Using a topological approach, we consider the nature of intrinsic structural defects in a real trans-polyacetylene chain. We show that remnant cis segments are internal diaclination loops having two components: a wedge loop of strength ±π/3 and a twist loop of strength π, while defects of the soliton type are a combination of a point dislocation and an external twist disclination loop of strength π.
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S. Etemad, A. J. Heeger, and A. G. McDiarmid, “Polyacetylene, (CH)x: The prototype conducting polymer,” Annu. Rev. Phys. Chem.,33, 443–469 (1982).
H. W. Streitwolf, “Physical properties of polyacetylene,”, Phys. Status solidi B,127, No. 1, 11–54 (1985).
K. Ehinger and S. Roth, “Non-solitonic conductivity in polyacetylene,” Phil. Mag. B,53, No. 4, 301–320 (1986).
“Conducting polymers R&D continues to grow,” Chem. Eng. News,60, No. 16, 29–33 (1982).
V. I. Vladimirov and A. E. Romanov, Disclinations in Crystals [in Russian], Nauka, Leningrad (1986).
J. C. M. Li and J. J. Gilman, “Disclination loops in polymers,” J. Appl. Phys.,41, No. 11, 4248–4256 (1970).
V. A. Likhachev and R. Yu. Khairov, Introduction to the Theory of Disclinations [in Russian], Izdat. Leningr. Univ., Leningrad (1975).
V. I. Vladimirov and N. A. Pertsev, “Molecular disclination defects in polymers,” in: Experimental Investigation and Theoretical Description of Disclinations [in Russian], Fiz.-Tekhn. Inst. im. A. F. Ioffe, Akad. Nauk SSSR, Leningrad (1984), pp. 37–65.
D. H. Reneker, “Point dislocations in crystals of high polymer molecules,” J. Polym. Sci.,59, No. 168, S39-S42 (1962).
A. S. Davydov, Solitons in Molecular Systems [in Russian], Nauk. Dumka, Kiev (1984).
V. E. Volovik and V. P. Mineev, Physics and Topology [in Russian], Znanie, Moscow (1980).
P. R. Surjan and H. Kuzmany, “Interruption of conjugations of polyacetylene chains,” Phys. Rev. B,33, No. 4, 2615–2624 (1986).
H. W. Gibson, R. J. Weagley, R. A. Mosher et al., “Molecular structure of trans-polyacetylene: The presence of remnant cis units and their influence on solitonic formation and diffusion,” Phys. Rev. B,31, No. 4, 2338–2342 (1985).
J. L. Bredas and G. B. Street, “Polarons, bipolarons, and solitons in conducting polymers,” Acc. Chem. Res.,18, No. 10, 309–315 (1985).
Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 25, No. 1, pp. 71–74, January–February, 1989.
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Posudievskii, O.Y., Posudievskii, A.Y. & Korol', É.N. Topological nature of intrinsic structural defects in a trans-polyacetylene chain. Theor Exp Chem 25, 63–65 (1989). https://doi.org/10.1007/BF00580299
- Structural Defect
- Topological Nature
- Topological Approach
- Soliton Type