Poly-p-phenylene, preparation

Polyacetylene has good inert atmospheric thermal stability but oxidizes easily in the presence of air. The doped samples are even more susceptible to air. Polyacetylene films have a lustrous, silvery appearance and some flexibility. Other polymers have been found to be conductive. These include poly(p-phenylene) prepared by the Freidel-Crafts polymerization of benzene, polythiophene and derivatives, PPV, polypyrrole, and polyaniline. The first polymers commercialized as conductive polymers were polypyrrole and polythiophene because of their greater stability to air and the ability to directly produce these polymers in a doped form. While their conductivities (often on the order of 10" S/m) are lower than that of polyacetylene, this is sufficient for many applications. 

Refs. [i] Lacaze PC, Aeiyach S, Lacroix JC (1997) Poly(p-phenylenes) preparation techniques and properties. In Nalwa HS (ed) Handbook of organic conductive molecules and polymers. Wiley, Chichester [ii] Kvarnstrom C, Ivaska A (1997) Characterization and applications ofpoly(p-phenylene) and poly (p-phenylene vinylene). In Nalwa HS (ed) Handbook of organic conductive molecules and polymers. Wiley, Chichester... 

Figure 16.39. Effect of AsFj doping and air exposure on the ESR spectrum of poly(p-phenylene) prepared by Yamamoto method. Adapted from J. Phys.D Appl. Phys. 28, I (1995), with permission of lOP Publishing Ltd.

STRUCTURAL INVESTIGATION AND ELECTRICAL PROPERTIES OF POLY(P-PHENYLENE) PREPARED IN TWO DIFFERENT WAYS... 

Lere-Porte, J. R, Radi, M., Chorro, C., Petrissans, )., Sauvajol, J. L., Gonbeau, D., Pfister-Guillouzo, G., Louarn, G., and Lefrant, S. (1993). Characterization from XPS, FT-IR and Raman spectroscopies of films of poly(p-phenylene) prepared by electropolymerization of benzene dissolved in ketyl pyridinium chloride-AICl3 melting salt. Synth. Met, 59, pp. 141-149. 

Item 317 Synthetic Metals 59,No.2, July 1993, p.141-9 CHARACTERISATION FROM XPS, FTIR AND RAMAN SPECTROSCOPIES OF FILMS OF POLY-P-PHENYLENE PREPARED BY ELECTROPOLYMERISATION OF BENZENE DISSOLVED IN KETYL PYRIDBVIUM CHLORIDE-ALUMINnJM TRICHLORIDE MELTING SALT... 

Zhou W, Wang C, Xu J, Du Y, Yang P (2010) Enhanced electrocatalytic performance for isopropanol oxidation on Pd-Au nanoparticles dispersed on poly(p-phenylene) prepared from biphenyl. Mater Chem Phys 123 390-395... 

Poly(p-phenylenes) Preparation Techniques and Properties P. C. Lacaze, S. Aeiyach and J. C. Lacroix... 

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