在聚乙烯 (?? 乙烯) 上进行宏分子螺旋性诱导,具有C2-对称的性[60]富勒烯-双添加物
Tatsuya Nishimura1, Kayo Tsuchiya, Sousuke Ohsawa
1Contribution from the Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan.
Journal of the American Chemical Society
|September 16, 2004
概括
基拉尔富勒伦双添加物被用来诱导聚合物中的螺旋性. 只有一个特定的双结构有效地促进了聚合物中单手螺旋形成,对分子几何学表现出敏感性.
科学领域:
- 超分子化学 超分子化学
- 聚合物科学 聚合物科学
- 有机化学 有机化学
背景情况:
- 基拉性大分子对于各种应用至关重要,包括基拉性识别和不对称催化.
- 富勒伦是创建新型超分子架构的多功能构建块.
- 控制聚合物形状对于定制材料特性至关重要.
研究的目的:
- 为了研究性C(60) -bisadducts作为宏分子螺旋性诱导剂的潜力.
- 在诱导聚合物螺旋性时,探索不同双体几何体的结构-活性关系.
- 为了检查阴离子富勒烯衍生物对溶液中阳离子聚乙烯的构造变化的影响.
主要方法:
- 使用手术HPLC合成N-methylfulleropyrrolidine bisadducts的合成和手术分辨率.
- 用于制备光学活性,阴离子C60) -bisadducts.
- 复合C(60) -双添加物与具有离子悬挂组 (聚-1) 的聚乙烯.
- 光谱分析,包括紫外线可见和圆形二元化 (CD),以监测聚合物构成.
主要成果:
- 三种合性N-甲基富勒洛皮罗利丁二酸盐被成功合成并分解成反体.
- 在与聚-1的复合后,只有跨-3双产物在紫外线可见区域诱导显著的诱导圆形二元化 (ICD).
- 跨-2和cis-3双体显示最小的CD诱导,表明有限的螺旋形形成.
- 观察到的螺旋性诱导高度依赖于C(60) -bisadducts的特定结构和几何.
结论:
- 基拉尔C(60) - 双添加物可以作为有效的宏分子螺旋性诱导剂,用于聚乙烯衍生物.
- 螺旋性感应的效率对充电的立体化学和空间排列在富勒烯双中敏感.
- 这项研究强调了定制的富勒衍生物在控制聚合物二次结构方面的潜力.
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