Accessing pluripotent materials through tempering of dynamic covalent polymer networks

Accessing pluripotent materials through tempering of dynamic covalent polymer networks
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通过动态共价聚合物网络的回火获得多能材料

DOI:
10.1126/science.adi5009
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发表时间:
2024
期刊:
影响因子:
56.9
通讯作者:
Rowan, Stuart J.
Rowan, Stuart J.
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Boynton, Nicholas R.;Dennis, Joseph M.;Dolinski, Neil D.;Lindberg, Charlie A.;Kotula, Anthony P.;Grocke, Garrett L.;Vivod, Stephanie L.;Lenhart, Joseph L.;Patel, Shrayesh N.;Rowan, Stuart J.

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多能性被定义为一个不固定的发育潜能系统,通常与生物学和干细胞有关。受这一概念的启发,我们报告了合成聚合物,它们作为单一的“多能”原料,可以分化成一系列具有不同机械性能的材料,从硬而脆到软而可延伸。为了实现这一目标,我们利用了动态共价网络,其中包含不稳定的动态thia-Michael键,其键合程度可以通过回火进行热调节和保留,类似于冶金中使用的过程。此外,我们表明,这些材料的形状记忆行为可以通过回火来定制,并且这些材料可以被图案化以在空间上控制机械性能。
Pluripotency, which is defined as a system not fixed as to its developmental potentialities, is typically associated with biology and stem cells. Inspired by this concept, we report synthetic polymers that act as a single “pluripotent” feedstock and can be differentiated into a range of materials that exhibit different mechanical properties, from hard and brittle to soft and extensible. To achieve this, we have exploited dynamic covalent networks that contain labile, dynamic thia-Michael bonds, whose extent of bonding can be thermally modulated and retained through tempering, akin to the process used in metallurgy. In addition, we show that the shape memory behavior of these materials can be tailored through tempering and that these materials can be patterned to spatially control mechanical properties.
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影响因子: 5.5
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