Abstract
The confinement potential for solitons in polyacetylene due to the interchain π-electron hopping is calculated. The confinement potential localizes neutral solitons within 35 to 70 lattice constants from the edge of the chain, which is consistent with a recent triple magnetic resonance experiment. The photogenerated charged soliton pair forms bound states due to the confinement potential. At low temperatures, the bound pair with large quantum number cascades radiatively down to the ground state, giving rise to the luminescence.
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