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嵌入在双晶中光分子转子的电化学切换
Yilei Wu, Marco Frasconi1, Wei-Guang Liu2
1Department of Chemical Sciences, University of Padova, Via Marzolo 1, Padova 35131, Italy.
Journal of the American Chemical Society
|May 30, 2020
概括
这项研究表明可切换的罗塔中的机械键如何控制光分子旋转器. 电化学交换改变了纳米限制,调节了在分子设备中的光.
科学领域:
- 超分子化学
- 材料科学
- 摄影化学
背景情况:
- 由于其复杂的结构, 机械互锁的分子具有独特的特性.
- 光分子旋转器是对本地环境的敏感探测器.
- 控制分子运动是开发先进功能材料的关键.
研究的目的:
- 研究如何在电化学可切换的双中纳米封闭影响二甲基 (BODIPY) 分子旋转器的光物理性质.
- 通过电化学控制分子构成和转子环境来证明光的调节.
- 探索这种系统对刺激反应材料的潜力.
主要方法:
- 合成具有BODIPY旋转器和四亚富 (TTF) 单元的双稳定 [2] 转.
- 电化学切换以改变TTF单元的氧化还原状态,并诱导轮的结构变化.
- 光谱分析 (光光谱) 用于测量旋转器行为和光强度的变化.
- 对激发状态属性的溶剂极性影响的研究.
主要成果:
- 将TTF单元电化学氧化为TTF2+使得环氧化 (CBPQT4+) 环移动,增加了旋转器旋转的能量屏障,并导致光增强了3.4倍.
- 在高溶剂极性下,光诱导的电子转移从BODIPY旋转器到CBPQT4+环导致光显著下降.
- 罗塔xane中的纳米封闭环境有效调节了BODIPY转子的物理化学特性.
结论:
- 双稳 [2] 中的机械键提供了一个控制分子旋转器动态和光的平台.
- 电化学刺激可以逆转分子系统的光输出.
- 这项研究提出了基于机械互锁的分子开发电光材料的可行策略,包括传感器和分子记忆.
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