X-ray diffraction study of poly(3-n.decylpyrrole), polypyrrole, and their monomers

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Abstract
The structure of the organic intrinsically conducting polymers polypyrrole and poly(3‐n.decylpyrrole) was investigated by x‐ray diffraction. The liquid monomers pyrrole and 3‐n.decylpyrrole were also measured. From the analysis of all the data, information on the molecular and intermolecular correlations in the polymers was obtained. Both the polymeric systems are found to maintain a substantial planarity of the aromatic rings, i.e., the alkylic substituent in poly(3‐n.decylpyrrole) does not affect the planarity of the compound. Possible effects related to the size of the counterion are also discussed.