Chemistry Letters, Vol.34, No.5, 724-725, 2005
Preparation and properties of conjugated polymers containing 1,2-diaryl-3,4-bis[(2,4,6-tri-t-butylphenyl)phosphinidene]cyclobutene units
Conjugated polymers containing sterically protected 1,2-di(2-thienyl)-3,4-diphosphinidenecyclobutene units were prepared and their properties were investigated. Red shifts of the polymers were observed, compared to the corresponding monomeric species, which indicates extension of the pi system on polymerization.