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Updated: March 26, 2000

3-OCTADECANOYLPYRROLE PRODUCT INFORMATION

3-OCTADECANOYLPYRROLE Conductive Polymers[Discontinued]Product Name: 3-OCTADECANOYLPYRROLECatalog Numbers:    3ODOPAppearance:Pale purple powderRevision:1.3 (March 2000)

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General Information3-OCTADECANOYLPYRROLE is a surface-active pyrrole derivative which may be oxidised to form a highly conductive molecular monolayer which is an ideal material for electron microscopy substrates.¹ It may be mixed with pyrrole and applied to a water surface containing ferric chloride (FeCl₃). Langmuir-Blodgett techniques may be used to control the film produced.

3-OCTADECANOYLPYRROLE is supplied pure, as a powder. It should be refrigerated upon receipt, and stored at 2 - 8°C. Instructions for UseFormation of EM substrate films:¹ Cast a solution of the pyrrole in ethyl acetate (0.0015 g/mL) onto an air-water interface where the water contains 1 wt % ferric chloride. Free pyrrole as a vapor is added to initiate polymerization (place both the solution and an open container of pyrrole under a bell jar); the films may be controlled by using dental floss to control their spread, or more effectively by using a Langmuir-Blodgett trough for their generation. Drop the grids onto the film, then pick them up, wash as for thin carbon films, and apply the sample as usual.

General: Detailed instructions for monolayer formation, oxidation and monolayer manipulation are described by Hong et al.² Pure 3-OCTADECANOYLPYRROLE, or 1 : 300 or 1 : 5000 mixtures with pyrrole, are applied to the surface of a 1 wt % ferric chloride solution, then washed with deionized water and 5 % HCl after oxidation. Highly conducting films may be prepared by the method of Bocchi,³ using a solution of pure 3-OCTADECANOYLPYRROLE applied to the surface of a 10 wt % solution of ferric chloride. References

1. Simon, M. N.; Lin, B. Y.; Lee, H. S.; Skotheim, T. A., and Wall, J. S.: Proc. XIIth Int. Congress for Electr. Micr., San Francisco Press, Inc., San Francisco, CA, 1990; Vol. 1, pp. 290-291.

2. Hong, K., and Rubner, M. F.; Thin Solid Films, 1988, 160, 187; Hong, K.; Rosner, R. B., and Rubner, M. F.; Chem. Mater., 1990, 2, 82.

3. Bocchi, V., and Gardini, G. P.; J. Chem. Soc. Chem. Commun., 1986, 148.

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