A facile approach to fabricating ultrathin layers of reduced graphene oxide on planar solids

Zvyagina, Alexandra I.; Melnikova, Elizaveta K.; Averin, A. A.; Baranchikov, А. Е.; Тамеев, А. Р.; Malov, V. V.; Ezhov, A. A.; Grishanov, Dmitry A.; Gun, Jenny; Ermakova, Elizaveta V.; Arslanov, V. V.; Kalinina, Maria A.

doi:10.1016/j.carbon.2018.03.075

Cited by 20 publications

(9 citation statements)

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“…To assess the electric properties of the as-formed 1D quasi-MOF structures in the deposited films, a measuring electric cell for the four-probe technique was applied. 49 The measured values of the film resistance were used for calculations of the surface conductivity accounted for the inhomogeneity of the film due to the empty space between the nanowires. The AFMdetermined thickness of the surface coating was about 1.1 μm (Figure S9); this value was corrected for the average packing density of 60% estimated from digital AFM images.…”

Section: Resultsmentioning

confidence: 99%

“…To assess the electric properties of the as-formed 1D quasi-MOF structures in the deposited films, a measuring electric cell for the four-probe technique was applied . The measured values of the film resistance were used for calculations of the surface conductivity accounted for the inhomogeneity of the film due to the empty space between the nanowires.…”

Section: Results and Discussionmentioning

confidence: 99%

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Ion-Driven Self-Assembly of Lanthanide Bis-phthalocyaninates into Conductive Quasi-MOF Nanowires: an Approach toward Easily Recyclable Organic Electronics

et al. 2021

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Controlled self-assembly and rapid disintegration of supramolecular nanowires is potentially useful for ecology-friendly organic electronics. Herein, a novel method exploiting the binding between crown-substituted double-decker lanthanide phthalocyaninates (ML2, M = Lu, Ce, Tb) and K+ ions is applied for the one-step fabrication of macroscopically long conductive one-dimensional quasi-metal–organic frameworks. Their properties are controlled by the size of the lanthanide ion guiding the assembly through either intra- or intermolecular interactions. A LuL2 linker with a small interdeck distance yields fully conjugated intermolecular-bonded K+–LuL2 nanowires with a thickness of 10–50 nm, a length of up to 50 μm, and a conductivity of up to 11.4 S cm–1, the highest among them being reported for phthalocyanine assemblies. The large size of CeL2 and TbL2 leads to the formation of mixed intra- and intermolecular K+–ML2 phases with poor electric properties. A field-assisted method is developed to deposit aligned conductive K+–LuL2 assemblies on solids. The solid-supported nanowires can be disintegrated into starting components in a good aprotic solvent for further recycling.

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Section: Resultsmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%

Ion-Driven Self-Assembly of Lanthanide Bis-phthalocyaninates into Conductive Quasi-MOF Nanowires: an Approach toward Easily Recyclable Organic Electronics

et al. 2021

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“…GO hydrosol (рН 5.5 ± 0.1) was synthesized from exfoliated graphite powder by a modi ed Hummers method described in [41]. The n-hexane, chloroform, ethanol, methanol, Ni(NO 3 ) 2 , 10,12-pentacosadiynoic acid (PCDA), fullerene (C 60 ) and 4,4',4'-Tris[2-naphthyl(phenyl)amino] triphenylamine (2-TNATA) were obtained from Sigma-Aldrich.…”

Section: Methodsmentioning

confidence: 99%

A tool-box strategy for layer-by-layer assembly of ultrathin hybrid films from graphene oxide and chromophores for organic electronics

Gusarova

Zvyagina

Aleksandrov

et al. 2022

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A combinatorial interfacial assembly method was developed for fabrication functionally different 2D hybrids by using the same starting set of components comprising graphene oxide, perylene chromophore, polydiacetylene surfactant and nickel nitrate as a source of divalent ions. The components were assembled through either hydrogen or coordination bonding into layered nanofilms with a thickness 8-20 nm to integrate them into conventional ITO-based solar cells. Depending on their composition, the hybrids provide different operational characteristics to the resulting devices. The combination of graphene oxide with the light-absorbing polymer provides photovoltaic properties, whereas the adding of nickel transforms the hybrid into the monopolar conductive layers. The combination of two chromophores gives a multipurpose nanoelement, which performs as either non-linear resistor, diode or photodiode. This strategy can be easily extended to other combinations of chemical tools for the design of various hybrid nanofilms with desirable functional properties for organic electronics.

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“…Александров... димость в темноте и при освещении полным спектром галогеновой лампы (Ocean Optics LS-1). Алюминиевые электроды были нанесены на поверхность пленок, как это описано в работе [10]. По результатам измерений вольт-амперных характеристик (ВАХ) была построена зависимость относительного изменения фотопроводимости слоя КТ от длины молекулы лиганда (рис.…”

Section: поступило в редакцию 14 мая 2018 гunclassified

Разработка и исследование фотовольтаических структур на основе слоев квантовых точек PbS с различными лигандами

Zvaigzne¹,

Aleksandrov²,

Гольтяпин³

et al. 2018

Письма В Журнал Технической Физики

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The photoconductivity of condensates of lead-sulfide quantum dots (QDs)—QD solids—with various organic ligands is studied. It is demonstrated that the QD solid photoconductivity increases exponentially with a reduction in length of ligand molecules and does not depend on their chemical structures, since it is governed by hopping transport of charge carriers. In contrast, the photocurrent in photovoltaic ITO/PEDOT: PSS/PbS/ZnO/Al elements depends on the ligand structure, since this structure sets the positions of QD energy levels and thus affects the efficiency of charge carrier transfer to electrodes. The difference between mechanisms of generation of photoconductivity and photovoltaic currents is discussed.

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A facile approach to fabricating ultrathin layers of reduced graphene oxide on planar solids

Cited by 20 publications

References 50 publications

Ion-Driven Self-Assembly of Lanthanide Bis-phthalocyaninates into Conductive Quasi-MOF Nanowires: an Approach toward Easily Recyclable Organic Electronics

Ion-Driven Self-Assembly of Lanthanide Bis-phthalocyaninates into Conductive Quasi-MOF Nanowires: an Approach toward Easily Recyclable Organic Electronics

A tool-box strategy for layer-by-layer assembly of ultrathin hybrid films from graphene oxide and chromophores for organic electronics

Разработка и исследование фотовольтаических структур на основе слоев квантовых точек PbS с различными лигандами

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