Abstract
Infrared and optical studies have been made on a segmented polyacetylene in which up to 17% of the CH units have been replaced by (sp
3-hydribized) CHD units. The valence-to-conduction band transition in the segmented polymer is shifted to slightly higher frequency and reduced by half in intensity. Treatment with iodine produced strong doping-induced infrared absorption at 900, 1290 1400 cm
−1 and midgap. The maximum dopant concentration achieved appeared to be smaller than in ordinary (CH)
x.