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Ratiometric optical thermometer based on the use of manganese(II)-doped Cs3Cu2I5 thermochromic and fluorescent halides
Microchimica Acta ( IF 5.3 ) Pub Date : 2019-10-28 , DOI: 10.1007/s00604-019-3881-z
Peng Du 1, 2 , Peiqing Cai 3 , Weiping Li 1, 2 , Laihui Luo 1, 2 , Yafei Hou 1, 2 , Zugang Liu 3
Affiliation  

The inconsistent thermal quenching performance of manganese(II)-doped Cs3Cu2I5 microparticles is exploited in a highly sensitive noninvasive optical thermometer. The ratio of the emissions of Cu(II) and Mn(II) ions in the microparticles is highly temperature dependent in the range from 298 to 498 K. The best absolute and relative sensitivities are 0.547 K−1 and 0.525% K−1, respectively. The emission spectrum, under 300-nm photoexcitation, has emission peaks at 448 and 556 nm. This is the result of energy transfer between the Cu(II) and Mn(II) ions whose efficiency can reach up to 57% when the Mn(II) ion concentration is 2 mol%. The emission color of the microparticles changes from cyan to green when increasing the temperature from 298 to 498 K. Graphical abstract Synthesis of novel Mn(II)-doped Cs3Cu2I5 thermochromic halides with admirable luminescent behaviors for high sensitive ratiometric thermometry and safety sign in high temperature environment. Synthesis of novel Mn(II)-doped Cs3Cu2I5 thermochromic halides with admirable luminescent behaviors for high sensitive ratiometric thermometry and safety sign in high temperature environment.

中文翻译:

基于使用锰 (II) 掺杂的 Cs3Cu2I5 热致变色和荧光卤化物的比例光学温度计

锰 (II) 掺杂的 Cs3Cu2I5 微粒不一致的热猝灭性能在高灵敏度的无创光学温度计中得到了利用。微粒中 Cu(II) 和 Mn(II) 离子的排放比例在 298 至 498 K 范围内高度依赖于温度。最佳绝对和相对灵敏度为 0.547 K-1 和 0.525% K-1,分别。在 300 nm 光激发下的发射光谱在 448 和 556 nm 处具有发射峰。这是 Cu(II) 和 Mn(II) 离子之间能量转移的结果,当 Mn(II) 离子浓度为 2 mol% 时,其效率可达 57%。当温度从 298 K 增加到 498 K 时,微粒的发射颜色从青色变为绿色。图形摘要合成新型 Mn(II) 掺杂的 Cs3Cu2I5 热致变色卤化物,具有令人钦佩的发光行为,用于高温环境下的高灵敏度比例温度测量和安全标志。新型Mn(II)掺杂Cs3Cu2I5热致变色卤化物的合成,其具有令人赞叹的发光行为,用于高温环境下的高灵敏比例测温和安全标志。
更新日期:2019-10-28
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