在兰坦化金属有机框架中,Solvatomorphic相变和可调节的发光发射
Alena A Vasileva1,2, Pavel A Demakov1, Tatiana Y Guselnikova1
1Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia. demakov@niic.nsc.ru.
Dalton transactions (Cambridge, England : 2003)
|November 19, 2024
概括
使用和胺溶剂的新金属有机框架 (MOF) 显示可调节的发光. 由溶剂驱动的结构变化会影响光的发射,从而控制这些多孔材料的光学特性.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学
- 固态化学 固态化学
背景情况:
- 金属有机框架 (MOF) 为各种应用提供可调节的特性.
- 基于萨马 (III) 的MOF因其发光特性而被探索.
- 溶剂分子可以影响MOFs的结构和特性.
研究的目的:
- 为了合成和描述新的基于三的MOFs.
- 研究不同胺溶剂对MOF结构和发光效应的影响.
- 探索通过结构修改调整发光特性的潜力.
主要方法:
- 合成和单晶X射线衍射用于结构特征.
- 发光光谱学用于研究辐射特性.
- 粉末X射线衍射分析相位过渡.
- 用terbium ((III) 进行兴奋剂,以产生双金属光.
主要成果:
- 合成了四种新型的MOF,其配方是[Sm2{\phen) 2{\NO3) 2{\chdc) 2}·2solv,其中solv代表DMF,DMA,DEF或NFP.
- 胺溶剂决定了内部层块的方向和层对层的包装,影响发光.
- 观察到排放颜色依赖激发波长,Sm3+和phen的贡献随着包装而变化.
- 研究了相位过渡,通过使用Tb3+进行兴奋剂,获得了近白色光.
结论:
- 由溶剂选择引起的微小结构差异可以有效调整MOFs的发光.
- MOF层的包装和phenanthroline部分的近距离显著影响发光.
- 这项工作展示了设计具有可控制光学属性的功能发光MOF的策略.
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