关闭发光传感器,白光发射和二维兰坦化MOF的磁性研究
Krishna Manna1, Jean-Pascal Sutter2, Srinivasan Natarajan1
1Framework Solids Laboratory, Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore- 560012, India. snatarajan@iisc.ac.in.
Dalton transactions (Cambridge, England : 2003)
|November 28, 2023
概括
兰化物金属有机框架 (MOF) 为白光发射和传感应用进行了合成. 这些MOF显示出用于检测农药和爆炸物的高量子产量,展示了它们的多功能实用性.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学 有机化学
- 纳米技术纳米技术
背景情况:
- 兰化物金属有机框架 (MOF) 是具有可调节性质的先进材料.
- 开发高效的白光发射器和敏感的化学传感器仍然是关键的研究领域.
- 添加特定的配体可以显著影响MOF的特征.
研究的目的:
- 为了合成新的以兰他尼德为基础的MOF,使用2,5-bis(prop-2-yn-1-yloxy) terephthalic acid (2,5-BPTA) 作为主要配体.
- 研究这些MOF在白光发射和敏感分析物检测方面的潜力.
- 为了探索合成的兰坦化MOFs的磁性特性.
主要方法:
- 兰化物MOF的溶热合成与不同的兰化物离子 (Y,Eu,Gd,Tb,Dy) 和辅助配体 (2,2'-双和1,10-).
- 单晶X射线衍射用于结构阐明.
- 光发光谱学用于排放研究和量子产量确定.
- 用于传感应用和磁感应度测量的度分析.
主要成果:
- 对于选定的Gd和Dy化合物,证实了二维MOF结构.
- 基于的MOF表现出蓝色排放,而Eu和Tb化合物表现出特有的红色和绿色排放.
- 通过在基于Y的MOF矩阵中混合Eu3+和Tb3+离子来实现可调节的白光发射,量子产量高达43%.
- 在水溶液和纸条上,在ppb水平上,经过敏感和选择性检测,可以检测到阿津-甲基农药和三甲 (TNP).
- 在低温下,Tb和Dy衍生品显示磁化缓慢放松.
结论:
- 刚性π-结合联体,如2,2'-双和1,10-类素,可以增强稀土MOF的性能.
- 合成的MOF有望用于白光发射装置,敏感化学传感和磁性材料的应用.
- 这项研究突出了兰化物MOF在先进技术应用中的多功能性.
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