دورية أكاديمية
A Small All-in-One Photon-Counting Device for Measuring Luminescence Decays to Determine the Lifetimes of Photoexcited Materials
| العنوان: | A Small All-in-One Photon-Counting Device for Measuring Luminescence Decays to Determine the Lifetimes of Photoexcited Materials |
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| اللغة: | English |
| المؤلفون: | Matsubara, Yasuo (ORCID |
| المصدر: | Journal of Chemical Education. Jan 2020 97(1):300-304. |
| الإتاحة: | Division of Chemical Education, Inc. and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc |
| Peer Reviewed: | Y |
| Page Count: | 5 |
| تاريخ النشر: | 2020 |
| نوع الوثيقة: | Journal Articles Reports - Descriptive |
| Education Level: | Higher Education Postsecondary Education |
| Descriptors: | Undergraduate Students, College Science, Lighting, Chemistry, Hands on Science, Spectroscopy, Measurement, Science Laboratories |
| DOI: | 10.1021/acs.jchemed.9b00836 |
| تدمد: | 0021-9584 |
| مستخلص: | 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)[subscript 3]][superscript 2+], as a photochemical example are demonstrated using the device. |
| Abstractor: | As Provided |
| Entry Date: | 2020 |
| رقم الأكسشن: | EJ1240883 |
| قاعدة البيانات: | ERIC |
Find this issue from the American Chemical Society | تدمد: | 0021-9584 |
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| DOI: | 10.1021/acs.jchemed.9b00836 |