基于碳醇的金属有机框架和理论研究对酸的独特光开启和关闭反应
Junyi Qiao1, Xinyao Liu1, Lirong Zhang1
1State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China.
Journal of the American Chemical Society
|September 7, 2022
概括
本研究介绍了JLU-MOF111,一种光金属有机框架 (LMOF) 材料,它对各种酸具有独特的启动和关闭光反应. 这种进步为检测危险物质提供了更高的灵敏度和可靠性.
科学领域:
- 材料科学
- 化学学
- 纳米技术
背景情况:
- 光灭 (关闭) 检测危险物质的方法容易导致信号丢失和环境干扰.
- 使用发光金属有机框架 (LMOF) 启动光检测提供了更好的信号稳定性,但很少报告,缺乏理论理解.
- 开发具有启动传感能力的新型LMOF对于推进检测技术至关重要.
研究的目的:
- 通过使用稳定的Y(III) 集群的LMOF,展示了对酸的独特开启和关闭光反应的第一个例子.
- 通过理论计算阐明传感机制.
- 展示LMOF对危险物质的敏感和可靠检测的潜力.
主要方法:
- 基于12个连接的六核Y (III) 集群LMOF (JLU-MOF111) 的合成和表征,具有pcu拓.
- 对各种无机和有机酸的光反应的研究.
- 使用理论计算 (例如,DFT) 来理解传感机制.
主要成果:
- JLU-MOF111对一系列酸具有明显的开启和关闭光反应.
- 在ppb水平上超敏感启动HNO3,HCl,HBr和TFA的检测极限 (LOD).
- 理论计算证实了团在配体中受约束的旋转会减少非辐射能量消耗,从而导致激活反应.
- 关闭-启动反应归因于兴奋状态电子转移和抑制的非辐射衰变.
结论:
- JLU-MOF111是一种新的LMOF材料,具有特殊的开启和关闭感应能力.
- 这项研究提供了对LMOF的开启和关闭光传感机制的理论见解.
- 这项工作指导了基于LMOF的传感器的开发,以加强危险物质的检测.
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