Publications on the project |
051 The Deep Impact of the Template on Molecular Weight, Structure and Oxidation State of the Formed Polyaniline |
Authors: | Nikolay A. Ogurtsov, Yuriy V. Noskov, Kateryna Yu. Fatyeyeva, Vladimir G. Ilyin, Galina V. Dudarenko, Alexander A. Pud | |
Summary: | In this work we find that polyaniline (PANI), synthesized by aniline chemical polymerization at a surface of template polycarbonate (PC) particles, is significantly different in molecular weight, structural order, oxidation state, and conductivity from a neat PANI. Molecular weight of the PANI phase in the composite (Mw = 158000) is 1.6 times higher than that of the neat PANI synthesized in the absence of the template particles. Moreover, XRD analysis shows that crystallinity of the PANI phase in the composite is three times higher than that of the neat PANI. Raman spectroscopy indicates that the oxidation level of PANI in the PC/PANI composite is lower than that of the neat PANI. These noticeable changes of the PANI phase properties suggest specific interactions of reagents in the polymerization medium and formed PANI with the template phase as well as an orientation effect of the latter surface. FTIR spectroscopy reveals that hydrogen bonding in the neat doped PANI is weaker than one between –NH– of PANI and C=O of PC at their interface. The discovered differences are supported with the fact that conductivity of the PANI phase in the composite is more than three times higher than that of the neat PANI. | |
Keywords: | Polyaniline; Polycarbonate; Hydrogen bond; Polarons; Crystallinity; Percolation threshold | |
Edition: | The Journal of Physical Chemistry B, 2013, Volume 117, Issue 17, pp 5306-5314 | | | 2013,
,English |
051 Tuning of the charge and energy transfer in ternary CdSe/poly(3-methylthiophene)/poly(3-hexylthiophene) nanocomposite system |
Authors: | Oleg P. Dimitriev, Nikolay A. Ogurtsov, Yanqin Li, Alexander A. Pud, Giuseppe Gigli, Petro S. Smertenko, Yuriy P. Piryatinski, Yuriy V. Noskov, Alexander S. Kutsenko | |
Summary: | Composite CdSe:poly(3-methylthiophene) (P3MT) nanoparticles have been synthesized via polymerization of 3-methylthiophene (3MT) in the presence of CdSe particles of nanorod or dot-like morphology and dispersed in the poly(3-hexylthiophene) (P3HT) matrix. The effect of the P3MT layer to mediate charge and energy transfer between CdSe and P3HT in the ternary nanocomposite system has been studied using electronic absorption, photoluminescence spectroscopy and current-voltage measurements. The energy level diagram of the composite system has been deduced based on optical and electrochemical data of the separate components of the system. The contribution of the low- and high-molecular fractions of P3MT to control the charge transfer in order to optimize the intermediary role of P3MT is analyzed. Particularly, it was shown that excitation of the low-molecular P3MT leads to energy transfer to both CdSe and P3HT components and it also serves as a barrier against recombination of electrons and holes separated at CdSe and P3HT, respectively. Thus, the role of the P3MT interlayer in assisting the charge separation and increasing an open-circuit voltage in the photovoltaic cell based on the ternary system is demonstrated. | |
Keywords: | CdSe nanoparticle; poly(3-methylthiophene); interlayer; hybrid composite nanoparticles; poly(3-hexylthiophene); ternary composite; charge transfer; energy transfer | |
Edition: | Colloid and Polymer Science, 2012, Volume 290, Issue 12, pp 1145-1156 | | | 2012,
,English |
051 Electrochemically assembled planar hybrid poly(3-methylthiophene)/ZnO nanostructured composites |
Authors: | Dmytro Sydorov, Petro Smertenko, Yuri Piryatinski, Tsukasa Yoshida, Alexander Pud | |
Summary: | Step by step electrochemical assembling layers of compact ZnO (ZnOcomp), ZnO nanorods (ZnONR) and poly(3-methylthiophene) (P3MT) has been applied to form the photovoltaically active hybrid organic–inorganic heterostructure. Photoluminescence and photoconductivity characterization of the synthesized ZnOcomp and ZnONR layers display their different defect and doping states resulting in a non-linear I–V behavior of the assembled complex ZnOcomp/ZnONR layer structure for account of formation of a p–n junction at the interface. We find some healing of the defect states at surface of the ZnOcomp layer after its covering with ZnONR layer. The photoelectrochemical deposition of the stable P3MT on surface of the complex ZnOcomp/ZnONR structure is realized under light irradiation with wavelength close to near-band-edge (NBE) emission of ZnO (∼380 nm) when using the special mixed voltammetry–potentiostatic–galvanostatic mode. This mode is found to minimize overoxidation/degradation of the forming P3MT. After the synthesis the formed P3MT layer is electrochemically reduced to move it to a semiconductor state. The resulting hybrid ZnOcomp/ZnONR/P3MT heterostructure is photovoltaically active and displays open-circuit voltage about 0.45 V. | |
Keywords: | Electrochemically synthesized layers ZnO, Photoelectrochemical polymerization, Poly(3-methylthiophene), Hybrid heterostructure with photovoltaic ability | |
Edition: | Electrochimica Acta, 2012, Volume 81, pp 83-89 | | | 2012,
,English |
051 Influence of the nature of the template on the structure and properties of electrodeposited vertically aligned ZnO submicron rods |
Authors: | D.А. Sydorov, S.D. S.D. Mikhaylov, T.I. Motronuk, Y.P. Piryatinski, P.S. Smertenko, V.G. Ilyin, A.A. Pud | |
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Edition: | | | | 2013,
,Russian |
051 Structure and properties of polymer core-shell systems: Helium ion microscopy and electrical conductivity studies |
Authors: | Bliznyuk V., Pud A., Scipioni L., Huynh C., Ogurtsov N., Ferranti D. | |
Summary: | Peculiarities of the structural organization and electrical properties of two core-shell polymer systems under different fabrication protocols have been studied with a combination of helium ion microscopy (HIM) and current-voltage characterization. The systems under study included a submicrometer core of a ferroelectric polymer polyvinylidene fluoride and a shell of intrinsically conducting or semiconducting polymer polyaniline(PANI) or poly(3-methylthiophene) (P3MT). Application of HIM allowed identification of the polymer components, visualization of the electrically conductive percolation network of PANI or P3MT, and its variation due to thermal annealing and/or interaction with the environment. HIM is proved to be a powerful tool for characterization of not only the morphology but also of the charge distribution and conductivity properties on the nanoscale. The specific contrast formation in HIM imaging is due to differences in local electrical conductivity of the components. The authors have demonstrated that the polymer core-shell systems under study can serve as a universal platform for development of nanostructured multifunctional materials. Specifically, it is shown that they can be used for preparation of conducting and semiconducting polymer films or layers having promising nonlinear electrical and sensor properties. | |
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Edition: | Journal of Vacuum Science & Technology B, 2010, Volume 28, Issue 6, P. C6P59-C6P65 | | | 2010,
,English |
051 Ternary magnetic nanocomposites based on core–shell Fe3O4/polyaniline nanoparticles distributed in PVDF matrix |
Authors: | Petrychuk M., Kovalenko V., Pud A., Ogurtsov N., Gubin A. | |
Summary: | Magnetic, electric, and radioprotector properties of hybrid nanocomposites of Fe3O4 nanoparticles with and without a shell of polyaniline (PANI), which is doped with dodecylbenzenesulfonic acid (DBSA), dispersed in polyvinylidene fluoride (PVDF) matrix have been studied. It has been found that the presence of PANI–DBSA as a separate filler in the ternary nanocomposite film, which also contains as another filler the core–shell Fe3O4/PANI–DBSA nanoparticles, facilitates dispersion of the magnetic filler due to the improvement of its compatibility with the PVDF matrix. This leads both to the decrease in coefficient of squareness of the hysteresis loop and to the increase in electromagnetic energy (EME) absorption of the nanocomposite film. | |
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Edition: | Physica Status Solidi A, 2010, Volume 207, Issue 2, P. 442-447 | | | 2010,
,English |
051 Electronic and optical features of N,N´-bis(4-aminophenyl)1,4-quinonenediimine doped with silicotungsten polyacid: Experimental and numerical studies |
Authors: | Ayed T., Erien N., Kassiba A., Ogurtsov N.A., Pud O.A. | |
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Edition: | Chemical Physics Letters, 2010, Volume 497, Issue 1-3, P. 76-80 | | | 2010,
,English |
051 Structure–property relationship in aliphatic polyamide/polyaniline surface layered composites |
Authors: | Fatyeyeva K., Pud A.A., Bardeau J.-F., Tabellout M. | |
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Edition: | Materials Chemistry and Physics, 2011, Volume 130, Issue 1, Р. 760-768 | | | 2011,
,English |
051 Nanostructured polyaniline-based composites for ppb range ammonia sensing |
Authors: | Wojkiewicz J.L., Bliznyuk V.N., Carquigny S., Elkamchi N., Redon N., Lasri T., Pud A.A., Reynaud S. | |
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Edition: | Sensors and Actuators B: Chemical, 2011, Volume 160, Issue 1, Р. 1394-1403. | | | 2011,
,English |
051 Interaction of polyaniline with hydroxyl-ions in N-methylpyrrolidinone |
Authors: | Dimitriev O.P., Pud A.A. | |
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Edition: | Synthetic Metals, 2011, Volume 161, Issue 17, Р. 1813-1819 | | | 2011,
,English |
051 Application of a CdS nanostructured layer in inverted solar cells |
Authors: | Grynko D.O., Fedoryak O.M., Smertenko P.S., Ogurtsov N.A., Pud A.A., Noskov Yu.V., Dimitriev O.P. | |
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Edition: | Journal of Physics D: Applied Physics, 2013, Volume 46, Issue 49, Р. 495114 (8pp) | | | 2013,
,English |
051 Synthesis and Properties of Hybrid Poly (3-Methylthiophene)-CdSe Nanocomposite and Estimation of Its Photovoltaic Ability |
Authors: | Ogurtsov N.A., Pud A.A., Dimitriev O.P., Piryatinski Y.P., Smertenko P.S., Noskov Y.V., Kutsenko A.S. | |
Summary: | We report the synthesis and properties of new hybrid nanocomposites of poly (3-methylthiophene) and CdSe nanoparticles. The synthesis method is based on the chemical oxidative polymerization of 3-methylthiophene in the presence of CdSe nanoparticles of different shapes (quantum dots, nanorods, and tetrapods). In situ, the open circuit potential and the UV-Vis monitoring of a reaction mixture are used to control the polymerization process. The minimal and maximal CdSe concentrations in nanocomposites are obtained for quantum dots and nanorods, respectively. Nanocomposites are investigated, by using IR, electronic absorption, and photoluminescence spectroscopies, TGA, and DTA. Hybrid photovoltaic (PV) cells based on these materials are fabricated and evaluated. The best PV performance is achieved for a device based on nanocomposites with CdSe nanorods. | |
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Edition: | Molecular Crystals and Liquid Crystals, 2011, Volume 536, Issue 1, Р. 33/[265]-40/[272] | | | 2011,
,English |
051 Hybrid solar cells based on CdS nanowire arrays |
Authors: | Grynko D.O., Fedoryak O.M., Smertenko P.S., Ogurtsov N.A., Pud A.A., Noskov Yu.V., Dimitriev O.P. | |
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Edition: | Advanced Materials Research, 2014, Volume 85, P. 75-82 | | | 2014,
,English |
051 Multifunctional Role of Nanostructured CdS Interfacial Layers in Hybrid Solar Cells |
Authors: | Grynko D.O., Fedoryak O.M., Smertenko P.S., Ogurtsov N.A., Pud A.A., Noskov Yu.V., Dimitriev O.P. | |
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Edition: | Journal of Nanoscience and Nanotechnology, 2015, Volume 15, Issue 1, P. 752-758 | | | 2014,
, |
051 A method of photoactivated electrochemical synthesis of the nanostructured composite of poly(3-methylthiophene)/ZnO |
Authors: | Pud O.A., Smertenko P.S., Sidorov D.O. | |
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The events in the framework of the project |
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051 2.2. Chemistry and electrochemistry nanoheterostructures and hybrid nanocomposites Purpose: Expected results:Release of new product: material Stage 1:Дослідження закономірностей хімічного синтезу наношарів електропровідного полімеру на поверхні інертних полімерних часток Stage 2:Вивчення структури, оптичних та електрофізичних властивостей полімер-полімерних нанокомпозитів електропровідного полімеру типу ядро-оболонка Stage 3:Дослідження закономірностей хімічного та електрохімічного синтезу наношарів електропровідного полімеру на наночастках та наноструктурованих шарах бінарних неорганічних напівпровідників Stage 4:Вивчення структури, оптичних та електрофізичних властивостей гібридних нанокомпозитів на основі електропровідного полімеру та наночасток бінарних неорганічних напівпровідників Stage 5:Оптимізація створених на попередніх етапах матеріалів, визначення можливості регулювання параметрів структури нанокомпозитів та встановлення співвідношення їх структури та властивостей
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