Y. Sonoda, K. Kaeriyama
1992
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0
Influential Citations
11
Citations
Journal
Polymer
Abstract
Abstract Poly(p-phenylene-1,3,5-hexatrienylene) (1P) was prepared by the Wittig reaction of terephthalaldehyde with bis-ylide derived from trans-1,4-bis(triphenylphosphonium)-2-butene dichloride. The polymer was an orange-red powder with maximum absorption at 407 nm, and its degree of polymerization was found to be 4–9 by g.p.c. analysis. The 1H n.m.r. and i.r. spectral data indicated that 1P predominantly has an all-trans structure in its triene unit. The correlation between the u.v.-vis. absorption maximum and the conjugation length of 1P was investigated, and the photochemical reactivity of 1P was studied by means of u.v.-vis. absorption spectroscopy. The d.s.c. thermogram of 1P showed an exothermic peak at 118°C, which was assignable to crystallization. A pellet of 1P could be doped with iodine and its maximum electrical conductivity was 0.50 S cm−1.