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  Home > JCE Print > Journal of Chemical Education > Issues > 2004  > November  >
In the Laboratory
Parallel Combinatorial Synthesis of Azo Dyes: A Combinatorial Experiment Suitable for Undergraduate Laboratories
Benjamin W. Gung and Richard T. Taylor
Department of Chemistry and Biochemistry, Miami University, Oxford, OH 45056
Cover
November 2004
Vol. 81 No. 11
p. 1630
Abstract
A parallel combinatorial synthesis of azo dyes experiment was developed that uses distinct colors to illustrate the concept of diversity and structure–function relationships. This experiment is suitable for undergraduate laboratories and has been used by both chemistry majors and nonmajors undergraduates in Miami University. Azo dyes can be prepared easily in one laboratory period and were chosen to illustrate the concept of diversity oriented synthesis. In the experiment, the positions of the laboratory are divided into a grid. Each student produces a unique azo dye, whose structure is coded according to his or her lab bench position. At the end of the experiment, a multifiber strip is dyed using the student's own synthetic dye. A colorful spectrum of azo dyes are produced collectively by the class.

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Supplement
Instructions for the students, notes for the instructor, and a sample lab report are available.
*  Contents JCE2004p1630W.doc (Microsoft Word)
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JCE2004p1630W.pdf

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More Information
*  Citation
 Gung, Benjamin W.; Taylor, Richard T. J. Chem. Educ. 2004 81 1630.
*  Keywords
 Combinatorial Chemistry; Dyes / Pigments; Laboratory Instruction; Organic Chemistry; Organic Synthesis
*  History
 Created:
Last Updated:		 September 27, 2004
October 5, 2004
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