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  Home > JCE Print > Journal of Chemical Education > Issues > 2002  > November  >
In the Laboratory
Triboluminescent Crystals from the Microwave Oven
Bruce W. Baldwin
Department of Chemistry, Spring Arbor University, Spring Arbor, MI 49283

David M. Wilhite
Pharmacia Corporation, Kalamazoo, MI 49001
Cover
November 2002
Vol. 79 No. 11
p. 1344
Abstract
Anthranilic acid was acetylated in a microwave oven (1,000 W) by irradiating for one minute at full power in a 100 mL beaker fitted with a glass funnel as condenser. After cooling, yellow fluorescing crystals were often obtained; but, if not, recrystallization from 10% water–methanol yielded cubes that fluoresced brightly under 360 nm light. Crushing the crystals between two watch glasses in a darkened room demonstrated the triboluminescent effect (i.e., the production of bright blue sparks when the crystals are fractured).

See Letter re: this article.

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*  Citation
 Baldwin, Bruce W.; Wilhite, David M. J. Chem. Educ. 2002 79 1344.
*  Keywords
 Aromaticity / Aromatics; Crystallography / Crystal Growth; Introductory / High School Chemistry; Organic Synthesis
*  History
 Created:
Last Updated:		 September 30, 2002
March 16, 2005
Link to Cover added (April 2004). Link to Letter added (June 2004).
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