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Low-energy Cathodoluminescence for (Oxy)Nitride Phosphors
Published on: November 15, 2016
通过光火在Cu的晶体中进行氧气气体探测 (xantphos) (phen) +复合体)
Conor S Smith1, Charles W Branham, Brian J Marquardt
1Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA.
Journal of the American Chemical Society
|September 22, 2010
概括
高排放的铜 (I) 化合物作为氧气传感器,其传感性能与晶体空隙空间有关. 这些基于铜的传感器比贵金属替代品具有优势,使成本效益高的批量生产成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学
- 化学传感器 化学传感器
背景情况:
- 铜 (I) 化合物因其排放性质和化学传感中的潜在应用而受到探索.
- 氧气气体传感对于环境监测,工业安全和医学诊断至关重要.
- 开发高效,具有成本效益的氧气传感器是一个持续的研究目标.
研究的目的:
- 研究新型晶体铜 (I) 化合物的氧气传感能力.
- 为了将传感性能与这些化合物的结构性质相关联,特别是真空空间.
- 评估这些铜基材料作为贵金属基传感器的替代品的潜力.
主要方法:
- 合成四种高排放的铜I) 化合物:CuPOPdmptfpb,Cuxantphosdmptfpb,Cuxantphosdipptfpb和Cuxantphosdipppftpb.
- 晶体结构分析以确定空虚空间.
- 使用发光灭的氧气传感测量.
- 分析斯特恩-沃尔默图表以量化传感参数,如斯特恩-沃尔默常数 (K(SV)).
- 生命周期和量子收益率测量.
主要成果:
- 所有四种铜 (I) 化合物都表现出氧气传感能力.
- 传感性能与水晶结构内的计算空虚空间直接相关.
- 化合物[Cu(xantphos) ((dmp) ]tfpb表现出卓越的性能,寿命长 (~30μs),量子产量高 (φ = 0.66),K(SV为5.65,响应时间快 (51 ms).
- 这些基于铜的传感器表现出与一些基于的传感器相比的或更好的性能.
- 线性斯特恩-沃尔默行为和可重现的K (SV) 值表明晶体材料中的同质感应点.
结论:
- 研究的铜 (I) 化合物是有效的氧气传感器,其性能可以通过晶体结构调节.
- 化合物[Cu(xantphos) ((dmp) ]tfpb由于其优异的传感特性,显示出显著的前景.
- 用铜取代贵金属为传感器开发提供了具有技术意义和成本效益的方法.
- 观察到的线性斯特恩-沃尔默行为简化了校准,使这些材料适合于廉价,大规模生产,一次性使用的传感器.
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