含有二甲基乙烯的环金属 ((II) 复合物:可通过金属协调和合理的连接体设计调节的光色学
Jacky Chi-Hung Chan1, Wai Han Lam, Hok-Lai Wong
1Institute of Molecular Functional Materials, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China.
Journal of the American Chemical Society
|July 26, 2011
概括
新的 ((II) 复合物含有光色滴乙烯联体,在暴露于光线时呈现可逆色变化. 它们的特性可通过连接体设计和辅助连接体调节,为先进的光响应材料提供了潜在的潜力.
科学领域:
- 有机金属化学 有机金属化学
- 材料科学 材料科学 材料科学
- 摄影化学的使用.
背景情况:
- 循环金属 ((II) 复合物因其独特的光物理性质而受到研究.
- 在光照照射时经历可逆变色的光色材料具有显著的兴趣.
- 狄氏乙烯 (DTE) 单位以其高效的光色表现而闻名.
研究的目的:
- 合成和描述一系列新型的循环金属 ((II) 复合物,这些复合物包含光色滴乙烯联体.
- 研究这些新型复合物的电化学,光物理和光色特性.
- 探索连接体结构和辅助连接体对观察到的属性的影响.
主要方法:
- 合成循环合金 (II) 复合物与不同的CN和OO联体.
- 用于结构确定的X射线晶体学.
- 电化学分析 (循环电压测量) 用于研究氧化还原特性和LUMO水平.
- 光物理测量 (吸收,排放) 来评估光化学.
- 在光刺激和热漂白动力学下进行光色行为研究.
- 密度函数理论 (DFT) 计算用于理论见解.
主要成果:
- 成功合成和表征新的 (II) 复合物[Pt (C) (N) (O) (O) ] .
- 电化学研究表明,最低的未占用分子轨道 (LUMO) 对辅助OO配体敏感.
- 复合体表现出可逆光色,在光激发时显著的颜色变化.
- 光色行为受化环上的替代物,C() N配体的π-结合和辅助配体的影响.
- 确定了代表性复合物的热循环逆转的热漂白动力学和激活屏障.
- DFT计算为观察到的属性提供了洞察力.
结论:
- 新的循环金属 ((II) 复合物表现出可调节的光色行为.
- 连接体设计,包括DTE单元和辅助连接体,在控制光反应性质方面发挥着至关重要的作用.
- 这些发现有助于开发基于复合物的先进光色材料.
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