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  Home > JCE Print > Journal of Chemical Education > Issues > 1999  > January  >
In the Laboratory
Laser-Induced Fluorescence of Lightsticks
Carl Salter, Kevin Range, and Gail Salter
Moravian College, Department of Chemistry, Bethlehem, PA 18018-6650
Cover
January 1999
Vol. 76 No. 1
p. 84
Abstract
Used mini lightsticks will fluoresce when inserted in a UV laser beam, making it easy to demonstrate that light of the same color is produced in both fluorescence and chemiluminescence. The chemiluminescence (CL) spectrum and the laser-induced fluorescence (LIF) spectrum obtained from a red mini lightstick are presented and compared, and strong similarity is noted: both spectra show peaks at 630 and 480 nm with shoulders at 670 and 420 nm; the relative sizes of these features are roughly the same. The similarity of the spectra is consistent with the previously reported mechanism for the chemiluminescence reaction in lightsticks, in which energy from an oxidation reaction is transferred to a dye molecule-the dye's fluorescence spectrum matches the light produced by the lightstick.
More Information
*  Citation
 Salter, Carl; Range, Kevin; Salter, Gail. J. Chem. Educ. 1999 76 84.
*  Keywords
 Physical Chemistry; Photochemistry; Lasers / Laser Spectroscopy; Fluorescence Spectrometry; Luminescence; Laboratory Instruction
*  History
 Created:
Last Updated:		 June 15, 1999
June 22, 2005
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  Home > JCE Print > Journal of Chemical Education > Issues > 1999 > January > Page 84


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