Macromolecular Rapid Communications最新文献_第8页

Thermal Conductivity of Polymers: A Simple Matter Where Complexity Matters. 聚合物的导热性：简单问题复杂化。

IF 4.2 3区化学

Macromolecular Rapid Communications Pub Date : 2024-10-18 DOI: 10.1002/marc.202400517

Debashish Mukherji

{"title":"Thermal Conductivity of Polymers: A Simple Matter Where Complexity Matters.","authors":"Debashish Mukherji","doi":"10.1002/marc.202400517","DOIUrl":"https://doi.org/10.1002/marc.202400517","url":null,"abstract":"Thermal conductivity coefficient κ measures the ability of a material to conduct a heat current. In particular, κ is an important property that often dictates the usefulness of a material over a wide range of environmental conditions. For example, while a low κ is desirable for the thermoelectric applications, a large κ is needed when a material is used under the high temperature conditions. These materials range from common crystals to commodity amorphous polymers. The latter is of particular importance because of their use in designing light weight high performance functional materials. In this context, however, one of the major limitations of the amorphous polymers is their low κ, reaching a maximum value of ≈0.4 W/Km that is 2-3 orders of magnitude smaller than the standard crystals. Moreover, when energy is predominantly transferred through the bonded connections, κ ⩾ 100 W/Km. Recently, extensive efforts have been devoted to attain a tunability in κ via macromolecular engineering. In this work, an overview of the recent results on the κ behavior in polymers and polymeric solids is presented. In particular, computational and theoretical results are discussed within the context of complimentary experiments. Future directions are also highlighted.","PeriodicalId":205,"journal":{"name":"Macromolecular Rapid Communications","volume":" ","pages":"e2400517"},"PeriodicalIF":4.2,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142454322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

NIR-II Image-Guided Wound Healing in Hypoxic Diabetic Foot Ulcers: The Potential of Ergothioneine-Luteolin-Chitin Hydrogels. 缺氧性糖尿病足溃疡的近红外-II 图像引导伤口愈合：麦角硫因-木犀草素-柠檬素水凝胶的潜力。

IF 4.2 3区化学

Macromolecular Rapid Communications Pub Date : 2024-10-18 DOI: 10.1002/marc.202400528

Yao Yang, Shengnan He, Wumei Wang, Yiwen Lu, Bingtao Ren, Ci Dan, Yang Ji, Rui Yu, Xinpeng Ju, Xue Qiao, Yuling Xiao, Jie Cai, Xuechuan Hong

{"title":"NIR-II Image-Guided Wound Healing in Hypoxic Diabetic Foot Ulcers: The Potential of Ergothioneine-Luteolin-Chitin Hydrogels.","authors":"Yao Yang, Shengnan He, Wumei Wang, Yiwen Lu, Bingtao Ren, Ci Dan, Yang Ji, Rui Yu, Xinpeng Ju, Xue Qiao, Yuling Xiao, Jie Cai, Xuechuan Hong","doi":"10.1002/marc.202400528","DOIUrl":"https://doi.org/10.1002/marc.202400528","url":null,"abstract":"Hypoxic diabetic foot ulcers (HDFUs) pose a challenging chronic condition characterized by oxidative stress damage, bacterial infection, and persistent inflammation. This study introduces a novel therapeutic approach combining ergothioneine (EGT), luteolin (LUT), and quaternized chitosan oxidized dextran (QCOD) to address these challenges and facilitate wound healing in hypoxic DFUs. In vitro, assessments have validated the biosafety, antioxidant, and antimicrobial properties of the ergothioneine-luteolin-chitin (QCOD@EGT-LUT) hydrogel. Furthermore, near-infrared II (NIR-II) fluorescence image-guided the application of QCOD@EGT-LUT hydrogel in simulated HDFUs. Mechanistically, QCOD@EGT-LUT hydrogel modulates the diabetic wound microenvironment by reducing reactive oxygen species (ROS). In vivo studies demonstrated increased expression of angiogenic factors mannose receptor (CD206) and latelet endothelial cell adhesion molecule-1 (PECAM-1/CD31), coupled with decreased inflammatory factors tumor necrosis factor-α (TNF-α) and Interleukin-6 (IL-6), thereby promoting diabetic wound healing through up-regulation of transforming growth factor β-1 (TGF-β1).","PeriodicalId":205,"journal":{"name":"Macromolecular Rapid Communications","volume":" ","pages":"e2400528"},"PeriodicalIF":4.2,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142454313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Exploration of the Photoluminescence Behavior and Emission Mechanism of Thioester Polyacrylamide Tablets During the Gradual Increase of Molecular Weight. 硫酯聚丙烯酰胺片在分子量逐渐增加过程中的光致发光行为和发射机制探索

IF 4.2 3区化学

Macromolecular Rapid Communications Pub Date : 2024-10-18 DOI: 10.1002/marc.202400657

Qing Zhou, Jun Wang, Yuanchao Zhang, Lei Yang

{"title":"Exploration of the Photoluminescence Behavior and Emission Mechanism of Thioester Polyacrylamide Tablets During the Gradual Increase of Molecular Weight.","authors":"Qing Zhou, Jun Wang, Yuanchao Zhang, Lei Yang","doi":"10.1002/marc.202400657","DOIUrl":"https://doi.org/10.1002/marc.202400657","url":null,"abstract":"To enhance the photoluminescence (PL) of unconventional luminescent compounds, particularly their persistent room temperature phosphorescence (p-RTP) performance, compressing the powder into tablets has been demonstrated as a viable approach. Nevertheless, the alterations in the emission capability of PL in compacted tablets have not been comprehensively investigated. In this study, four polyacrylamide (PAM) with controllable molecular weight (MW) are fabricated from powder to tablets, and their PL emission properties are thoroughly examined and compared with corresponding powders to elucidate the emission mechanism. As MW increases, both PL and p-RTP emissions of the tablets gradually intensify, exhibiting significant enhancement compared to the corresponding powder while retaining the characteristic blue shift. Through small angle X-ray scattering (SAXS), construction of molecular models for tablets, detailed analysis of molecular interactions, and theoretical calculations are conducted to reasonably explain these emission phenomena using clustering-triggered emission (CTE) and average packing density promoted emission (PDE) mechanisms. These findings not only advance the understanding of nonconventional luminogens' emission mechanisms but also offer new insights for preparing nonconventional luminescent polymers with controllable p-RTP emission performance.","PeriodicalId":205,"journal":{"name":"Macromolecular Rapid Communications","volume":" ","pages":"e2400657"},"PeriodicalIF":4.2,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142454312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Organic-Inorganic Hybrid Materials from Vegetable Oils. 从植物油中提取有机-无机杂化材料。

IF 4.2 3区化学

Macromolecular Rapid Communications Pub Date : 2024-10-16 DOI: 10.1002/marc.202400408

Eline Laurent, Milan Maric

引用次数: 0

Synthesis and Self-Assembly of Poly(4-acetoxystyrene) Cubosomes. 聚（4-乙酰氧基苯乙烯）立方体的合成与自组装。

IF 4.2 3区化学

Macromolecular Rapid Communications Pub Date : 2024-10-16 DOI: 10.1002/marc.202400633

Marcel Schumacher, Marvin Foith, Manuel Trömer, Nadine Tänzer, Sabine Rosenfeldt, Markus Retsch, André H Gröschel

引用次数: 0

Water as Dual-Function Plasticizer and Cosolvent in Gel Electrolytes for Dye-Sensitized Solar Cells. 水作为染料敏化太阳能电池凝胶电解质中的双重功能增塑剂和助溶剂。

IF 4.2 3区化学

Macromolecular Rapid Communications Pub Date : 2024-10-15 DOI: 10.1002/marc.202400481

Z L Goh, N K Farhana, Fathiah Kamarulazam, M Pershaanaa, Shahid Bashir, K Ramesh, S Ramesh

{"title":"Water as Dual-Function Plasticizer and Cosolvent in Gel Electrolytes for Dye-Sensitized Solar Cells.","authors":"Z L Goh, N K Farhana, Fathiah Kamarulazam, M Pershaanaa, Shahid Bashir, K Ramesh, S Ramesh","doi":"10.1002/marc.202400481","DOIUrl":"https://doi.org/10.1002/marc.202400481","url":null,"abstract":"This study presents a novel approach to developing eco-friendly dye-sensitized solar cells (DSSCs) using natural and renewable materials for gel polymer electrolytes (GPEs), reducing reliance on unsustainable solvents. Water is added to polar aprotic solvents, specifically ethylene carbonate/propylene carbonate (EC/PC), across various mass fractions (0:100 to 100:0). An amphiphilic hydroxypropyl cellulose (HPC) natural polymer is employed to formulate GPEs within this water-EC/PC cosolvent system, achieving successful gelation up to 50:50 mass fractions. Incorporating water reduced the gel strength and viscosity of the GPEs. Water acted as a plasticizer, enhancing the polymer chains mobility, and creating a more flexible and permeable structure. This increased ion diffusion coefficients and ion mobility, resulting in a maximum ionic conductivity of 18.17 mS cm-1. The highest efficiency achieved in DSSCs using these GPEs is 5.81%, with elevated short-circuit current density and reduced recombination losses. However, some compositions experienced syneresis, affecting their stability. The GPE with a 40:60 mass fraction exhibited superior long-term stability because it is free from syneresis, though it achieved a lower efficiency (4.83%), making it the best-performing sample. This work demonstrates the feasibility and benefits of using gel polymer electrolytes in an aqueous system, improving DSSC efficiency and sustainability.","PeriodicalId":205,"journal":{"name":"Macromolecular Rapid Communications","volume":" ","pages":"e2400481"},"PeriodicalIF":4.2,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142454323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Dynamic Micelle-Hydrogels for 3D-Architected Transition Metal Sulfides. 用于三维结构过渡金属硫化物的动态胶束水凝胶。

IF 4.2 3区化学

Macromolecular Rapid Communications Pub Date : 2024-10-14 DOI: 10.1002/marc.202400740

Zhenzhen Wang, Xiaozhuang Zhou, Junen Wu, Yimeng Wei, Yubo Cui, Yulong Xia, Weiming Xu, Shichun Mu, Jiaxi Cui

{"title":"Dynamic Micelle-Hydrogels for 3D-Architected Transition Metal Sulfides.","authors":"Zhenzhen Wang, Xiaozhuang Zhou, Junen Wu, Yimeng Wei, Yubo Cui, Yulong Xia, Weiming Xu, Shichun Mu, Jiaxi Cui","doi":"10.1002/marc.202400740","DOIUrl":"https://doi.org/10.1002/marc.202400740","url":null,"abstract":"Additive manufacturing of transition metal sulfides (TMS) enables the creation of complex 3D structures, significantly expanding their applications. However, preparing 3D-structured TMS remains challenging due to difficulties in developing suitable inks. In this study, a supramolecular micelle hydrogel as the ink to fabricate 3D-structured TMS is utilized. Initially, the hydrogels are printed and infused with metal salt solutions to stabilize the structures, which are then calcined to convert into miniaturized 3D-TMS replicas. The micellar hydrogels crosslink via hydrophobic interactions, with sodium dodecyl sulfonate (SDS) micelles providing both a hydrophobic environment and sulfur sources. During calcination, the decomposed sulfur precursors coordinate with metal ions to form various TMS, including FeS2, Cu2S, Ni3S2, and Co9S8, along with several metal sulfides like PbS and SnS. Additionally, the method also allows for the preparation of transition metal dichalcogenides such as MoS2 and WS2. The formation mechanism is demonstrated using Ni3S2 as an example which exhibits notable catalytic activity in oxygen evolution reactions (OER) and hydrogen evolution reactions (HER). Given its simplicity and versatility, this dynamic micellar hydrogel-derived strategy offers a promising pathway for creating advanced TMS materials.","PeriodicalId":205,"journal":{"name":"Macromolecular Rapid Communications","volume":" ","pages":"e2400740"},"PeriodicalIF":4.2,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142454310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

4D Printing of Multifunctional and Biodegradable PLA-PBAT-Fe₃O₄ Nanocomposites with Supreme Mechanical and Shape Memory Properties. 具有优异机械和形状记忆特性的多功能和可生物降解聚乳酸-PBAT-Fe3O4 纳米复合材料的 4D 印刷。

IF 4.2 3区化学

Macromolecular Rapid Communications Pub Date : 2024-10-14 DOI: 10.1002/marc.202400661

Mohammad Amin Yousefi, Davood Rahmatabadi, Majid Baniassadi, Mahdi Bodaghi, Mostafa Baghani

{"title":"4D Printing of Multifunctional and Biodegradable PLA-PBAT-Fe3O4 Nanocomposites with Supreme Mechanical and Shape Memory Properties.","authors":"Mohammad Amin Yousefi, Davood Rahmatabadi, Majid Baniassadi, Mahdi Bodaghi, Mostafa Baghani","doi":"10.1002/marc.202400661","DOIUrl":"https://doi.org/10.1002/marc.202400661","url":null,"abstract":"4D printing magneto-responsive shape memory polymers (SMPs) using biodegradable nanocomposites can overcome their low toughness and thermal resistance, and produce smart materials that can be controlled remotely without contact. This study presented the development of 3D/4D printable nanocomposites based on poly (lactic acid) (PLA)-poly (butylene adipate-co-terephthalate) (PBAT) blends and magnetite (Fe3O4) nanoparticles. The nanocomposites are prepared by melt mixing PLA-PBAT blends with different Fe3O4 contents (10, 15, and 20 wt%) and extruded into granules for material extrusion 3D printing. The morphology, dynamic mechanical thermal analysis (DMTA), mechanical properties, and shape memory behavior of the nanocomposites are investigated. The results indicated that the Fe3O4 nanoparticles are preferentially distributed in the PBAT phases, enhancing the storage modulus, thermal stability, strength, elongation, toughness, shape fixity, and recovery of the nanocomposites. The optimal Fe3O4 loading is found to be 10 wt%, as higher loadings led to nanoparticle agglomeration and reduced performance. The nanocomposites also exhibited fast shape memory response under thermal and magnetic activation due to the presence of Fe3O4 nanoparticles. The 3D/4D printable nanocomposites demonstrated multifunctional multi-trigger shape-memory capabilities and potential applications in contactless and safe actuation.","PeriodicalId":205,"journal":{"name":"Macromolecular Rapid Communications","volume":" ","pages":"e2400661"},"PeriodicalIF":4.2,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142454309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Organic-Inorganic Dual-Network Composite Separators for Lithium Metal Batteries. 用于锂金属电池的有机-无机双网复合隔膜。

IF 4.2 3区化学

Macromolecular Rapid Communications Pub Date : 2024-10-14 DOI: 10.1002/marc.202400644

Zetong Liu, Pingan Li, Kangjia Hu, Hao Sun, Rongxing Li, Shanshan Yang, Xianluo Hu

{"title":"Organic-Inorganic Dual-Network Composite Separators for Lithium Metal Batteries.","authors":"Zetong Liu, Pingan Li, Kangjia Hu, Hao Sun, Rongxing Li, Shanshan Yang, Xianluo Hu","doi":"10.1002/marc.202400644","DOIUrl":"https://doi.org/10.1002/marc.202400644","url":null,"abstract":"The suboptimal ionic conductivity of commercial polyolefin separators exacerbates uncontrolled lithium dendrite formation, deteriorating lithium metal battery performance and posing safety hazards. To address this challenge, a novel organic-inorganic composite separator designed is prepared to enhance ion transport and effectively suppress dendrite growth. This separator features a thermally stable, highly porous poly(m-phenylene isophthalamide) (PMIA) electrospun membrane, coated with ultralong hydroxyapatite (HAP) nanowires that promote \"ion flow redistribution.\" The synergistic effects of the nitrogen atoms in PMIA and the hydroxyl groups in HAP hinder anion transport while facilitating efficient Li+ conduction. Meanwhile, the optimized unilateral pore structure ensures uniform ion transport. These results show that the 19 µm-thick HAP/PMIA composite separator achieves remarkable ionic conductivity (0.68 mS cm-1) and a high lithium-ion transference number (0.51). Lithium symmetric cells using HAP/PMIA separators exhibit a lifespan exceeding 1000 h with low polarization, significantly outperforming commercial polypropylene separators. Furthermore, this separator enables LiFePO4||Li cells to achieve an enhanced retention of 97.3% after 200 cycles at 1 C and demonstrates impressive rate capability with a discharge capacity of 72.7 mAh g-1 at 15 C.","PeriodicalId":205,"journal":{"name":"Macromolecular Rapid Communications","volume":" ","pages":"e2400644"},"PeriodicalIF":4.2,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142454315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Synthesis and Characterization of β-Myrcene-Styrene and β-Ocimene-Styrene Copolymers. β-Myrcene-Styrene 和 β-Ocimene-Styrene 共聚物的合成与表征。

IF 4.2 3区化学

Macromolecular Rapid Communications Pub Date : 2024-10-14 DOI: 10.1002/marc.202400641

Raffaele Marzocchi, Ilaria Grimaldi, Odda Ruiz de Ballesteros, Giuseppe Femina, Adriano Guida, Rosa Ricciardi, Pasquale Morvillo, Carmine Capacchione, Finizia Auriemma

引用次数: 0