通过结构设计来定制发光氧的灵敏度及其在压力诱导的排放增强中的应用
Hong-Jin Zhang1, Zong-Ren Chen1, Wan-Tao Chen2
1Jiangmen Key Laboratory of Synthetic Chemistry and Cleaner Production, School of Environmental and Chemical Engineering, Wuyi University Jiangmen Guangdong 529000 PR China wyuchemyjw@126.com wyuchemcling@126.com.
Chemical science
|September 17, 2025
概括
本研究介绍了显示压力诱导排放增强 (PIEE) 的协调聚合物. 研磨这些材料降低了氧气的敏感性,导致增强的发光,为氧气感应材料提供了一个新的策略.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
- 固态物理 固态物理
背景情况:
- 压力诱导排放增强 (PIEE) 是一种罕见的现象,具有显著的研究潜力,由于大气氧的影响,在多孔材料中经常被忽视.
- 发光探头和三重氧 (T1(O2)) 之间的能量转移对基于发光的氧气传感的精确影响仍然不清楚,这使得分子级调整变得复杂.
- 由于复杂的能量转移机制,开发具有可调节的基于发光的氧气灵敏度的材料具有挑战性.
研究的目的:
- 研究协调聚合物的分子结构,多孔性和氧气敏感性之间的关系.
- 在新型协调聚合物系统中探索压力诱导的排放增强 (PIEE) 现象.
- 为展示PIEE的先进氧气传感材料建立分子设计策略.
主要方法:
- 一系列具有不同结构和多孔性的协调聚合物 (CuXBP,X = I,Br,Cl) 的合成和表征.
- 评估氧气灭效率和压力诱导的发光变化.
- 计算模拟以了解发光探头和三重氧 (T1(O2)) 之间的能量传输动态.
主要成果:
- 合成的协调聚合物 (CuXBP) 呈现出明显不同的氧气火效率 (7.7%至95.8%),尽管结构和多孔性相似.
- 计算分析表明,CuIBP的高氧火效率与其兴奋状态和T之间的最小能量差距 (742 cm-1) 有关.
- 研磨CuIBP降低了其孔隙性,显著降低了氧气灵敏度 (从95.8%降至33.2%) 并导致在环境条件下发光度增加了两倍以上,证明了PIEE.
结论:
- 该研究展示了设计具有可调节氧气传感能力和压力诱导排放增强 (PIEE) 的材料的新策略.
- 在研磨后降低CuIBP的孔隙性有效地减弱了氧气火,从而增加了发光.
- 这项工作为开发用于氧气传感应用的先进发光材料提供了基础.
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