Polyacetylenes and polyynes

Peierls distortion [1] in one dimension (ID) is an inherent trait of linear conjugated polymers, leading to a bond length alternation (BLA). The usual chemical nomenclature for it is conjugation. Examples include polyacetylene and polyyne, two materials which have been studied by the physics and chemistry community for a very long time (see, e.g. the book [2] and the papers cited therein). For... 

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