Solitons, Twistons, Bubbles and Crystallinity in Conducting Polymers

Abstract
We discuss the interference of π - electronic and structural defects for the crystal structure in polyacethylene. We consider the local crystallografic modifications caused by solitons and the special type of backbone solitons - the twistons. The role of twistons in formation of hexagonal or tetragonal phases with unhindered rotations at finite dopant concentration is discussed.