The structure of a fully deuterated sample of the conducting polymer poly(3-n.decylpyrrole) was investigated by neutron and x-ray diffraction. The different sensitivity of the two probes to deuterium atoms allowed us to obtain novel insights about the intermolecular organization of the polymer, with special focus on the alkyl substituent. The polymer turns out to be arranged in parallel layers. Within each layer, neighboring pyrrole rings maintain a coplanar disposition, whereas the alkyl decane tails are kinked out of the pyrrole plane. Monomers belonging to different adjacent layers display a high degree of superposition, due to a considerable overlap of both pyrrole rings and decane tails. Thus, despite its folded conformation, the alkyl substituent does not affect the short-range order of the compound, but rather contributes to determine its layered structure.
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22 April 2003
Research Article|
April 22 2003
Neutron and x-ray scattering study of fully deuterated poly(3-n.decylpyrrole)
A. Orecchini;
A. Orecchini
INFM, OGG-Grenoble, B.P. 156, Grenoble, France
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C. Petrillo;
C. Petrillo
INFM and Dipartimento di Fisica, Politecnico di Milano, I-20133 Milano, Italy
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G. Ruggeri;
G. Ruggeri
Dipartimento di Chimica e Chimica Industriale, Universitá di Pisa, I-56124 Pisa, Italy
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R. Cagnolati
R. Cagnolati
Dipartimento di Fisica, Universitá di Pisa, I-56124 Pisa, Italy
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A. Orecchini
C. Petrillo
G. Ruggeri
R. Cagnolati
INFM, OGG-Grenoble, B.P. 156, Grenoble, France
J. Chem. Phys. 118, 7690–7699 (2003)
Article history
Received:
June 17 2002
Accepted:
January 31 2003
Citation
A. Orecchini, C. Petrillo, G. Ruggeri, R. Cagnolati; Neutron and x-ray scattering study of fully deuterated poly(3-n.decylpyrrole). J. Chem. Phys. 22 April 2003; 118 (16): 7690–7699. https://doi.org/10.1063/1.1563249
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