Macromolecular Chemistry and Physics最新文献_第4页

Co-Polyamide with 2-Pyridylquinoline Moieties in the Main Chain and Its Metal-Polymer Complex with Cu(II) for Toluene Recovery: Synthesis, Structure, Physicochemical and Transport Properties

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-01-07 DOI: 10.1002/macp.202400178

Ilya Faykov, Alexandra Pulyalina, Ekaterina Gruzdeva, Alexander Novikov, Mikhail Goikhman, Irina Podeshvo, Nairi Loretsyan, Iosif Gofman, Ivan Abalov, Natalia Saprykina, Galina Polotskaya

{"title":"Co-Polyamide with 2-Pyridylquinoline Moieties in the Main Chain and Its Metal-Polymer Complex with Cu(II) for Toluene Recovery: Synthesis, Structure, Physicochemical and Transport Properties","authors":"Ilya Faykov, Alexandra Pulyalina, Ekaterina Gruzdeva, Alexander Novikov, Mikhail Goikhman, Irina Podeshvo, Nairi Loretsyan, Iosif Gofman, Ivan Abalov, Natalia Saprykina, Galina Polotskaya","doi":"10.1002/macp.202400178","DOIUrl":"https://doi.org/10.1002/macp.202400178","url":null,"abstract":"Currently, recovery of organic solvents using eco-friendly methods is one of the primary industrial tasks. Separation of liquid media by pervaporation offers more advantages as compared to conventional purification methods, such as distillation, in view of low energy and resource consumption. This work is focused on the study of novel copolyamide with 2-pyridylquinoline-4,7-dicarboxylic acid moieties in the main chain and its metal-polymer complex in the form of dense films. At present, metal-polymer complexes are growing in importance among membranes. The analysis of mechanical and thermal properties of the films also supports their high operational characteristics. Comprehensive studies of the structure of the obtained films show that both samples have a rigid and dense structure, but the metal-polymer complex is characterized by an increased surface roughness. The hypothesis of supramolecular association between polymers and separated liquids (methanol and toluene) is confirmed by quantum chemical calculations. Transport properties of novel polymers in pervaporation of toluene/methanol mixtures are examined and compared with the literature data. Both polymer films demonstrate an outstanding selectivity toward toluene in the separation of binary mixtures. The developed films have higher values of total flux and separation factor as compared to the most of known membranes.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 5","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143555039","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

Specific Anion Effects on the Growth and Stability of Poly (2-Ethyl-2-Oxazoline)/Tannic Acid Layer by Layer Films

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-12-31 DOI: 10.1002/macp.202400324

Elda Beruhil Bahar Adatoz, A. Levent Demirel

{"title":"Specific Anion Effects on the Growth and Stability of Poly (2-Ethyl-2-Oxazoline)/Tannic Acid Layer by Layer Films","authors":"Elda Beruhil Bahar Adatoz, A. Levent Demirel","doi":"10.1002/macp.202400324","DOIUrl":"https://doi.org/10.1002/macp.202400324","url":null,"abstract":"The control of pH responsiveness of hydrogen-bonded (H-bonded) layer-by-layer films is especially important in biomedical applications. Specific anion effects are known to vary the cloud point temperature of poly(2-ethyl-2-oxazoline) (PEOX) solutions. By growing H-bonded multilayers of PEOX and Tannic Acid (TA) in the presence of nine different sodium salts at different salt concentrations, it is shown that the growth profile and pH stability of the multilayers can be controlled in a wide range. The observed changes in the average bilayer (BL) thickness and critical disintegration pH are in accordance with the Hofmeister series of anions. Going from the most kosmotropic (Na2CO3) to the most chaotropic (NaSCN), BL thickness decreases by ≈11.5 nm while the critical disintegration pH increases up to 10. Conformational variations in PEOX chains from compact coils due to dehydration by kosmotropic anions to extended chains due to direct ion binding of chaotropic anions contribute to these changes. ITC investigation of PEOX/TA interaction in the presence of sodium salts in solution confirms the enhanced stability in the direction of the most chaotropic anion. The results clearly show that properties of H-bonded multilayers can be easily tuned by specific anion effects as desired by applications.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143770605","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

Crystal Hydrogel-Based Switchable Radiative Cooling Materials for Smart Windows

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-12-31 DOI: 10.1002/macp.202400394

Zhuangsen Zhang, Xiaozhuang Zhou, Qianwei Liu, Xinhong Xiong, Jiaxi Cui

{"title":"Crystal Hydrogel-Based Switchable Radiative Cooling Materials for Smart Windows","authors":"Zhuangsen Zhang, Xiaozhuang Zhou, Qianwei Liu, Xinhong Xiong, Jiaxi Cui","doi":"10.1002/macp.202400394","DOIUrl":"https://doi.org/10.1002/macp.202400394","url":null,"abstract":"Smart windows can effectively balance the space temperature of buildings without compromising the essential functions of windows. However, conventional thermochromic windows have limited sunlight regulation capabilities and face challenges with switching as desired. Herein, A class of novel smart windows based on crystal hydrogels is introduced that achieve free switching between transparent (for heating) and opaque (for radiative cooling) states through thermal and mechanical stimuli. The crystal hydrogels are made from cross-linked polyacrylamide (PAM) and sodium acetate (NaAc). By optimizing the sodium acetate concentration and sample thickness, The combination of excellent cooling ability is achieved at the opaque state and good low-temperature stability at the transparent state in the hydrogels. Using the optimized hydrogel to prepare a smart window equipped with a heater and a mechanical trigger tip, the rapid on-demand transition between transparent and opaque states is demonstrated. The results indicate that the smart window lowers temperatures by up to 9.4 °C compared to ordinary windows and maintains stable emissivity and reflectivity even after 100 cycles due to its robust solar modulation capabilities. This technology provides new energy-saving solutions for smart buildings but also explores future applications of smart materials, showcasing innovative advantages and technical strengths in smart windows.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 5","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143555161","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

In Situ Photochemical Synthesis of Environmentally Friendly Conductive Nano-Ink

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-12-27 DOI: 10.1002/macp.202400367

Melisa Konar, Ebru Turgut Him, Nergis Guler, Ezgi Nur Balci, Nergis Arsu

{"title":"In Situ Photochemical Synthesis of Environmentally Friendly Conductive Nano-Ink","authors":"Melisa Konar, Ebru Turgut Him, Nergis Guler, Ezgi Nur Balci, Nergis Arsu","doi":"10.1002/macp.202400367","DOIUrl":"https://doi.org/10.1002/macp.202400367","url":null,"abstract":"Advancements in nanotechnology allow for the development of in situ or ex situ prepared nanocoatings and nanoparticles which are valuable in the electronics industry due to their intrinsic physical and chemical properties. Printed electronics, intended for applications such as flexible displays and smart labels, offer a distinct advantage over conventional products. The primary components used in printed electronics are the nano-ink containing polymer matrix and the substrate for printing. Gold, silver, and copper are commonly chosen for these processes because of their excellent electrical conductivity. In the electronics industry, it is well-known that producing conductive ink typically requires high temperatures and extended processing times, as is the case with conventional methods. In this study, in situ prepared silver nanoparticles (AgNPs) in a crosslinked polymeric matrix are achieved simultaneously using environmentally friendly polyvinyl alcohol (PVA) and acrylamide via photopolymerization. The generated radicals facilitated the formation of silver nano particles while simultaneously forming a cross-linked network that underwent further processing to transform into ink. The obtained polymer ink formulation is suitable for use with a refillable pen, and it is determined that it dries shortly after writing on surfaces such as paper and glass and exhibits high durability under room conditions.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143770613","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

“Grafting to” Rubber Composite for Elastic Dielectric Material

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-12-27 DOI: 10.1002/macp.202400364

Dinda Bazliah, Qi-An Hong, Livy Laysandra, Yu-Cheng Chiu

{"title":"“Grafting to” Rubber Composite for Elastic Dielectric Material","authors":"Dinda Bazliah, Qi-An Hong, Livy Laysandra, Yu-Cheng Chiu","doi":"10.1002/macp.202400364","DOIUrl":"https://doi.org/10.1002/macp.202400364","url":null,"abstract":"In addition to traditional rubber applications, 1,4-cis-polyisoprene (cis-PI) has been utilized in wearable electronics. While synthetic PI typically exhibits lower durability compared to natural rubber (NR), high-molecular-weight cis-PI compensates by offering improved mechanical properties and chemical resistance. The group proposes using a commercial cis-PI with high molecular weight of 250 000 g mol−1 (PI250K-C) grafted onto modified nanoparticle structures including silicon dioxide (mSiO2), rutile titanium dioxide (mRTiO2), and anatase titanium dioxide (mATiO2) as an insulator in organic field effect transistors (OFETs) due to its naturally low dielectric constant. The nanoparticles are pretreated with a coupling agent to improve adhesion and prevent aggregation. Rubber composite films, designated X%-mY-PI250K-C (where X = 10, 20, 30% and Y = mSiO2, mRTiO2, mATiO2), are fabricated using sulfur vulcanization. The modified films demonstrate excellent mechanical stress (1.15 ± 0.1 MPa) and elasticity, enduring 50 loading–unloading cycles without residual strain. In contrast, rubber composites produced from simple blending show half the mechanical stress at 0.7 ± 0.3 MPa, which is attributed to nanoparticle agglomeration observed in SEM and EDX results. Additionally, mRTiO2 nanoparticles significantly increase the dielectric constant of PI250K-C from 2.12 to 12.93, enhancing electrical performance for TFT applications. This study underscores the effectiveness of the “grafting to” approach for producing robust rubber composites, highlighting the importance of nanoparticle selection and fabrication precision for stretchable organic electronics.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143253558","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

Effects of Chain Dispersity on the Stability of Frank–Kasper Phases Self-Assembled from Diblock Copolymers

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-12-23 DOI: 10.1002/macp.202400393

Chi To Lai, An-Chang Shi

{"title":"Effects of Chain Dispersity on the Stability of Frank–Kasper Phases Self-Assembled from Diblock Copolymers","authors":"Chi To Lai, An-Chang Shi","doi":"10.1002/macp.202400393","DOIUrl":"https://doi.org/10.1002/macp.202400393","url":null,"abstract":"The effect of chain dispersity on the relative stability of Frank–Kasper (FK) phases self-assembled from diblock copolymers (DBCPs) is studied using self-consistent field theory applied to DBCPs with one disperse block obeying the Poisson or Schulz–Zimm distributions. The results demonstrate that the chain dispersity enhances the relative stability of the FK phases. For DBCPs with small conformational asymmetry, the FK <math>\u0000 <semantics>\u0000 <mi>σ</mi>\u0000 <annotation>$sigma$</annotation>\u0000 </semantics></math> phase can be stabilized by dispersity and the stability window of the FK phases widens with the increase of dispersity. For DBCPs with large conformational asymmetry, the Laves C14 and C15 phases, which are metastable in monodisperse DBCPs, can be stabilized by dispersity. An analysis of the spatial organization of polymers reveals that the enhanced stability of the FK phases originated from intra- and inter-domain segregation of chains with different lengths.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/macp.202400393","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143253073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Glycosylated Polymers Toward Stable Protein-Based Lighting

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-12-23 DOI: 10.1002/macp.202400429

David Gutierrez-Armayor, Alicia Asin, Marta Patrian, Mattia Nieddu, Rubén D. Costa

{"title":"Glycosylated Polymers Toward Stable Protein-Based Lighting","authors":"David Gutierrez-Armayor, Alicia Asin, Marta Patrian, Mattia Nieddu, Rubén D. Costa","doi":"10.1002/macp.202400429","DOIUrl":"https://doi.org/10.1002/macp.202400429","url":null,"abstract":"Protein-based optoelectronics faces two challenges to keep the performance of conventional technologies: stabilizing proteins through water-free fabrication methods and developing bio-friendly interfaces. In this context, bio-hybrid lighting, which integrates fluorescent protein (FP) based photon down-converting filters, represents an emerging concept toward ensuring a sustainable lighting sector. They promise to replace rare earth and/or toxic emitters applied for photon down-conversion in white commercial LEDs with FP-polymer color filters. A key component is a branched polyethylene oxide that stabilizes FPs in a water-less environment upon film forming. Recently sugar additives are successfully used as natural desiccation protectants against osmotic dehydration stress to further enhance FP stability by reinforcing intra-protein H-bonding. Herein, the glycosylation of the branched polymer is disclosed to stabilize FPs in coatings that resulted in 300-fold enhanced device stability due to a significant reduction of the heat generation and slow-down of the H-transfer-assisted emission deactivation process compared to reference polymer coatings. Thermal and spectroscopic techniques suggest that this finding is related to the higher crystallinity of the coatings and rigid environment provided by the glycosylated polymers. Overall, this work reinforces the use of sugars (additives or glycosylated polymers) to preserve the emission/thermal properties of FPs in water-less environments for optoelectronics.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 4","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/macp.202400429","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143455998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal Conductivity Hydroxylated Boron Nitride/Polyurethane/Polyvinyl Alcohol Composite Nanofiber Film Prepared by Electrospinning

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-12-23 DOI: 10.1002/macp.202400365

Guan zhi Zhao, Ruijie Ma, Yunjie Yin

引用次数: 0

Front Cover: Macromol. Chem. Phys. 24/2024 封面：Macromol.Chem.24/2024

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-12-20 DOI: 10.1002/macp.202470048

引用次数: 0

Masthead: Macromol. Chem. Phys. 24/2024 刊头：Macromol.Chem.24/2024

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-12-20 DOI: 10.1002/macp.202470049

引用次数: 0