Properties and Application of Nanoporous Silica Filled with Polyaniline and Iodine
| Authors | Tomasz Popławski1, Anna Pidluzhna2 , Fedir Ivashchyshyn1,2 , Piotr Chabecki1 , Roman Shvets2 |
| Affiliations |
1Czestochowa University of Technology, Faculty of Electrical Engineering, 17, Al. Armii Krajowej, 42200 Częstochowa, Poland 2Lviv Polytechnic National University, 12, Bandera St., 79013 Lviv, Ukraine |
| Е-mail | vashchyshyn@gmail.com |
| Issue | Volume 11, Year 2019, Number 6 |
| Dates | Received 09 September 2019; revised manuscript received 06 December 2019; published online 13 December 2019 |
| Citation | Tomasz Popławski, Anna Pidluzhna, Fedir Ivashchyshyn, et al., J. Nano- Electron. Phys. 11 No 6, 06023 (2019) |
| DOI | https://doi.org/10.21272/jnep.11(6).06023 |
| PACS Number(s) | 81.05.Rm |
| Keywords | Nanoporous matrix MCM-41, Host-guest structures, Polyaniline (3) , Impedance spectroscopy (4) , Dielectric permittivity, Loss tangent, Thermostimulated depolarization. |
| Annotation |
Properties of substances in a nanometric scale and combined in complex hyierarchical structures differ drastically and have become of great interest during the last decade. The most promising hyierarchical materials were obtained on the basis of MCM-41 matrix, and class of MCM41 filled with organic substances is one of them. Therefore the molecular-lattice nanoporous regular structure based on silica matrix МСМ-41 fulfilled with polyaniline (PAN) and its iodine dopant was synthesised within this work, and its electrical properties were investigated for the first time to our knowledge. The hybrid structure was obtained with use of encapsulation method and radical oxidation polymerization “in-situ” technique. The impedance characteristics of as obtained porous silica matrix MCM-41 intercalated with PAN and iodine doped PAN were investigated. The effect of photoinduced negative capacity was observed for nanohybrid МСМ-41. Iodine doping of guest component results in the appearance of colossal magneto- and photo-resistive effects. The character of changes in frequency dispersion of impedance, loss tangent and permittivity with lighting and in magnetic field was determined. The thermostimulated depolarization data demonstrate the differences in impurity spectra caused by different guest content in MCM-41 matrix. Parameters, at which synthesized nanohybrids are interesting as materials for quantum accumulators of electric energy and capacitive sensing heads for magnetic carrier, were determined. |
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List of References |
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