向一个充电的Homo[2]catenane使用Diazaperopyrenium同性恋识别
Xirui Gong, Jiawang Zhou, Karel J Hartlieb
1Department of Chemistry, Faculty of Science , King Abdulaziz University , Jeddah 22254 , Saudi Arabia.
Journal of the American Chemical Society
|May 4, 2018
概括
一个新的八年级机械互锁分子,基于diazaperopyrenium (DAPP) 的homo[2]catenane (DAPPHC8+) 被合成. 这种坚固的结构使得电子转移速度更快, 产生暂时的电荷分离状态.
科学领域:
- 超分子化学
- 材料科学
- 摄影化学
背景情况:
- 机械互锁分子 (MIM) 具有独特的结构和功能特性.
- 控制MIM中的电荷转移对于开发先进材料至关重要.
- 对于其电子和光物理特征进行了探索.
研究的目的:
- 合成和表征一种基于DAPP的新型八年级同类[2]catenane (DAPPHC8+).
- 研究同型相互作用在DAPPHC8+形成中的作用.
- 研究DAPPHC8+系统中的光诱导能量和电子转移过程.
主要方法:
- 在环境条件下合成八年级同类[2]catenane (DAPPHC).
- 使用X射线结晶学阐明分子间相互作用的固态结构分析.
- 在溶液中进行光物理研究 (UV-Vis吸收,辐射光谱,短暂吸收).
主要成果:
- 通过平衡 π-π 堆叠和库伦比克排斥,成功合成了 DAPPHC8+以30%的产量.
- 固态结构揭示了DAPP2+和ExBIPY2+单位之间的特定方向和距离,这对同类相互作用至关重要.
- 在330nm的光辐射诱导同时能量和电子转移,形成一个短暂的电荷分离状态,其动力比前体旋更快 (DAPPBox4+).
结论:
- 同性互动是DAPPHC homo[2]catenane的自我组装和稳定性的关键.
- DAPPHC8+的刚性和坚固的架构促进了高效的光诱导电子转移.
- 这项研究表明了基于DAPP的MIM在需要控制电荷分离和转移的应用中的潜力.
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