Dalton Transactions最新文献

{"title":"Acetylacetone as an axial ligand in metalloporphyrin: the first crystal structure, coordination chemistry, and potential application as efficient photosensitizer","authors":"Abdul K. Choudhury, Jagannath Bhuyan","doi":"10.1039/d5dt00010f","DOIUrl":"https://doi.org/10.1039/d5dt00010f","url":null,"abstract":"Acetylacetone, a diketone, is a very common bidentate ligand and has been used in chemistry laboratory classes for teaching the synthesis of different types of metal coordination compounds long back. It is a versatile organic compound and a large number of coordination and heterocyclic compounds based on it are known. This work demonstrates the first single crystal structure of an acetylacetone-coordinated metalloporphyrin, [MgT(4-Cl)PP(Hacac)], 1 [T(4-Cl)PP= 5,10,15,20-tetrakis(4-chlorophenyl)porphyrin, Hacac= acetylacetone. Compound 1 was characterized by UV-visible, infrared, NMR, and Mass spectroscopy as well as single-crystal and Powder XRD. Compound 1 is penta-coordinated with axial ligation of an acetylacetone molecule via the keto oxygen atom of a more stable enolic form. The redox properties of 1 were studied by cyclic voltammetry. Photophysical properties were investigated by the fluorescence emission spectral analysis. The synthesized porphyrin compounds exhibited good photostability and singlet oxygen generation ability. Compound 1 was used as a photosensitizer for the degradation of two common water contaminants, methylene blue (MB) and crystal violet (CV). Studies were conducted in water under heterogeneous conditions using sunlight, and 1 was found to be efficient in the photodegradation of MB and CV dyes, following pseudo-first-order kinetics with 100% degradation of MB and CV dye after 20 and 15 minutes, respectively. Quenching experiments in the presence of scavengers confirmed the mechanism of degradation via singlet oxygen. FTIR spectral analyses verified the degradation of dyes and the multiple reaction intermediates due to the breaking of the bonds during the photocatalytic degradation process, which was confirmed by mass spectral analyses. Moreover, from the photostability experiment, it was found that compound 1 could be used up to 6 cycles without appreciable activity loss. Theoretical calculations like optimization of geometry, the energy of frontier molecular orbitals, simulation of electronic spectra, and molecular electrostatic potential (MEP) analysis were performed to support the experimental results.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"8 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143880245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A drive towards a bi-linker strategy: tailoring MOF efficiency for advanced battery–supercapacitor hybrid devices","authors":"Junaid Khan, Anique Ahmed, Abdullah A. Al-Kahtani","doi":"10.1039/d5dt00632e","DOIUrl":"https://doi.org/10.1039/d5dt00632e","url":null,"abstract":"Metal–organic frameworks (MOFs) have emerged as promising materials for supercapacitor applications; however, challenges such as limited conductivity, stability, and rate capability hinder their practical implementation. Despite extensive efforts, including hybridization and bimetallic strategies, a significant performance gap remains. In this work, we introduce a drive towards a bi-linker approach to engineer nickel-based MOFs, systematically varying the ratio of pyridine-2,6-dicarboxylic acid and pyromellitic acid (linkers) to tailor their morphological evolution and electrochemical properties. This strategic modulation was found to directly influence electrochemical behavior. Among the synthesized materials, X2 (PDC<small>_0.75</small>PMA<small>_0.25</small>-MOF) exhibited the most favorable characteristics, achieving low ESR (0.72 Ω) and electrochemical efficiency (demonstrating 694.3 C g<small>⁻¹</small> at 3 mV s<small>⁻¹</small> and 576.6 C g<small>⁻¹</small> at 0.6 A g<small>⁻¹</small>) in a three-electrode cell configuration. To further evaluate its real device potential, a battery–supercapacitor hybrid device (X2//AC) was fabricated, demonstrating a remarkable specific capacity of 298.1 C g<small>⁻¹</small> at 1.4 A g<small>⁻¹</small>, a high specific energy of 70.3 W h kg<small>⁻¹</small> at a power density of 1190 W kg<small>⁻¹</small>, and good cycling stability (98.5% retention after 5000 cycles). These findings open a new pathway for future research on bi-linker-driven MOF design, providing a novel strategy for enhancing electrochemical performance and advancing next-generation energy storage applications.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"67 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143880292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis, Structural Characterization, and Cytotoxic Evaluation of Monofunctional cis-[Pt(NH3)2(N7-guanosine/2’-deoxyguanosine)X] (X = Cl, Br, I) Complexes with Anticancer Potential","authors":"Asjad Ali, Gianluca Rovito, Erika Stefàno, Federica De Castro, Giuseppe Ciccarella, Danilo Migoni, Elisa Panzarini, Antonella Muscella, Santo Marsigliante, Michele Benedetti, Francesco Paolo Fanizzi","doi":"10.1039/d5dt00616c","DOIUrl":"https://doi.org/10.1039/d5dt00616c","url":null,"abstract":"A series of new monofunctional platinum(II) complexes of the type cis-[Pt(NH₃)₂(N7-guanosine/2’-deoxyguanosine)X] (X = Cl, Br, I) were synthesized and characterized using NMR spectroscopy, mass spectrometry, and ICP-atomic emission spectroscopy. These complexes are designed to address the limitations of conventional bifunctional platinum-based drugs, such as cisplatin, which include issues with cytotoxicity and selectivity towards cancer cells. By incorporating guanosine or 2’-deoxyguanosine ligands and varying halido substituents, the study investigated how structural modifications influence the selectivity and cytotoxicity of the different analogues. To evaluate the anticancer potential of the newly synthesized platinum derivatives, various cancer cell lines were tested, including renal (Caki-1), uterine cervix (HeLa), breast (MCF-7), lymphoma (Raji), and mesothelioma (ZL-34). Additionally, selectivity against tumor cells was assessed by comparing their cytotoxic effects to those in the healthy, immortalized HK-2 cell line, a proximal tubular cell line derived from a normal human adult male kidney. Cytotoxicity analysis revealed that bromido-substituted Pt(II) complexes exhibited superior cytotoxicity across several cancer cell lines, particularly in HeLa and Raji cells, compared to their chlorido- and iodido-substituted counterparts. The iodido complexes exhibited higher efficacy against MCF-7 breast cancer cells, suggesting tumor-specific selectivity. Notably, these complexes demonstrated lower cytotoxicity in healthy cells compared to most of the tested cancer cell lines, as reflected by generally favorable selectivity indices (SI) relative to cisplatin.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"31 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143880246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fe(III) and Ni(II) Imidazole-Benzimidazole Mixed-Ligand Complexes: Synthesis, Structural Characterization, Molecular Docking, DFT Studies, and Evaluation of Antimicrobial and Anti-Inflammatory Activities","authors":"Nourah Almulhim, Hany M. Abd El-Lateef, Mohamed Gouda, Mai M. Khalaf, Aly Abdou","doi":"10.1039/d5dt00551e","DOIUrl":"https://doi.org/10.1039/d5dt00551e","url":null,"abstract":"This work delves into the synthesis, characterization, and bioactivity of new metal complexes of Imidazole-based ligand (IM) and a Benzimidazole-based ligand (BZ) with Fe(III) and Ni(II) ions. A broad scope of characterization techniques, including elemental analysis, IR spectroscopy, magnetic moment measurement, electronic spectrum, mass spectrometry, thermal analysis, and DFT calculations, ensured the successful preparation of the complexes, establishing a 1:1:1 (M:IM:BZ) stoichiometry. Both the NiBZIM and FeBZIM complexes possessed octahedral geometry with coordinated one water and two waters of Fe(III) and Ni(II), respectively. Calculation by the DFT model demonstrated that the reduction of energy gap and rise of softness for the metal complexes resulted due to metal coordination, enhancing reactivity and forecasted biological activity of the complexes. FeBZIM and NiBZIM complexes exhibited strong antimicrobial activity, whereas both complexes displayed improved efficacy towards Gram-positive as well as Gram-negative bacteria compared to their corresponding free ligands. Their activities were comparable to the standard antibiotic Chloramphenicol. Furthermore, these complexes also exhibited good antifungal activity towards Aspergillus niger as well as Candida albicans, surpassing the free ligands. MIC values also ensured enhanced antimicrobial activity of the metal complexes. Other than these operations, the complexes demonstrated great anti-inflammatory activity of which FeBZIM complex was the strongest with a direction towards the reference drug IC50. Molecular docking against E. coli FabH–CoA complex (PDB ID: 1HNJ) and Human Cyclooxygenase-2 (COX-2) (PDB ID: 5IKT) that the FeBZIM complex exhibited the best binding affinity with the establishment of several hydrogen bonds with key amino acid residues, suggesting a favorable antibacterial activity. Overall, the newly synthesized FeBZIM and NiBZIM complexes demonstrate immense potential as novel antimicrobial and anti-inflammatory drugs with enhanced efficacy relative to their free ligands.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"45 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143880241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of substituents on the P-P and P=C bond properties in phosphanylphosphaalkenes","authors":"Aleksandra Ziolkowska, Wiktoria Błaszkiewicz, Tomasz Kruczyński","doi":"10.1039/d5dt00692a","DOIUrl":"https://doi.org/10.1039/d5dt00692a","url":null,"abstract":"A new lithium salt of diphosphane, (<em>i</em>Pr₂N)PhP-P(SiMe₃)Li (<strong>2</strong>), featuring two electronically differentiated substituents, is presented. Its reaction with benzophenone was then carried out, yielding a novel phosphanylphosphaalkene (3). The isolated compound was subsequently treated with <em>n</em>BuLi and PhLi to obtain stable activators (<strong>3a</strong> and <strong>3b</strong>) for the potential polymerization of phosphorus-rich compounds.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"1 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Theoretical Study on the Modulation of Oxygen Electrocatalysis in Co-Based Single-Atom Catalysts by N and S Co-Coordination","authors":"Rui He, Xinyu Zhang, Linlin Zhang, Nan Chen, Zhen Gao, Yanning Wang, Kai Xiong","doi":"10.1039/d5dt00771b","DOIUrl":"https://doi.org/10.1039/d5dt00771b","url":null,"abstract":"Understanding how local coordination environments influence oxygen electrocatalytic activity is essential for designing efficient non-precious metal catalysts. In this work, density functional theory (DFT) calculations were performed to systematically explore the impact of N/S co-coordination on the electronic structure and catalytic properties of graphene-supported cobalt single-atom catalysts (SACs). The results demonstrate that all Co–N–S configurations exhibit negative formation energies and positive dissolution potentials, suggesting favorable thermodynamic and electrochemical stability. Among these configurations, CoN₂S₂-pen shows a lower oxygen reduction reaction (ORR) overpotential of 0.53 V, while CoN₂S₂-hex exhibits superior oxygen evolution reaction (OER) performance with an overpotential of 0.42 V. Analyses of charge density differences and projected density of states (PDOS) reveal strong hybridization between Co 3d and O 2p orbitals, which facilitates O₂ activation and stabilizes intermediate adsorption. These findings underscore the potential of N/S co-coordination in modulating the electronic structure and enhancing the bifunctional oxygen electrocatalytic performance of Co-based SACs.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"24 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanosensors for hazardous pesticides and nanofertilizers for sustainable agricultural: Contribution of carbon quantum dots","authors":"Tumpa Biswas, Jiko Raut, Diptiman De, Prithidipa Sahoo","doi":"10.1039/d5dt00633c","DOIUrl":"https://doi.org/10.1039/d5dt00633c","url":null,"abstract":"The increasing global population threatens food security, necessitating sustainable agricultural practices. Intensive farming has led to the excessive use of pesticides and fertilizers, contaminating soil and water sources causing the impairment of the environment. Pesticide residues enter the food chain, posing serious health risks like neurotoxicity, genetic mutations, and diseases such as Alzheimer's, Parkinson's, diabetes, etc. Conventional detection methods are costly, complex, time- consuming, unsuitable for onsite detection, and mostly are not eco-friendly. Fluorescent-based nano-biosensors, particularly carbon quantum dots (CQDs), offer a promising alternative to detect pesticides and herbicides due to their high sensitivity, biocompatibility, low toxicity, and photostability. In addition to its sensory application, CQDs could be used as an alternative to conventional chemical fertilizers for crop production. CQDs-based nano fertilizers improve nutrient absorption, boost plant growth, and increase resistance to environmental stressors. This review will highlight the key advancements of CQDs in terms of various synthetic techniques and their usage as nanosensors and nano fertilizers.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"13 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"(C5N2H7)IO2F2 and (C3N6H8)(IO2F2)2 : Two new organic-inorganic hybrid fluoroiodate birefringent crystals","authors":"Si Yuan, Chun-Li Hu, Jiang-Gao Mao","doi":"10.1039/d5dt00524h","DOIUrl":"https://doi.org/10.1039/d5dt00524h","url":null,"abstract":"Birefringent crystals are anisotropic material commonly used in modern optical devices to obtain polarized light. Traditional commercial birefringence crystals, such as, MgF<small>₂</small> and CaCO<small>₃</small>, have the problems of small birefringence and not easy to grow. Herein, two organic-inorganic hybrid birefringence crystals composed of π-conjugated organic groups and lone pair-containing (IO<small>₂</small>F<small>₂</small>)<small>^-</small> anions, namely, (C<small>₅</small>N<small>₂</small>H<small>₇</small>)IO<small>₂</small>F<small>₂</small> and (C<small>₃</small>N<small>₆</small>H<small>₈</small>)(IO<small>₂</small>F<small>₂</small>)<small>₂</small>, were successfully grown by a simple evaporation method. In their structures, the π-conjugated organic cations and (IO<small>₂</small>F<small>₂</small>)<small>^-</small> anions are interconnected through hydrogen bonding and π-π stacking interactions into 3D supramolecular networks. Both of them exhibit large birefringence of 0.30 @ 550 nm and 0.23 @ 550 nm, superior to most of conventional birefringence materials. Moreover, UV-Vis-NIR diffuse reflectance spectra demonstrate that they have wide band gaps (4.06 eV and 4.10 eV) because of the presence of the F element with strong electronegativity. Theoretical analyses suggest that the parallel arrangement of the π conjugated cations resulted in large optical anisotropy. This work provides new promising candidates for UV birefringence materials.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"35 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selective detection of SO2 in NU-1000 via organometallic nickel silylphosphine post-synthetic complex incorporation","authors":"Juan L. Obeso, Luz Barrios-Vargas, Valeria López-Cervantes, Yoarhy Amador-Sánchez, Nancy Martín-Guaregua, Ricardo A. Peralta, Ramon Munoz, Ana Martínez, Carolina Leyva, Diego Solis-Ibarra, Elí Sánchez-González, Ilich A. Ibarra, Virginia Montiel-Palma","doi":"10.1039/d3dt03985d","DOIUrl":"https://doi.org/10.1039/d3dt03985d","url":null,"abstract":"The adsorption and detection of SO2 using Zr-based MOF, NU-1000 grafted with an organometallic nickel silylphosphine complex ([NiSi]@NU-1000) via post-synthetic modification are reported. [NiSi]@NU-1000 exhibits high stability under dry and wet SO2, with a high cyclability performance. Moreover, fluorescence experiments postulate [NiSi]@NU-1000 as a promising SO2 detector due to its high SO2 selectivity over CO2 and air, showing an evident quenching effect, especially at low SO2 concentrations (0.1 bar of SO2). Time-resolved photoluminescence experiments suggest that host-guest SO2 interactions are associated with the turn-off effect.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"5 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interplay of Cu···Cu distance and coordination geometry as a factor affecting the quantum efficiency in dimeric copper(I) halide complexes with the derivatives of 4-pyrazolylpyrimidine-2-thiol","authors":"Sofia Skvortsova, Fyodor Verkhov, Elena B Nikolaenkova, Marianna I Rakhmanova, T. E. Kokina, Taisiya Sergeevna Sukhikh, Nikita Shekhovtsov, Mark B Bushuev","doi":"10.1039/d5dt00498e","DOIUrl":"https://doi.org/10.1039/d5dt00498e","url":null,"abstract":"Bicyclic pyrazolylpyrimidine compounds, 2-benzylthio-4-(3,5-dimethyl-1H-pyrazol-1-yl)pyrimidine (LH) and 2-benzylthio-4-(3,5-dimethyl-1H-pyrazol-1-yl)-6-methylpyrimidine (LMe) were synthesized and studied as ligands for the preparation of copper(I) halido complexes. In the solid state, LH and LMe demonstrate dual excitation-wavelength dependent emission, i.e. fluorescence at higher excitation energies and phosphorescence at lower excitation energies due to the presence of a heavy sulphur atom. The reactions of LH and LMe with CuBr and CuI afforded a series of centrosymmetric binuclear complexes of the [Cu2L2Hal2] type (L = LH, Hal = Br, I; L = LMe, Hal = I). The possibility of rotation of the benzylthio group relative to the pyrazolylpyrimidine core leads to the isolation of two polymorphic modifications of the copper(I) iodido complex with LH, which differ by the Cu···Cu distance by more than 0.2 Å (2.86 Å for [Cu2(LH)2I2] (form I) vs. 2.65 Å for [Cu2(LH)2I2] (form II)). The isolation of the [Cu2(LH)2I2] complex in two different crystalline forms made it possible to reveal the influence of a rarely explored factor, namely the change in the Cu···Cu distance in a single molecule, on the photoluminescence quantum efficiency. Two structural indices, τdim, which showcases the degree of merging of CuLHal monomers into the centrosymmetric [Cu2L2Hal2] dimers, and τplan, which characterises the degree of planarization of the N2CuHal2CuN2 unit, were introduced and used for combined experimental and theoretical analysis of the relation between the structure of the complexes and their luminescence. All complexes exhibit phosphorescence of the ligand-to-halide charge transfer (LXCT) character in the orange region. According to TDDFT calculations, an increase in the Cu···Cu distance facilitates structural rearrangement in the T1 state followed by a rapid decrease in the T1-S0 energy gap and subsequent non-radiative decay via electron-phonon coupling, which substantiates the higher photoluminescence quantum yield (PLQY) of [Cu2(LH)2I2] (form II) (Cu···Cu 2.65 Å) compared to [Cu2(LH)2I2] (form I) (Cu···Cu 2.86 Å).","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"73 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}