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A Small All-in-One Photon-Counting Device for Measuring Luminescence Decays to Determine the Lifetimes of Photoexcited Materials
Journal of Chemical Education ( IF 2.5 ) Pub Date : 2019-11-22 , DOI: 10.1021/acs.jchemed.9b00836 Yasuo Matsubara 1 , Akitaka Ito 2
Journal of Chemical Education ( IF 2.5 ) Pub Date : 2019-11-22 , DOI: 10.1021/acs.jchemed.9b00836 Yasuo Matsubara 1 , Akitaka Ito 2
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The lifetime of the excited state of a material is essential for characterizing its photophysical and photochemical processes and substantially affects the quantum efficiencies of its luminescence (fluorescence or phosphorescence) and photo(catalytic) reactions. However, undergraduate students are much more likely to do steady-state, rather than time-resolved, spectroscopy in a laboratory class. In this report, a small hand-held photon-counting device is proposed for this measurement within a time scale from about 100 ns to 10 s. Measurements of emission decays from excited chromium(III) in ruby as a photophysical example and ruthenium(II) tris(bipyridine), [Ru(bpy)3]2+, as a photochemical example are demonstrated using the device.
中文翻译：
一种用于测量发光衰减以确定光激发材料寿命的小型多合一光子计数装置
材料的激发态的寿命对于表征其光物理和光化学过程至关重要，并且会显着影响其发光（荧光或磷光）和光（催化）反应的量子效率。但是，本科生在实验室课堂上更有可能进行稳态光谱分析，而不是时间分辨光谱分析。在该报告中，提出了一种小型手持式光子计数设备，用于在大约100 ns到10 s的时间范围内进行此测量。使用该装置演示了红宝石中激发的铬（III）作为光物理实例和钌（II）三（联吡啶），[Ru（bpy）3 ] 2+作为光化学实例的发射衰减的测量结果。
更新日期：2019-11-28
中文翻译：
一种用于测量发光衰减以确定光激发材料寿命的小型多合一光子计数装置
材料的激发态的寿命对于表征其光物理和光化学过程至关重要，并且会显着影响其发光（荧光或磷光）和光（催化）反应的量子效率。但是，本科生在实验室课堂上更有可能进行稳态光谱分析，而不是时间分辨光谱分析。在该报告中，提出了一种小型手持式光子计数设备，用于在大约100 ns到10 s的时间范围内进行此测量。使用该装置演示了红宝石中激发的铬（III）作为光物理实例和钌（II）三（联吡啶），[Ru（bpy）3 ] 2+作为光化学实例的发射衰减的测量结果。
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