Synthetic Metals最新文献

{"title":"An investigation into effects of heteroatom-tailored donor engineering on thermoelectric performance of cyclopentadithiophene-based copolymers","authors":"Hui-Ping Li ,&nbsp;Cai-Yan Gao ,&nbsp;Yongjie Chen ,&nbsp;Xin-Heng Fan ,&nbsp;Ying-Feng Li ,&nbsp;Lian-Ming Yang","doi":"10.1016/j.synthmet.2024.117774","DOIUrl":"10.1016/j.synthmet.2024.117774","url":null,"abstract":"<div><div>The past years have witnessed the rapid development of organic conjugated polymer thermoelectric (TE) materials profiting from new combinations of popular donor and acceptor units as well as the exploration for novel classes of donors and/or acceptors. Nevertheless, the relationship between the structures and properties of those TE materials remains far less known due probably to the complexity of variables involved in this regard. Factually, minimizing structural variables is more helpful to gain an in-depth insight into the structure–property relationship. In this work, two D<img>A alternative copolymers were designed and synthesized by the Stille coupling reaction of the difluorinated benzotriazole acceptor unit with the N- or Si-substituted cyclopentadithiophene (CPD) donor unit, and systematically compared with the previously reported C-substituted analogue to reveal the influence of the heteroatom-tailored donor engineering on the molecular configuration and the physicochemical properties of the polymers. As a result, the FeCl₃-doped N-substituted polymer harvested a largest Seebeck coefficient of approximately 162.4 µV K⁻¹ as well as a highest electrical conductivity of about 12.8 S cm⁻¹, profiting primarily from a higher carrier mobility resulting from the good π<img>π stacking and a shallower HOMO level. As anticipated, a best power factor was achieved to be around 11.6 µW m⁻¹ K⁻², which is around one order of magnitude higher than that of the Si-substituted one, even much higher than that of C-substituted P(CPD-BTA-2F). This research is expected to afford an important guidance for purposefully designing the high-performance TE polymers in the future.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"309 ","pages":"Article 117774"},"PeriodicalIF":4.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photonic device application of a self-driven MXene based nanocomposite","authors":"Kadir Demirelli ,&nbsp;Ayşegül Dere ,&nbsp;Esra Barım ,&nbsp;Hülya Tuncer ,&nbsp;Fahrettin Yakuphanoğlu","doi":"10.1016/j.synthmet.2024.117770","DOIUrl":"10.1016/j.synthmet.2024.117770","url":null,"abstract":"<div><div>MXene based ternary composite photonic device was fabricated and characterized for the detection of different illuminations. The single chain polymer-cobalt phthallocyanine (SCP-CoPc) carrying metallised pthalocyanine macro ring was used as a polymer for the preparation of ternary composite. The Fourier Transform Infrared Spectroscopy (FT-IR), Transmission Electron Microscopy (TEM), Scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDX) were used to differentiate MXene/ZnO/SCP-CoPc composite prepared. The presence of Ti, C, O, Zn and Co elements in the structure of the composite was confirmed by EDX. The electrical properties of planar interdigital coated MXene/ZnO/SCP-CoPc (1:1:1 by wt) were investigated for photovoltaic application. The photo-generated carriers contribute to the current flow, and the linear photoconductivity behaviour in current measurements with different illuminations such as 20, 40, 60, 80 and 100 mW/cm² indicates the possible photo device use of MXene/ZnO/SCP-CoPc nanocomposite. The photocurrent increased from 20 mA/cm² to 100 mA/cm² with the light intensity at 0.5 V was tuned from 28 to 280 μA. The forbidden energy gap (Eg) value of the MXene/ZnO/SCP-CoPc ternary composite from optical measurements was found to be 2.36 eV. Experimental results showed that the presence of SCP-CoPc and ZnO (zinc oxide) in the ternary nanocomposite increased the ε' and ε\" values of MXene. The ε′ and ε″ of the ternary composite is 13.0, 26217 at 1 kHz and room temperature, respectively. The current-time results suggest that MXene based ternary composite photonic device is a self driven photodevice as the device can detect light without any external voltage bias.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"309 ","pages":"Article 117770"},"PeriodicalIF":4.0,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142560989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuning structural and optical properties of GO@Mn-doped Co3O4 hybrid nanocomposite by a facile synthesis","authors":"Khizar Hayat,&nbsp;Misbah Kiran,&nbsp;Muhammad Imran Yousaf","doi":"10.1016/j.synthmet.2024.117771","DOIUrl":"10.1016/j.synthmet.2024.117771","url":null,"abstract":"<div><div>Metal and metal oxide materials are mostly used to tune the optical characteristics. The optical and systemic effects of pure Cobalt Oxide (Co₃O₄) are examined by knocking out the dissimilar assemblage of Manganese (Mn) ions using the co-precipitation method. Graphene oxide (GO) reduces the optical band gap and enhances the effects of ethical Co₃O₄ and MnCo₃O₄ by hydrothermal procedure. The percentage of Mn over pure Co₃O₄ was 0.09 wt%, 0.18 wt%, 0.27 wt%, and GO doped over MnCo₃O₄ was 1 wt%. Remarkably, spinel-type cobalt oxide has two participation band gaps at 494 nm and 772 nm of nanocomposites which then shifted from 494 nm to 510 nm and 772 nm to 779 nm with the doping of GO. The result describes that the band gap was minimized from 1.76 eV to 1.59 eV respectively to accommodate the density of states by doping of Mn ions and GO. Conductivity and optical absorbance were also increased by doping assemblage of Mn ions and GO. XRD peaks show the FCC crystalline structure of Co₃O₄, and the GO peak disappeared for @MnCo₃O₄, indicating that GO was completely reduced to rGO during the synthesis process.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"309 ","pages":"Article 117771"},"PeriodicalIF":4.0,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quinoxaline based A-A type polymer donors for non-fullerene polymer solar cells","authors":"Xingjian Jiang,&nbsp;Ming Liu,&nbsp;Daizhe Wang,&nbsp;Yong Zhang","doi":"10.1016/j.synthmet.2024.117773","DOIUrl":"10.1016/j.synthmet.2024.117773","url":null,"abstract":"<div><div>In this study, we designed and synthesized two polymers, PDFBT-Qx and PDTBT-Qx, using the quinoxaline unit containing a long alkyl side chain as an unit and DTBT with or without fluorine atom as the other unit, respectively. The optical and electrochemical properties of the above two polymer donors were studied, and the optical bandgaps of PDTBT-Qx and PDFBT-Qx were 1.59 eV and 1.69 eV, respectively. The optical and electrochemical properties of the above two polymer donors were studied, and the HOMO and LUMO energy levels of PDTBT-Qx and PDFBT-Qx were obtained, and the energy levels of L8-BO were compared to explore the feasibility of the study. Polymer solar cells (PSCs) were prepared by blending with the non-fullerene acceptor material L8-BO. Finally, it was found that the power conversion efficiency (PCE) based on PDFBT-Qx:L8-BO and PDTBT-Qx:L8-BO was 7.2 % and 3.5 %, respectively. The systematic analysis of the optical properties, electronic energy level, charge transport, photovoltaic performance, charge dissociation efficiency and surface morphology of the material shows that the F atom can not only reduce the HOMO energy level of the donor material to improve the <em>V</em>_<em>OC</em> of the device due to its huge electronegativity. Furthermore, when the fluorine atom is introduced into the polymer skeleton, it can form weak intermolecular forces (F—S) with the sulfur atom in DTBT. This fluorination strategy can enhance the rigidity of the polymer and is known as “the molecular lock effect”. This phenomenon is conducive to adjusting the morphology of the active layer and ultimately improving the efficiency of the device.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"309 ","pages":"Article 117773"},"PeriodicalIF":4.0,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142530121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-voltage turn-on in blue organic light-emitting diodes","authors":"Hiroto Iwasaki ,&nbsp;Yutaka Majima ,&nbsp;Seiichiro Izawa","doi":"10.1016/j.synthmet.2024.117772","DOIUrl":"10.1016/j.synthmet.2024.117772","url":null,"abstract":"<div><div>The low-voltage operation of blue organic light-emitting diodes (OLEDs) is critical for reducing power consumption and improving device lifetime. This review briefly summarizes the history and origin of low-voltage electroluminescence and its realization in recent reports. In particular, upconversion OLEDs, which use the charge transfer state as an intermediate state to facilitate blue emission via triplet–triplet annihilation, present a promising solution. Thus, continued efforts aimed at reducing the driving voltage, including the exploration of new materials and device structures, are expected to significantly contribute to expanding the applications of blue OLEDs.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"309 ","pages":"Article 117772"},"PeriodicalIF":4.0,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142530128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Conducting polymers based composite materials towards anticorrosion applications","authors":"Yuqing Cao ,&nbsp;Ling Zhu ,&nbsp;Shuai Chen ,&nbsp;Jie Fang ,&nbsp;Lishan Liang ,&nbsp;Youliang Shen","doi":"10.1016/j.synthmet.2024.117769","DOIUrl":"10.1016/j.synthmet.2024.117769","url":null,"abstract":"<div><div>Metal based products are widely used, but they are susceptible to corrosion from environmental media, thereby affecting their performances and lifespan. Conducting polymers (CPs), as a series of important materials in organic electronics, have shown extensive corrosion prevention applications in fields such as ships and marine facilities, grounding system equipment, and military facilities, etc. Their development provides great safety, economic and social values, and has been one focus of academic and industrial circles. This is due to the unique reversible redox properties and tunability of CPs, which not only enable the rapid formation of passivation layer on the metal surface to prevent further corrosion from occurring. But at the same time, the coatings can be optimized according to different application requirements. This paper emphasizes the promising working mechanisms of CPs in anticorrosion field, introduces the commonly used methods for effectiveness evaluation, and also significantly discusses the aspects of their material system modulation and practical application. The existing challenges are also highlighted and future developments are prospected in detail. It is hoped to enlighten and drive scholars and technicians working in various cross-cutting areas covering anticorrosion, coatings, polymers, composites, and organic electronics, etc.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"309 ","pages":"Article 117769"},"PeriodicalIF":4.0,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142445313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of core-shell Si/C/graphene composite for high-performance lithium-ion battery anodes","authors":"Xiaoming Zhou,&nbsp;Yang Liu","doi":"10.1016/j.synthmet.2024.117768","DOIUrl":"10.1016/j.synthmet.2024.117768","url":null,"abstract":"<div><div>One of the important objectives for the development of enhanced lithium-ion batteries is developing high-performance silicon-based anodes with durable operational capability. Herein, a three-dimensional graphene-decorated core-shell Si/C composite is fabricated by the in-situ polymerization of organic pyrrole molecule and pyrolysis process, in which the melamine formaldehyde resin is subtly used as three-dimensional porous framework to offer abundant loading area for the uniform dispersion of active silicon nanoparticles. Meanwhile, the core-shell structure deriving from polypyrrole in the composite can effectively buffer the volume change of silicon ingredient and avoid the direct contact with the electrolyte during the cycling process, leading to the improved structural stability and electrochemical performance. The outermost layer of graphene nanosheets is designed to enhance the electrical conductivity of the electrode. As a result, the synthesized Si/C/graphene composite exhibits a high capacity and excellent cycling performance. This work reveals that combining a three-dimensional carbon substrate with a core-shell structure might be a promising solution for anode materials with obvious volume transformation.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"309 ","pages":"Article 117768"},"PeriodicalIF":4.0,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pivotal role of oligoanilines as regulator of polyaniline chain growth, helicity and overall morphology","authors":"Arindam Das,&nbsp;Indrani Chakraborti,&nbsp;Udayan Basak,&nbsp;Dhruba P. Chatterjee","doi":"10.1016/j.synthmet.2024.117766","DOIUrl":"10.1016/j.synthmet.2024.117766","url":null,"abstract":"<div><div>Polyaniline (PANI) has received significant attention as conductive polymer owing to its simple and cost effective method of synthesis, light weight, environmentally benign nature etc. Furthermore, it offers many attractive features such as high conductivity, availability in different oxidation states, doping-dedoping using simple acid/base chemistry etc. Nanostructured PANI has been found to be even more impactful as single material or as component in composites. The mechanism behind oxidative polymerization of aniline is well researched and it has been found that supramolecular organization of the oligoanilines produced during aniline polymerization, dictates the fate of the final PANI chains. Thus, by judicious control over the structure as well as number of the oligomers, via manipulation of the polymerization parameters or by externally added oligomers, a significant degree of control over the PANI chain lengths, helicity or their morphology may be exercised. Besides generating potential polymeric chains of various utility, the oligomers themselves have been reported to be pretty effective in various similar applications. There are numerous reports and many reviews which explore the synthesis and applications of PANI chains and the role of oligoanilines. The present report revisits the recent progress in the field and further highlight the key role of the oligoanilines in design, synthesis and applications of PANI either as bulk material or composite component.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"309 ","pages":"Article 117766"},"PeriodicalIF":4.0,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142530120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanochemical synthesis and characterization of poly[(aniline-co-N-(4-sulfophenyl) aniline] nanofibers and its nanocomposite with titanium dioxide nanoparticles and study of their efficiency in hybrid solar cell","authors":"Mazaher Yarmohamadi-Vasel ,&nbsp;Ali Reza Modarresi-Alam ,&nbsp;Meissam Noroozifar ,&nbsp;Sahar Shabzendedar ,&nbsp;Saeid Gholizadeh ,&nbsp;Edris Valadbeigi","doi":"10.1016/j.synthmet.2024.117767","DOIUrl":"10.1016/j.synthmet.2024.117767","url":null,"abstract":"<div><div>The advantages of polyaniline for application in new generation solar cells include its cost-effectiveness, environmentally friendly synthesis, remarkable stability, and the ability to modify the bandgap through the synthesis of its nanocomposites. But a challenge for its nanostructures is the limited solubility in non-toxic solvents, including water, which limits their processability in coating techniques. We overcame this challenge by synthesizing its copolymer with diphenylamine-4-sulfonate and its nanocomposite with titanium dioxide nanoparticles (TiO₂NPs). So through a solid-state and template-free technique and using sodium diphenylamine-4-sulfonate, aniline hydrochloride salt, TiO₂NPs, and FeCl₃∙6 H₂O as an oxidant, poly(N-(sulfophenyl)aniline) nanoflowers (<strong>PSANFLs</strong>), poly [(aniline-<em>co-N</em>-(4-sulfophenyl) aniline] nanofibers (<strong>PAPSANFs</strong>), poly(N-(sulfophenyl)aniline) nanofibers/titanium dioxide nanoparticles (<strong>PSANFs/TiO</strong>_{<strong>2</strong>}<strong>NPs</strong>), and poly (aniline-<em>co-N</em>-(4-sulfophenyl)aniline nanofibers/titanium dioxide nanoparticles (<strong>PAPSANFs/TiO</strong>_{<strong>2</strong>}<strong>NPs</strong>) were synthesized. Characterization of the synthesized samples was carried out through field emission scanning electron microscopy (FE-SEM), Fourier-transform infrared spectra, ultraviolet-visible spectra (UV-Vis), cyclic voltammetry (CV), and elemental analysis (CHNS). The FE-SEM images clearly illustrate that the synthesized samples are of nanoscale dimensions. The band gap values of 2.23 eV for <strong>PSANFs/TiO</strong>_{<strong>2</strong>}<strong>NPs</strong> and 1.96 eV for <strong>PAPSANFs/TiO</strong>_{<strong>2</strong>}<strong>NPs</strong> nanocomposites were determined through electrochemical calculations based on cyclic voltammetry curves, showcasing the complementary properties of n and p semiconductors. Using doctor blade method to prepare films from synthesized materials and the architectural pattern of <strong>ITO│TiO</strong>_{<strong>2</strong>}<strong>NPs│semiconductor sample│Al</strong>, all hybrid solar cells are fabricated. The I-V characteristics and power conversion efficiency (PCE) of the samples were examined and discussed. The PCE values for the four samples were found to be in the range of 0.20–0.82 %.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"309 ","pages":"Article 117767"},"PeriodicalIF":4.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Catalytic competence of gold clusters decorated yellow 2 G polymer composite film for voltammetric sensing of dopamine and nicotine in biological fluids","authors":"Lokman Liv","doi":"10.1016/j.synthmet.2024.117765","DOIUrl":"10.1016/j.synthmet.2024.117765","url":null,"abstract":"<div><div>A novel, simple, cost-effective, easy-to-prepare, and timesaving electrochemical sensor based on gold clusters decorated yellow 2 G polymer composite film was fabricated and comprehensively characterized for the determination of dopamine and nicotine in real samples. When gold clusters were modified on the yellow 2 G polymer film, a signal increase of 204 % for dopamine and 526 % for nicotine was obtained compared to the activated bare pencil graphite electrode. The signals at 90 mV for dopamine and 780 mV for nicotine were utilized as analytical responses. The fabricated platform serves noteworthy detection sensitivity values of 79.02<span><math><mrow><mspace></mspace><mi>μ</mi><mi>A</mi><mo>.</mo><msup><mrow><mi>μ</mi><mi>M</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup><mo>.</mo><msup><mrow><mi>cm</mi></mrow><mrow><mo>−</mo><mn>2</mn></mrow></msup></mrow></math></span> and 14.61<span><math><mrow><mspace></mspace><mi>μ</mi><mi>A</mi><mo>.</mo><msup><mrow><mi>μ</mi><mi>M</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup><mo>.</mo><msup><mrow><mi>cm</mi></mrow><mrow><mo>−</mo><mn>2</mn></mrow></msup></mrow></math></span> with a notable limit of detection values of 58.8 nM and 7.2 nM for dopamine and nicotine, respectively. The electrochemical method has linear ranges of 0.075–5 µM and 6–10 µM for dopamine alone, 0.01–10 µM and 12–25 µM for nicotine alone, 0.01–10 µM and 12–50 µM for nicotine in the presence of dopamine, 0.2–10 µM and 12–60 µM for dopamine in the presence of nicotine, and 0.4–2, 2–10 and 12–90 µM for dopamine and 0.2–8, 10–20 and 25–90 µM for nicotine at the increasing amounts of each substance. Moving forward, the developed method exhibits splendid accuracy and selectivity for determining dopamine and nicotine in biological samples of human saliva, serum, and urine.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"309 ","pages":"Article 117765"},"PeriodicalIF":4.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}