Macromolecular Chemistry and Physics最新文献_第9页

Effect of NaClO4 Dopant on Chemical Bond and Electrochemical Characteristic of Benzoyl Kappa-Carrageenan Gel Biopolymer Electrolyte NaClO4 掺杂剂对苯甲酰基卡帕卡拉胶凝胶生物聚合物电解质化学键和电化学特性的影响

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-06-06 DOI: 10.1002/macp.202400062

Nor Rahafza Abdul Manap, Norsyabila Shrgawi, Intan Juliana Shamsudin, Hussein Hanibah, Norherdawati Kasim, Siti Aminah Mohd Noor, Priyatharshiny Pongali, Norli Abdullah, Nurul Hazwani Aminuddin Rosli

{"title":"Effect of NaClO4 Dopant on Chemical Bond and Electrochemical Characteristic of Benzoyl Kappa-Carrageenan Gel Biopolymer Electrolyte","authors":"Nor Rahafza Abdul Manap, Norsyabila Shrgawi, Intan Juliana Shamsudin, Hussein Hanibah, Norherdawati Kasim, Siti Aminah Mohd Noor, Priyatharshiny Pongali, Norli Abdullah, Nurul Hazwani Aminuddin Rosli","doi":"10.1002/macp.202400062","DOIUrl":"10.1002/macp.202400062","url":null,"abstract":"Gel biopolymer electrolytes based on benzoyl kappa-carrageenan (Bz-κcar) as polymer host and sodium perchlorate (NaClO4) as dopants are successfully produced. The concentration of NaClO4 is varied from 0.5 to 3.0 wt% to investigate its effects on the chemical bonds and electrochemical characteristic of electrolytes. Characterizations are performed by Fourier-transform infrared spectroscopy (FTIR) and electrochemical impedance analysis (EIS), linear sweep voltammetry, and transference number measurement. Significant changes in the FTIR spectra are detected, which indicate chemical interactions between Bz-ƙcar and NaClO4. The ionic conductivity (σ) of the gel electrolytes increases with higher concentrations of NaClO4, suggesting that NaClO4 is an effective charge carrier in the system. The highest σ of the gel electrolyte attained at ambient temperature is 1.29 × 10−3 S cm−1. The temperature dependence of conductivity is Arrhenian in the studied temperature range and achieves an elevated σ of 7.90 × 10−3 S cm−1 at 373 K with small values in the activation energy (Ea) observed in all the prepared electrolytes. Electrochemical stability of 1.50 V achieves the highest conducting electrolyte by means of linear sweep voltammetry. Transference number measurement confirms that ions predominate the conduction of electrolyte with 0.85 ion transference number.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"225 15","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141380651","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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Environmentally Degradable Polymers Incorporating Stimuli-Triggered Cleavable Linkages toward Industrial Materials 含有刺激触发的可裂解连接的环境可降解聚合物，迈向工业材料之路

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-06-06 DOI: 10.1002/macp.202400026

Hideaki Ono, Shinji Tanaka, Masaru Yoshida

{"title":"Environmentally Degradable Polymers Incorporating Stimuli-Triggered Cleavable Linkages toward Industrial Materials","authors":"Hideaki Ono, Shinji Tanaka, Masaru Yoshida","doi":"10.1002/macp.202400026","DOIUrl":"10.1002/macp.202400026","url":null,"abstract":"Plastics designed to degrade upon exposure to ambient stimuli after use are emerging as promising alternatives to conventional plastics, considering environmental pollution. The so-called “biodegradable polymers,” which can be degraded by enzymes or microbes, are the most reliable biodegradable polymers, and considerable effort is devoted to their practical application. Several other examples are also developed for the cleavage of chemical bonds in macromolecules, as one part of a vast variety of “stimuli-responsive polymers,” especially for biomedical applications. These chemical insights provide a design concept that can even be extended to plastic materials. Here, stimuli-cleavable linkages, drawing from the chemical insights cultivated in biomedical fields, intended for application in degradable plastics, are outlined. As stimuli for polymer degradation, pH changes, photoirradiation, and redox conditions are selected because polymers released in natural environments may inadvertently be exposed to these stimuli. The degradation pathways are grouped into five categories: 1) stimuli-cleavable linkages, 2) self-amplifying, 3) self-immolative, 4) chain shattering, and 5) double responsive. The classification and organization of the stimuli-cleavable linkages provide insights for designing new, degradable polymers.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"225 15","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141377288","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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The Influence of the Methylene Blue Dye on the Rate and the Mechanism of the Oxidative Polymerization of Aniline 亚甲基蓝染料对苯胺氧化聚合速率和机理的影响

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-06-05 DOI: 10.1002/macp.202400082

Yaroslav Mezhuev, Mikhail Motyakin, Igor Vorobev, Irina Ionova, Oleg Baranov, Raisa Dvorikova, Aristidis Tsatsakis, Anastasia Soldatova, Alina Svistunova

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Facile Modification of Propiolated Castor Oil via Nucleophilic Thiol‐Yne Click Reactions 通过亲核硫醇-炔单击反应对丙二醇化蓖麻油进行简便改性

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-06-05 DOI: 10.1002/macp.202400146

Damla Kalayci, Emre Akar, Serter Luleburgaz, E. Çakmakçi, U. Gunay, Volkan Kumbaraci, H. Durmaz, Umit Tunca

{"title":"Facile Modification of Propiolated Castor Oil via Nucleophilic Thiol‐Yne Click Reactions","authors":"Damla Kalayci, Emre Akar, Serter Luleburgaz, E. Çakmakçi, U. Gunay, Volkan Kumbaraci, H. Durmaz, Umit Tunca","doi":"10.1002/macp.202400146","DOIUrl":"https://doi.org/10.1002/macp.202400146","url":null,"abstract":"The combination of modern click protocols and bio‐based building blocks is a great step towards energy‐efficient, sustainable, and tailorable polymer production. Herein, we chose thiol‐Michael addition (thiol‐yne) reactions from the toolbox of click chemistry protocols and used propiolated castor oil (PCO), a vegetable oil derivative, as the bio‐based building block for the facile functionalization of PCO with various thiols. In addition to the functionalization of PCO, hyperbranched and crosslinked polymers were also prepared. The thiol‐yne click functionalization reactions of the PCO were conducted at room temperature within 5 minutes and in the presence of an organic catalyst. The modifications were conducted in 2‐MeTHF. The yields were found to change between 80–99% depending on the type of the thiol compound. The effect of various organic catalysts was investigated, and 1,8‐diazabicyclo(5.4.0)undec‐7‐ene (DBU) was found to be the most effective catalyst for the thiol‐yne modification reactions. The hyperbranched polymer reached 23.8 kDa (Mw) within 5 minutes. The thermosets displayed low glass transition temperatures (Tgs) between ‐46 °C and ‐26 °C. The findings of this paper open up new horizons for polymer researchers who work in the field of sustainable polymers and click chemistry and the presented idea here is appealing because it offers a potential strategy for fast, reliable, modular, and functional macromolecule preparation from renewable vegetable oils.This article is protected by copyright. All rights reserved","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"328 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141386339","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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Design and Construction of Furan and Thiophene‐Based Salicyladazine Bisbenzoxazine Resins with High Thermal Stability and Tunable Surface Properties 设计和构建具有高热稳定性和可调表面特性的呋喃和噻吩基水杨醛双苯并恶嗪树脂

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-05-31 DOI: 10.1002/macp.202400091

Yang‐Chin Kao, Mohamed Gamal Mohamed, Chia‐Husan Chiang, Shiao‐Wei Kuo

{"title":"Design and Construction of Furan and Thiophene‐Based Salicyladazine Bisbenzoxazine Resins with High Thermal Stability and Tunable Surface Properties","authors":"Yang‐Chin Kao, Mohamed Gamal Mohamed, Chia‐Husan Chiang, Shiao‐Wei Kuo","doi":"10.1002/macp.202400091","DOIUrl":"https://doi.org/10.1002/macp.202400091","url":null,"abstract":"We synthesized two disubstituted bisbenzoxazine monomers using furan (Fa) and thiophene (Th) derivatives: bis((3‐(furan‐2‐ylmethyl)‐7‐ol‐3,4‐dihydro‐2H‐benzo[e][1,3] oxazin‐6‐yl)methylene)hydrazine (BAZ‐Fa‐BZ) and bis((3‐(thiophen‐2‐ylmethyl)‐7‐ol‐3,4‐dihydro‐2H‐benzo[e][1,3] oxazin‐6‐yl)methylene)hydrazine (BAZ‐Th‐BZ). These monomers were synthesized via Mannich condensation of salicylaldazine (BAZ‐4OH) and paraformaldehyde (CH2O) with furfurylamine (Fa‐NH2) and thiophene‐2‐methenamine (Th‐NH2), respectively. The chemical structures of BAZ‐Fa‐BZ and BAZ‐Th‐BZ were affirmed using FT‐IR and NMR; respectively. A thorough investigation of the thermal polymerization process of BAZ‐Fa‐BZ and BAZ‐Th‐BZ was conducted using DSC, TGA, and in situ FT‐IR spectra (ranging from 25 to 250 °C). Poly(BAZ‐Fa‐BZ) exhibited superior thermal properties with a thermal decomposition temperature (Td10) of 402 °C and a char yield of 58 wt.% after thermal treatment at 250 °C, along with a lower surface free energy of 28.9 mJ m−2 compared to poly(BAZ‐Th‐BZ) (Td10 = 359 °C, char yield = 48 wt.%, and surface free energy = 34.1 mJ m−2). Additionally, poly(BAZ‐Th‐BZ/BAZ‐Fa‐BZ) blend with a ratio of 1/3 after thermal curing at 250 °C demonstrated the highest Td10 of 395 °C and a char yield of 60 wt.%. Photoluminescence (PL) measurements conducted in the solid state revealed that BAZ‐Th‐BZ, BAZ‐Fa‐BZ, and their blends emit green light when excited at a wavelength of 365 nm.This article is protected by copyright. All rights reserved","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"38 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141189294","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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Enhancing the Properties of Chitosan–Pectin Hydrogels With Cellulose Nanowhiskers for Potential Applications in Wound Dressings 用纤维素纳米须增强壳聚糖-果胶水凝胶的性能，在伤口敷料中实现潜在应用

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-05-30 DOI: 10.1002/macp.202400088

Micaela Ferrante, Vera Alejandra Álvarez, Ravin Narain, Artjima Ounkaew, Jimena Soledad González

{"title":"Enhancing the Properties of Chitosan–Pectin Hydrogels With Cellulose Nanowhiskers for Potential Applications in Wound Dressings","authors":"Micaela Ferrante, Vera Alejandra Álvarez, Ravin Narain, Artjima Ounkaew, Jimena Soledad González","doi":"10.1002/macp.202400088","DOIUrl":"10.1002/macp.202400088","url":null,"abstract":"Chitosan and pectin are employed here in the formation of biodegradable hydrogels. The addition of cellulose nanowhiskers (CNW) into the hydrogels is accomplished through two methods: by swelling, after the polymeric network formation (Method A), and inclusion in polymer solutions before gelation, with varying CNW content (Method B). Comprehensive physico–chemical, thermal, microscopic, gel fraction, and water vapor transmission analyses are conducted, complemented by antibacterial and viability assessments. CNWs are successfully synthesized and incorporated within the hydrogel by both methods. Moreover, the degradation temperature (Tmax) of hydrogels is higher with CNW (0% CNW: 205.5 °C, 10% CNW: 217.0 °C). CNW aggregates are observed in hydrogels with 20% and 30% content but no aggregation is observed with 4% and 10%. The antimicrobial properties are not affected by the addition of CNW, and the cytotoxicity tests reveal better results with 10% CNW compared with 20%. The study signifies the versatility of CNWs as effective reinforcements, influencing structural, thermal, and biological aspects of the hydrogels. The proposed methodology, emphasizing CNW incorporation, lays the groundwork for innovative biomaterials with promising medical implications. This investigation encourages further exploration and validation of these composite hydrogels in vivo for practical medical use in wound dressings.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"225 17","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141189562","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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Synthesis, Characterization and Structure‐Property Investigations of Benzoxazine Resins with Low Surface Free Energy 低表面自由能苯并恶嗪树脂的合成、表征和结构-性能研究

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-05-30 DOI: 10.1002/macp.202400152

Changwen Hu, Zhenhao Yao, Wenqian Zhao, Kan Zhang

{"title":"Synthesis, Characterization and Structure‐Property Investigations of Benzoxazine Resins with Low Surface Free Energy","authors":"Changwen Hu, Zhenhao Yao, Wenqian Zhao, Kan Zhang","doi":"10.1002/macp.202400152","DOIUrl":"https://doi.org/10.1002/macp.202400152","url":null,"abstract":"Low surface free energy materials have garnered significant attention due to their exceptional properties and extensive applications, which play a pivotal role in diverse fields such as biotechnology, metallurgical processes, and electronic device manufacturing. To investigate the influence of electron effect derived from substituents on the surface properties of benzoxazine resins, we synthesized three distinct benzoxazine monomers characterized by different substituent groups. The monomer structures were verified using Fourier transform infrared (FT‐IR) and nuclear magnetic resonance (NMR) spectroscopy. Differential scanning calorimetry (DSC) tracked the polymerization behavior of benzoxazine resins, while thermogravimetric analysis (TGA) valuated the thermal stability of the resulting polybenzoxazines. Then the surface properties were systematically investigated through contact angle measurement and surface free energy calculation, facilitating a comprehensive discussion on the impact of different substituents on the surface energy. Our findings demonstrate that introducing trifluoromethyl leads to a substantial reduction in the surface energy of uncured resin. On the other hand, there is minimal impact on the surface free energy after undergoing elevated temperature treatments. The current study provides a foundation understanding for further developing polymers with low surface free energy.This article is protected by copyright. All rights reserved","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"42 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141189292","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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Agarose Nanofiber by Electrospinning 电纺琼脂糖纳米纤维

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-05-29 DOI: 10.1002/macp.202400155

Hiroaki Yoshida, Kiyonori Nagaoka, Hiroharu Ajiro

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Recent Developments in Antimicrobial and Antiviral Agents Based on Natural/Synthetic Polymers and Dendrimers: Design and Therapeutic Applications 基于天然/合成聚合物和树枝状聚合物的抗菌剂和抗病毒剂的最新发展：设计与治疗应用

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-05-28 DOI: 10.1002/macp.202400123

Ahmad Abd-El-Aziz, Moustafa M.G. Fouda, Carmen M. Sharaby, Ouyang Xiao, Xinyue Zhang, Yahya A. Alzahrany, Saleh A. Ahmed, Ning Ma, Alaa S. Abd-El-Aziz

{"title":"Recent Developments in Antimicrobial and Antiviral Agents Based on Natural/Synthetic Polymers and Dendrimers: Design and Therapeutic Applications","authors":"Ahmad Abd-El-Aziz, Moustafa M.G. Fouda, Carmen M. Sharaby, Ouyang Xiao, Xinyue Zhang, Yahya A. Alzahrany, Saleh A. Ahmed, Ning Ma, Alaa S. Abd-El-Aziz","doi":"10.1002/macp.202400123","DOIUrl":"10.1002/macp.202400123","url":null,"abstract":"This review article explores the recent innovations in the field of antimicrobial and antiviral macromolecules. With the rising challenge of antibiotic resistance, as well as the overuse of antibiotics, there is a growing demand for efficient solutions to combat microbial and viral infections. The development of new effective antimicrobial and antiviral agents is highlighted. This review is designed to give a comprehensive view of the literature focusing on a few examples of combating microbial and viral infections in each section. A brief description of naturally occurring organic-based materials that exhibit antimicrobial and/or antiviral activities is presented, focusing on polysaccharides, peptides, and proteins. Synthetic organic-based materials are divided into subsections including polymers, dendrimers, and nanomaterials. The synthesis and applications of inorganic materials such as polyphosphazenes and polysiloxanes, as well as tin-, germanium- and gallium-based materials are emphasized in this review. Organometallic macromolecules are also described, and their antimicrobial and antiviral activities are examined. Overall, this article provides a comprehensive overview of recent advancements in the design of antimicrobial and antiviral macromolecules, offering valuable insights into their potential applications in biomedical research and combating drug-resistant microorganisms and viruses.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"225 17","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141189465","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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Polymerization Scheme and Chemical Structure of Aromatic Diamine-Based Polybenzoxazines: New Details 基于芳香族二胺的聚苯并噁嗪的聚合方案和化学结构：新细节

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-05-27 DOI: 10.1002/macp.202400119

Ekaterina A. Gorbunova, Vyacheslav V. Shutov, Igor S. Sirotin

{"title":"Polymerization Scheme and Chemical Structure of Aromatic Diamine-Based Polybenzoxazines: New Details","authors":"Ekaterina A. Gorbunova, Vyacheslav V. Shutov, Igor S. Sirotin","doi":"10.1002/macp.202400119","DOIUrl":"10.1002/macp.202400119","url":null,"abstract":"The article discusses the polymerization scheme of benzoxazine monomer based on 4,4′-diaminodiphenylmethane (P-ddm) and the chemical structure of polybenzoxazine based on it poly(P-ddm). The polymerization behavior of benzoxazine P-ddm is studied using differential scanning calorimetry (DSC). Solid-state 13C MAS NMR is used to determine the chemical structure of poly(P-ddm). It is revealed that the сhemical structure of poly(P-ddm) predominantly consists not of phenolic Mannich bridges, as expected, but of methylene bridges, which indicates the process of deamination of phenolic Mannich bridges. However, no weight loss associated with the expected release of free amine during this process is detected. This may indicate the incorporation of a diamine moiety into the polymer chain through the formation of imine bonds, the signal of which is detected in the 13C MAS NMR and FTIR spectra of the poly(P-ddm), and on the 1H and 13C NMR spectra of model polybenzoxazine based on p-cresol and 4,4′-diaminodiphenylmethane poly(pC-ddm). Based on the data obtained, a hypothesis is put forward about the formation of a network polymer, the structure of which consists mainly of methylene and imine units.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"225 17","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141189447","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}

引用次数: 0