Physical properties of polyazomethine thin films doped with iodine

• Autorzy: Hajduk B. , Weszka J. , Jarząbek B. , Jurusik J. , Domański M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of this paper is to show influence of doping 1,4-phenylene-methylenenitrilo-1,4- phenylenenitrilomethylene (PPI) with iodine and to propose doping mechanism and its impact on electronic structure of doped PPI thin films. Design/methodology/approach: Influence of iodine doping on electronic structure of polyazomethine thin films was investigated. Optical absorption spectra, XRD spectra and AFM images of doped PPI thin films were recorded. Findings: Doping mechanism relys on removing one electron from PPI pi-system by 12 molecules and forming counterions 13-. Formation of positive polaron means that doping of polyazomethine PPI is p - type. Research limitations/implications: Influence of iodine doping on electrical properties (with increasing of temperature) of PPI thin layers will be checking with Kethley appliance. We plan these measurements to be done in the foreseeable future. Practical implications: Iodine doping of thin PPI films process could results in better electrical conductivity of PPI, so doped polyazomethine films could find some applications for photonic and optoelectronic devices. Originality/value: Conjugated PPI is rarely enough reported but it is very interesting material as it has nitrogen atom in the backbone and it is isoelectronic counterpart of polyparaphenylenevinylene (PPV). This paper show that doping influences on surface morphology, cristallinity and optical properties of polymer. Furthermore, doping mechanism and changes of polymer electronic structure have been proposed in this paper.

Słowa kluczowe

EN

engineering polymer; Polyazomethine PPI; UV-Vis absorption spectroscopy; electronic structure

PL

polimery; polimery konstrukcyjne; poliazometina PPI; spektroskopia UV-VIS; struktura elektronowa

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 24, nr 2
• Strony: 67--70
• Opis fizyczny: Bibliogr. 16 poz., fot., rys.

Twórcy

autor

Hajduk B.

autor

Weszka J.

autor

Jarząbek B.

autor

Jurusik J.

autor

Domański M.

• Division of Materials Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18 a, 44-100 Gliwice, Poland,

Bibliografia

• [1] A. Kubono, N. Okui, Polymer thin films prepared by vapour deposition, Progress Polymer Science 19 (1994) 389-438.
• [2] C.Y. Yang, S.A. Janekhe, Conjugated Aromatic Polyimines 2 Synthesis, Structure, and Properties of New Aromatic Polyazomethines, Macromolecules 28 (1995) 1180.
• [3] K. Tada, M. Onoda, Electrophoeric deposition through colloidal suspension: A way to obtain nanostructured conjugated polymer film, Synthetic Metals 152 (2005) 341-344.
• [4] F. Rohlfing, D.D.C. Bradley, Non linear Starc effect in polyazomethine and poly (p-phenylene-vinylene); The interconnections of chemical and electronic structure, Chemical Physics 227 1998, 133-151.
• [5] M.S. Weaver, D.D.C. Bradley, Organic electroluminescence devices fabricated with chemical vapour deposited polyazomethine films, Synthetic Metals 83 (1996) 61-66.
• [6] J. Mc Elvain, S. Tatsuura, F. Wudl, A.J. Heeger, Linear and nonlinear optical spectra of polyazomethines fabricated by chemical vapour deposition, Synthetic Metals 95 (1998) 101-105.
• [7] S. Kokane, M.P. Patankar, K.L. Narasimhan, N. Periasamy, Modified CVD deposition of poly(p-phenylene vinylene), Synthetic Metals 132 (2003) 235-238.
• [8] B. Jarząbek, J. Weszka, M. Domański, J. Cisowski, Optical properties of amorphous polyazomethine thin films, Journal of Non-Crystalline Solids 352 (2006) 1660-1662.
• [9] W. Łużny, E. Stochmal-Pomarzańska, A. Proń, Structural properties of selected poly(azomethines), Polymer 40 (1999) 6611-6614.
• [10] L.M.H. Groenewoud, G.H.M. Engbers, R. White, J. Feijen, On the iodine doping process of plasma polymerised thiophene layers, Synthetic Metals 125 (2002) 429-440.
• [11] T. Stergiopoulos, I. Arabatzis, M. Kalbac, I. Lukes, P. Falaras, Incorporation of innovative compounds in nanostructured photochemical cells, Journal of Materials Processing Technology 161 (2005) 107-112.
• [12] J.Maillo, P. Pages, E. Vallejo, T. Laccorte, J.Gacén, FTIR spectroscopy study of interaction between fibre of polyamide 6 and iodine, European Polymer Journal 41 (2005) 753-759.
• [13] S.F. Chen, Y.K. Fang, S.C. Hou, C.Y. Lin, CS. Lin, W.R. Chang, T.H. Chou, The effect of doping iodine on organic light-emitting diode, Organic Electronics 6 (2005) 92-96.
• [14] L.A. Dobrzański, Engineering materials and materials design. Fundamentals of materials science and physical metallurgy. WNT, Warsaw-Gliwice, 2006 (in Polish).
• [15] J.L. Bredas, G.B. Street, Polarons, Bipolarons, and Solitons in Conducting Polymers, Accounts of Chemical Research 18 (1985) 309-315.
• [16] W.R. Salaneck, R.H. Friend, J.L. Bredas, Electronic structure of conjugated polymers: Consequences of electron – lattice coupling, Physics Reports 319 (1999) 231-251.