Poly phenylene sulfide phenyleneamine

Poly(aniline) (PANI) is an electric conducting polymer and is used in organic semiconductor technology. The copolymers are of interest, be- 

In the same way, poly(phenylene sulfide-phenyleneamine-phenylene-amine) (PPSAA) has been synthesized via a soluble precursor polymer through an acid-induced polycondensation reaction of A-(4-methylsulfin-yl)phenylene-A -phenyl-hd-phenylenediamine. The polymerization is performed by treating the monomer with methanesulfonic acid for 24 h at room temperature. The demethylation is performed in refluxing pyridine. Precipitation in methanol yields the PPSAA as a light purple solid in 91% yield. 

Experiments with model compounds for PPSAA revealed that the nature of the acid is important for success. Methanesulfonic acid is a good choice. If stronger acids, such as perchloric acid or trifluoromethanesulf-onic acid are used, the yield is drastically reduced. 

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Poly(phenylene sulfide-phenyleneamine-phenyleneamine) (PPSAA), 23 709 Poly(phenylene sulfide) (PPS), 10 201-202 23 639, 702, 704 highly sulfonated, 23 719-720 high molecular weight, 23 714 linear perfluorinated, 23 706 powder coatings, 7 41 Poly(phenylene sulfide) composites, 26 764... 

In the past, little work has been directed to the synthesis of new conjugated polymers, since the activities of the chemists have been concentrated on improving the synthetic accessability of already known conjugated polymers and on establishing structure-property relationships. Remarkable exceptions to this general statement are poly(phenylene sulfide-phenyleneamine) (PPSA) 139 and poly(phenylene sulfide-phenyleneamine-phenyleneamine) (PPSAA) 140 recently synthesized by Mullen et al. (see chart 21) [198]. The polymers represent two... 

Leuninger J, Uebe J, Salbeck J, Gherghel L, Wang C, Mullen K. Poly (phenylene sulfide-phenyleneamine-phenyleneamine) (PPSAA)-a soluble model for polyaniline. Synth Met 1999 100(l) 79-88. 

Aromatic copolymers bearing the sulfide linkage and the amine linkage in the backbone have been synthesized, i.e., poly(l,4-phenylene sulfide-1,4-phenyleneamine) (PPSA). The reaction is sketched in Figure 5.6. 

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