一个分子Ce2@I(h) -C80开关 - - 在光诱导的电荷转移反应活性中,前所未有的氧化途径
Dirk M Guldi1, Lai Feng, Shankara Gayathri Radhakrishnan
1Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany. guldi@chemie.uni-erlangen.de
Journal of the American Chemical Society
|June 12, 2010
概括
这项研究引入了一个新的Ce(2)@I(h) -C(80) -ZnP分子. 它的电荷转移行为取决于溶剂的极性,在非极性溶剂中显示减少转移,在极性溶剂中显示氧化转移.
科学领域:
- 超分子化学 超分子化学
- 材料科学 材料科学 材料科学
- 摄影化学的使用.
背景情况:
- 对先进材料来说,开发新的电子捐赠者-接受器结合体至关重要.
- 了解复杂分子系统中的电荷转移机制是设计功能性材料的关键.
研究的目的:
- 为了合成和表征一种新的Ce(2)@I(h) -C(80) -ZnP电子捐赠者-受体结合体.
- 系统地研究这种合物在不同溶剂极性中的电荷转移化学.
主要方法:
- 合成了Ce(2)@I(h) -C(80) -ZnP的结合物.
- 谱学和电化学分析用于研究电荷转移过程.
- 计算建模以了解电子合和溶剂效应.
主要成果:
- 这种Ce(2)@I(h) -C(80) -ZnP结合体表现出溶剂依赖的电荷转移.
- 减少电荷转移发生在非极性溶剂 (托卢/THF) 中.
- 氧化电荷转移在极性溶剂 (二/DMF) 中占主导地位,由溶剂稳定驱动.
结论:
- 在所有溶剂中,[Ce(2) ](6+) 集群减少是外热的.
- [Ce(2) ](6+) 集群与ZnP之间的电子合是弱的.
- 电荷转移路径是由溶剂极性和电子矩阵元素调节的.
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