在弱环接近协调复合体中,对光色胺酸衍生物的电子和热稳定性进行调制
Jung Su Park1, Alejo M Lifschitz, Ryan M Young
1Department of Chemistry and International Institute for Nanotechnology, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208, United States.
Journal of the American Chemical Society
|November 6, 2013
概括
研究人员使用和复合体开发了新的光响应分子开关. 这些基于亚博的材料为光控制的应用提供了可调节的性能和增强的稳定性.
科学领域:
- 协调化学 协调化学
- 摄影化学的使用.
- 材料科学 材料科学 材料科学
背景情况:
- 弱链接近 (WLA) 系统提供可调节的光响应特性.
- 亚二衍生物是光响应材料中的关键成分.
- 血酸氨酸 (P,N) 连接体使动态协调成为可能.
研究的目的:
- 为了合成和研究d(8) 过渡金属 (Pt(II),Pd(II)) 复合物与P,N配体作为模型WLA光响应结构.
- 研究各种参数对这些复合物的光学和光化学性质的影响.
- 探索调整亚博衍生物的稳定性和光异构化行为的潜力.
主要方法:
- 合成Pt (II) 和Pd (II) 协调复合物与素功能化的氨基基联体.
- 使用光谱学进行光学和光化学性质的表征.
- 调查WLA参数,包括金属类型,协调模式,辅助配体,溶剂和 counterions.
- 单晶的X射线衍射分析.
主要成果:
- 综合体表现出可调节的光学和光化学特性,受WLA参数的影响.
- 亚博的电子状态之间的可逆切换由化物对照控制.
- 在乙二溶液中cis异构体的半衰期从20到21000秒调整.
- 第一次对cis-aminoazobenzene衍生物的X射线晶体结构揭示了前所未有的边对面的环排列.
结论:
- 二功能化模型复合体为光控制的WLA分子开关的设计参数提供了洞察力.
- 证明了阿佐烯衍生物的调节性质和增强的热稳定性.
- 这些发现为开发基于阿佐的先进光响应材料提供了新的途径.
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