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Macromolecules 1996, 29, 546-552
Comparing and Contrasting the Effects of Iodine Doping on Different Types of Polyacetylene Films James W. Hall† and Georgia A. Arbuckle* Department of Chemistry, Rutgers University, Camden, New Jersey 08102 Received August 22, 1994; Revised Manuscript Received October 17, 1995X
ABSTRACT: A comparison between Shirakawa polyacetylene or S-(CH)x, Naarmann polyacetylene or N-(CH)x, and Tsukamoto polyacetylene or ν-(CH)x during iodine vapor phase doping has been made. Thin films of each type of polyacetylene were polymerized directly onto quartz crystal substrates. The quartz crystal microbalance (QCM) is used to measure the mass change during doping (oxidation) of polyacetylene with iodine in the vapor phase. For the same mass of dopant, the highest conductivity is observed for ν-(CH)x. The most dense polyacetylene, ν-(CH)x, has the smallest diffusion coefficient on the order of 10-14 cm2/s. The diffusion coefficient for short times (
