作为机械活性凝中的可逆肌肉类驱动剂的双晶[c2]链罗塔克桑
Antoine Goujon1, Thomas Lang1, Giacomo Mariani2
1SAMS Research Group, Institut Charles Sadron, University of Strasbourg, CNRS , 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France.
Journal of the American Chemical Society
|October 13, 2017
概括
研究人员在聚合物科学中开发了pH敏感的分子机器. 这些聚合物凝会显著收缩和膨胀,显示出活性物质的同步分子作用.
科学领域:
- 聚合物科学
- 材料科学
- 纳米技术
背景情况:
- 分子机器在活跃设备中提供了纳米到宏观运动传输的潜力.
- 有效的系统需要探索热力学和拓学方面的有用工作生产.
研究的目的:
- 描述pH敏感的双相稳定[c2]百合链罗塔克桑的分支聚合.
- 根据机械键行为,研究由此产生的聚合物凝的宏观作用.
主要方法:
- 用铜 (I) 催化Huisgen 1,3-双极循环添加 (点击化学) 进行聚合.
- 使用高分辨率魔方旋转质子核磁共振 (HR-MAS 1H NMR) 和中子散射实验来描述化学凝.
主要成果:
- 通过对pH敏感的双相稳定[c2]链罗塔克桑成功合成了交联聚合物凝.
- 化学凝在pH变化 (质子化状态) 的反应中显示出显著的体积变化 (约50%).
结论:
- 凝中的宏观体积变化是由分子水平上的机械键的同步执行驱动的.
- 这项工作有助于通过分子机器的控制运动开发活性材料和设备.
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