复合物中具有双双滴乙烯-乙化的复合物中的氧化调节阶段性光色化
Bin Li1, Jin-Yun Wang, Hui-Min Wen
1State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.
Journal of the American Chemical Society
|September 4, 2012
概括
这项研究表明,在一个新的 (II) 复合体中,有控制的阶段性光色变化. 研究成功地实现了多个光色状态,克服了dithienylethene (DTE) 系统中的能量传输挑战.
科学领域:
- 材料科学 材料科学 材料科学
- 摄影化学的使用.
- 有机金属化学 有机金属化学
背景情况:
- 在具有多个光色单元的分子中实现受控的阶段性光色化是具有挑战性的.
- 环开放式和环闭式二甲基乙烯 (DTE) 部分之间的能量转移可以阻碍光循环.
- (II) 复合物为开发先进的光色材料提供了潜在的平台.
研究的目的:
- 准备和描述一种与两个相同的DTE-乙化物结合的新型 bis ((σ-乙化物) 结合的 ((II) 复合物.
- 调查复合体及其氧化形式的阶段性和双光色特性.
- 了解中心氧化状态对光色表现的影响.
主要方法:
- (II) 复合物 (2oo) 和其氧化形式 (2oo+) 的合成和特征.
- 谱分析 (NMR,UV-vs-NIR,IR) 用于监测光色相互转换.
- 电化学和计算研究以阐明电子特性和反应机制.
主要成果:
- 在2oo和2oo+中,逐步和双光色反应都成功实现了.
- 环闭吸收带2oo+显示了与2oo.com相比的蓝色移动.
- 在氧化物种 (2oo+/2co+) 中,由于反应部位的电子密度较低,光环化更为困难.
- 在双环封闭产品 (2cc/2cc+) 中,在封闭的DTE单元之间观察到显著的电子相互作用.
结论:
- 这项研究成功地在 (II) 复合体中证明了受控的阶段性和双色光色学.
- 中心的氧化状态显著影响光循环的效率.
- 这些发现为设计具有可调节性质的多响应光色系统提供了洞察力.
相关概念视频
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