A Small All-in-One Photon-Counting Device for Measuring Luminescence Decays to Determine the Lifetimes of Photoexcited Materials

Autor/inn/en	Matsubara, Yasuo; Ito, Akitaka
Titel	A Small All-in-One Photon-Counting Device for Measuring Luminescence Decays to Determine the Lifetimes of Photoexcited Materials
Quelle	In: Journal of Chemical Education, 97 (2020) 1, S.300-304 (5 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Matsubara, Yasuo) ORCID (Ito, Akitaka)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0021-9584
Schlagwörter	Undergraduate Students; College Science; Lighting; Chemistry; Hands on Science; Spectroscopy; Measurement; Science Laboratories + Suchen Sie Ihr Suchwort? Beleuchtung; Chemie; Spektroskopie; Messverfahren
Abstract	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. (As Provided).
Anmerkungen	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
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01