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  Home > JCE Print > Journal of Chemical Education > Issues > 2000  > January  >
In the Laboratory
Molecular Photography in the Undergraduate Laboratory: Identification of Functional Groups Using Scanning Tunneling Microscopy
Leanna C. Giancarlo, Hongbin Fang, Luis Avila, Leonard W. Fine, and George W. Flynn
Department of Chemistry, Columbia University, New York, NY 10027
Cover
January 2000
Vol. 77 No. 1
p. 66
Abstract
A scanning tunneling microscope (STM) investigation of bare graphite and 11-bromoundecanol adsorbed on graphite has been performed in the undergraduate physical chemistry laboratory at Columbia University. In addition to collecting substrate (surface) and adsorbate (molecule) images, students compare their experimental STM topographs with the shapes of the frontier molecular orbitals of a structurally similar brominated alcohol generated using the Spartan computation program. This investigation stresses the use of the STM as a "molecular camera" with which students can visualize large-scale molecular assemblies and identify chemically significant portions of the molecules. Further, it demonstrates an area where theoretical calculations can be coupled with experimental measurements in a unified setting.

Featured on the Cover
More Information
*  Citation
 Giancarlo, Leanna C.; Fang, Hongbin; Avila, Luis; Fine, Leonard W.; Flynn, George W. J. Chem. Educ. 2000 77 66.
*  Keywords
 Physical Chemistry; Materials Science; Laboratory Instruction; Computer Assisted Instruction
*  History
 Created:
Last Updated:		 December 9, 1999
April 15, 2005
Link to Cover added (April 2004).
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  Home > JCE Print > Journal of Chemical Education > Issues > 2000 > January > Page 66


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