A novel alkali flame ionization detector (AFID) is introduced and characterized for use as an air sensor (i.e. without chromatographic separation) for organo-nitrogen compounds. Using a planar channeled quartz design, a simple, lightweight architecture for the portable device is presented, which yields sensitive and selective response toward nitrogen-containing analytes. For instance, the AFID sensor offers a detection limit of 30 pg N/s and a selectivity for nitrogen response over carbon of nearly 2 orders of magnitude. Further, nitrogen response is linear over the 1000-fold range of concentrations investigated. Relative to a flame photometric detector (FPD) device also used in a sensor mode, the AFID is observed to provide 100 times greater S/N values for nitrogen analytes with a nitrogen to carbon selectivity that is about 15 times larger. When using the AFID and FPD sensors in tandem, it is found that the response ratio of the simultaneous signals generated by each, produces characteristic values that more clearly identify the presence or absence of nitrogen in unknown analytes. The AFID sensor was used to detect organo-nitrogen analytes in several samples, and results indicate that it could be a useful approach for portable air sensing of nitrogen compounds.
{"title":"CHARACTERISTICS OF A NOVEL ALKALI FLAME IONIZATION DETECTOR AS AN AIR SENSOR FOR VOLATILE ORGANO-NITROGEN COMPOUNDS","authors":"Cole M. Mogenson, K. Thurbide","doi":"10.1139/cjc-2023-0051","DOIUrl":"https://doi.org/10.1139/cjc-2023-0051","url":null,"abstract":"A novel alkali flame ionization detector (AFID) is introduced and characterized for use as an air sensor (i.e. without chromatographic separation) for organo-nitrogen compounds. Using a planar channeled quartz design, a simple, lightweight architecture for the portable device is presented, which yields sensitive and selective response toward nitrogen-containing analytes. For instance, the AFID sensor offers a detection limit of 30 pg N/s and a selectivity for nitrogen response over carbon of nearly 2 orders of magnitude. Further, nitrogen response is linear over the 1000-fold range of concentrations investigated. Relative to a flame photometric detector (FPD) device also used in a sensor mode, the AFID is observed to provide 100 times greater S/N values for nitrogen analytes with a nitrogen to carbon selectivity that is about 15 times larger. When using the AFID and FPD sensors in tandem, it is found that the response ratio of the simultaneous signals generated by each, produces characteristic values that more clearly identify the presence or absence of nitrogen in unknown analytes. The AFID sensor was used to detect organo-nitrogen analytes in several samples, and results indicate that it could be a useful approach for portable air sensing of nitrogen compounds.","PeriodicalId":9420,"journal":{"name":"Canadian Journal of Chemistry","volume":"168 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73942896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The history of the emerging area of tools for managing research resources and the data produced from them is summarised from the perspective of two decades of use in teaching and research at one institution. These tools are a portal or electronic laboratory notebook for computational chemistry interfaced in one direction to a high-performance computing resource and in the other direction to a modern research data repository. The essential features of both these tools are described over two generations of each, with examples of student work cited as examples using persistent identifiers or PIDs, better known as DOIs. Underpinning this is the metadata describing the data being processed. The article outlines the evolution of managing such metadata-rich data and its progress towards what can now be summarised by the acronym FAIR data, itself enabling future emerging areas such as knowledge graphs.
{"title":"Teaching FAIR in computational chemistry: managing and publishing data using the twin tools of compute portals and repositories","authors":"H. Rzepa","doi":"10.1139/cjc-2022-0255","DOIUrl":"https://doi.org/10.1139/cjc-2022-0255","url":null,"abstract":"The history of the emerging area of tools for managing research resources and the data produced from them is summarised from the perspective of two decades of use in teaching and research at one institution. These tools are a portal or electronic laboratory notebook for computational chemistry interfaced in one direction to a high-performance computing resource and in the other direction to a modern research data repository. The essential features of both these tools are described over two generations of each, with examples of student work cited as examples using persistent identifiers or PIDs, better known as DOIs. Underpinning this is the metadata describing the data being processed. The article outlines the evolution of managing such metadata-rich data and its progress towards what can now be summarised by the acronym FAIR data, itself enabling future emerging areas such as knowledge graphs.","PeriodicalId":9420,"journal":{"name":"Canadian Journal of Chemistry","volume":"13 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84855021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhaoqing Yang, Qihang Yu, Anna Thinphang-nga, Xia Li
Inorganic-based solid-state lithium-sulfur batteries (SSLSBs) with high energy density and high safety have attracted wide attention as they are one of the most promising energy storage devices to meet future market requirements. However, the development of SSLSBs faces various challenges due to the unreasonable structural design in sulfur cathodes. Carbon is one of the indispensable components in sulfur cathodes. The rational design of carbon materials becomes an important strategy to address the challenges in sulfur cathodes. This review summarizes recent literature about the design and application of carbon materials for sulfur cathodes in inorganic-based SSLSBs. It starts with the introduction of different carbon materials from zero-dimensional (0D) to three-dimensional (3D) carbon materials. Particularly, this review paper highlights the structural design of carbon materials and the cathode fabrication methods, toward improving the conductivity of cathodes, buffering volume changes in cathodes, reducing interfacial resistance among cathode components, and increasing the mass loading of active materials. Finally, the existing challenges and promising solutions for carbon materials in the cathodes are discussed and proposed.
{"title":"Development of carbon materials for sulfur cathodes in inorganic-based solid-state lithium sulfur batteries","authors":"Zhaoqing Yang, Qihang Yu, Anna Thinphang-nga, Xia Li","doi":"10.1139/cjc-2023-0012","DOIUrl":"https://doi.org/10.1139/cjc-2023-0012","url":null,"abstract":"Inorganic-based solid-state lithium-sulfur batteries (SSLSBs) with high energy density and high safety have attracted wide attention as they are one of the most promising energy storage devices to meet future market requirements. However, the development of SSLSBs faces various challenges due to the unreasonable structural design in sulfur cathodes. Carbon is one of the indispensable components in sulfur cathodes. The rational design of carbon materials becomes an important strategy to address the challenges in sulfur cathodes. This review summarizes recent literature about the design and application of carbon materials for sulfur cathodes in inorganic-based SSLSBs. It starts with the introduction of different carbon materials from zero-dimensional (0D) to three-dimensional (3D) carbon materials. Particularly, this review paper highlights the structural design of carbon materials and the cathode fabrication methods, toward improving the conductivity of cathodes, buffering volume changes in cathodes, reducing interfacial resistance among cathode components, and increasing the mass loading of active materials. Finally, the existing challenges and promising solutions for carbon materials in the cathodes are discussed and proposed.","PeriodicalId":9420,"journal":{"name":"Canadian Journal of Chemistry","volume":"12 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73155133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Polymer-bonded explosives (PBXs) played a critical role in lethality and destruction as a vital military explosive in the world. Unfortunately, the current PBXs exhibit poor properties in safety performance and reliability for the weak interfacial surface, which cannot meet requirements of the high security and high reliability of weapons and ammunition in the harsh environment of modern battlefields. Herein, the neutral polymeric bonding agents (NPBAs) were successfully coated in the surface of 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (HMX) and proved to enhance the mechanical performance and reliability of PBXs. The SEM images indicated a slight aggregation of NPBAs coated in the HMX surface, the XRD spectra of HMX@NPBAs had an analogous spectrum of HMX, and the XPS spectrum confirmed that the NPBAs played a role on the surface of HMX by coating. Furthermore, the HMX coated with NPBAs had more excellent safety performance, thermal stability and mechanical properties. The strategy is helpful to strengthen the interaction between HMX and binder matrix, which provides a brilliant idea in modifying for the weak interfacial surface of energetic crystals.
{"title":"Preparation of HMX@NPBAs microparticles by coating process with improved mechanical properties, thermal stability and safety performance","authors":"Kanghui Jia, Peng Wu, Wu-li Qin, Yan-wu Yu, Suming Jing, Gui-min Cheng, Yu-cun Liu","doi":"10.1139/cjc-2022-0279","DOIUrl":"https://doi.org/10.1139/cjc-2022-0279","url":null,"abstract":"Polymer-bonded explosives (PBXs) played a critical role in lethality and destruction as a vital military explosive in the world. Unfortunately, the current PBXs exhibit poor properties in safety performance and reliability for the weak interfacial surface, which cannot meet requirements of the high security and high reliability of weapons and ammunition in the harsh environment of modern battlefields. Herein, the neutral polymeric bonding agents (NPBAs) were successfully coated in the surface of 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (HMX) and proved to enhance the mechanical performance and reliability of PBXs. The SEM images indicated a slight aggregation of NPBAs coated in the HMX surface, the XRD spectra of HMX@NPBAs had an analogous spectrum of HMX, and the XPS spectrum confirmed that the NPBAs played a role on the surface of HMX by coating. Furthermore, the HMX coated with NPBAs had more excellent safety performance, thermal stability and mechanical properties. The strategy is helpful to strengthen the interaction between HMX and binder matrix, which provides a brilliant idea in modifying for the weak interfacial surface of energetic crystals.","PeriodicalId":9420,"journal":{"name":"Canadian Journal of Chemistry","volume":"8 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87169490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Effective cysteine (Cys) detection is extremely important for early disease monitoring and diagnosis. In this study, a fluorescent probe (PHO) comprising 1,10-phenanthroline carboxaldehyde as the ligand and cobalt as the central ion was synthesized to detect Cys. The synthesized PHO exhibited enhanced fluorescence at 603 nm in the presence of Cys in HEPES buffer. Furthermore, the probe detected Cys concentrations as low as 0.6 μmol/L, demonstrating high sensitivity. Additionally, a strong linear relationship was established between the Cys concentration and normalized intensity of fluorescence. Importantly, the high selectivity was retained even in the presence of other interfering compounds. Consequently, this method can serve as a novel approach for detecting Cys in physiological systems.
{"title":"Development of a cobalt (II) and 1,10-phenanthroline carboxaldehyde-based fluorescent probe for the detection of cysteine","authors":"Haoshun Zhang, Peiyu Lan, Qinnan Yang, Ciling Li, Liting Zhao, Xinhuang Kang, Yubin Li","doi":"10.1139/cjc-2023-0009","DOIUrl":"https://doi.org/10.1139/cjc-2023-0009","url":null,"abstract":"Effective cysteine (Cys) detection is extremely important for early disease monitoring and diagnosis. In this study, a fluorescent probe (PHO) comprising 1,10-phenanthroline carboxaldehyde as the ligand and cobalt as the central ion was synthesized to detect Cys. The synthesized PHO exhibited enhanced fluorescence at 603 nm in the presence of Cys in HEPES buffer. Furthermore, the probe detected Cys concentrations as low as 0.6 μmol/L, demonstrating high sensitivity. Additionally, a strong linear relationship was established between the Cys concentration and normalized intensity of fluorescence. Importantly, the high selectivity was retained even in the presence of other interfering compounds. Consequently, this method can serve as a novel approach for detecting Cys in physiological systems.","PeriodicalId":9420,"journal":{"name":"Canadian Journal of Chemistry","volume":"221 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85893258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We question the use of rhombus silicate networks and rhombus oxide networks in some papers by the count of the included oxygen atoms and oxygen ions.
我们通过对含氧原子和氧离子的计数，对某些论文中使用的菱形硅酸盐网络和氧化菱形网络提出了质疑。
{"title":"A note on the use of rhombus silicate networks and rhombus oxide networks","authors":"W. Quapp","doi":"10.1139/cjc-2022-0300","DOIUrl":"https://doi.org/10.1139/cjc-2022-0300","url":null,"abstract":"We question the use of rhombus silicate networks and rhombus oxide networks in some papers by the count of the included oxygen atoms and oxygen ions.","PeriodicalId":9420,"journal":{"name":"Canadian Journal of Chemistry","volume":"10 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80213788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
(Bromoethynyl)benzene dissolved in hexane reacts with 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes) to produce the acetylenic amidinium salt [Ph-C≡C-IMes][Br]. Treatment of the bromide saltwithKPF6 results in the isolation of solid [Ph-C≡C-IMes][PF6].Both salts have been characterized spectroscopically and their structures determined using X-ray crystallography. Crystals of a hydrolysis product were also isolated from this reaction on one occasion and its structure is reported. This led us to explore the reactivity of the bromide salt further. It was found to react rapidly with sodium azide (NaN3), azidotrimethylsilane ((CH3)3Si-N3), cyanotrimethylsilane ((CH3)3Si-CN), and also, surprisingly, with IMes. All of the addition products have been characterized using X-ray crystallography. The results provide insight into the reactivity of acetylenic amidinium cations.
{"title":"Activation of an alkyne: the preparation, structure, and reactivity of an acetylenic amidinium ion derived from an N-heterocyclic carbene","authors":"Matthew J. J. Laprade, K. Robertson, J. Clyburne","doi":"10.1139/cjc-2023-0032","DOIUrl":"https://doi.org/10.1139/cjc-2023-0032","url":null,"abstract":"(Bromoethynyl)benzene dissolved in hexane reacts with 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes) to produce the acetylenic amidinium salt [Ph-C≡C-IMes][Br]. Treatment of the bromide saltwithKPF6 results in the isolation of solid [Ph-C≡C-IMes][PF6].Both salts have been characterized spectroscopically and their structures determined using X-ray crystallography. Crystals of a hydrolysis product were also isolated from this reaction on one occasion and its structure is reported. This led us to explore the reactivity of the bromide salt further. It was found to react rapidly with sodium azide (NaN3), azidotrimethylsilane ((CH3)3Si-N3), cyanotrimethylsilane ((CH3)3Si-CN), and also, surprisingly, with IMes. All of the addition products have been characterized using X-ray crystallography. The results provide insight into the reactivity of acetylenic amidinium cations.","PeriodicalId":9420,"journal":{"name":"Canadian Journal of Chemistry","volume":"43 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81604551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Crudden culture","authors":"S. MacQuarrie, C. Smith, M. Bruce","doi":"10.1139/cjc-2023-0023","DOIUrl":"https://doi.org/10.1139/cjc-2023-0023","url":null,"abstract":"","PeriodicalId":9420,"journal":{"name":"Canadian Journal of Chemistry","volume":"14 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77257150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper, we report the complex permittivity of aqueous microemulsions of N-dodecyltrimethylammonium bromide and styrene. The studies were carried out at 298.15 K while varying the styrene to surfactant concentration ratio, S0 (0.16 ≤ So ≤ 0.71) and the surfactant concentration, c (0.1032 ≤c (mol•dm-3 ) ≤ 0.7806). The frequencies ranged from 100 MHz to 89 GHz. An analysis of a particular solution is conducted over the temperature range of 278.15 to 328.15K in order to calculate the energy of the activation parameters. At 298.15 K, the spectra are fitted to a total of five Debye processes for concentration dependency series and three Debye processes for temperature dependence series. Br- surface and bulk diffusion surrounding the micelles best describes the two low frequency dispersions, at 100 MHz and 0.8 GHz, respectively. These mechanisms were examined using Grosse theory. The Maxwell-Wagner relaxation process is equivalent to high frequency micelle dispersion at 0.8 GHz. The thickness of the conducting shell of the micelle is determined by using the electrical conductivity of the particles and parameters taken from the Grosse theory, and the results are comparable to those from an examination of the Pauly and Schwan model. The Grosse model and solvent dispersion analysis were used to calculate the volume fractions of micelles. Both approaches were in agreement. The surfactant head group non-rotationally hydrates almost ~7±1 water molecules. Styrene addition allows for the non-rotationally bound accommodation of an additional ~7±1 water molecules.
{"title":"Dodecyltrimethylammonium bromide-styrene microemulsion dielectric investigation in aqueous media","authors":"N. Rohman, T. Mohiuddin, Imran Khan","doi":"10.1139/cjc-2022-0262","DOIUrl":"https://doi.org/10.1139/cjc-2022-0262","url":null,"abstract":"In this paper, we report the complex permittivity of aqueous microemulsions of N-dodecyltrimethylammonium bromide and styrene. The studies were carried out at 298.15 K while varying the styrene to surfactant concentration ratio, S0 (0.16 ≤ So ≤ 0.71) and the surfactant concentration, c (0.1032 ≤c (mol•dm-3 ) ≤ 0.7806). The frequencies ranged from 100 MHz to 89 GHz. An analysis of a particular solution is conducted over the temperature range of 278.15 to 328.15K in order to calculate the energy of the activation parameters. At 298.15 K, the spectra are fitted to a total of five Debye processes for concentration dependency series and three Debye processes for temperature dependence series. Br- surface and bulk diffusion surrounding the micelles best describes the two low frequency dispersions, at 100 MHz and 0.8 GHz, respectively. These mechanisms were examined using Grosse theory. The Maxwell-Wagner relaxation process is equivalent to high frequency micelle dispersion at 0.8 GHz. The thickness of the conducting shell of the micelle is determined by using the electrical conductivity of the particles and parameters taken from the Grosse theory, and the results are comparable to those from an examination of the Pauly and Schwan model. The Grosse model and solvent dispersion analysis were used to calculate the volume fractions of micelles. Both approaches were in agreement. The surfactant head group non-rotationally hydrates almost ~7±1 water molecules. Styrene addition allows for the non-rotationally bound accommodation of an additional ~7±1 water molecules.","PeriodicalId":9420,"journal":{"name":"Canadian Journal of Chemistry","volume":"86 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80875857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We present the Serestipy software as an add-on to the quantum-chemistry program Serenity. Serestipy is a representational-state transfer-oriented application programming interface written in the Python programming language enabling parallel subsystem density-functional theory calculations. We introduce approximate strategies in the context of frozen-density embedding time-dependent density-functional theory to make parallel large-scale excited-state calculations feasible. Their accuracy is carefully benchmarked with calculations for a model system consisting of porphine rings. We apply this framework to a nanotube made up of those porphine rings consisting of 12 160 atoms (or 264 960 basis functions) and obtain its electronic structure and absorption spectrum in less than a day of computational time.
{"title":"Massively parallel fragment-based quantum chemistry for large molecular systems: the serestipy software","authors":"P. Eschenbach, Niklas Niemeyer, J. Neugebauer","doi":"10.1139/cjc-2022-0243","DOIUrl":"https://doi.org/10.1139/cjc-2022-0243","url":null,"abstract":"We present the Serestipy software as an add-on to the quantum-chemistry program Serenity. Serestipy is a representational-state transfer-oriented application programming interface written in the Python programming language enabling parallel subsystem density-functional theory calculations. We introduce approximate strategies in the context of frozen-density embedding time-dependent density-functional theory to make parallel large-scale excited-state calculations feasible. Their accuracy is carefully benchmarked with calculations for a model system consisting of porphine rings. We apply this framework to a nanotube made up of those porphine rings consisting of 12 160 atoms (or 264 960 basis functions) and obtain its electronic structure and absorption spectrum in less than a day of computational time.","PeriodicalId":9420,"journal":{"name":"Canadian Journal of Chemistry","volume":"211 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78168366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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