了解双基复合体中的一个或两个阶段的价值体转换的起源
Gemma K Gransbury1, Brooke N Livesay2, Jett T Janetzki1
1School of Chemistry, University of Melbourne, Parkville, VIC 3010, Australia.
Journal of the American Chemical Society
|May 16, 2020
概括
这项研究探讨了复合物的价值联 (VT),证明了对先进材料潜在使用的电子转移的控制. 观察到不同的电子结构和VT行为,为下一代VT综合体铺平了道路.
科学领域:
- 协调化学
- 材料科学
- 超分子化学
背景情况:
- 价值联体 (VT) 是氧化还原活性联体和金属之间可逆的分子内电子转移.
- 双核复合物与二氧化) 桥梁提供可调节的两步VT路径:
- 这些复合物在分子设备和材料中的应用中比旋转交叉复合物具有优势.
研究的目的:
- 用螺旋或四螺旋桥接合成和表征新型双核复合物.
- 调查连接体设计和辅助连接体对价值复合体行为的影响.
- 阐明控制VT转换的热力学参数和电子通信.
主要方法:
- 四个双核复合物的合成,其中包括spiroH4或Br4桥接和Mentpa辅助.
- 使用结构,磁性和光谱技术进行表征.
- 密度函数理论 (DFT) 计算和电化学研究,包括混合价值{ZnII-cat-SQ-ZnII}模拟.
主要成果:
- 观察到多样化的静脉动脉行为,包括一阶段的部分静脉动脉,两阶段的静脉动脉,不完整的静脉动脉和温度不变状态.
- 使用电化学,DFT和ZnII模拟器进行一阶段和两阶段VT的阐明热力学参数.
- 基于连接体和氧化还原电位匹配的电子通信的合理化静脉电路过渡概况.
结论:
- 这项研究为先进的两步VT综合体制定了明确的设计策略.
- 结合具有微弱分子内合的混合价值II类和II-III类二氧化) 连接物是关键.
- 这项研究为具有定制电子特性的下一代视觉技术材料铺平了道路.
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