Modular domain structure: A biomimetic strategy for advanced polymeric materials
Modular domain structure: A biomimetic strategy for advanced polymeric materials
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DOI：
10.1021/ja039127p
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发表时间：
2004-02-25
影响因子：
15
通讯作者：
Nguyen, M
中科院分区：
文献类型：
--
作者：
Guan, ZB;Roland, JT;Nguyen, M
在高分子科学中，一个长期存在的挑战是设计出一种能将诸如拉伸强度、断裂韧性和弹性等所需的机械性能结合在一种结构中的聚合物。本文报道了一种新型仿生模块化聚合物设计来应对这一挑战。遵循自然界所使用的分子机制，通过使用精确且牢固的氢键单元构建了包含多个环的模块化聚合物。单分子力 - 拉伸实验揭示了在链被拉伸时环依次展开的情况。单分子性能和整体性能之间的良好相关性成功地证明了我们利用模块化结构域来实现先进聚合物性能的仿生概念。
A long lasting challenge in polymer science is to design polymers that combine desired mechanical properties such as tensile strength, fracture toughness, and elasticity into one structure. A novel biomimetic modular polymer design is reported here to address this challenge. Following the molecular mechanism used in nature, modular polymers containing multiple loops were constructed by using precise and strong hydrogen bonding units. Single-molecule force-extension experiments revealed the sequential unfolding of loops as a chain is stretched. The excellent correlation between the single-molecule and the bulk properties successfully demonstrates our biomimetic concept of using modular domain structure to achieve advanced polymer properties.