Dynamic instability of band structure for Fe-containing nanostructured Langmuir-Blodgett films

Анищик, В. М.; Дорожкин, Н. Н.; Grushevskaya, H. V.; Hrushevsky, V. V.; Krylov, George; Kukharenko, L. V.; Senyuk, M. A.

doi:10.1117/12.506173

Cited by 3 publications

(5 citation statements)

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“…One can observe a linear dependence of the area per molecule upon ionic radii for relative concentration ratio [Fe]/[Ln] = 1, when taking into account radius of the high-spin iron (Fe 2+ ) and the radii of trivalent rare-earth atoms. Then, taking into account the correlation between the sign of the exchange interactions and valence of lanthanide, the metal-polymer complexes in the dithionilepyrrole LB films are paramagnetic, that is also consistent with the conclusion made on the results of researches of magnetic atomic force microscopy on paramagnetism of the ironcontaining dithionilepyrrole LB films [38].…”

Section: The Intermediate Valence Of the Transition Metal In The Ln/fsupporting

confidence: 87%

“…The distinctive feature of the crystalline iron-containing dithionilepyrrole LB monolayers are exciton mechanism of metal atoms excitation in nano-cavities of organic diamagnetic matrix and magnetic ordering [8]. These properties are stipulated by paramagnetism of iron-containing complexes of aromatic macrocyclic ligands [38], from which during the self-assembly process (provided deformation of their electron density) the multi-nuclear organometallic 2D-complexes of thiophene pyrrole oligomer are formed. Nonlinear optical properties of the Langmuir-Blodgett films are caused by the transfer of energy released at localization of π-electron states of the organic ligand environment to a three-particle excitation in the conduction band which consists of two electrons and a hole (negative exciton).…”

Section: Excitonic Nature Of the Transition Metal Mixed Valence Statementioning

confidence: 99%

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Coordination Interaction between Rare Earth and/or Transition Metal Centers and Thiophene Series Oligomer Derivatives in Ultrathin Langmuir-Blodgett Films

Grushevskaya¹,

Lipnevich²,

Orekhovskaya³

2013

JMP

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It has been shown by thermodynamic and electro-chemical methods that coordination interactions are involved in the process of incorporation of rare-earth elements and/or Fe into Langmuir monolayers of oligomer with alkyl fragment. A coordination mechanism, which is responsible for self-organization of octahedral Fe(II)-complexes of nano-cyclic ligands obtained from oligomer of thiophene pyrrole series derivatives in compressed Langmuir monolayers has been proposed. It has been established that a coordinational-polymeric hexagonal network of nano-cyclic ligands with metal centers is formed at the phase transition when compressing the Langmuir monolayers of thiophene pyrrole series oligomer with alkyl fragment on surface of subphase with rare-earth (Sm, Er, Ce) and/or Fe ions.

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Section: The Intermediate Valence Of the Transition Metal In The Ln/fsupporting

confidence: 87%

Section: Excitonic Nature Of the Transition Metal Mixed Valence Statementioning

confidence: 99%

Coordination Interaction between Rare Earth and/or Transition Metal Centers and Thiophene Series Oligomer Derivatives in Ultrathin Langmuir-Blodgett Films

Grushevskaya¹,

Lipnevich²,

Orekhovskaya³

2013

JMP

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Section: Introductionmentioning

confidence: 99%

“…The drops of ejected subphase particles were also observed as subsided bubbles in ultrathin Langmuir-Blodgett (LB) films [10]. If the LB-film is thick (9 and more monolayers), the water from the bubbles is retained via interlayer interactions and the bubbles do not fall [10]. The dependence of hydrate-complex stability on the compression speed V for a monolayer formed from polymers such as Isotactic and Syndiotactic Poly(methyl methacrylate) at a dilute state can explain the dependence of the blending ratio on V , which was observed in [11].…”

Section: Introductionmentioning

confidence: 99%

Multiple-relaxation-time Finsler-Lagrange dynamics in a compressed Langmuir monolayer

Balan,

Grushevskaya,

Krylova

et al. 2015

Preprint

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In this paper an information geometric approach has been proposed to describe the two-dimensional (2d) phase transition of the first order in a monomolecular layer (monolayer) of amphiphilic molecules deposited on air/water interface. The structurization of the monolayer was simulated as an entropy evolution of a statistical set of microscopic states with a large number of relaxation times. The electrocapillary forces are considered as information constraints on the statistical manifold. The solution curves of Euler-Lagrange equations and the Jacobi field equations point out contracting pencils of geodesic trajectories on the statistical manifold, which may change into spreading ones, and converse. It was shown that the information geometrodynamics of the first-order phase transition in the Langmuir monolayer finds an appropriate realization within the Finsler-Lagrange framework.

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“…The nano-structures, which are formed at the boundary which separates two distinct phases, may exhibit unique electro-physical and optical properties [1,2,3,4]. A type of such structures is represented by the Langmuir-Blodgett (LB) monolayers, which are obtained by compressing a mono-molecular layer (monolayer) of amphiphilic molecules on the surface of a liquid subphase [5,6,7,8], in case that the compression is accompanied by the first order phase transition [9,10,11,12].…”

Section: Introductionmentioning

confidence: 99%

Finsler geometrization of classic theory for fields on the interphase boundary including monomolecular 2D-system

Balan,

Grushevskaya,

Krylova

et al. 2012

Preprint

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We prove that the Ricci scalar curvature and the Berwald scalar curvature of a two-dimensional Finsler space, considered over a vector field on the 3-dimensional flat space, are naturally related to 2dimensional electro-capillary phenomena effects observed for a compressed monolayer. The Cartan tensor and the nonlinear Barthel connection of the Finsler model are determined, and the geometric objects which depend on compression speed and on the characteristics of the electrically charged double layer are used in order to reveal several classes of structure formation within the phase transition of the first order.

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Dynamic instability of band structure for Fe-containing nanostructured Langmuir-Blodgett films

Cited by 3 publications

References 0 publications

Coordination Interaction between Rare Earth and/or Transition Metal Centers and Thiophene Series Oligomer Derivatives in Ultrathin Langmuir-Blodgett Films

Coordination Interaction between Rare Earth and/or Transition Metal Centers and Thiophene Series Oligomer Derivatives in Ultrathin Langmuir-Blodgett Films

Multiple-relaxation-time Finsler-Lagrange dynamics in a compressed Langmuir monolayer

Finsler geometrization of classic theory for fields on the interphase boundary including monomolecular 2D-system

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