Photoconductivity of Some Metathesis Polymerized Polyacetylenes

Xerographic photoconductivity of 3,5-dinitrobenzoates of poly[1-(p-methoxyphenyl)penta-1,3-diyn-5-ol], poly[1-(2'-methoxyphenyl)penta-1,3-diyn-5-ol] and poly[1-(p-N,N-dimethylaminophenyl)penta-1,3-diyn-5-ol] [DN-1,2-PMDO, DN-1,4-PMDO and DN-1,4-PDDO] is dependent on the electron donating side chains. From the transient photoconductivity signal on a sub-nanosecond time scale, a plausible mechanism for the charge carrier generation and charge transporting properties of these polymers is proposed.