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Evidence for polarization-induced phase transformations and degradation in CH_(3)NH_(3)PbI_(3)

Nano Research 2023年第7期16卷 9435-9442页

作者： Aleksei Yu.Grishko Maria A.Komkova ekaterina I.Marchenko Alexandra v.Chumakova Alexey B.Tarasov Eugene A.Goodilin Andrei A.Eliseev Department of Materials Science MSU-BIT UniversityShenzhen 517182China Department of Chemistry Lomonosov Moscow State UniversityMoscow 119991Russia Department of Materials Science Lomonosov Moscow State UniversityMoscow 119991Russia European Synchrotron Radiation Facility F-38042 GrenobleFrance

In solar cells,hybrid halide perovskites operate under constant bias,thus their stability towards electric field-induced degradation is of key *** we report on evidence of previously unidentified electric field-induced transitions and degradation path of CH_(3)NH_(3)PbI_(3)(MAPbI_(3))using elemental and phase *** films of MAPbI_(3) were deposited onto 1-2μm-pitch interdigitated electrodes and subjected to direct current(DC)-*** MAPbI_(3) layer polarized withv/μm DC electric field undergoes pronounced ion redistribution to methylammonium-rich MAPbI_(3)-y(yvokes degradation of MAPbI_(3).Using nanofocus grazing-incidence wide-angle X-ray scattering(GIWAXS),we unambiguously showed that the bias voltage induces the transformation ofβ-MAPbI_(3) to metastableδ-MAPbI_(3) polymorph via alignment of polar organic cation with the electric *** transformation is partially reversible upon field ***,once formed,δ-MAPbI_(3) disrupts the morphology of pristine film and undergoes decomposition toβ-MAPbI_(3)(β-MAPI)and PbI_(2).With the aforementioned compositional and phase changes,only MA-rich part serves as the charge separation layer,while the I-rich excitation is blocked with the PbI_(2) barrier serving as holes trapping *** observations reveal the intermediate steps in electric-field-driven degradation of halide perovskites and show the role of polar cations in the process,which is instructive for further material design with higher stability metrics.

关键词： halide perovskites stability degradation electric field ionic conductivity stoichiometry

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Monoribbed-Functionalized Macrobicyclic Iron(Ⅱ) Complexes Decorated with Terminal Reactive and vector Groups: Synthetic Strategy, Chemical Transformations and Structural Characterization

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Chinese Journal of Chemistry 2022年第17期40卷 2089-2105页

作者： Ilya P.Limarev Genrikh E.Zelinskii Svetlana A.Belova Pavel v.Dorovatovskii Anna v.vologzhanina ekaterina G.Lebed Yan Z.voloshin Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences 28 Vavilova stMoscow119991 Russia Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences 31 Leninsky prMoscow119991 Russia National Research Center Kurchatov Institute 1 Kurchatova plMoscow123098 Russia

General and straightforward synthetic strategy towards the iron(Ⅱ)clathrochelates with functionalizing substituents in their apical capping and one of the three chelate ribbed fragments was *** hexachloroclathrochelate precursors were prepared by the direct template condensation of dichloroglyoxime with a suitable boronic acid on the Fe^(2+) ion as a matrix and underwent a stepwise nucleophilic substitution with S_(2)-,N_(2)- or O_(2)-bis-nucleophiles,forming the alicyclic or aromatic N_(2)-,S_(2)-or O_(2)-six-membered *** on the reaction conditions and precursor-to-dinucleophile molar ratios,iron(Ⅱ)clathrochelates with one(S,O and N),two(S,O and N)or three(S and O)X_(2)-six-membered ribbed substituent(s)were *** reactivity substantially decreases in a row:Cl_(6)-Cage>Cl_(4)X_(2)-Cage(where X=S,O or,especially,N)>Cl_(2)X_(4)-Cage(where X=S or O).The reactive monoribbed-functionalized clathrochelates underwent further chemical transformations giving the target macrobicyclic complexes with terminal vector *** follows from the single crystal XRD data,their FeN_(6)-coordination polyhedra possess the geometry intermediate between a trigonal prism and a trigonal antiprism(φ=21.3°—25.20°).Fe-N distances vary from 1.887(6)to 1.933(8)Å.Their 3D-molecules,the hydrophobic–hydrophilic balance in which can be tuned using a ribbed functionalization,form in the crystals the intermolecular specific halogen bonds and/or hydrophobic interactions.

关键词： Macrocyclic compounds Clathrochelates Iron complexes Ligand reactivity Targetdelivery

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Segmental closure of the Mongol-Okhotsk Ocean:Insight from detrital geochronology in the East Transbaikalia Basin

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Geoscience Frontiers 2022年第1期13卷 15-27页

作者： Anastasia v.Arzhannikova Elena I.Demonterova Marc Jolivet ekaterina A.Mikheeva Alexei v.Ivanov Sergey G.Arzhannikov valentin B.Khubanov vadim S.Kamenetsky Institute of the Earth’s Crust Russian Academy of SciencesSiberian BranchIrkutskRussia Laboratoire Géosciences Rennes CNRS-UMR6118Universitéde RennesRennesFrance Geological Institute Russian Academy of SciencesSiberian BranchUlan-UdeRussia

The Late Paleozoic–Early Mesozoic Mongol-Okhotsk Ocean extended between the Siberian and Amur–North China *** timing and modalities of the oceanic closure are widely *** is largely accepted that the ocean closed in a scissor-like manner from southwest to northeast(in modern coordinates),though the timing of this process remains *** studies have shown that both western(West Transbaikalia)and eastern(Dzhagda)parts of the ocean closed almost simultaneously at the Early–Middle Jurassic ***,little information on the key central part of the oceanic suture zone is *** performed U-Pb(LA-ICP-MS)dating of detrital zircon from wellcharacterized stratigraphic sections of the central part of the Mongol-Okhotsk suture *** include the initial marine and final continental sequences of the East Transbaikalia Basin,deposited on the northern Argun-Idemeg terrane *** provide new stratigraphic ages for the marine and continental *** revised chronostratigraphy allows assigning an age of~165–155 Ma,to the collisionrelated flexure of the northern Argun-Idemeg terrane and the development of a peripheral foreland *** collisional process took place 5 to10 million years later than in the western and eastern parts of the *** demonstrate that the northern Argun-Idemeg terrane was the last block to collide with the Siberian continent,challenging the widely supported scissor-like model of closure of the MongolOkhotsk *** segments of the ocean closed independently,depending on the initial shape of the paleo continental margins.

关键词： Detrital zircon U-Pb geochronology Mongol-Okhotsk collision East Transbaikalian Basin

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Study of native oil-bearing rocks of the Cuban basin by high resolution NMR spectroscopy

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Petroleum Research 2022年第4期7卷 495-499页

作者： Ilfat Z.Rakhmatullin Sergej v.Efimov ekaterina I.Kondratyeva Lisset Miquel Gonzalez Kajum R.Safiullin Mikhail A.varfolomeev Alexander v.Klochkov vladimir v.Klochkov Kazan Federal University 18 Kremlevskaya St.Kazan420008Russian Federation

Application of high resolution^(13)C nuclear magnetic resonance(NMR)spectroscopy to characterize Cuba oil and oil-containing rock samples from Cuban basin was *** chemical shifts of^(13)C NMR functional groups for later determination the composition of the oil and rock samples were *** different contribution of the studied samples in the aliphatic and aromatic areas was *** fractions of primary,secondary,quaternary,tertiary,aromatic groups,aromaticity factor and the mean length of hydrocarbon chain length of aliphatic hydrocarbons were *** analysis on the quantitative level for all major hydrocarbon components,the aromaticity factor and the mean length of the hydrocarbon chain were carried out.

关键词： ^(13)C NMR spectroscopy Cuba oil Rock sample Functional group Qualitative analysis Quantitative composition Aromaticity

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Antiviral adsorption activity of porous silicon nanoparticles against different pathogenic human viruses

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Bioactive Materials 2022年第1期7卷 39-46页

作者： Liubov A.Osminkina Svetlana N.Agafilushkina ekaterina A.Kropotkina Nikolay Yu Saushkin Ivan v.Bozhev Sergei S.Abramchuk Jeanne v.Samsonova Alexandra S.Gambaryan Lomonosov Moscow State University Physics DepartmentLeninskie Gory 1119991MoscowRussian Federation Institute for Biological Instrumentation of Russian Academy of Sciences 142290PushchinoMoscow RegionRussian Federation Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products Russian Academy of Sciences108819MoscowRussian Federation Lomonosov Moscow State University Faculty of ChemistryLeninskie Gory 1119991MoscowRussian Federation Quantum Technology Center Lomonosov Moscow State UniversityPhysics DepartmentLeninskie Gory 1119991MoscowRussian Federation A.N.Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova 28119991MoscowRussian Federation

New viral infections,due to their rapid spread,lack of effective antiviral drugs and vaccines,kill millions of people every *** global pandemic SARS-Cov-2 in 2019-2021 has shown that new strains of viruses can widespread very quickly,causing disease and death,with significant socio-economic ***,the search for new methods of combating different pathogenic viruses is an urgent task,and strategies based on nanoparticles are of significant *** work demonstrates the antiviral adsorption(virucidal)efficacy of nanoparticles of porous silicon(PSi NPs)against various enveloped and non-enveloped pathogenic human viruses,such as Influenza A virus,Poliovirus,Human immunodeficiency virus,West Nile virus,and Hepatitis *** NPs sized 60 nm with the average pore diameter of 2 nm and specific surface area of 200 m^(2)/g were obtained by ball-milling of electrochemically-etched microporous silicon *** interaction with PSi NPs,a strong suppression of the infectious activity of the virus-contaminated fluid was observed,which was manifested in a decrease in the infectious titer of all studied types of viruses by approximately 104 times,and corresponded to an inactivation of 99.99%viruses in *** sorption capacity of PSi NPs is possible due to their microporous structure and huge specific surface area,which ensures efficient capture of virions,as confirmed by ELISA analysis,dynamic light scattering measurements and transmission electron microscopy *** results obtained indicate the great potential of using PSi NPs as universal viral sorbents and disinfectants for the detection and treatment of viral diseases.

关键词： Pathogenic human viruses Porous silicon nanoparticles virus Antiviral activity virucide

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Septic arthritis of the hand:Current issues of etiology,pathogenesis,diagnosis,treatment

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World Journal of Orthopedics 2022年第7期13卷 622-630页

作者： Konstantin v Lipatov Arthur Asatryan George Melkonyan Aleksandr D Kazantcev ekaterina I Solov'eva Urii E Cherkasov Department of General Surgery Institute of Clinical Medicine named after N.V.SklifosovskySechenov First Moscow State Medical University(Sechenov University)Moscow 119021Russia Wound and Wound Infection Surgery State Budgetary Institution“City Clinical Hospital named after S.S.Yudin of Moscow Healthcare Department”Moscow 115446Russia Department of General Surgery Physician of The Hospital for War Veterans No 3Moscow 129336Russia Department of General Surgery I.M.Sechenov First Moscow State Medical UniversityMoscow 119048Russia

Septic arthritis of the hand is a serious disease that often results in dysfunction of the joint or even the need to perform amputation of the *** rank second in the frequency of occurrence after lesions of the knee *** points concerning the etiology,the timing of the development of cartilage destruction and the development of osteomyelitis,approaches to surgical treatment,the duration of antibiotic therapy,and the start of rehabilitation measures remain the subject of numerous *** on a search in the PubMed,Web of Science and Google Scholar databases down to 1990-2021,publications on septic arthritis of the hand were found and *** following inclusion criteria were used in our review:(1) Septic arthritis of the hand;(2) Published in a peer review journal;(3) Written in English;and(4) Full text version *** were excluded if they met any of the following criteria:(1) Letters;(2) Articles published in abstract form only;and(3) Cadaveric *** arthritis of the hand was characterized by the most frequent damage to the joints of the index and middle fingers(> 50% of cases).Up to 90% of cases,the infection enters the joint as a result of penetrating trauma,animal bites,*** aureus became the most frequently isolated microorganism(30%-55%),and its polyantibiotic-resistant form Methicillin-resistant Staphylococcus aureus was found,according to various sources,from 0% to 73% among all isolated Staphylococcus *** arthritis,Pasteurella multocida(6%-11%) is often isolated as a result of animal *** cartilage destruction in the experiment developed within 24-48 h after *** clinical studies,the development of osteomyelitis was noted when treatment was delayed by more than 10 d.X-ray data during the first two weeks were *** of surgical treatment of septic *** and surgical treatment,and with the development of osteomyelitis,the implementation of arthro

关键词： Septic arthritis Hand Staphylococcus aureus Metacarpophalangeal joint Interphalangeal joint Rehabilitation

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Structural traits of woody plants and geomorphological conditions to the vegetation recovery at Ksudach caldera(Southern Kamchatka) since the explosive eruption in 1907

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Journal of Mountain Science 2020年第7期17卷 1613-1635页

作者： KOPANINA Anna v LEBEDEvA ekaterina v vLASOvA Inna I TALSKIKH Anastasia v Institute of Marine Geology and Geophysics Far Eastern Branch of the Russian Academy of SciencesNauka street1 B693022Yuzhno-SakhalinskRussia Institute of Geography Russian Academy of SciencesStaromonetny s-str.29119017MoscowRussia

This study considers the restoration of the plant cover destroyed by a catastrophic volcano eruption in the south of Kamchatka Peninsula(the Ksudach caldera,Shtyubel cone),with a particular attention to the role of woody *** aims to qualitatively estimate(at a qualitative level)the rate of the primary succession development depending on the microrelief and the modern relief-forming *** vegetation recovery in the caldera after the Shtyubel cone eruption 109 years ago proceeds slowly and *** proceeds most slowly on a thick tephra mantle continuously disturbed by water and wind erosion,lahars,debris flows,landslides,*** conditions are most typical of the western part of the caldera dominated by pumice fields with occasional patches of pioneer herbs and dwarf *** tundra communities with gradually expanding patches of shrub alder develop in the southern,eastern and northeastern parts of the Ksudach *** 1997 the area of the shrub alder communities has increased by 1.9 times,while the alpine tundra–by 1.3 times *** woody plants(dwarf shrubs and prostrate shrubs)are of particular importance in the process of the vegetation recovery on pumice *** suggest that the bark thickness of woody plants is an integrated indicator,which may serve for estimating the state of ecosystem in the course of the primary succession development on juvenile *** extremely inhospitable environments cause changes in physiological processes in the plant body and in its bark in *** results show that woody plants have a"thin"bark and develop some structural-functional arrangements for keeping bark tissues at their ***,the woody plant structure and the rate of changes in plant communities are under control of the geomorphic conditions and primarily–of physicochemical features of the pyroclastic cover.

关键词： Ksudach caldera Pioneer species Woody plants Bark Pyroclastic deposits Geomorphological processes

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In vivo urinary compatibility of Mg-Sr-Ag alloy in swine model

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Bioactive Materials 2022年第1期7卷 254-262页

作者： Di Tie Norbert Hort Minfang Chen Renguo Guan Sviatlana Ulasevich ekaterina v.Skorb Dapeng Zhao Yili Liu Patricia Holt-Torres Huinan Liu Engineering Research Center of Continuous Extrusion Ministry of EducationDalian Jiaotong UniversityDalian116028China Magnesium Innovation Center Helmholtz-Zentrum GeesthachtD-21502GeesthachtGermany School of Materials Science and Engineering Tianjin University of TechnologyTianjin300384China Infochemistry Scientific Center ITMO UniversitySt.Petersburg192007Russia College of Biology Hunan University410082ChangshaChina Department of Urology China Medical UniversityShenyang110084China Department of Bioengineering Bourns College of EngineeringUniversity of California at RiversideCA92521USA

A biodegradable metallic ureteral stent with suitable mechanical properties and antibacterial activity remains a *** we reveal the scientific significance of a biodegradable Mg-Sr-Ag alloy with a favorable combination of balanced mechanical properties,adjustable indwelling time in urinary tract and evident antibacterial activity via in vivo experiments in a swine *** to the rheo-solidification process,equiaxial microstructure and significantly refined grains(average grain size:27.1μm)were ***17Sr2 and Mg4Ag were found as the primary precipitates in the matrix,due to which the alloy obtained ca.111%increase in ultimate tensile strength in comparison to pure *** the in vitro and in vivo results demonstrated the satisfactory biocompatibility of the *** evaluation and bioindicators analysis suggested that there was no tissue damage,inflammation and lesions in the urinary system caused by the degradation *** stent also improved the post-operative bladder functions viewed from the urodynamic *** findings highlight the potential of this alloy as antibacterial biodegradable urinary implant material.

关键词： In vivo Magnesium alloy Biodegradable metals Mechanical properties Urinary compatibility

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Meso-substituted cationic 3-and 4-N-Pyridylporphyrins and their Zn(II)derivatives for antibacterial photodynamic therapy

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Journal of Innovative Optical Health Sciences 2022年第1期15卷 1-16页

作者： Aram G.Gyulkhandanyan Marina H.Paronyan Anna G.Gyulkhandanyan Karapet R.Ghazaryan Marina v.Parkhats Boris M.Dzhagarov Maria v.Korchenova ekaterina N.Lazareva Elena S.Tuchina Grigor v.Gyulkhandanyan valery v.Tuchin H.Buniatyan Institute of Biochemistry National Academy of Sciences of Armenia 5/1 Paruir Sevak Street Yerevan 0014Armenia INSERM U1204 Universite d'Evry vald'Essonne-Universite Paris-Saclay 1 Ruedu Pere JarlanBatiment Maupertuis91025Evry-CourcouronnesFrance B.I.Stepanov Institute of Physics National Academy of Sciences of Belarus 68-2 Nezavisimosti AvenueMinsk 220072Belarus Science Medical Center Saratov State University 83 Astrakhanskaya StreetSaratov 410012Russia Laboratory of Laser Molecular Imaging and Machine Learning(LMIML)National Research Tomsk State University 36 Lenin Avenue Tomsk 634050Russia Laboratory of Laser Diagnostics of Technical and Living Systems Institute of Precision Mechanics and Control Russian Academy of Sciences Saratov 410028Russia

Photodynamic inactivation of microorganisms known as antibacterial photodynamic therapy(APDT)is one of the most promising and innovative approaches for the destruction of pathogenic *** the photosensitizers(PSs),compounds based on cationic porphyrins/metalloporphyrins are most successfully used to inactivate *** of meso-substituted cationic pyridylporphyrins and metalloporphyrins with various peripheral groups in the third and fourth positions of the pyrrole ring have been synthesized in *** aim of this work was to determine and test the most e®ective cationic porphyrins and metalloporphyrins with high photoactivity against Gram negative and Gram positive *** was shown that the synthesized cationic pyridylporphyrins/metalloporphyrins exhibit a high degree of phototoxicity towards both types of bacteria,including the methicillinresistant *** *** complexes of porphyrins are more phototoxic than metal-free porphyrin *** e®ectiveness of these Zn–metalloporphyrins on bacteria is consistent with the level of singlet oxygen *** was found that the high antibacterial activity of the studied cationic porphyrins/metalloporphyrins depends on four factors:the presence in the porphyrin macrocycle of a positive charge(+4),a central metal atom(Zn2þÞand hydrophobic peripheral functional groups as well as high values of quantum yields of singlet *** results indicate that meso-substituted cationic pyridylporphyrins/metalloporphyrins cannd wider application in photoinactivation of bacteria than anionic or neutral PSs usually used in APDT.

关键词： Antibacterial photodynamic therapy cationic porphyrins/metalloporphyrins phototoxicity Zn-metalloporphyrins singlet oxygen quantum yield Gram negative and Gram positive bacteria S.aureus MRSA E.coli Salmonella typhimurium.

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Septic arthritis of the hand: From etiopathogenesis to surgical treatment

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World Journal of Orthopedics 2022年第11期13卷 993-1005页

作者： Konstantin v Lipatov Arthur Asatryan George Melkonyan Aleksandr D Kazantcev ekaterina I Solov’eva Irina v Gorbacheva Alexander S vorotyntsev Andrey Y Emelyanov General Surgery Department Institute of Clinical Medicine named after N.V.SklifosovskySechenov First Moscow State Medical University(Sechenov University)Moscow 119021Russia General Surgery Department State Budgetary Institution“City Clinical Hospital named after S.S.Yudin of Moscow Healthcare Department”Moscow 115142Russia General Surgery Department The Hospital for War Veterans N3Moscow 129336Russia General Surgery Department I.M.Sechenov First Moscow State Medical UniversityMoscow 119991Russia

BACKGROUND Septic arthritis of the hand,which is the second most common after damage of the knee joint,remains one of the leading causes of temporary *** inflammation can cause dysfunction of the joint,and in the most severe cases,the need for amputation of the finger may *** results of their treatment today,especially from a functional point of view,cannot be considered *** surgical treatment is extremely important in septic arthritis of the hand,as it helps to prevent cartilage destruction and the development of *** To explore the features of the course of septic arthritis of the hand as well as approaches to surgical treatment and its results,depending on the nature of the damage to the articular *** The results of the treatment of 170 patients with septic arthritis of the hand,which were treated in the period of 2020-2021,were *** of the interphalangeal and metacarpophalangeal joints(MCP)of fingers 1,2,and 3 was more often noted in 147(81.6%)*** most common cause of arthritis was a penetrating injury as a result of household trauma(101,59.4%),animal bite(30,17.6%),and clenched fist injury(15,8.8%).Septic arthritis with contiguous osteomyelitis was observed in 98(54.4%)*** treatment was completed with drainage and irrigation of the *** mobilization was used to restore *** patients with osteomyelitis,it was aimed at the formation of *** was not ***-term results of treatment were assessed in 142(83.5%)patients within 1 mo to 12 mo after discharge from the hospital[the median was 7 mo(IQR:4-9)].RESULTS The most commonly isolated organism was Staphylococcus aureus(35.3%).The median treatment delay in patients without osteomyelitis was 5 d(IQR:4-7);for septic arthritis with contiguous osteomyelitis,it was 14 d(IQR:5-21).Radiography for osteomyelitis within 2 wk was uninformative:41.2%of diagnoses.A single surgical treatment was

关键词： Septic arthritis Osteomyelitis Hand Surgical treatment Neoarthrosis

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