The Study of Optical Energy Gap, Refractive Index, and Dielectric Constant of Pure and Doped Polyaniline with HCl and H2SO4 Acids

Amera G. Baker

Abstract


Polyaniline (PANI) salt in its pure and doped forms find extensive applications in making devices such as polymer light emitting diodes, photovoltaic, sensors, batteries, and super capacitors. PANI salt has been synthesized successfully through chemically oxidative polymerization of aniline in the presence of hydrochloric acid (HCl) and sulfuric acid (H2 SO4 ) using ammonium peroxydisulfate as an oxidizing agent. The absorption spectra of pure PANI salt and its doped state, in HCl and H2 SO4 media, have been studied in the wavelength range from 200 to 1100 nm using ultraviolet and visible near infrared spectrophotometer. Tauc’s formula, Lambert-Beer’s relation, and Fresnel’s formula were employed in the MATLAB program to calculate the optical energy gap, refractive index, and dielectric constant. Results showed that doping with HCl and H2 SO4 acidic mediums caused a reduction in the direct energy gap of the pure PANI from 2.69eV to 2.42 eV and 2.54 eV, respectively. The reduction in optical energy gap is associated with the increase in refractive index. The refractive index (2.92) has a higher value of PANI doped with HCl. Higher refractive index values are for better-structured films.

Keywords


Hydrochloric acid; Optical constants; Polyaniline; Sulfuric acid; Ultraviolet and visible spectroscopy

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Abdulla, H.S., and Abbo, A.I., 2012. Optical and electrical properties of thin films of polyaniline and polypyrrole. International. Journal of Electrochemical Science, 7, pp.10666-10678.

Ahmed, N.M., Sauli, Z., Hashim, U., and Al-Douri, Y., 2009. Investigation of the absorption coefficient, refractive index, energy band gap and film thickness for Al0. 11Ga0. 89N, Al0. 03Ga0. International Journal of Nanoelectronics and Materials, 2, pp.189-195.

Al-Daghman, A.N.J., Ibrahim, K., Ahmed, N.M., and Al-Messiere, M.A., 2016. Effect of doping by stronger ions salt on the microstructure of conductive polyaniline-ES: Structure and properties. Journal of Optoelectronics and Biomedical Materials, 8(4), pp.175-183.

Ali, Z.R., Zeadan, A.M., and Ziadan, K.M., 2008. The optical properties of polyaniline blend with poly-methal-methacrylate as conducting polymers alloys (PAni/PMMA). Basrah Journal of Science, 26(1), pp.12-17.

Al-Tememee, N.A., Saeed, N.M., Al-Dujayli, S.M., and Chiad, B.T., 2012. The effect of zn concentration on the optical properties of Cd10–xZnxS films for solar cells applications. Advances in Materials Physics and Chemistry, 2(2), p.69.

Aqili, A.K., Ali, Z., and Maqsood, A., 2000. Optical and structural properties of two-sourced evaporated ZnTe thin films. Applied Surface Science, 167(1-2), pp.1-11.

Aziz, S.B., Rasheed, M.A., and Ahmed, H.M., 2017. Synthesis of polymer nanocomposites based on [Methyl cellulose](1−x): (CuS) x (0.02 M≤ x≤ 0.08 M) with desired optical band gaps. Polymers, 9(6), p.194.

Bharti, M., Singh, A., Samanta, S., and Aswal, D.K., 2018. Conductive polymers for thermoelectric power generation. Progress in Materials Science, 93, pp.270-310.

Chaqmaqchee, F.A.I., and Baker, A.G., 2015. Study and characterization of polyaniline at various doping of LiCl wt.% using electrical measurements and XRF analysis. Journal of Research Updates in Polymer Science, 4(4), p.188.

Dai, H., Wang, N., Wang, D., Ma, H., and Lin, M., 2016. An electrochemical sensor based on phytic acid functionalized polypyrrole/graphene oxide nanocomposites for simultaneous determination of Cd (II) and Pb (II). Chemical Engineering Journal, 299, pp.150-155.

Du, X., Zhang, Z., Liu, W., and Deng, Y., 2017. Nanocellulose-based conductive materials and their emerging applications in energy devices a review. Nano Energy, 35, pp.299-320.

Faramarzpour, N., Deen, M.J., Shirani, S. and Fang, Q., 2008. Fully integrated single photon avalanche diode detector in standard CMOS 0.18-$mu $ m Technology. IEEE Transactions on Electron Devices, 55(3), pp.760-767.

Gazdic, I., Modric-Šahbazovic, A., and Sulejmanovic, S., 2016. Analysis of specific electric conductivity of thin films of polyaniline doped with sulfuric and hydrochloric acid. TEM Journal, 5(1), p.38.

Gizzie, E.A., Niezgoda, J.S., Robinson, M.T., Harris, A.G., Jennings, G.K., Rosenthal, S.J., and Cliffel, D.E., 2015. Photosystem I-polyaniline/TiO 2 solidstate solar cells: Simple devices for biohybrid solar energy conversion. Energy and Environmental Science, 8(12), pp.3572-3576.

Gong, J., Cui, X.J., Xie, Z.W., Wang, S.G., and Qu, L.Y., 2002. The solidstate synthesis of polyaniline/H4SiW12O40 materials. Synthetic Metals, 129(2), pp.187-192.

Gupta, K., Jana, P.C., and Meikap, A.K., 2010. Optical and electrical transport properties of polyaniline silver nanocomposite. Synthetic Metals, 160(13-14), pp.1566-1573.

Hassan, S., Ghareeb, B.A., and Jafaar, H.I., 2012. AC electrical condutivity for polyaniline prepared in different acidic medium. International Journal of Basic and Applied Science, 1, pp.352-362.

Hassan, S.M., 2013. Optical properties of prepared polyaniline and

polymethylmethacrylate blends. International Journal of Application or Innovation in Engineering and Management, 2(9), pp.232-235.

Kenry and Liu, B., 2018. Recent advances in biodegradable conducting polymers and their biomedical applications. Biomacromolecules, 19(6), pp.1783-1803.

Kulkarni, M.V., Viswanath, A.K., Marimuthu, R., and Seth, T., 2004. Synthesis and characterization of polyaniline doped with organic acids. Journal of Polymer Science Part A: Polymer Chemistry, 42(8), pp.2043-2049.

Ladera, R.M., Fierro, J.L.G., Ojeda, M., and Rojas, S., 2014. TiO2-supported heteropoly acids for low-temperature synthesis of dimethyl ether from methanol. Journal of Catalysis, 312, pp.195-203.

Liao, G., Li, Q., and Xu, Z., 2019. The chemical modification of polyaniline with enhanced properties: A review. Progress in Organic Coatings, 126, pp.35-43.

Liao, G., Li, Q., Zhao, W., Pang, Q., Gao, H., and Xu, Z., 2018. In situ construction of novel silver nanoparticle decorated polymeric spheres as highly active and stable catalysts for reduction of methylene blue dye. Applied Catalysis A: General, 549, pp.102-111.

Lu, X., Zhang, W., Wang, C., Wen, T.C., and Wei, Y., 2011. One-dimensional conducting polymer nanocomposites: Synthesis, properties and applications. Progress in Polymer Science, 36(5), pp.671-712.

Ma, Z., and Kan, J., 2013. Study of cylindrical Zn/PANI secondary batteries with the electrolyte containing alkylimidazolium ionic liquid. Synthetic Metals, 174, pp.58-62.

Manual, I., 1994. Shimadzu Corporation. Analytical Instrument Plant, Kyoto, Japan.

Mathai, C.J., Saravanan, S., Anantharaman, M.R., Venkitachalam, S., and Jayalekshmi, S., 2002. Effect of iodine doping on the bandgap of plasma polymerized aniline thin films. Journal of Physics D: Applied Physics, 35(17), p.2206.

Melad, O., and Jarur, M., 2016. Studies on the effect of doping agent on the structure of polyaniline. Chemistry and Chemical Technology, 10(1), pp.41-44.

Muhammad, F.F., and Sulaiman, K., 2011. Utilizing a simple and reliable method to investigate the optical functions of small molecular organic films Alq3 and Gaq3 as examples. Measurement, 44(8), pp.1468-1474.

Muhammad, F.F., Hapip, A.I.A., and Sulaiman, K., 2010. Study of optoelectronic energy bands and molecular energy levels of tris (8-hydroxyquinolinate) gallium and aluminum organometallic materials from their spectroscopic and electrochemical analysis. Journal of Organometallic Chemistry, 695(23), pp.2526-2531.

Muhammad, F.F., Yahya, M.Y., Aziz, F., Rasheed, M.A., and Sulaiman, K., 2017. Tuning the extinction coefficient, refractive index, dielectric constant and optical conductivity of Gaq3 films for the application of OLED displays technology.Journal of Materials Science: Materials in Electronics, 28(19), pp.14777-14786.

Ninh, D.H., Thao, T.T., Long, P.D. and Dinh, N.N., 2016. Characterization of electrochromic properties of polyaniline thin films electropolymerized in H2 SO4 Solution. Open Journal of Organic Polymer Materials, 6(01), pp.30.

Nahida, J.H., and Marwa, R.F., 2011. Study of the optical constants of the PMMA/PC blends. AIP Conference Proceedings, 1400(1), pp.585-595.

Olinga, T.E., Fraysse, J., Travers, J.P., Dufresne, A., and Pron, A., 2000. Highly conducting and solution-processable polyaniline obtained via protonation with a new sulfonic acid containing plasticizing functional groups. Macromolecules, 33(6), pp.2107-2113.

Robert, M.S., Francis, X.W., and David, J.K., 2005. Spectrometric Identification of Organic Compounds. 7th ed. John Wiley and Sons, Inc., Hoboken, p.106.

Schymanski, E.L., Jeon, J., Gulde, R., Fenner, K., Ruff, M., Singer, H.P., and Hollender, J., 2014. Identifying small molecules via high resolution mass spectrometry: Communicating confidence. Environmental Science and Technology, 48(4), pp.2097-2098.

Stejskal, J., and Polyaniline, G.R.G., 2002. Preparation of a conducting polymer (IUPAC technical report). Pure and Applied Chemistry, 74(5), pp.857-867.

Varma, S.J., Xavier, F., Varghese, S., and Jayalekshmi, S., 2012. Synthesis and studies of exceptionally crystalline polyaniline thin films. Polymer International, 61(5), pp.743-748.

Xu, R.P., Li, Y.Q., and Tang, J.X., 2016. Recent advances in flexible organic light-emitting diodes. Journal of Materials Chemistry C, 4(39), pp.9116-9142.

Yin, W., and Ruckenstein, E., 2000. Soluble polyaniline co-doped with dodecyl benzene sulfonic acid and hydrochloric acid. Synthetic Metals, 108(1), pp.39-46.

Zeadan, K.M., Talab, R.A., and Satar, J., 2009. The optical properties of polyaniline (PAni) prepared by chemical method. Journal of Kufa Physics, 1(2), pp.1-11.

Zhang, Z., Wei, Z., and Wan, M., 2002. Nanostructures of polyaniline doped with inorganic acids. Macromolecules, 35(15), pp.5937-5942.




DOI: http://dx.doi.org/10.14500/aro.10483
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