序列控制的多聚氨酸刷的pH响应
Xin Yuan1, Harold W Hatch2, Jacinta C Conrad1
1Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX 77204, USA. jcconrad@uh.edu.
Soft matter
|May 31, 2023
概括
序列控制的聚烯酸刷 (PAB) 呈现出独特的pH反应. 单体序列,而不是移植密度,决定了PAB的行为,使可调节的刺激响应表面成为可能.
科学领域:
- 聚合物科学 聚合物科学
- 表面化学 表面化学
- 材料科学 材料科学 材料科学
背景情况:
- 多电解质刷 (PEBs) 呈现出明确的pH反应.
- 在溶液中的多氨基酸 (PA) 显示了依赖序列的行为.
- 响应刺激的材料对于先进的应用至关重要.
研究的目的:
- 调查顺序控制的多粉质刷 (PAB) 的pH反应.
- 将PAB行为与传统的PEB进行比较.
- 确定单体序列和接种密度对PAB特性的影响.
主要方法:
- PABs的分子模拟.
- 对电离状态,高度,侧面结构和链形状的分析.
- 不同的pH值,移植密度和单体序列.
主要成果:
- 与PEB相比,PAB显示质量上不同的pH响应.
- 接种密度对PAB属性有适度的影响.
- 单体序列强烈影响pH响应,较大的块大小增加了响应范围,这是由于链内部的吸引力和背折叠.
结论:
- 单体序列是调整PAB pH响应的关键因素.
- 序列控制的PAB提供了一种创建可调节的刺激响应表面的方法.
- 这些发现与基于溶液的多类植物的行为一致.
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