Helical polyacetylene synthesized under chiral nematic liquid crystals

摘要: Abstract We synthesized helical polyacetylene films under asymmetric and anisotropic reaction field consisting of chiral nematic (N * ) liquid crystals. A series axially binaphthols phenylcyclohexyl derivatives were used as dopants to induce N Acetylene polymerizations carried out with Ti(O- n -Bu) 4 -Et 3 Al field. Measurements SEM CD spectra showed that the are composed clockwise or counter-clockwise structures not only in fibril but also each polyene chain. By virtue its high electrical conductivity 1.51.8 x 103 S/cm after iodine doping, might serve a molecular solenoid based on conducting polymer. The helicity present film suggests feasibility second-order nonlinear optical material.