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  Home > JCE Print > Journal of Chemical Education > Issues > 2004  > April  >
In the Laboratory
Investigating Intermolecular Interactions via Scanning Tunneling Microscopy. An Experiment for the Physical Chemistry Laboratory
David Pullman and Karen I. Peterson
Department of Chemistry, San Diego State University, San Diego, CA 92182-1030
Cover
April 2004
Vol. 81 No. 4
p. 549
Abstract
A laboratory experiment is presented that uses a scanning tunneling microscope to probe intermolecular interactions. In the first part of the project, the students produce and analyze images of graphite and use these images to calibrate the scan size of the instrument. In the second part, the students produce images of a decanol monolayer on the graphite surface. These images are analyzed by drawing reasonable monolayer structures where the decanols are spaced according to the dimensions found in the images. These structures are discussed in terms of intermolecular bonding and van der Waals radii.
Supplement
Instructor notes, a handbook that introduces key concepts about STM, directions for operation of the STM, and STM projects are available.
*  Contents JCE2004p0549W.doc (Microsoft Word)
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More Information
*  Citation
 Pullman, David; Peterson, Karen I. J. Chem. Educ. 2004 81 549.
*  Keywords
 Intermolecular Forces; Laboratory Instruction; Physical Chemistry; Surface Science
*  History
 Created:
Last Updated:		 March 3, 2004
February 23, 2005
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