Studies on the electrical properties of P2VP·nI2 complexes

✍ Scribed by Huei-Mei Tsai; Hsien-Wen Ko

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 291 KB
• Volume: 26
• Category: Article
• ISSN: 0378-7753
• DOI: 10.1016/0378-7753(89)80178-8

✦ Synopsis

The electrical conductivities of iodine complexes of poly( 2-vinylpyridine) (P2-VP* &, n = 1 -8) of different molecular weight PB-VP (M.W. 5 X 104, 3 X 105) were obtained in the temperature range -45 "C to 50 "C. An Arrhenius type exponential relationship, u = u. exp(--E/kT) was found for it = 3 -8. The PB-VP. nIz complexes prepared from the lower molecular weight P2-VP (M.W. 5 X 104) showed a sudden change in conductance around -10 "C, whereas no such transition was observed in the experimental temperature range for the higher molecular weight P2-VP (M.W. 3 X 10'). In NMR studies, no chemical shift was observed on the aromatic hydrogen positions. This indicates that bonding between nitrogen and iodine is insufficiently strong to affect the chemical environment.