Macromolecules最新文献_第7页

Correction to “Flavylium-Containing Stimuli-Responsive RAFT Polymers: Synthesis and Enhanced Stability”

IF 5.1 1区化学

Macromolecules Pub Date : 2025-03-13 DOI: 10.1021/acs.macromol.5c0053310.1021/acs.macromol.5c00533

Yuxi Liu, Peter W. McDonald, San H. Thang and Chris Ritchie*,

引用次数: 0

Theory of Bauschinger and Some Other Memory Effects in Glassy Polymers

IF 5.1 1区化学

Macromolecules Pub Date : 2025-03-13 DOI: 10.1021/acs.macromol.4c0174510.1021/acs.macromol.4c01745

Thomas C. Merlette, Florence Clément, Paul Sotta and Didier R. Long*,

{"title":"Theory of Bauschinger and Some Other Memory Effects in Glassy Polymers","authors":"Thomas C. Merlette, Florence Clément, Paul Sotta and Didier R. Long*, ","doi":"10.1021/acs.macromol.4c0174510.1021/acs.macromol.4c01745","DOIUrl":"https://doi.org/10.1021/acs.macromol.4c01745https://doi.org/10.1021/acs.macromol.4c01745","url":null,"abstract":"We proposed recently that the strain hardening of glassy polymers is attributed to the increase of free energy barriers for α-relaxation as a consequence of local orientation of Kuhn segments during the course of deformation. As the chains have been significantly oriented at the Kuhn segments scale, the contribution of Kuhn segments orientation to free energy barriers may become large and may then overcompensate the decrease of free energy barriers due to the increasing stress, the latter being responsible for yield and the onset of plastic flow. We show that the slow relaxation of Kuhn segments orientation explains the various memory effects observed in the strain hardening regime and generically named Bauschinger effect. It explains the fact that the stress–strain curve of a second deformation after some waiting time at some point in the strain hardening regime rejoins the reference curve, and that a yield stress is present for this second deformation. Indeed, the degrees of freedom which control the free energy barriers associated with yield relax on the time scale of the experiment, whereas Kuhn segments orientations, that is the degrees of freedom which control the free energy barriers associated with plastic flow in the strain hardening regime, relax slowly. We calculate the evolution of the relaxation time distributions, as well as that of the dominant relaxation time and of the Kuhn segments orientations, during successive deformations (traction–traction, traction-compression, compression-traction, compression–compression). These predictions could be tested experimentally.","PeriodicalId":51,"journal":{"name":"Macromolecules","volume":"58 6","pages":"3298–3320 3298–3320"},"PeriodicalIF":5.1,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Polynorbornenes Bearing Cyclic Fluoroalkyl Side Groups for Achieving High Glass Transition Temperature and Low Refractive Index

IF 5.1 1区化学

Macromolecules Pub Date : 2025-03-13 DOI: 10.1021/acs.macromol.4c0318510.1021/acs.macromol.4c03185

Makoto Uno*, Masafumi Sugiyama, Takashi Okazoe and Daisuke Kawaguchi*,

{"title":"Polynorbornenes Bearing Cyclic Fluoroalkyl Side Groups for Achieving High Glass Transition Temperature and Low Refractive Index","authors":"Makoto Uno*, Masafumi Sugiyama, Takashi Okazoe and Daisuke Kawaguchi*, ","doi":"10.1021/acs.macromol.4c0318510.1021/acs.macromol.4c03185","DOIUrl":"https://doi.org/10.1021/acs.macromol.4c03185https://doi.org/10.1021/acs.macromol.4c03185","url":null,"abstract":"Partially fluorinated polymers exhibit various properties owing to their fluoroalkyl groups: thus, understanding the types of fluoroalkyl groups incorporated into a polymer chain is crucial for controlling the physical properties and is of significant academic interest. Although polymer backbone structures frequently incorporate short linear fluoroalkyl groups, cyclic fluoroalkyl groups are comparatively rare. To achieve both a high glass transition temperature (Tg) and low refractive index (n), polynorbornenes with several types of cyclic fluoroalkyl side groups are synthesized by ring-opening metathesis polymerization. Most of the synthesized polymers could form thin films via spin coating from nonfluorinated organic solutions. The films were transparent to the ultraviolet and near-infrared wavelengths region. The Tg and n of partially fluorinated polynorbornenes depend on the steric bulk of the side groups. Furthermore, the effect of substituting oxygen atoms for methylene groups within the polymer backbone and side groups on Tg and n is investigated. The incorporation of cyclic fluoroalkyl side groups is promising for the molecular design of amorphous optical materials with high thermal stability.","PeriodicalId":51,"journal":{"name":"Macromolecules","volume":"58 6","pages":"3221–3230 3221–3230"},"PeriodicalIF":5.1,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Mechanochemical Reversible Complexation Mediated Polymerization Enabled Synthesis of Fluorinated Polyacrylate Copolymers for Room Temperature Solid-State Lithium Batteries

IF 5.1 1区化学

Macromolecules Pub Date : 2025-03-13 DOI: 10.1021/acs.macromol.4c0298310.1021/acs.macromol.4c02983

Ziye Ren, Pan Mei, Chenyu Wang, Du Chen, Li Zhang, Wei Zhang*, Zhao Wang* and Zhengbiao Zhang*,

{"title":"Mechanochemical Reversible Complexation Mediated Polymerization Enabled Synthesis of Fluorinated Polyacrylate Copolymers for Room Temperature Solid-State Lithium Batteries","authors":"Ziye Ren, Pan Mei, Chenyu Wang, Du Chen, Li Zhang, Wei Zhang*, Zhao Wang* and Zhengbiao Zhang*, ","doi":"10.1021/acs.macromol.4c0298310.1021/acs.macromol.4c02983","DOIUrl":"https://doi.org/10.1021/acs.macromol.4c02983https://doi.org/10.1021/acs.macromol.4c02983","url":null,"abstract":"Solid polymer electrolytes (SPEs) have garnered significant interest in the advancement of solid-state lithium batteries (SSBs) due to their excellent safety, processability, and lightweight features. Currently, there is an urgent demand for the green synthesis of high performance SPEs for applications in SSBs. In this study, we report a one-pot mechanochemical reversible complexation mediated polymerization (mechano-RCMP) approach to synthesize fluorinated polyacrylates under solventless conditions. The mechano-RCMP approach demonstrated an efficient controlled polymerization process with quantitative monomer conversion through force induced activation of the carbon–iodine bond. The chain extension experiments confirmed the high chain-end functional groups of the polymers. Further copolymerization of heptafluorobutyl acrylate (HFBA) with butyl acrylate (BA) and methoxy polyethylene glycol acrylate (mPEG) resulted in the formation of P(BA-co-HFBA-co-mPEG), which demonstrated high thermal stability and amorphous characteristics. This copolymer film exhibited a wide electrochemical window (upper cutoff voltage up to 5.4 V) and high Li+ conductivity (1.3 × 10–4 S cm–1 at 30 °C). SSBs fabricated with the P(BA-co-HFBA-co-mPEG) film showed good cycling performance, maintaining a capacity retention of 98% after 100 cycles at room temperature.","PeriodicalId":51,"journal":{"name":"Macromolecules","volume":"58 6","pages":"3199–3207 3199–3207"},"PeriodicalIF":5.1,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Impact of Polymer Topology on Physical Aging of Thin Film Composite Membranes Based on PIM-1, cPIM-1, and Associated Blends

IF 5.5 1区化学

Macromolecules Pub Date : 2025-03-13 DOI: 10.1021/acs.macromol.4c02657

Andrew B. Foster, Ming Yu, Mustafa Alshurafa, Peter M. Budd

{"title":"Impact of Polymer Topology on Physical Aging of Thin Film Composite Membranes Based on PIM-1, cPIM-1, and Associated Blends","authors":"Andrew B. Foster, Ming Yu, Mustafa Alshurafa, Peter M. Budd","doi":"10.1021/acs.macromol.4c02657","DOIUrl":"https://doi.org/10.1021/acs.macromol.4c02657","url":null,"abstract":"An overview is provided of the influence of polymer topology on the physical aging of PIM-1 thin film composite (TFC) membranes measured in gas permeation studies. Topologically distinct PIM-1 samples are compared first with each other, then in polymeric blends, and then with other literature. Both initial permeability (1 day) and long-term aging rates (up to 1 year) can be attributed to structural components present within the overall microstructure of the polymer. The rigidity and structural regularity of a predominantly disubstituted PIM-1 polymer proved to facilitate high initial CO2 permeability in TFCs followed by a rapid aging rate (βP = 1.0) to produce an increasingly nonselective membrane over 28 days. By contrast, TFCs prepared from branched PIM-1 polymers, which have lower glass transition temperature, exhibit lower initial permeabilities followed by much slower aging rates, remaining highly selective for up to one year. Branched PIM-1 polymers which contain a greater proportion of small loop structures show a very slow aging rate (βP = 0.22−0.25), whereas those with more open branched structure tend to exhibit a faster aging rate (βP = 0.67−0.69). Thin film nanocomposite (TFN) membranes cast from blends of a disubstituted PIM-1 with colloidal network (CN)-rich PIM-1 fillers can completely halt permeability aging for up to one month but then subsequently resume aging at a faster rate (βP = 1.8−2.8) to more than compensate. TFNs prepared from blending a branched PIM-1 polymer with a CN-rich Cardo-PIM-1 filler can produce better long-term aging performance (up to 1 year).","PeriodicalId":51,"journal":{"name":"Macromolecules","volume":"7 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143608724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Polynorbornenes Bearing Cyclic Fluoroalkyl Side Groups for Achieving High Glass Transition Temperature and Low Refractive Index

IF 5.5 1区化学

Macromolecules Pub Date : 2025-03-13 DOI: 10.1021/acs.macromol.4c03185

Makoto Uno, Masafumi Sugiyama, Takashi Okazoe, Daisuke Kawaguchi

{"title":"Polynorbornenes Bearing Cyclic Fluoroalkyl Side Groups for Achieving High Glass Transition Temperature and Low Refractive Index","authors":"Makoto Uno, Masafumi Sugiyama, Takashi Okazoe, Daisuke Kawaguchi","doi":"10.1021/acs.macromol.4c03185","DOIUrl":"https://doi.org/10.1021/acs.macromol.4c03185","url":null,"abstract":"Partially fluorinated polymers exhibit various properties owing to their fluoroalkyl groups: thus, understanding the types of fluoroalkyl groups incorporated into a polymer chain is crucial for controlling the physical properties and is of significant academic interest. Although polymer backbone structures frequently incorporate short linear fluoroalkyl groups, cyclic fluoroalkyl groups are comparatively rare. To achieve both a high glass transition temperature (Tg) and low refractive index (n), polynorbornenes with several types of cyclic fluoroalkyl side groups are synthesized by ring-opening metathesis polymerization. Most of the synthesized polymers could form thin films via spin coating from nonfluorinated organic solutions. The films were transparent to the ultraviolet and near-infrared wavelengths region. The Tg and n of partially fluorinated polynorbornenes depend on the steric bulk of the side groups. Furthermore, the effect of substituting oxygen atoms for methylene groups within the polymer backbone and side groups on Tg and n is investigated. The incorporation of cyclic fluoroalkyl side groups is promising for the molecular design of amorphous optical materials with high thermal stability.","PeriodicalId":51,"journal":{"name":"Macromolecules","volume":"206 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143618508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Effect of Grafting Density on Self-Assembled Lamellar Phases of Core–Shell Bottlebrushes

IF 5.1 1区化学

Macromolecules Pub Date : 2025-03-13 DOI: 10.1021/acs.macromol.4c0319110.1021/acs.macromol.4c03191

Emily M. Ness, Mason J. Kozody, Christopher J. Ellison and Mahesh K. Mahanthappa*,

{"title":"Effect of Grafting Density on Self-Assembled Lamellar Phases of Core–Shell Bottlebrushes","authors":"Emily M. Ness, Mason J. Kozody, Christopher J. Ellison and Mahesh K. Mahanthappa*, ","doi":"10.1021/acs.macromol.4c0319110.1021/acs.macromol.4c03191","DOIUrl":"https://doi.org/10.1021/acs.macromol.4c03191https://doi.org/10.1021/acs.macromol.4c03191","url":null,"abstract":"This report examines the melt self-assembly behaviors of core–shell bottlebrush polymers (csBBs), in which a single AB diblock copolymer decorates each backbone repeat unit. To access these nonlinear polymer architectures, four norbornyl end-functionalized, symmetric composition poly(ε-decalactone)-block-poly(rac-lactide) (DL) diblock copolymers (Mn = 5.9–7.6 kg/mol, Đ = 1.20–1.29, with fL = 0.49–0.51) were first synthesized by sequential ring-opening polymerizations (ROPs). Living ring-opening metathesis polymerization (ROMP) of these DL macromonomers produces narrow dispersity csBBs (Đ = 1.02–1.18) with backbone degrees of polymerization Nbb = 6–37. For csBBs of a given DL macromonomer, small-angle X-ray scattering (SAXS) analyses reveal that the order-to-disorder transition temperatures (TODT’s) of their microphase-separated lamellar mesophases increase with increasing Nbb. From these data, the dependence of the critical macromonomer arm segregation strength for microphase separation (χNarm)ODT on Nbb is identified. Comparisons of these results with reports on related nonlinear block polymers suggest that the csBB architecture reduces the free energy penalty for chain arrangement into the self-assembled lamellar morphology, while brush grafting density directs the extent of side chain stretching, with implications for microphase-separated melt stability and the observed domain (d) spacings.","PeriodicalId":51,"journal":{"name":"Macromolecules","volume":"58 6","pages":"3016–3026 3016–3026"},"PeriodicalIF":5.1,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Theory of Bauschinger and Some Other Memory Effects in Glassy Polymers

IF 5.5 1区化学

Macromolecules Pub Date : 2025-03-13 DOI: 10.1021/acs.macromol.4c01745

Thomas C. Merlette, Florence Clément, Paul Sotta, Didier R. Long

{"title":"Theory of Bauschinger and Some Other Memory Effects in Glassy Polymers","authors":"Thomas C. Merlette, Florence Clément, Paul Sotta, Didier R. Long","doi":"10.1021/acs.macromol.4c01745","DOIUrl":"https://doi.org/10.1021/acs.macromol.4c01745","url":null,"abstract":"We proposed recently that the strain hardening of glassy polymers is attributed to the increase of free energy barriers for α-relaxation as a consequence of local orientation of Kuhn segments during the course of deformation. As the chains have been significantly oriented at the Kuhn segments scale, the contribution of Kuhn segments orientation to free energy barriers may become large and may then overcompensate the decrease of free energy barriers due to the increasing stress, the latter being responsible for yield and the onset of plastic flow. We show that the slow relaxation of Kuhn segments orientation explains the various memory effects observed in the strain hardening regime and generically named Bauschinger effect. It explains the fact that the stress–strain curve of a second deformation after some waiting time at some point in the strain hardening regime rejoins the reference curve, and that a yield stress is present for this second deformation. Indeed, the degrees of freedom which control the free energy barriers associated with yield relax on the time scale of the experiment, whereas Kuhn segments orientations, that is the degrees of freedom which control the free energy barriers associated with plastic flow in the strain hardening regime, relax slowly. We calculate the evolution of the relaxation time distributions, as well as that of the dominant relaxation time and of the Kuhn segments orientations, during successive deformations (traction–traction, traction-compression, compression-traction, compression–compression). These predictions could be tested experimentally.","PeriodicalId":51,"journal":{"name":"Macromolecules","volume":"18 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143618509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Molecular Models of Nanoplastics from Semi-Crystalline Polyethylene

IF 5.5 1区化学

Macromolecules Pub Date : 2025-03-12 DOI: 10.1021/acs.macromol.4c03240

Enzo Venezia, Andrea Correa, Rosario Esposito, Gianmarco Munaò, Antonio De Nicola, Giuseppe Milano

{"title":"Molecular Models of Nanoplastics from Semi-Crystalline Polyethylene","authors":"Enzo Venezia, Andrea Correa, Rosario Esposito, Gianmarco Munaò, Antonio De Nicola, Giuseppe Milano","doi":"10.1021/acs.macromol.4c03240","DOIUrl":"https://doi.org/10.1021/acs.macromol.4c03240","url":null,"abstract":"Molecular models for nanosized polar crystalline fragments generated during the degradation of semicrystalline polyethylene (PE), suitable for hybrid-particle field molecular dynamics, are proposed. These models provide detailed thermodynamic and structural characterization of the agglomeration of fragments constituting nanoplastics in aqueous media. Effects of aging and environmental conditions in terms of surface chemistry, pH, and counterion valence of the models are studied. In particular, the colloidal stability of fragment pairs in water has been investigated by calculating free energy as a function of interfragment distance using the thermodynamic integration technique. The behaviors obtained are in line with experimental literature. Large-scale MD simulations of multifragment systems in water show spontaneous self-assembly for all considered fragment models. Due to their molecular resolution and computational efficiency, the proposed models are able to include detailed representations of environmentally relevant systems, paving the way to a molecular understanding of the behavior of nanoplastics from semicrystalline polymers in the environment.","PeriodicalId":51,"journal":{"name":"Macromolecules","volume":"397 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Revealing the Role of Polydispersity in Multilevel Assembly Structures and Its Correlation with the Mechanical and Electrical Properties of IDTBT Thin Films

IF 5.1 1区化学

Macromolecules Pub Date : 2025-03-12 DOI: 10.1021/acs.macromol.5c0031610.1021/acs.macromol.5c00316

Junhang Li, Chujun Zhang, Qiang Zhang, Sichun Wang*, Rui Zhang*, Zicheng Ding* and Yanchun Han*,

{"title":"Revealing the Role of Polydispersity in Multilevel Assembly Structures and Its Correlation with the Mechanical and Electrical Properties of IDTBT Thin Films","authors":"Junhang Li, Chujun Zhang, Qiang Zhang, Sichun Wang*, Rui Zhang*, Zicheng Ding* and Yanchun Han*, ","doi":"10.1021/acs.macromol.5c0031610.1021/acs.macromol.5c00316","DOIUrl":"https://doi.org/10.1021/acs.macromol.5c00316https://doi.org/10.1021/acs.macromol.5c00316","url":null,"abstract":"Molecular weight optimization is crucial for high-performance stretchable conjugated polymer films. However, an in-depth understanding of molecular weight distribution on solution assembly, film microstructures, and electrical/mechanical properties of conjugated polymers is lacking. Herein, a model conjugated polymer, poly(indacenodithiophene-co-benzothiadiazole) (IDTBT), with a similar weight-average molecular weight but different polydispersity indexes (PDIs) of 3.2, 2.4, and 1.6 is investigated. The low-PDI polymer, containing a high content of homogeneous long chains, facilitates sufficient interchain aggregation caused by the enhanced chain entanglement and prolonged aggregation dynamics, which creates a low-crystallinity film containing long-chain well-connected aggregates and chain entanglement networks. Consequently, the charge mobility increases from 2.1 to 3.1 cm2 V–1 s–1 as PDI decreases from 3.2 to 1.6. During stretching, the polymer chains align more effectively along the strain direction in the low-PDI film, which creates more dynamic sliding sites and short-range aggregates to dissipate the strain energy. Thus, the low-PDI polymer film exhibits a high charge mobility of 1.0 ± 0.1 cm2 V–1 s–1 at 100% strain and 0.9 ± 0.1 cm2 V–1 s–1 after 100 cycles of stretching–releasing at 25% strain, which significantly outperforms the high-PDI film. This work demonstrates the significance of polydispersity optimization for developing mechanically robust polymer semiconductor films in stretchable electronics.","PeriodicalId":51,"journal":{"name":"Macromolecules","volume":"58 6","pages":"3208–3220 3208–3220"},"PeriodicalIF":5.1,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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