Synthesis,characterization and electrical properties of dihalogenated polyanilines |
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| Affiliation: | 1. Faculty of Chemistry, Catholic University of Chile, PO Box 306, Santiago 22, Chile;2. Laboratoire de Physique des Matériaux pour l''Electronique, Faculté des Sciences et des Techniques de Nantes, 2 rue de la Houssinière, F-44072 Nantes, Cedex 02, France;1. Department of Chemistry, University of Education, Attock Campus, Attock, Pakistan;2. Department of Physics, National Excellence Institute (University), Islamabad 04524, Pakistan;3. Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan;4. Department of English, Faculty of Languages and Translation, King Khalid University, Abha, Saudi Arabia;5. Department of Mathematics and Physics, University of Campania “Luigi Vanvitelli”, 81100 Caserta, Italy;6. Public Health Department, College of Health Science, Saudi Electronic University, Riyadh 11673, Saudi Arabia;7. Department of Chemistry, Rawalpindi Women University, Rawalpindi, Islamabad, Pakistan;8. Department of Physics, COMSATS University Islamabad (CUI) Lahore Campus, Lahore 54000, Pakistan;9. Department of Physics, Superior University Sargodha Campus, 41100, Pakistan;1. Department of Chemistry, R.B. College, Dalsingsarai (A Constituent Unit of Lalit Narayan Mithila University, Darbhanga), Samastipur 848114, Bihar, India;2. Department of Chemistry, L.N.T. College, B. R. A. Bihar University, Muzaffarpur 842002, Bihar, India |
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| Abstract: | Poly(2.5-dichloroaniline), poly(2,3-dichloroaniline), poly(3,5-dichloroaniline), poly(2,5-dibromoaniline) and poly(2,6-dibromoaniline) have been synthesized from dihaloanilines in protic and aprotic media with different oxidizing agents, such as copper perchlorate, potassium dichromate and potassium permanganate. Each polymer is characterized by elemental analysis, IR and UV-Vis spectroscopy, scanning electron microscopy (SEM) and conductivity measurements. To obtain the doped polymers, they are treated with inorganic acids and then their electric properties determined. The use of different oxidants allows the obtention of polymers with different redox states which, in some cases, present semiconducting properties and are soluble in methanol and acetone. For the sake of comparison of the electrical and structural properties of the new polymers, polyaniline (PANI) has also been synthesized in a manner analogous to the poly(dihaloanilines). |
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