一维协调聚合物的宏观螺旋组件:由溶剂同位素触发的螺旋反转
Jia-Ge Jia1,2, Chen-Chen Zhao3, Yi-Fan Wei1
1State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, P. R. China.
Journal of the American Chemical Society
|October 27, 2023
概括
这项研究表明使用溶剂来控制合协调聚合物 (CP) 的螺旋结构. 不同的溶剂诱导了各种形态,包括可调整的性超螺旋体,为性材料设计提供了新的可能性.
科学领域:
- 协调化学
- 材料科学
- 超分子化学
背景情况:
- 在人工系统中组装可控制的宏观螺旋是具有挑战性的.
- 状协调聚合物 (CP) 提供了创建复杂螺旋结构的潜力.
- 了解状自组件的形成机制对于设计至关重要.
研究的目的:
- 使用溶剂作为一种工具,以诱导和控制合聚合物中宏观螺旋体的形成.
- 研究溶剂成分对自组装CP的形态和螺旋感的影响.
- 探索这些状螺旋CP的潜力,
主要方法:
- 使用Ni/R-,S-BrpempH2系统合成奇拉协调聚合物.
- 系统地改变溶剂混合物 (水与乙二,甲醇,乙醇或异构体),以控制自组合.
- 使用显微镜和结构分析对产生的形态的描述.
- 理论计算以合理化观察到的螺旋结构.
- 吸附研究以评估合识别能力.
主要成果:
- 不同形态的溶剂依赖形成:扭曲的带,针状晶体,纳米纤维和超螺旋.
- 通过调整溶剂成分,成功诱导在性协调聚合物中的宏观螺旋.
- 通过使用不同的同位素 (NPA与IPA) 控制超螺旋的螺旋感 (左手或右手).
- 在合成的螺旋式CP中表现出奇拉识别行为.
结论:
- 溶剂是指导合聚合物自组装成宏观螺旋结构的有效工具.
- 通过选择溶剂,特别是使用异构体,可以精确控制自组装结构的螺旋感.
- 这种方法为开发具有可调的螺旋形态和潜在功能的新奇合材料提供了途径.
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