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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/41136
- 'I2-doping' of 1,4-polydienes
- Dai, Liming; Mau, Albert W. H.; Griesser, Hans J.; Winkler, David A.; Spurling, Thomas H.; Hong, Xiaoyin; Yang, Yongyuan; White, John W.
- The discovery, in 1988, that 'iodine-doped' rubber can conduct electricity attracted a great deal of interest [1,2]. However, it also generated some fundamental questions : First, what is the mechanism from which the conductivity of 'I2-doped' rubbers arises? Second, why does cis-1,4-polybutadiene not become electrically conductive by 'I2-doping', but its trans-counterpart does? Third, what is the effect of 'I2-doping' and conductivity in the rubber component on rubber-containing conducting composites and/or copolymers? We have previously demonstrated that 'I2-doping' of cis-1,4-polyisoprene produces conjugated sequences of unsaturated double bonds in the polymer backbone, which confer conductivity. Recently, we have found that 'I2-doping' of cis-1,4-polybutadiene, unlike the trans-isomer, does not lead to the formation of conjugated sequences at room temperature - a finding which leads to the formation of conducting patterns through patterned photoisomerization of cis-1,4-polybutadiene films followed by 'I2-doping'. We have also observed, for the first time, the occurrence of 'I2-doping' of the polyisoprene component in polyisoprene-polyacetylene copolymers.
- Publication type
- Journal article
- Synthetic Metals, Vol. 69, issues 1-3: Proceedings of the International Conference on Science and Technology of Synthetic Metals (ICSM'94), Seoul, South Korea, 24-29 July 1994, pp. 563-566
- Publication year
- Calculations; Computer simulation; Copolymers; Doping (additives); Elastomers; Iodine; Isomerisation; Molecular dynamics; Molecular orbital calculations; Photoisomerisation; Polyacetylenes; Polybutadienes; Polydienes; Polyisoprenes; Rubber; Rubber containing materials; Trans isomer; Unsaturated double bonds
- Elsevier Science
- Publisher URL
- Copyright © 1995 Published by Elsevier Science B.V.
- Peer reviewed