线性-状双块共聚合物的自组装:从纳米纤维到聚合物聚合物
Jesús del Barrio1, Luis Oriol, Carlos Sánchez
1Departamento de Química Orgánica y Química Física, Facultad de Ciencias-Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain.
Journal of the American Chemical Society
|March 3, 2010
概括
新的两性线性状块共聚物自组装成各种纳米结构,包括纳米纤维,板状,管状和聚合体. 这些光响应聚合物表现出基于共聚合物组成和生成的可调整形态.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 两类块共聚物 (BCs) 对于自组装成各种纳米结构至关重要.
- 线性-树突BC为控制聚合提供了独特的架构.
- 含有亚博的聚合物由于其光响应性特性而引起人们的兴趣.
研究的目的:
- 为了合成和描述新的两性线性-状块共聚物 (PEGm-AZOn).
- 研究这些BCs在水溶液中的自我组装行为和形态.
- 探索由此产生的纳米结构的潜在应用,特别是它们的光响应性.
主要方法:
- 聚乙烯甘醇-阿佐二树突块共聚物质 (PEGm-AZOn) 的合成.
- 通过在二氧化中溶解BC并添加水来制备聚合物聚合物.
- 使用传输电子显微镜 (TEM),冷电子显微镜 (cryo-TEM) 和原子力显微镜 (AFM) 的形态特征.
主要成果:
- 各种聚合物的形成:纳米纤维,板状,管状和聚合物体.
- 观察到世代依赖的聚合行为,与特定的形态学有关于水友性/疏水性比率.
- 证明了光敏反应行为,紫外线照明导致聚合体体中的膜纹.
结论:
- 两性线性-性块共聚物为创建可调节的纳米结构提供了一个多功能平台.
- 观察到的形态学,包括纳米纤维,菌体和聚合体,可以通过共聚合物设计来控制.
- 这些聚合物体的光响应性为光触发应用开辟了道路.
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