X-ray photoelectron spectroscopy of iodine-doped polyethynylferrocene |
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| Affiliation: | 1. Departamento de Química Analítica, Facultad de Farmacia, Universidad Complutense, Pz. Ramón y Cajal s/n, 28040 Madrid, Spain;2. Departamento de Estadística e Investigación Operativa, Facultad de Farmacia, Universidad Complutense, Pz. Ramón y Cajal s/n, 28040 Madrid, Spain;3. Departamento de Química Física y Analítica, Universidad de Oviedo, c/ Julián Clavería 8, 33006 Oviedo, Spain;1. Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450008, PR China;2. School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China;1. Ankara University, Faculty of Science, Department of Chemistry, Ankara 06100, Turkey;2. Dumlupınar University, Faculty of Science and Arts, Department of Chemistry, Kütahya 43100, Turkey;1. Department of Mechanical and Electrical Engineering, Central South University of Forestry and Technology, Changsha, 410004, China;2. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, 410082, China;3. Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada |
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| Abstract: | Iodine-doped polyethynylferrocene, prepared from a solution of iodine in tetrahydrofuran, has been studied by X-ray photoelectron spectroscopy. We find that in the range of doping contents in which the electrical conductivity shows a maximum, iodine is distributed homogeneously in the bulk and in the surface region. These measurements, together with the data from the literature, are indicative of the presence of iodine as a relatively stable I5− possibly in equilibrium with I2 and I3−. Iron in the Fe3+ form is formed upon doping and increases in content as the iodine content increases. |
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