A5069684131- Metal-Organic Frameworks: Synthesis and Applications
- Carbon Nanotubes in Composites
- Graphene research and applications
- Magnetism in coordination complexes
- Chalcogenide Semiconductor Thin Films
- Catalytic Processes in Materials Science
- 2D Materials and Applications
- Fullerene Chemistry and Applications
- X-ray Diffraction in Crystallography
- Lanthanide and Transition Metal Complexes
- Solid-state spectroscopy and crystallography
- Quantum Dots Synthesis And Properties
- Boron and Carbon Nanomaterials Research
- Iron-based superconductors research
- Corrosion Behavior and Inhibition
- Crystallization and Solubility Studies
- Chemical Synthesis and Characterization
- Pickering emulsions and particle stabilization
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Theoretical and Applied Studies in Material Sciences and Geometry
- Advanced Chemical Physics Studies
- nanoparticles nucleation surface interactions
- Perovskite Materials and Applications
- Crystal Structures and Properties
- Laser-Ablation Synthesis of Nanoparticles
Deutsches Elektronen-Synchrotron DESY
2020-2025
Kazan State Technical University named after A. N. Tupolev
2014-2018
Crystalline coordination polymers with high electrical conductivities and charge carrier mobilities might open new opportunities for electronic devices. However, current solvent-based synthesis methods hinder compatibility microfabrication standards. Here, we describe a solvent-free chemical vapor deposition method to prepare high-quality films of the two-dimensional conjugated polymer Cu-BHT (BHT = benzenehexanothiolate). This approach involves conversion metal oxide precursor into...
Switchable metal-organic frameworks (MOFs) change their structure in time and selectively open pores adsorbing guest molecules, leading to highly selective separation, pressure amplification, sensing, actuation applications. The 3D engineering of MOFs has reached a high level maturity, but spatiotemporal evolution opens new perspective toward materials the 4th dimension (time) by t-axis design, essence exploiting deliberate tuning activation barriers. This work demonstrates first example...
Misfit layered compounds (MLCs) are incommensurate super-lattices made up of two repeating subunits and promising for different applications due to the possibility a synergetic combination properties employed sublayers. A means fine-tuning specific MLC is alloy one elements in system. In this study, quaternary MLCs Sm1-x Y x S-TaS2 were successfully synthesized resulting structures characterized detail, with focus on tubular structures. Owing small difference between ionic radii Sm Y,...
Biohybrid supercrystals are highly ordered 3D assemblies of protein nanocages, offering versatile structural designs through the selection nanocages and their ability to encapsulate various cargos within cavities. By loading nanoparticles into these diverse complex superstructures can be engineered. In this study, individual biohybrid investigated using small‐angle X‐ray diffraction. As samples may consist from single several crystalline grains, angular cross‐correlation analysis is used...
Herein we analyze the switching kinetics of a breathing framework MIL-53(Al) with respect to different crystallite size regimes. Synchrotron time-resolved powder X-ray diffraction (PXRD) and adsorption rate analysis n-butane physisorption at 298 K demonstrate decisive role crystal affecting time domain transitions in MIL-53(Al).
Gaining insights into the kinetics and thermodynamic limits of nanostructures in high-temperature reactions is crucial for controlling their unique morphology, phase, structure. Nanotubes from lanthanide-based misfit-layered compounds (MLCs) have been known more than a decade were successfully produced mostly via chemical vapor transport protocol. The MLC nanotubes show diverse structural arrangements lattice disorders, which could salient impact on properties. Though structure charge...
Mixed-halide perovskites of the composition MAPb(BrxI1–x)3, which seem to exhibit a random and uniform distribution halide ions in absence light, segregate into bromide- iodide-rich phases under illumination. This phenomenon segregation has been widely investigated photovoltaics context since it is detrimental for material properties ultimately device performance these otherwise very attractive materials. A full understanding mechanisms driving forces remained elusive. In this work, study...
Misfit layered compounds (MLCs) MX-TX2, where M, T = metal atoms and X S, Se, or Te, their nanotubes are of significant interest due to rich chemistry unique quasi-1D structure. In particular, LnX-TX2 (Ln rare-earth atom) constitute a relatively large family MLCs, from which have been synthesized. The properties MLCs can be tuned by the chemical structural interplay between LnX TX2 sublayers alloying each Ln, T, elements. order engineer them gain desirable performance, detailed understanding...
Abstract The self‐assembly of anisotropic nanocrystals (stabilized by organic capping molecules) with pre‐selected composition, size, and shape allows for the creation nanostructured materials unique structures features. For such a material, packing individual nanoparticles play an important role. This work presents synthesis procedure ω‐thiol‐terminated polystyrene (PS‐SH) functionalized gold nanooctahedra variable size (edge length 37, 46, 58, 72 nm). impact polymer chain (Mw: 11k, 22k,...
ConspectusCompounds with layered structures (2D-materials), like transition metal-dichalcogenides (e.g., MoS2), attracted a great deal of interest in the scientific community recent years. This can be attributed to their unique lamellar structure, which induces large anisotropy physicochemical properties. Furthermore, owing weak van der Waals interaction between layers, they cleaved along a–b plane, allows fabricating single layers physical properties entirely different from bulk material....
A new scandium metal–organic framework (Sc-MOF) with the composition of [Sc(OH)(OBA)], denoted as Sc-CAU-21, was prepared under solvothermal reaction conditions using 4,4′-oxidibenzoic acid (H2OBA) ligand. Single-crystal structure determination revealed presence inorganic building unit (IBU) {Sc8(μ-OH)8(O2C)16}. It is composed cis-connected ScO6 polyhedra forming an eight-membered ring through bridging μ-OH groups. The connection IBUs leads to a 3D framework, containing 1D pores diameter...
Removal of the guest molecules from pores metal–organic frameworks (MOFs) is one critical steps in particular for highly porous associated with high internal stress. In case isostructural mesoporous DUT-49(M) (M = Cu, Ni, Mn, Fe, Co, Zn, Cd) frameworks, only DUT-49(Cu) and DUT-49(Ni) could be successfully desolvated so far by using supercritical activation. To get a deeper insight into processes occurring upon desorption solvent DUT-49(M), desolvation was monitored situ synchrotron powder...
The synthesis of intermetallic phases formed from elements with very different melting points is often time and energy consuming, in extreme cases the evaporation a reactant may even prevent formation completely. An alternative, facile approach reduction metal salts polyol process, which requires only moderate temperatures short reaction times. In addition, starting materials for this procedure are readily available do not require any special treatment to remove or passivation layers,...
Abstract Short-wavelength synchrotron radiation excitation has been an indispensable tool in the studies of properties wide gap materials using time-resolved low-temperature luminescence spectroscopy. In recent years, several setups for such investigations have launched at MAX IV Laboratory and Photon Science DESY. Two permanently stationed FinEstBeAMS P66 beamlines are operation 1.5 GeV Petra III storage rings, respectively. Mobile developed FemtoMAX P23 beamlines. FinEstBeAMS, provide time...
Intermetallic phases are usually obtained by crystallization from the melt. However, containing elements with widely different melting and boiling points, as well nanoparticles, which provide a high specific surface area, hardly accessible via such high-temperature process. The polyol process is one option to circumvent these obstacles using solution-based approach at moderate temperatures. In this study, formation of Bi2Ir nanoparticles in microwave-assisted was investigated. Solutions were...
Examining forbidden reflections provides valuable information on electronic states and the local environment of resonant atoms in crystals. Experimental studies two 002 100 TeO2 single crystals were performed at photon energies close to L1 tellurium absorption edge. It was found that spectral form corresponding these looks almost identical, which is completely unexpected for a highly anisotropic material. Theoretical consideration shows only one component fxy tensor describing dipole-dipole...
The explicit formulas for atomic coordinates of multiwalled coaxial and cylindrical scroll nanotubes with ordered structure are developed on the basis a common oblique lattice. According to this approach, nanotube is formed by transfer its bulk analogue onto surface (with circular or spiral cross section) chirality indexes tube expressed in number unit cells. monoclinic polytypic modifications also discussed geometrical conditions their formation analysed. It shown that radii multiples layer...
This article describes the structure of scroll nanotubes and associated diffraction effects in context electron from a single nanotube. It is suggested that effect multiple equidistant splitting diffuse reflections into cone series be used as criterion for conical identification. For cylindrical determination, azimuthal dependence intensity basal spots proposed characteristic sign. Good agreement between specific oscillations both theoretical experimental profiles was achieved. also...
In situ analyses provide new insights into the nucleation and growth of α-Ag 2 S, allowing fine tuning their particle size, while operando luminescence measurements helped to reveal conversion S Na(Ag 3 ) Ag during SIB cycling.
A quantitative theory of diffraction by right- and left-handed coaxial nanotubes with an ordered structure is developed. Their reciprocal lattices, including pseudo-orthogonal nodes, are studied. The explicit formulas that govern relations between direct lattices a nanotube achieved simple descriptive tool for pattern indexing proposed.
A quantitative theory of Fraunhofer diffraction by right- and left-handed multiwalled cylindrical scroll nanotubes is developed on the basis kinematical approach. The proposed mainly dedicated to structural studies individual selected-area electron technique. Strong diffuse reflections nanotube were studied explicit formulas that govern relations between direct reciprocal lattice are achieved.
Abstract SrHPO 4 is used in a multitude of applications, including biomedicine, catalysts, luminescent materials, and batteries. However, the performance these materials depends on ability to control formation transformation strontium phosphates. This work focuses application situ ex measurements, synchrotron-based X-ray diffraction (XRD) analysis, luminescence Ce 3+ Eu dopants, light transmission, reflectance, thermogravimetry track structural changes under different experimental...