通过限制尺寸增长来控制超分子共聚物的形态特征,面积比和发射模式
Gourab Das1,2, Anjali Anand1,2, Balaraman Vedhanarayanan1
1Photosciences and Photonics Section, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, Kerala, 695019, India.
Chemistry (Weinheim an der Bergstrasse, Germany)
|July 27, 2023
概括
研究人员通过混合乙烯 (PE) 和Bodipy (BODIPY) 衍生物来控制功能pi系统的超分子聚合. 这种方法可以创建具有可调节的尺寸比率和光学特性的状聚合物.
科学领域:
- 超分子化学 超分子化学
- 材料科学是一种材料科学.
- 聚合物化学 聚合物化学
背景情况:
- 功能 π 系统的自发聚合会导致不受控制的链条长度和光学特性.
- 多种单体的超分子共聚化导致偏好的自我排序,阻碍了受控的组装.
- 捐赠者-受体相互作用对于克服超分子共聚化中的自我排序至关重要.
研究的目的:
- 通过共聚合控制乙烯 (PE) 和Bodipy (BODIPY) 衍生物的1D和2D聚合.
- 在超分子共聚合物中实现可调节的尺寸比和形态.
- 为了研究形态,面积比和排放特性之间的关系.
主要方法:
- 在不同比例的PE和BODIPY衍生物的共聚化.
- 使用扫描电子显微镜 (SEM),传输电子显微镜 (TEM) 和共聚焦激光扫描显微镜 (CLSM) 的形态特征.
- 时间解析的排放研究,以分析光学特性.
主要成果:
- 通过调整BODIPY-PE比率来控制状超分子结构的形成.
- 使用50%的BODIPY形成的长长的螺丝 (面积比为4-6),限制PE聚合.
- 使用75%的BODIPY形成的圆形子 (面积比1-2.5),完全抑制PE聚合.
- 观察到形态和视角比依赖的排放特征.
结论:
- 同聚合提供了一种方法来控制PE和BODIPY衍生物的高分子聚合.
- 可以合成可调节的螺旋形结构,可控制的尺寸比.
- 由此产生的超分子共聚物质的光学特性取决于它们的形态和面积比.
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