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通过补充协调及其自组装纳米结构,轻松构建金属超分子聚3-乙烯) 块-聚乙烯氧化物

Yun-Jui He¹, Tsung-Han Tu¹, Ming-Kun Su¹

¹Department of Chemistry, National Taiwan University , Taipei 10617, Taiwan.

Journal of the American Chemical Society

|March 1, 2017

概括

研究人员开发了一种自选方法,使用专门的配体和离子来创建复杂的分子结构. 这种技术可以精确控制先进的聚合物材料中的纳米结构形成.

科学领域:

超分子化学
聚合物科学
材料科学

背景情况:

在协调化学中形成金属复合物的特皮里丁配体至关重要.
块共聚物的自组是创建具有可调节性质的纳米结构的关键.
控制异构复合物的形成具有挑战性,但提供了独特的功能.

研究的目的:

开发一种高度自我选择的方法,以形成异构双 () 复合物.
使用这些复合物来轻松制造金属超分子聚3-基基聚乙烯氧化物 (P3HT-b-PEO) 二聚合物.
研究这些新型块共聚物的自我组装行为和纳米结构形成.

主要方法:

两个预先设计的2,2':6',2" - - 基联体与一个Zn(II) 离子的互补协调.
使用互补配体对合成P3HT-b-PEO双块共聚物.
使用原子力显微镜 (AFM) 和传输电子显微镜 (TEM) 的形态特征.
使用EDTA和双功能的Zn (II) -皮覆盖PEO解离和恢复超分子组件.

主要成果:

在环境条件下通过自我选择的过程形成异质双胺复合物.
成功构建金属超分子P3HT-b-PEO二块共聚物.
通过调整块比,证明控制自组装成核心外纳米结构 (球体,纤维).
聚合物聚合物的可逆解离和再分散通过有针对性的化学处理.

结论:

互补的金属-连接物协调策略提供了一个有效的途径,使异构复合物.
这种方法允许精确地从棒-线圈块共聚物中设计纳米结构.
超分子组件的可逆性为材料形态提供了动态控制.

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