Conductivity of aqueous solutions of fullerol synthesized by direct oxidation

Letenko, D. G.; Никитин, В. А.; Semenov, Konstantin N.; Чарыков, Н. А.; Ivanov, A. S.

doi:10.1134/s003602441212014x

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…Fullerols improve have been proposed for performing bio-oxidations [29,30]. They have been tested as agents for Parkinson's disease (PD) prevention and therapy [31,32], and as active compounds in the preparation of skin rejuvenation cosmetic formulations [33], just to name a few of the many fields of science and technology [34][35][36][37] where C 60 (OH) n have been considered.…”

Section: Introductionmentioning

confidence: 99%

Controlled deposition of fullerene derivatives within a graphene template by means of a modified Langmuir-Schaefer method

Kouloumpis

Vourdas²,

Zygouri

et al. 2018

Journal of Colloid and Interface Science

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The scientific and technological potential of graphene's includes the development of light, open 3D hybrid structures with high surface area, tunable pore size and aromatic functionalities. Towards this aim, we describe a scalable and low-cost bottom-up approach that combines self-assembly and Langmuir-Schaefer deposition for the production of fullerene-intercalated graphene oxide hybrids. This method uses graphene oxide (GO) nanosheets as template for the attachment of two types of fullerene derivatives (bromo-fullerenes, CBr and fullerols, C(OH)) in a bi-dimensional arrangement, allowing a layer-by-layer growth with control at nanoscale. Our film preparation approach relies on a bottom-up process that includes the formation of a hybrid organo-graphene Langmuir film, which is transferred onto a substrate and then brought in contact with C(OH) molecules in solution to induce self-assembly. In the case of grafting CBr molecules into graphene a further modification of the GO platelets was performed by bringing the surface of the transferred GO Langmuir film in contact with a second amino surfactant solution. Repeating these deposition cycles, pillared structures were fabricated in thin films form. These fullerene-based hybrid thin films were characterized by Raman and X-ray photoelectron (XPS) spectroscopies, X-ray diffraction (XRD), Atomic Force Microscopy (AFM) and contact angle measurements.

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Section: Introductionmentioning

confidence: 99%

Controlled deposition of fullerene derivatives within a graphene template by means of a modified Langmuir-Schaefer method

Kouloumpis

Vourdas²,

Zygouri

et al. 2018

Journal of Colloid and Interface Science

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“…It is known that in order to change the electrochemical and optical properties of materials, the incorporation of various elements with the necessary properties into their surface layer is widely used, which makes it possible to obtain materials superior in functional properties to existing analogues. One promising dispersion material of various composite coatings is fullerene C60 [12,13]. Fullerene molecules have a closed π-shell in the presence of multiple bonds.…”

Section: Resultsmentioning

confidence: 99%

Surface Modification of Nickel Oxide (II) Thin Films Obtained by Gas-Phase Deposition

Strekalovskaya

Ludmila

Kondrateva

et al. 2023

KEM

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The technology of producing stable electrochromic anode nanocomposite thin film coatings based on nickel oxide (II) has been developed, which are used as active layers for modulating light flux in the manufacture of various technical devices. The method involves introduction of carbon nanoparticles (carbon-containing particles) into outer layers of nickel oxide (II) thin films obtained by gas-phase deposition under conditions of cathodic polarization in potentiostatic mode in aqueous media containing water-soluble hydroxylated fullerene derivatives - fullerenol С60(ОН)24, without change of their optical density in the initial state. The technology of the method realization allows to effectively change electrochromic properties of nickel oxide (II) thin films and to obtain a nanocomposite, which is a matrix of a thin layer of nickel oxide (II), doped with carbon nanoparticles, with increased contrast and having the ability to maintain a colored state after switching off polarization under open chain conditions for a long time without energy consumption in solution and in air, i.e., characterized by an “optical memory effect”.

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“…One of the promising dispersion materials for various compositional coatings is carbon or its modifications (fullerene, graphene, graphene oxide). [30][31][32][33][34][35][36][37] Previously, a technology was developed to produce a nanocomposite, which consists of a thin layer of nickel(II)-oxide matrix doped with carbon nanoparticles NiO─C, using cathodic deposition from alkaline solutions containing a water-soluble form of fullerene derivatives (C 60 )-polyhydroxylated fullerene, obtained by direct heterogeneous catalytic oxidation-"fullerenol-d", corresponding to the empirical formula C 60 (OH) 24 . [10] Under cathodic polarization in potentiostatic or potentiodynamic modes, fullerenol ions of the type [C 60 (OH) 23 ] þ are capable of accepting electrons, forming carbon and carbon-containing nanoparticles, which can be embedded into the film matrix leading to the formation of NiO─C carbon-containing nanocomposite coatings.…”

Section: 28 Ev O 1smentioning

confidence: 99%

Electrochromic Thin‐Film Nickel‐Oxide Coatings for Systems with Adjustable Light Transmission

Strekalovskaya,

Baturova,

Kondrateva

et al. 2024

Physica Status Solidi (a)

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In this study, results on the effect of technological parameters of the nickel(II)‐oxide thin‐film deposition process, obtained through chemical vapor deposition in an argon–oxygen environment using bis‐(ethylcyclopentadienyl)‐nickel (EtCp)2Ni, on their electrochromic properties, are presented. It is shown that the films lose ability to electrochromic coloring in alkaline environments as their thickness increases up to 170 nm. The introduction of small ozone additions of 0.1 vol% O3 into the gas phase leads to a decrease in the NiO films deposition rate, the formation of a rougher layer with an average grain size up to 71.4 nm, capable of coloring in light brown. Additional cathodic treatment of NiO films at a potential of −0.8 V for 30 s in alkaline environments containing fullerene C60(OH)24 leads to the modification of the surface layer and the formation of NiO–C carbon‐containing nanocomposite coatings with enhanced contrast and the ability to retain the colored state after polarization is turned off, i.e., possessing optical memory properties. Using NiO–C nanocomposite and indium–tin–oxide films, which have opposite coloring mechanisms, in the structure of an electrochromic device allows for an increase in the grade of glass darkening, significantly reducing energy consumption, improving operational characteristics, and life span.

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Conductivity of aqueous solutions of fullerol synthesized by direct oxidation

Cited by 4 publications

References 9 publications

Controlled deposition of fullerene derivatives within a graphene template by means of a modified Langmuir-Schaefer method

Controlled deposition of fullerene derivatives within a graphene template by means of a modified Langmuir-Schaefer method

Surface Modification of Nickel Oxide (II) Thin Films Obtained by Gas-Phase Deposition

Electrochromic Thin‐Film Nickel‐Oxide Coatings for Systems with Adjustable Light Transmission

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