用Cyanostar修饰的离子对对氧化染色体三角离子,以控制层级材料中的排放
Bo Qiao1, Brandon E Hirsch1, Semin Lee1
1Department of Chemistry, Indiana University , 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States.
Journal of the American Chemical Society
|April 25, 2017
概括
有色分子的层次组合控制了光学特性. 当离子对聚合时出现新的红移辐射,使新的光学材料设计成为可能.
科学领域:
- 材料科学
- 超分子化学
- 光学材料
背景情况:
- 用修改后的反离子对分子的层次组合可以调整材料的光学特性.
- 对于等级组织过程中光学性质的出现以及可用的阴离子盐的范围的理解有限.
研究的目的:
- 通过加入大型无机离子来扩大在等级组合中使用的离子盐的范围.
- 在溶液相组件中研究结构和排放特性的共同演变.
- 在不同组织层面阐明新兴光学属性的结构起源.
主要方法:
- 使用染色体三氧三角 (TOTA+) 阴离子和星 (CS) 宏循环来修改四甲酸 (BF4-) 反离子成2:1三明治复合物.
- 研究了固态结构,其中TOTA+离子与三明治复合体交替,导致红移光带.
- 使用特定的溶剂来控制和描述四个组织级别的组件 (1°至4°).
主要成果:
- 在固态状态下,TOTA+与CS修饰的BF4对离子的联合组装产生了交替堆和新的红移吸收和排放频段.
- 红移光学特征仅在TOTA+和三明治复合体之间形成的离子对被小聚合成更大的 (TOTA·[CS2BF4]) n组件时才被观察到.
- 由于多个TOTA+离子和星复合体之间的π接触,出现了新的电子状态.
结论:
- 这项研究表明,层次组织,特别是离子对的寡合化,对于基于TOTA+的材料的新光学性质的出现至关重要.
- 这些发现为通过简单的混合制备晶体和薄膜材料提供了一种简单的方法,为新的光学材料设计提供了一个平台.
- 将离子多样性扩展到受体修饰的大无机离子是开发先进光学材料的可行策略.
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