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Updated: March 26, 2000


3-OCTADECYLPYRROLE Conductive Polymers

Appearance: Pale tan powder
Revision: 1.3 (March 2000)

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[3ODOP-PDF]  Instructions (PDF)
[3ODP-PDF]  Material Safety Data Sheet (PDF)

General Information

3-OCTADECYLPYRROLE 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-OCTADECYLPYRROLE is supplied pure, as a powder. It should be refrigerated upon receipt, and stored at 2 - 8°C.

Instructions for Use

Formation 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.

Detailed instructions for monolayer formation, oxidation and monolayer manipulation are described by Hong et al.2 Pure 3-OCTADECYLPYRROLE, 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-OCTADECYLPYRROLE applied to the surface of a 10 wt % solution of ferric chloride.


  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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