Pub Date : 2016-05-03DOI: 10.1080/15533174.2014.989575
N. Rostamizadeh, A. Khajeh-Amiri, H. Moghanian
MgO/Al2O3 catalyzes the synthesis of azlactone derivatives from condensation reaction of aldehydes (or ketones) with hippuric acid and acetic anhydride as a dehydrating agent under microwave irradiation. The low toxicity, low cost, ease of handling, and high activity of MgO/Al2O3 make this procedure particularly attractive. Also, this catalyst can be easily recovered by decant and can be reused for this condensation five times in succession without considerable loss of its catalytic activity.
{"title":"Microwave-Assisted Erlenmeyer Synthesis of Azlactones Catalyzed by MgO/Al2O3 Under Solvent-Free Conditions","authors":"N. Rostamizadeh, A. Khajeh-Amiri, H. Moghanian","doi":"10.1080/15533174.2014.989575","DOIUrl":"https://doi.org/10.1080/15533174.2014.989575","url":null,"abstract":"MgO/Al2O3 catalyzes the synthesis of azlactone derivatives from condensation reaction of aldehydes (or ketones) with hippuric acid and acetic anhydride as a dehydrating agent under microwave irradiation. The low toxicity, low cost, ease of handling, and high activity of MgO/Al2O3 make this procedure particularly attractive. Also, this catalyst can be easily recovered by decant and can be reused for this condensation five times in succession without considerable loss of its catalytic activity.","PeriodicalId":22118,"journal":{"name":"Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86475344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-05-03DOI: 10.1080/15533174.2014.989576
Wenyao Yang, Jianhua Xu, Y. Mao, Yajie Yang, Yadong Jiang
Detection of volatile organic compounds (VOCs) by electronic optical nose based on sensing thin films is becoming more interesting in modern industry and daily life. The thin films of zinc-porphyrin and zinc-phthalocyanine fabricated by Langmuir-Blodgett (LB) technique onto quartz substrates have been used as sensing elements for electronic optical nose application. Absorption spectra range of the both organic elements in a chloroform solution and the LB solid state thin films were acquired by using a UV-1700 spectrometer. As an electronic gas sensing test, the optical absorbance performance after the exposure of LB films to different VOCs, and dry air was investigated. The results indicated that the ZnTPP and ZnPc LB films showed different gas sensitivity due to different molecule structure. Besides, a 2 × 1 colorimetric array is fabricated by immobilizing sensing thin film on a silica substrate, and the vapor molecules of pyridine and methanol can be easily detected.
{"title":"Detection of Volatile Organic Compounds Using Langmuir-Blodgett Films of Zinc-Porphyrin and Zinc-Phthalocyanine","authors":"Wenyao Yang, Jianhua Xu, Y. Mao, Yajie Yang, Yadong Jiang","doi":"10.1080/15533174.2014.989576","DOIUrl":"https://doi.org/10.1080/15533174.2014.989576","url":null,"abstract":"Detection of volatile organic compounds (VOCs) by electronic optical nose based on sensing thin films is becoming more interesting in modern industry and daily life. The thin films of zinc-porphyrin and zinc-phthalocyanine fabricated by Langmuir-Blodgett (LB) technique onto quartz substrates have been used as sensing elements for electronic optical nose application. Absorption spectra range of the both organic elements in a chloroform solution and the LB solid state thin films were acquired by using a UV-1700 spectrometer. As an electronic gas sensing test, the optical absorbance performance after the exposure of LB films to different VOCs, and dry air was investigated. The results indicated that the ZnTPP and ZnPc LB films showed different gas sensitivity due to different molecule structure. Besides, a 2 × 1 colorimetric array is fabricated by immobilizing sensing thin film on a silica substrate, and the vapor molecules of pyridine and methanol can be easily detected.","PeriodicalId":22118,"journal":{"name":"Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79465019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-05-03DOI: 10.1080/15533174.2014.989579
A. M. Yusof, S. Yusan
The authors describe herein a new process for the synthesis of nanoselenium–supported MCM-41 hybrid material. Selenium nanoparticles were synthesized via chemical reduction method that this method is capable of producing spherical selenium nanoparticles of size 20 to 80 nm, under ambient conditions, and covalently bonded to MCM-41 framework by 3-(triethoxysilyl)-propylamine (APTES). The structures, morphology and size of the products were investigated by several characterization techniques such as XRD, SEM, TEM, FT-IR, UV–vis/DRS, Raman spectroscopy, and N2 adsorption–desorption isotherms method. These results demonstrated that Se-MCM-41 is a promising candidate for biosensor, adsorbent, or catalyst.
{"title":"Synthesis and Structural Properties of Nanoselenium-Supported MCM-41 Material","authors":"A. M. Yusof, S. Yusan","doi":"10.1080/15533174.2014.989579","DOIUrl":"https://doi.org/10.1080/15533174.2014.989579","url":null,"abstract":"The authors describe herein a new process for the synthesis of nanoselenium–supported MCM-41 hybrid material. Selenium nanoparticles were synthesized via chemical reduction method that this method is capable of producing spherical selenium nanoparticles of size 20 to 80 nm, under ambient conditions, and covalently bonded to MCM-41 framework by 3-(triethoxysilyl)-propylamine (APTES). The structures, morphology and size of the products were investigated by several characterization techniques such as XRD, SEM, TEM, FT-IR, UV–vis/DRS, Raman spectroscopy, and N2 adsorption–desorption isotherms method. These results demonstrated that Se-MCM-41 is a promising candidate for biosensor, adsorbent, or catalyst.","PeriodicalId":22118,"journal":{"name":"Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88594860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-05-03DOI: 10.1080/15533174.2014.989573
M. Kumar, K. Rajanna, P. Venkanna, M. Venkateswarlu, V. Sudhakar Chary
An efficient method for decarboxylative bromination of cinnamic acids (α,β-unsaturated carboxylic acids or 3-arylpropenoic acids) was achieved under relatively mild conditions using Vilsmeier-Haack reagent and KBr in acetonitrile media. Vilsmeier-Haack reagent is prepared by using 1:1 ratio of oxychloride (SOCl2 or POCl3) and DMF under chilled condition. Ultrasonically assisted reactions underwent smoothly with highly significant rate enhancements and afforded bromostyrenes as products in very good yields even though the reactions were too sluggish.
{"title":"Ultrasonically Assisted Decarboxylative Bromination of α,β-Unsaturated Carboxylic Acids Under Vilsmeier-Haack Conditions","authors":"M. Kumar, K. Rajanna, P. Venkanna, M. Venkateswarlu, V. Sudhakar Chary","doi":"10.1080/15533174.2014.989573","DOIUrl":"https://doi.org/10.1080/15533174.2014.989573","url":null,"abstract":"An efficient method for decarboxylative bromination of cinnamic acids (α,β-unsaturated carboxylic acids or 3-arylpropenoic acids) was achieved under relatively mild conditions using Vilsmeier-Haack reagent and KBr in acetonitrile media. Vilsmeier-Haack reagent is prepared by using 1:1 ratio of oxychloride (SOCl2 or POCl3) and DMF under chilled condition. Ultrasonically assisted reactions underwent smoothly with highly significant rate enhancements and afforded bromostyrenes as products in very good yields even though the reactions were too sluggish.","PeriodicalId":22118,"journal":{"name":"Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84047621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-05-03DOI: 10.1080/15533174.2014.988824
Shi-Zhao Kang, Lin Bo, Xiangqing Li, A. Mu
In the present work, Fe3O4/carbon nanocomposite was prepared using metal organic framework as a precursor. Meanwhile, the electrochemical performance of the Fe3O4/carbon nanocomposite, as an anode material, was evaluated by galvanostatic discharge-charge tests. The experimental results indicate that the as-prepared sample is a porous aggregation of Fe3O4 nanoparticles interconnected with amorphorous carbon layer, and the mean diameter of Fe3O4 nanoparticles is approximately 30 nm. Moreover, it is also observed that the Fe3O4/carbon nanocomposite possesses a high initial discharge capacity of 1586 mA h g−1.
本文以金属有机骨架为前驱体制备了Fe3O4/碳纳米复合材料。同时，通过恒流充放电试验对Fe3O4/碳纳米复合材料作为负极材料的电化学性能进行了评价。实验结果表明，制备的样品为Fe3O4纳米颗粒与非晶碳层相互连接的多孔聚集体，Fe3O4纳米颗粒的平均直径约为30 nm。此外，还观察到Fe3O4/碳纳米复合材料具有1586 mA h g−1的高初始放电容量。
{"title":"Facile Preparation of Fe3O4/Carbon Nanocomposite With High Lithium Storage Capacity","authors":"Shi-Zhao Kang, Lin Bo, Xiangqing Li, A. Mu","doi":"10.1080/15533174.2014.988824","DOIUrl":"https://doi.org/10.1080/15533174.2014.988824","url":null,"abstract":"In the present work, Fe3O4/carbon nanocomposite was prepared using metal organic framework as a precursor. Meanwhile, the electrochemical performance of the Fe3O4/carbon nanocomposite, as an anode material, was evaluated by galvanostatic discharge-charge tests. The experimental results indicate that the as-prepared sample is a porous aggregation of Fe3O4 nanoparticles interconnected with amorphorous carbon layer, and the mean diameter of Fe3O4 nanoparticles is approximately 30 nm. Moreover, it is also observed that the Fe3O4/carbon nanocomposite possesses a high initial discharge capacity of 1586 mA h g−1.","PeriodicalId":22118,"journal":{"name":"Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82006895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-05-03DOI: 10.1080/15533174.2014.988827
H. S. Pajaie, M. Taghizadeh
Nanosized SAPO-34 was synthesized by means of ultrasonic and microwave-assisted aging process. Synthesized samples were characterized by BET, XRD, and FE-SEM techniques. Applying the response surface methodology (RSM) based on Box–Behnken statistical design, the effects of microwave (MW), ultrasonic (US) aging time, and hydrothermal time on the preparation of SAPO-34 with respect to crystallinity of final product phase were investigated. The results showed that the interaction between US and MW aging time had the main positive effect on the crystallinity and the crystallization was accomplished in a significantly reduced time.
{"title":"Investigating the Effect of Ultrasonic and Microwave-Assisted Aging on the Synthesis of Nanosized SAPO-34 Molecular Sieves Using Box–Behnken Experimental Design","authors":"H. S. Pajaie, M. Taghizadeh","doi":"10.1080/15533174.2014.988827","DOIUrl":"https://doi.org/10.1080/15533174.2014.988827","url":null,"abstract":"Nanosized SAPO-34 was synthesized by means of ultrasonic and microwave-assisted aging process. Synthesized samples were characterized by BET, XRD, and FE-SEM techniques. Applying the response surface methodology (RSM) based on Box–Behnken statistical design, the effects of microwave (MW), ultrasonic (US) aging time, and hydrothermal time on the preparation of SAPO-34 with respect to crystallinity of final product phase were investigated. The results showed that the interaction between US and MW aging time had the main positive effect on the crystallinity and the crystallization was accomplished in a significantly reduced time.","PeriodicalId":22118,"journal":{"name":"Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88769092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-05-03DOI: 10.1080/15533174.2014.989590
Q. Fang, Jianting Tang, Hua Zou, Tiejun Cai, Q. Deng
N-doped mesoporous TiO2 was successfully prepared by using CH3NO2 as the nitrogen source and P123 as template. The materials were characterized by TEM, N2 sorption, XRD, XPS, UV-vis DRS, and TG-DTA techniques. The photocatalytic activity of N-doped TiO2 was tested in elimination of gaseous methanol, formaldehyde, and BTX (benzene, toluene and xylene). The obtained N-doped mesoporous TiO2 materials have better photocatalytic activity than commercial photocatalyst (Degussa P25). Moreover, the N-doped mesoporous TiO2 photocatalysts are easy to prepare and have stable performance, high photocatalytic activity and long lifetime.
{"title":"Preparation of N-Doped Mesoporous TiO2 Using Nitromethane as Nitrogen Source and Their High Photocatalytic Performance","authors":"Q. Fang, Jianting Tang, Hua Zou, Tiejun Cai, Q. Deng","doi":"10.1080/15533174.2014.989590","DOIUrl":"https://doi.org/10.1080/15533174.2014.989590","url":null,"abstract":"N-doped mesoporous TiO2 was successfully prepared by using CH3NO2 as the nitrogen source and P123 as template. The materials were characterized by TEM, N2 sorption, XRD, XPS, UV-vis DRS, and TG-DTA techniques. The photocatalytic activity of N-doped TiO2 was tested in elimination of gaseous methanol, formaldehyde, and BTX (benzene, toluene and xylene). The obtained N-doped mesoporous TiO2 materials have better photocatalytic activity than commercial photocatalyst (Degussa P25). Moreover, the N-doped mesoporous TiO2 photocatalysts are easy to prepare and have stable performance, high photocatalytic activity and long lifetime.","PeriodicalId":22118,"journal":{"name":"Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77957712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-05-03DOI: 10.1080/15533174.2014.989582
Qi Chen, Huijie Lun, Yong-Hong Li, Shu Li, Bei-Bei Li, Xudong Zhang, Yamin Li
A new coordination polymer [Ag3(1,2,4-btc)]n (1) (1,2,4-H3btc = 1,2,4-benzenetricarboxylate) has been synthesized by hydrothermal method and characterized by X-ray single crystal diffraction, elemental analysis, IR spectrum, and TGA. Compound 1 exhibits a 3D network consisting of the 2D layer connected by the ligand 1,2,4-btc3−, which adopts a new coordination mode. Moreover, blue fluorescence at 480 nm emission was observed under 320 nm excitation.
{"title":"Hydrothermal Synthesis and Structural Characterization of a Three-Dimensional Coordination Polymer on Ag(I)","authors":"Qi Chen, Huijie Lun, Yong-Hong Li, Shu Li, Bei-Bei Li, Xudong Zhang, Yamin Li","doi":"10.1080/15533174.2014.989582","DOIUrl":"https://doi.org/10.1080/15533174.2014.989582","url":null,"abstract":"A new coordination polymer [Ag3(1,2,4-btc)]n (1) (1,2,4-H3btc = 1,2,4-benzenetricarboxylate) has been synthesized by hydrothermal method and characterized by X-ray single crystal diffraction, elemental analysis, IR spectrum, and TGA. Compound 1 exhibits a 3D network consisting of the 2D layer connected by the ligand 1,2,4-btc3−, which adopts a new coordination mode. Moreover, blue fluorescence at 480 nm emission was observed under 320 nm excitation.","PeriodicalId":22118,"journal":{"name":"Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82740261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-05-03DOI: 10.1080/15533174.2014.989588
Jin Huang, Qin Wei, W. Zhang, Zhong Zhang, Yong-Zhi Liao
Treatment of two kinds of unsymmetrical bis-heterocyclic ligands bearing benzimidazole moiety, 2-[2-(1,2,4-triazole-1-yl)ethyl]-1H-benzimidazole (L1) and 2-[2-(1,2,3-benzotriazole-1-yl)ethyl]-1H-benzimidazole (L2), with Co(II) chloride, resulted in two new complexes, [Co3(L2)4Cl6]·2H2O (1) and [Co(L1)Cl2]2 (2), with different aggregating patterns. Two complexes were characterized by single-crystal X-ray determinations. In the solid state, L1 assumes an anti conformation in compound 1, whereas L2 exists as a gauche conformer in compound 2. Complex 1 reveals a 1-D double-stranded chain structure consisting of both octahedrally and tetrahedrally coordinated Co(II) ions. Complex 2 is a mononuclear tetrahedral Co(II) species, which was hydrogen bonded with each other to give a 1-D linear chain.
{"title":"Synthesis and Crystal Structures of Co(II) Complexes Derived From Two Unsymmetrical Bis-Heterocyclic Ligands With Benzimidazole Moiety","authors":"Jin Huang, Qin Wei, W. Zhang, Zhong Zhang, Yong-Zhi Liao","doi":"10.1080/15533174.2014.989588","DOIUrl":"https://doi.org/10.1080/15533174.2014.989588","url":null,"abstract":"Treatment of two kinds of unsymmetrical bis-heterocyclic ligands bearing benzimidazole moiety, 2-[2-(1,2,4-triazole-1-yl)ethyl]-1H-benzimidazole (L1) and 2-[2-(1,2,3-benzotriazole-1-yl)ethyl]-1H-benzimidazole (L2), with Co(II) chloride, resulted in two new complexes, [Co3(L2)4Cl6]·2H2O (1) and [Co(L1)Cl2]2 (2), with different aggregating patterns. Two complexes were characterized by single-crystal X-ray determinations. In the solid state, L1 assumes an anti conformation in compound 1, whereas L2 exists as a gauche conformer in compound 2. Complex 1 reveals a 1-D double-stranded chain structure consisting of both octahedrally and tetrahedrally coordinated Co(II) ions. Complex 2 is a mononuclear tetrahedral Co(II) species, which was hydrogen bonded with each other to give a 1-D linear chain.","PeriodicalId":22118,"journal":{"name":"Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72971039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-05-03DOI: 10.1080/15533174.2014.988817
M. Karimi, M. Ranjbar
In this experimental work, the authors synthesized calcium carbonate nanostructures with different morphologies via simple hydrothermal method. Different parameters such as hydrothermal time and surfactant effects were investigated on product size and morphology. SEM images were served for determination of products morphology. XRD pattern was also used for investigation of crystallity and crystal size of as-synthesized product.
{"title":"Hydrothermal Synthesis and Characterization of CaCo3 Nanostructure","authors":"M. Karimi, M. Ranjbar","doi":"10.1080/15533174.2014.988817","DOIUrl":"https://doi.org/10.1080/15533174.2014.988817","url":null,"abstract":"In this experimental work, the authors synthesized calcium carbonate nanostructures with different morphologies via simple hydrothermal method. Different parameters such as hydrothermal time and surfactant effects were investigated on product size and morphology. SEM images were served for determination of products morphology. XRD pattern was also used for investigation of crystallity and crystal size of as-synthesized product.","PeriodicalId":22118,"journal":{"name":"Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81223808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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