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Formation of partially ordered organic planar systems based on the in situ control of their structural organization

Published on Sep 1, 2016in Crystallography Reports 0.75
· DOI :10.1134/S1063774516050060
Yu. A. Dyakova3
Estimated H-index: 3
(RAS: Russian Academy of Sciences),
M. A. Marchenkova7
Estimated H-index: 7
(RAS: Russian Academy of Sciences)
Cite
Abstract
The possibilities of significantly improving the quality of planar systems based on photoactive porphyrin–fullerene dyads, layers based on cytochrome c and cardiolipin, and lysozyme crystals and films using a complex of in situ X-ray methods and simulation are described. The potential of X-ray phase-sensitive and surface-sensitive methods developed by M.V. Koval’chuk and researchers from his school in monitoring all stages of synthesis of partially ordered organic structure is demonstrated. This approach shows its efficiency for in situ studies: starting from the formation of complexes in solutions up to the growth of protein films and crystals.
  • References (56)
  • Citations (1)
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References56
Newest
Published on May 1, 2016in Crystallography Reports 0.75
A. E. Blagov7
Estimated H-index: 7
(RAS: Russian Academy of Sciences),
Yu. A. Dyakova3
Estimated H-index: 3
(RAS: Russian Academy of Sciences)
+ 4 AuthorsP. A. Prosekov5
Estimated H-index: 5
(RAS: Russian Academy of Sciences)
A new approach to the study of the structural quality of crystals is proposed. It is based on the use of X-ray standing-wave method without measuring secondary processes and considers the multiwave interaction of diffraction reflections corresponding to different harmonics of the same crystallographic reflection. A theory of multiwave X-ray diffraction is developed to calculate the rocking curves in the X-ray diffraction scheme under consideration for a long-period quasi-one-dimensional crystal....
Published on Apr 6, 2016in Crystal Growth & Design 4.15
Mikhail Kovalchuk7
Estimated H-index: 7
,
A. E. Blagov7
Estimated H-index: 7
+ 6 AuthorsVladimir V. Volkov1
Estimated H-index: 1
From the base structure of tetragonal lysozyme crystals, the octamer cluster was selected as the possible element of crystal growth. The proposed model was verified by small-angle X-ray scattering (SAXS) measurements of lysozyme solutions. The results showed a noticeable presence of lysozyme dimers and octamers under crystallization conditions and the total absence of oligomers under conditions where crystal growth was impossible.
Published on Mar 1, 2016in Mendeleev Communications 2.01
Yulia A. Dyakova4
Estimated H-index: 4
(RAS: Russian Academy of Sciences),
M. A. Marchenkova7
Estimated H-index: 7
(RAS: Russian Academy of Sciences)
+ 5 AuthorsMikhail Kovalchuk7
Estimated H-index: 7
(RAS: Russian Academy of Sciences)
Donor–acceptor dyads are very promising compounds for low-cost organic photovoltaic devices. The orientation of porphyrin–fullerene dyads TBD6a and DHD6ee formed on a solid substrate by the Langmuir–Schaefer method is considered. It was shown by X-ray reflectivity that molecular orientation persisted during that transmission from liquid to solid surface in spite of the dyad molecules low anisometry.
Published on Jan 1, 2016in Mendeleev Communications 2.01
Valentine P. Ananikov42
Estimated H-index: 42
(RAS: Russian Academy of Sciences)
An insight into nanosized chemical systems revealed spatial organization of metal nanoparticles that shows similar patterns to those typically observed in human and animal spatial behavior. Based on this fundamental relationship, we can consider the origins of survival instinct as a possible evolutionary development of nanoscale phenomena.
Published on Jan 1, 2016in Crystallography Reports 0.75
A. V. Popov1
Estimated H-index: 1
(Altai State Technical University)
Metallic lithium is used to demonstrate the possibilities of applying non-self-adjoint operators for quantitative description of orbital excitations of electrons in crystals. It is shown that, the nonequilibrium distribution function can be calculated when solving the spectral problem; therefore, the kinetic properties of a material can also be described with the unified band theory.
Published on Jan 1, 2016in Crystallography Reports 0.75
M. A. Marchenkova7
Estimated H-index: 7
(RAS: Russian Academy of Sciences),
V. V. Volkov11
Estimated H-index: 11
(RAS: Russian Academy of Sciences)
+ 6 AuthorsMikhail Kovalchuk7
Estimated H-index: 7
(RAS: Russian Academy of Sciences)
The molecular state of hen egg white lysozyme in solution has been studied by small-angle X-ray scattering (SAXS) combined with molecular simulation. The addition of a precipitant is shown to change the state of the protein molecules in solution. The SAXS data were processed using the constructed models of different oligomers. Under the crystallization conditions, lysozyme is shown to be present in solution as monomers (96.0%), dimers (1.9%), and octamers (2.1%), whereas tetramers and hexamers a...
Published on Nov 17, 2015in Langmuir 3.68
M. A. Marchenkova7
Estimated H-index: 7
,
Yulia A. Dyakova4
Estimated H-index: 4
+ 2 AuthorsYury A. Vladimirov1
Estimated H-index: 1
The formation of the complex of cytochrome c (Cytc) with a phospholipid cardiolipin (CL) in mitochondria is a crucial event in apoptosis development. There are two viewpoints on the structure of the complex. (1) Cytc is bound on the surface of the lipid bilayer. (2) The complex is a hydrophobic nanoparticle Cytc-CL formed by Cytc molten globule, covered by CL monolayer.1 In the present work, we attempted to bridge the gap between these two structures. We investigated the interaction between Cytc...
Published on Aug 31, 2015in Russian Chemical Reviews 4.61
Konstantin M. Boyko8
Estimated H-index: 8
(RAS: Russian Academy of Sciences),
Vladimir O. Popov19
Estimated H-index: 19
(RAS: Russian Academy of Sciences),
M. V. Kovalchuk11
Estimated H-index: 11
(RAS: Russian Academy of Sciences)
Published on Jan 1, 2015in Faraday Discussions 3.71
Maria A. Vorontsova8
Estimated H-index: 8
(UH: University of Houston),
Dominique Maes25
Estimated H-index: 25
(Vrije Universiteit Brussel),
Peter G. Vekilov47
Estimated H-index: 47
(UH: University of Houston)
The two-step mechanism of nucleation of crystals in solutions posits that the formation of crystal nuclei occurs within structures of extended lifetimes, in which the nucleating solute is at high concentration. The validity of this mechanism has been demonstrated for proteins, small-molecule organic and inorganic materials, colloids, and polymers. Due to large molecule sizes, proteins are an ideal system to study the details of this nucleation pathway, in particular the formation mechanisms of t...
Published on Nov 20, 2014
Lovorka Pitarević Svedružić3
Estimated H-index: 3
,
Sanda Rončević7
Estimated H-index: 7
,
Davorin Medaković5
Estimated H-index: 5
Cited By1
Newest
Published on Jul 1, 2017in Crystallography Reports 0.75
Mikhail V. Kovalchuk2
Estimated H-index: 2
(SPbU: Saint Petersburg State University),
A. S. Boikova2
Estimated H-index: 2
(RAS: Russian Academy of Sciences)
+ 5 AuthorsA. Yu. Seregin3
Estimated H-index: 3
(RAS: Russian Academy of Sciences)
A modification of the Langmuir–Schaefer method for the fabrication of high-quality protein films on a solid substrate was proposed and applied to lysozyme. The procedure relies on the use of a pre-prepared protein solution, the parameters of which correspond to crystallization conditions. A lysozyme Langmuir monolayer was shown to be formed with the involvement of complexes, namely, dimers and octamers of protein molecules that are present in such protein solutions. These complexes apparently re...