在金属有机框架中对光或热激活的延迟光进行热控制
Huili Sun1, Qiangsheng Zhang2, Liuli Meng1
1MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, IGCME, GBRCE for Functional Molecular Engineering, School of Chemistry, Sun Yat-Sen University Guangzhou 510006 China panm@mail.sysu.edu.cn.
Chemical science
|June 14, 2024
概括
一种新的金属有机框架 (MOF) 材料通过结合反向系统间交叉 (RISC) 和系统间交叉 (ISC) 机制,表现出可热切换的光辐射. 这种独特的MOF显示出由于其pH敏感性而具有传感应用的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
- 纳米技术 纳米技术
背景情况:
- 金属有机框架 (MOF) 为高级应用提供可调节的特性.
- 捐赠者-接受者 (D-A) 配体对于设计功能性MOF材料至关重要.
- 控制像发光这样的光物理性质是传感和光电子技术的关键.
研究的目的:
- 合成一种新型的MOF,其中包含一个定制的DA配体.
- 研究由联合系统间交叉 (ISC) 和反向系统间交叉 (RISC) 产生的温度依赖的光发光特性.
- 探索该材料在传感应用中的潜力,特别是氨检测.
主要方法:
- 使用酸和一个定制的D-A配体与蓝受体和硫烯捐赠体进行溶热合成.
- 描述MOF的结构和组成.
- 光发光光谱学用于研究UV,可见光和近红外 (NIR) 范围内的温度依赖的辐射,一光子吸收 (OPA) 和两光子吸收 (TPA).
主要成果:
- 成功合成了一种新的MOF材料.
- 由于RISC和ISC的不同温度窗口,MOF表现出可热切换的发光.
- 通过OPA和TPA观察到广泛的激发能力 (UV到NIR),以及通过氨气传感证明的pH敏感排放.
结论:
- 将定制的D-A配体集成到MOF中,可以创建具有独特的温度可切换光发光的材料.
- 该材料的广泛激发窗口和pH敏感度突出显示了它在先进光学应用中的多功能性.
- 证明的氨感应能力强调了这种MOF在化学检测中的潜力.
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