作为调整红色到NIR发射特性在异核黄金 (I) - (I) 复合体中的工具的特皮里丁异构
David Royo1, Sonia Moreno1, María Rodríguez-Castillo1
1Departamento de Química, Instituto de Investigación en Química (IQUR), Complejo Científico Tecnológico, Madre de Dios 53, Universidad de La Rioja, 26006 Logroño, Spain. m-elena.olmos@unirioja.es.
Dalton transactions (Cambridge, England : 2003)
|February 15, 2024
概括
新的黄金-复合物与特皮里丁配体呈现出明显的光学特性. 通过X射线衍射确定的结构变化会影响发射波长,其中一个复杂的发射在红外线区域.
科学领域:
- 协调化学 协调化学
- 有机金属化学 有机金属化学
- 材料科学 是一种材料科学.
背景情况:
- 金 (I) 和 (I) 的聚合物线性链为新型复杂合成提供了一个平台.
- 与硫替代物的特皮里丁连接体是协调化学中的多功能构建块.
- 调整金属中心的协调环境可以显著改变光物理性质.
研究的目的:
- 通过功能化特皮里丁连接物合成和表征新的金 (I) / (I) 复合物.
- 研究这些综合体的结构多样性和协调模式.
- 探索结构特征与光学特性 (包括发光) 之间的关系.
主要方法:
- 合成含有三个不同的特皮里丁配体 (L1,L2,L3) 的金 (I) / (I) 复合物.
- 进行X射线衍射研究,以确定固态结构和协调环境.
- 光学光谱学 (发射) 用于描述光物理性质.
- 密度函数理论 (DFT) 计算以了解电子转换.
主要成果:
- 形成了三个新的复合物: [AuTl C6Cl5) 2 L1], [{AuTl C6Cl5) 2 L2]和 [AuTl C6Cl5) 2 L3].
- X射线衍射揭示了L1作为合联结体,而L2和L3则充当桥接联结体,导致不同的I协调数.
- 综合体1显示红外辐射,而综合体2和3则在可见范围边界附近发射.
- DFT计算提供了对控制观察到光学属性的电子转换的见解.
结论:
- 二连体的协调模式决定了二中心的结构结构和协调指数.
- 金复合物的结构变化直接影响了它们的发光行为.
- 这些发现有助于设计具有可调节光学特性的金属复合体,以应用于潜在的应用.
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