.
- 用各种替代剂对BCH-NAPH单体进行功能化.
- 环开转化聚合 (ROMP) 用于产生超高分子量聚乙烯 (BCH-NAPH).
- 机械激活 (超声波,研磨,) 聚乙烯.
主要成果:
- BCH-Naph单体通过ROMP有效聚合,产生具有受控分子量和低分散性的聚合物.
- 可以机械激活合成的多乙-纳,转化为结合聚合物.
- 机械激活导致可观察到的吸收和光特性变化.
- 可以通过功能化BCH-NAPH单体来调整光电子和物理性能.
结论:
- 多BCH-NAPH) 是一种具有可调节性质的多机械体系统.
- 合成可扩展性,功能多样性,高效的聚合和易于机械激活使该系统对进一步研究具有吸引力.
- 这些聚合物提供了在溶液和固态中探索多方面的机械反应的潜力.
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