响应性液晶聚合物网络的机械性质的化学触发变化
Albert Velasco Abadia1, Katie M Herbert1, Valentina M Matavulj2
1Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80309, United States.
Journal of the American Chemical Society
|September 30, 2021
概括
研究人员将酶整合到液晶聚合物网络中, 这种方法可以使用生物化学触发器精确控制LCN的机械性能和形状变化.
科学领域:
- 材料科学
- 聚合物化学
- 生物化学
背景情况:
- 液晶聚合物网络 (LCN) 是可编程的,对刺激有反应的材料,能够改变形状.
- 目前的LCN通常依赖于物理刺激,限制其反应的特异性.
- 整合生化触发剂为增强LCN功能提供了一条新途径.
研究的目的:
- 通过固定酶,为LCNs的刺激反应引入化学特异性.
- 证明用尿酶作为LCN中的分子触发剂来调节机械性质.
- 探索核友化学在设计先进的LCN中的潜力.
主要方法:
- 酶固定:使用酸化学方法将尿素与LCN薄膜结合.
- 活性和分布确认:测试和对焦光成像验证了尿素酶活性和均分布.
- 刺激引起的反应:尿素添加触发了氨基生成,导致胺的形成和结合.
主要成果:
- 固定性尿酶保持活性,并分布在整个LCN膜中.
- 由于键的形成,尿素添加导致模数增加了4倍.
- 通过控制结,可以调整机械性能和玻璃过渡温度.
结论:
- 生物化学机制,特别是酶集成,在LCN中具有显著的分子触发器潜力.
- 核友化学可以有效地用于调节LCN的机械性质.
- 这项工作为开发复杂,化学反应敏捷的LCN材料铺平了道路.
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