Polyconjugated carbon chains consist of alternating single and double bond. The electrons are highly delocalized and easily polarizeble, features that play important roles in the electrical and optical properties of polyconjugated systems, making them rather different from conventional electronic systems. Moreover, the intrinsic quasi-one-dimensional nature and the extent of both intra and interchain delocatlization of electrons are important for the structural, electrical, and optical properties of polyconjugated systems.
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