多重排放和明亮的白色发光来自金 ((I) O,O'-di ((alkyl) diithiophosphate二次体
Young-A Lee1, James E McGarrah, Rene J Lachicotte
1Department of Chemistry, University of Rochester, Rochester, NY 14627, USA.
Journal of the American Chemical Society
|September 5, 2002
概括
黄金(I) 二元体通过气友性相互作用形成一维链,表现出明亮的发光. 这些发光黄金复合体显示温度依赖的辐射颜色,为先进材料提供了潜力.
科学领域:
- 无机化学 无机化学
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
背景情况:
- 金 ((I) 复合物与含硫配体具有有趣的结构和光物理性质.
- 气友性相互作用 (Au...Au) 在黄金化合物的自我组装和性质中起着至关重要的作用.
研究的目的:
- 为了研究Au(I) 二次体的结构和发光性质,特别是Au(2) [S(2) P(OR) ],其中R = Me,Et.
- 了解气友性相互作用对固态结构和排放行为的影响.
- 探索温度和溶剂对这些黄金复合物的发光效应的影响.
主要方法:
- 单晶X射线衍射以确定固态结构.
- 在不同温度 (包括77K) 和不同溶剂玻璃中进行光发光谱学.
- 生命周期测量用于分配排放频段.
- 度依赖研究以了解兴奋状态相互作用.
主要成果:
- 通过气友性相互作用,Au (I) 二元体自组合成1D链,其分子间Au...Au距离与分子内相似.
- 这些复合物在固态状态下是发光的,在低温下发射强度会增加.
- 在77K时观察到多个发射频段,分配给不同的电子过渡 (单元金属中心1MC,三元金属中心3MC和联体到金属电荷转移 (LMCT)).
- 在冷溶液中观察到显著的热色变化 (随温度变化的颜色).
结论:
- 气友性相互作用是1D链形成的关键驱动因素,也是这些Au (I) 二次体的固态特性.
- 发光特性可根据温度和溶剂调节,表明温度传感或显示应用的潜力.
- 独特的发射频段为这些黄金复合物的兴奋状态动态和电子结构提供了洞察力.
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