This paper describes experiments on the motion of an extra electron (or hole) on perfect straight polymer chains. The mobility is -found to be ultra high, greater than for any conventional semi-conductor, and yet the drift velocity is found to saturate at a low value, close to the velocity of sound. This new form of motion is that expected theoretically for an acoustic polaron in one dimension.
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Donovan et al. (1985) studied this question.
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