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Recent progress in structural modulation of metal nanomaterials for electrocatalytic CO_(2) reduction

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Rare Metals 2021年第6期40卷 1412-1430页

作者： Chen-Huai Yang Farhat Nosheen Zhi-Cheng Zhang Tianjin Key Laboratory of molecular Optoelectronic sciences Department of ChemistrySchool of ScienceTianjin University&Collaborative Innovation Center of Chemical Science and EngineeringTianjin 300072China Department of Chemistry Division of Science and TechnologyUniversity of EducationLahore 54660Pakistan

The electrochemical CO_(2) reduction(ECR)into value-added products presents an appealing approach to mitigate CO_(2) emission caused by excess consumption of fossil *** obtain high catalytic activity and selectivity toward target product in ECR,designing and developing a stable and efficient electrocatalyst is of significant *** date,metal nanomaterials have been widely applied as electrocatalysts for ECR due to their unique physicochemical *** structural modulation of metal nanomaterials is an attractive strategy to improve the catalytic *** this review,the recent progress of structural modulation,including size,facet,grain boundary,composition,interface,ligand modification,and crystal phase,is systematically summarized from both theoretical and experimental ***,the opportunities and perspectives of structural modulation of metal nanomaterials for ECR are proposed.

关键词： CO_(2)reduction Structural modulation Electrocatalysis Metal nanomaterial Crystal phase

A facile design for multifunctional AIEgen based on tetraaniline derivatives

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science China Chemistry 2019年第6期62卷 732-738页

作者： Beibei Liu Wei He Hao Lu Kun Wang Mingming Huang Ryan Tsz Kin Kwok Jacky Wing Yip Lam Longcheng Gao Jiping Yang Benzhong Tang Key laboratory of Aerospace Advanced Materials and Performance Ministry of Education School of Materials Science and EngineeringBeihang University Department of Chemistry HKUST Jockey Club Institute for Advanced Study Institute of Molecular Functional Materials Division of Biomedical Engineering State Key Laboratory of Molecular Neuroscience Division of Life Science The Hong Kong University of Science and Technology Laboratory of Bio-Inspired Smart Interfacial science and Technology of Ministry of Education Key Laboratory of Beijing Energy School of Chemistry and Environment Beihang University

Aniline oligomers have been widely used in many fields due to their excellent physicochemical properties. Owing to strong intermolecular interactions, their emission is always weakened or quenched when they are in high concentration or aggregated state, which greatly limits their fluorescent applications. Inspired by the concept of aggregation-induced emission(AIE), herein we introduced large steric groups onto the aniline oligomer to prevent the formation of packing structure. In particular, diphenyl vinyl group was bonded with oligomeric tetraaniline by a facile synthetic procedure with high yield. The obtained aniline oligomer derivative exhibited typical AIE features, which was also confirmed by density functional theoretical calculation. More importantly, this AIE oligomer was able to detect Fe^(3+) ions selectively and quantitatively. The fluorescence intensity decreased linearly along with the increment of Fe^(3+) concentration. Moreover, we demonstrated that this AIE oligomer could stain live bacteria, such as E. coli and S. aureus efficiently. All these results suggest that such a readily accessible and multifunctional tetraaniline derivative provides a new platform for the construction of fluorescent materials.

关键词： tetraaniline aggregation-induced emission Fe3+ ion detection bacteria imaging

Effect of Co(Ⅱ) dopant on the removal of Methylene Blue by a dense copper terephthalate

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Journal of Environmental sciences 2019年第7期31卷 68-79页

作者： Chompoonoot Nanthamathee division of Chemistry Department of Science Walailak University

In this research, for the first time, a series of Co(Ⅱ) doped copper terephthalate(Co X-Cu BDC,where X is doping percentage) were successfully synthesized via solvothermal method and were tested for dye removal application. The physical properties of Co X-CuBDC were studied by several techniques including X-ray diffraction(XRD), field emission scanning electron microscopy(FESEM), energy-dispersive spectroscopy(EDS), thermogravimetric analysis(TGA)and Brunauer–Emmett–Teller(BET) surface area analysis. The incorporation of Co(Ⅱ) dopant leads to isomorphic substitution of Cu(II) in the CuBDC framework with the maximum doping percentage of 22. Doping and parent MOFs which are non-porous were used for removal of Methylene Blue(MB) from aqueous solution. Adsorption capacity of Co22-CuBDC and CuBDC are 52 and 58 mg/g, respectively, both of which are higher than the adsorption capacity recorded from several high porosity MOFs. Adsorption kinetic studies indicate that adsorption process follows pseudo-second order model while the adsorption mechanism is dominated by electrostatic attraction. Overall, even though these materials show non-porous characteristic,it can be used effectively in wastewater treatment application.

关键词： Mixed-metal MOFs Methylene Blue adsorption Wastewater treatment Pseudo-second order model Adsorption kinetics

Study of thermal decoherence of harmonic oscillators

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原子与分子物理学报 2025年第5期42卷 108-114页

作者： LI Jian ZHOU Gao-Liang YAN Zheng-Xin LIU Wei WANG Zhao-Qi College of science Xi’an University of Science and TechnologyXi’an 710054China

The thermal decoherence of harmonic oscillators is investigated *** quantum system presented here is a one-dimensional oscillator with angular frequency,which is surrounded by a thermal bath of environmental *** are various environmental oscillators with different angular frequency(below an ultraviolet cutoff).At the beginning,the quantum system is a pure state and the environmental oscillators are in thermodynamic equilibrium with *** a period,the system-environment interactions inspire significant decoherence of the quantum *** decoherence is displayed by explicit calculations of the purity and von Neumann entropy of the quantum *** is worth noting that the decoherence could be significant even in the weak coupling and low temperature case due to the large amount of environmental degrees of *** the decoherence process is inspired between the quantum system and an ordinary thermal environment here,the thermal decoherence result is quite general.

关键词： Quantum decoherence Grand canonical ensemble Oscillators

ERK phosphorylation functions in invadopodia formation in tongue cancer cells in a novel silicate fibre-based 3D cell culture system

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International Journal of Oral science 2018年第4期10卷 253-262页

作者： Masaharu Noi Ken-Ichi Mukaisho Saori Yoshida Shoko Murakami Shinya Koshinuma Takeshi Adachi Yoshisato Machida Masashi Yamori Takahisa Nakayama Gaku Yamamoto Hiroyuki Sugihara Department of Oral and Maxillofacial Surgery Shiga University of Medical Science Department of Pathology Division of Molecular Diagnostic PathologyShiga University of Medical Science Dental Oral Surgery Nagahama Red Cross Hospital

To screen for additional treatment targets against tongue cancer, we evaluated the contributions of extracellular signal-related kinase(ERK), AKT and ezrin in cancer development. Immunohistochemical staining showed that ERK and ezrin expressions were significantly higher in invasive squamous cell carcinoma than in carcinoma in situ. To investigate the roles of ERK and ezrin in cancer development, we used the non-woven silica fibre sheet Cellbedwith a structure resembling the loose connective tissue morphology in a novel 3 D culture system. We confirmed that the 3 D system using CellbedTMaccurately mimicked cancer cell morphology in vivo. Furthermore, cell projections were much more apparent in 3 D-cultured tongue cancer cell lines than in 2 D cultures. Typically, under conventional 2 D culture conditions, F-actin and cortactin are colocalized in the form of puncta within ***, in the 3 D-cultured cells, colocalization was mainly observed at the cell margins, including the projections. Projections containing F-actin and cortactin colocalization were predicted to be invadopodia. Although suppressing ezrin expression with small interfering RNA transfection caused no marked changes in morphology, cell projection formation was decreased, and the tumour thickness in vertical sections after 3 D culture was markedly decreased after suppressing ERK activity because both the invasion ability and proliferation were inhibited. An association between cortactin activation as well as ERK activity and invadopodia formation was detected. Our novel 3 D culture systems using Cellbed? are simple and useful for in vitro studies before conducting animal experiments. ERK contributes to tongue cancer development by increasing both cancer cell proliferation and migration via cortactin activation.

关键词： ERK phosphorylation functions in invadopodia formation in tongue cancer cells in a novel silicate fibre-based 3D cell culture sy HSC

Synthesis and Structure of a Ladder-like Co-crystal Cu^ICl with 3,5-Dipropyl-4-amino-1,2,4-triazole

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Chinese Journal of Structural Chemistry 2015年第3期34卷 401-407页

作者：闫娟枝卢丽萍苏峰朱苗力 Institute of molecular science Shanxi University Taiyuan University

Redox reaction of a mixture of CuC12·2H2O, HaPO3 and dpatrz （3,5-dipropyl- 4-amino-1,2,4-triazole） at room temperature yields one new compound, [Cu（1）（/.t2-dpatrz）aCu（1）CI2], with two independent cis- and trans-propyl side chain molecules. Compound 1 crystallizes in monoclinic, space group P21/c with a = 7.474（1）, b = 17.807（1）, c = 18.851（1） A, β = 108.32（1）°, V = 2381.7（2） A3, Z = 4, C16H32CI2Cu2Ns, Mr = 534.48, Dc = 1.491 ***-3,μ = 2.03 mm-1, F（000） = 1104, GOOF = 1.050, the final R = 0.0445 and wR = 0.1162 for 3162 observed reflections （I 〉 2σ（I））. Compound 1 shows discrete dimeric structures （A and B） containing inversion centers and the Cu（l） ions are coordinated in triangle geometries. The isomers are connected by N-H…CI hydrogen bonds, chains with graph-set C（7） and rings R22（14） and C-H..＇Jr interactions into stair-step chains （Tapes A and B） running parallel to the [01-1] direction. The N-H…C1 hydrogen bonds result in chain and cyclic structures with graph-sets C22（17） and R34（18） linking tapes A and B to form two-dimensional networks along the [031] direction. Packing of crystal 1 is stabilized by rings R34（18） and weak C-H…C1 hydrogen bonds parallel to the [01-2] direction. Bond valence sum （BVS） and UV-Vis absorption spectra support the existence of Cu（I） ions. Compound 1 exhibits extensive green blue phosphorescence in the solid state at room temperature.

关键词： copper(I)-halide complex, 1,2,4-triazole, isomer, ladder-like assembly,luminescence

Crystal Structure and Theoretical Studies of Tetrahytrate(1-H-1,2,4-triazole-3,5-dicarboxylicacid)nickel

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Chinese Journal of Structural Chemistry 2017年第8期36卷 1334-1340页

作者：闫娟枝卢丽萍 Institute of molecular science Shanxi University Taiyuan University

A new compound, [Ni（Hdctrz）（H2O）4]（1, H3dctrz = 1-H-1,2,4-triazole-3,5-dicarboxylic acid）, has been successfully synthesized via slow evaporation. The structure of 1 was characterized by FT-IR, elemental analysis and single-crystal X-ray diffraction. Compound 1 crystallizes in monoclinic, space group P21/c with a = 6.871（1）, b = 11.468（1）, c = 12.178（1） A, b = 101.291（1）o, V = 941.01（16） A3, Z = 4, C4H9N3O8Ni, Mr = 285.85, Dc = 2.018 g·cm–3, m = 2.10 mm–1, F（000） = 584, GOOF = 1.025, the final R = 0.0515 and wR = 0.2125 for 1404 observed reflections（I 〉 2s（I））. The crystal structure is assembled by a slightly distorted {NiNO5} octahedral geometry and hydrogen bonds viz. N–H…O, O–H…O, C–O…π and π···π weak interactions. A rare π···π interaction from triazolate and carboxylate is affirmed through the molecular orbitals（MO） of three adjacent Ni CN molecules. The 3D Hirshfeld surface analysis was employed to gain additional insight into the interactions responsible for the packing of compound 1. Quantitative examination of 2D fingerprint plots revealed, amongst others, the dominating participation of O···H, N···H and π···π interactions in the molecular packing.

关键词： 1-H-1 2 4-triazole-3 5-dicarboxylic acid Ni compound weak interactions Hirshfeld surface

Small extrachromosomal circular DNA in amyotrophic lateral sclerosis matter

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Neural Regeneration Research 2025年第5期20卷 1411-1413页

作者： Marcos J.Arauzo-Bravo Daniela Gerovska Matthias Schwab Alexandra Kretz Computational Biology and Systems Biomedicine Biodonostia Health Research InstituteSan SebastianSpain Basque Foundation for science IKERBASQUEBilbaoSpainMax Planck Institute for Molecular BiomedicineComputational Biology and Bioinformatics GroupMünsterNorth Rhine-WestphaliaGermany Department of Cell Biology and Histology Faculty of Medicine and NursingUniversity of Basque Country(UPV/EHU)LeioaSpain Department of Neurology Jena University HospitalJenaThuringiaGermany

Comprehensive studies identify motor neuron spectrum disorders including amyotrophic lateral sclerosis(ALS)as globally rising fatal disorders with the highest prevalence in aging populations,influenced by ethnicity and ancestry(GBD 2016 Motor Neuron Disease Colla borators,2018).While~10% of diagnoses involve a family history(fALS),most cases are considered sporadic(sALS).However,population-based studies suggest that even cases without a common index mutation impart heritability(Ryan et al.,2019),indicating a crucial role of rare and as yet unknown genetic denominators.

关键词： amyotrophic sclerosis

Flexural Mechanical Properties of Functional Gradient Hydroxyapatite Reinforced Polyetheretherketone Biocomposites

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Journal of Materials science & Technology 2016年第1期32卷 34-40页

作者： Yusong Pan Yan Chen Qianqian Shen Laboratory of Multiscale Materials and molecular Catalysis School of Material Science & EngineeringAnhui University of Science and Technology

Functional gradient hydroxyapatite reinforced polyetheretherketone is one of the most promising or- thopedic implant biomaterials. In this study, functional gradient hydroxyapatite reinforced polyetheretherketone biocomposites were prepared by layer-by-layer method with the incorporation of hot press molding technology. Studies on the flexural mechanical properties of the functional gradient biocomposites revealed that the flexural stress-stain behavior of the biocomposites presented linear elastic characteristics. The fracture mechanism of the functional gradient biocomposites was predominated by brittle rupture. Furthermore, both flexural strength and break strain of the functional gradient HA/PEEK biocomposites obviously decreased with the rise of the total HA content. The effect of hydroxyapatite concentration difference between adjacent layers （HCDBAL） on the flexural strength obviously relied on the level of HCDBAL and total HA content in the functional gradient HA/PEEK biocomposites. The higher the total HA content in the functional gradient biocomposites is, the less the influence degree of HCDBAL on the flexural strength is. Moreover, total HA content and HCDBAL played synergistic influence on the flexural modulus of the functional gradient HA/PEEK biocomposites.

关键词： Hydroxyapatite Functional gradient HA/PEEK biocomposites Flexural strength Flexural modulus