Macromolecular Chemistry and Physics最新文献_第3页

Acceleration and Amplification of Physical Aging in Thermo-Oxidized Epoxy Networks 热氧化环氧树脂网络中物理老化的加速和放大

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-03-27 DOI: 10.1002/macp.202400528

Blandine Quélennec, Romain Delannoy, Nicolas Delpouve, Emmanuel Richaud, Laurent Delbreilh

{"title":"Acceleration and Amplification of Physical Aging in Thermo-Oxidized Epoxy Networks","authors":"Blandine Quélennec, Romain Delannoy, Nicolas Delpouve, Emmanuel Richaud, Laurent Delbreilh","doi":"10.1002/macp.202400528","DOIUrl":"https://doi.org/10.1002/macp.202400528","url":null,"abstract":"The durability of civil engineering constructions is enhanced by protecting the concrete structures with epoxy coatings, which sustainability for decades of service is also conditioned by their aptitude to keep their dimensional stability under physical aging. This phenomenon, involving structural relaxation in the glassy state, is generally slow far from the glass transition, but has long-term consequences that may be detrimental for the macroscopic properties. Based on the premise that the structural relaxation rate is modified by the chemical modifications affecting the molecular mobility, this study investigates the effect of thermo-oxidative degradation on the physical aging kinetics. In a first step, the degradation by chain scission is suggested by results from thermal analyses, evidencing a decrease of the glass transition, an increase of the heat capacity step, and a lower thermal stability. Then, the kinetics of physical aging are compared between neat and thermo-oxidized epoxy networks. Using fast scanning calorimetry (FSC), the structural relaxation is followed for various aging temperatures, showing that physical aging proceeds faster while its intensity is amplified. Eventually, the relaxation functions fitted according to the Tool–Narayanaswamy–Moynihan (TNM) equation reveal lower activation energy in the oxidized networks in consistence with the chain scission scenario.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220242","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

Tailoring Piezoresistive Behavior of Compressive Strain Sensors by 3D-Printed Structure and Filler Dispersity 用3d打印结构和填料分散度裁剪压缩应变传感器的压阻性能

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-03-27 DOI: 10.1002/macp.202400480

Haidong Yin, Chenyang Zhang, Yu Liu, Fengmei Yu, Ai Lu, Chengzhen Geng

{"title":"Tailoring Piezoresistive Behavior of Compressive Strain Sensors by 3D-Printed Structure and Filler Dispersity","authors":"Haidong Yin, Chenyang Zhang, Yu Liu, Fengmei Yu, Ai Lu, Chengzhen Geng","doi":"10.1002/macp.202400480","DOIUrl":"https://doi.org/10.1002/macp.202400480","url":null,"abstract":"Flexible strain sensors are in high demand for wearable devices and smart healthcare applications. However, compressive strain sensors receive less attention than stretchable counterparts due to their limited sensitivity under compression. Emerging 3D printing technology enables precise control over cellular structures, offering a promising approach to enhance their sensing performance. This study investigates the effects of carbon nanotube (CNT) content, dispersion, and printed structural parameters on 3D-printed polydimethylsiloxane (PDMS)/CNT compressive sensors. Sensors fabricated with 3 wt% CNT ink, prepared via two-roll milling, exhibit a positive resistance change rate under compression, improving sensitivity. The resistance change rate further increases as the printed line spacing decreases and the number of layers increases. Significant variations in sensing behavior, such as resistance increase or decrease under strain, are observed and explained through a unified structural change model. The cyclability of sensors exhibiting different resistance responses is compared, demonstrating the reliability of the optimized sensors for human motion monitoring and spatial force detection. This work deepens the understanding of the piezoresistive behavior of 3D-printed compressive sensors and provides valuable guidance for their design, fabrication, and application.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 10","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091869","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

Hybrid Polymers Bearing Mono/Oligo-L-Lysine(Z)s: ADMET Polymerization and Structural Investigations in the Solid State 含单/低聚l -赖氨酸的杂化聚合物：ADMET聚合和固态结构研究

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-03-27 DOI: 10.1002/macp.202400510

Merve Basak Canalp, Wolfgang H. Binder

{"title":"Hybrid Polymers Bearing Mono/Oligo-L-Lysine(Z)s: ADMET Polymerization and Structural Investigations in the Solid State","authors":"Merve Basak Canalp, Wolfgang H. Binder","doi":"10.1002/macp.202400510","DOIUrl":"https://doi.org/10.1002/macp.202400510","url":null,"abstract":"Advancing novel polymers for biomedical applications requires in-depth knowledge between their chemical structure and physical properties under conditions such as assembly or folding. The secondary structure of hybrid-polymers containing lysine-residues (Lys) inside their main chain, separated by a stretch of n-alkyl-chains is here investigated. The polymer (A-[Lysn = 1]m = 18) is prepared by ADMET polymerization of the bis-ω-ene-functional mono-L-lysine(Z)s (Lysn = 1) optimizing conditions for ADMET polymerization of Lysn = 1 monomers in bulk. The hybrid-polymers, A-[Lysn = 1]m = 3, 7, 9, 18, 44 with molecular weights ranging from 1.3 to 17.6 kDa, display polydispersity (Đ) values in the range of 1.3–2.6. Comparison between these polymers and previously reported hybrid ADMET polymer, oligo-L-lysine(carboxybenzyl(Z)), (A-[Lysn]m) (i.e., n = 4, m = 24), containing longer stretches of the embedded lysine-unit was accomplished. Solid-state investigations (FT-IR and DSC) of the hybrid-polymers, A-[Lysn = 1]m = 18, A-[Lysn = 12]m = 8, and A-[Lysn = 24]m = 4, and the pre-polymers, Lysn = 12 and Lysn = 24 proved the presence of α-helices and β-folds at elevated temperatures in the range of 20 to 200 °C, further gaining understanding of the influence of the chain length of polymers on the formation of secondary structures.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/macp.202400510","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220243","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

Designing Nanofibrillar Macroporous Hydrogels via Aqueous Foam Templating 用泡沫水模板法设计纳米纤维大孔水凝胶

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-03-26 DOI: 10.1002/macp.202400492

Shunpu Yang, Wenzhi Bi, Huan Yu, Huaiming Wang, Ketong Wu, Yunhua Chen

{"title":"Designing Nanofibrillar Macroporous Hydrogels via Aqueous Foam Templating","authors":"Shunpu Yang, Wenzhi Bi, Huan Yu, Huaiming Wang, Ketong Wu, Yunhua Chen","doi":"10.1002/macp.202400492","DOIUrl":"https://doi.org/10.1002/macp.202400492","url":null,"abstract":"The emulsion templating method is a versatile approach for fabricating macroporous hydrogels, appreciated for its simplicity, high porosity, and the formation of interconnected pores. However, traditional templates using liquid phases as the dispersed medium often suffer from challenges like organic solvent residues, limiting their applicability in biomaterials. To address these limitations, air-in-water foams have emerged as a promising alternative but are constrained by the high surface tension of prepolymer solutions, which hampers the formation of stable templates. In this study, tannic acid (TA)-modified lysozyme amyloid nanofibrils (TA@AF) were integrated with gelatin methacrylate (GelMA) and methacryloylethylsulfobetaine (SBMA) monomers to stabilize air-in-water foams and fabricate nanofibrillar macroporous hydrogels (NMH) via free radical polymerization. The TA@AF nanofibrils played a dual role in controlling air bubbles and pore sizes and reinforcing the mechanical properties of the hydrogels. The resulting NMH hydrogels demonstrated excellent antioxidant and hemostatic capabilities while preventing protein adhesion. These attributes highlight the potential of air-in-water foam-templated nanofibrillar macroporous hydrogels as innovative materials for biomedical applications.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 10","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091663","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

High Biobased Content Coatings and Pressure Sensitive Adhesives through Blends of Natural Rubber Latex and Tailored Acrylic Dispersions 高生物基含量涂料和压敏粘合剂，通过天然橡胶乳胶和定制丙烯酸分散体的混合物

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-03-26 DOI: 10.1002/macp.202400466

Manel Estany, Romain Bentata, Cecile Moussard, Nicholas Ballard

{"title":"High Biobased Content Coatings and Pressure Sensitive Adhesives through Blends of Natural Rubber Latex and Tailored Acrylic Dispersions","authors":"Manel Estany, Romain Bentata, Cecile Moussard, Nicholas Ballard","doi":"10.1002/macp.202400466","DOIUrl":"https://doi.org/10.1002/macp.202400466","url":null,"abstract":"Natural rubber latex is a widely available, biobased polymer dispersion but the mechanical properties limit its use in a number of common applications of colloidal polymers, such as coatings and adhesives. In this work, the synthesis of a series of biobased acrylic latexes is discussed, which are capable of manipulating the mechanical properties of films cast from natural rubber latex in order to expand the range of potential applications. On the one hand, a series of isobornyl acrylate-rich, hydroplasticizable latexes containing methacrylic acid are synthesized. Blends of the neutralized form of these acrylic latexes with natural rubber latex lead to a phase-separated film structure containing glassy domains of the poly(isobornyl acrylate)-rich polymer and softer domains of the natural rubber latex. This film structure results in an increase of the Young's modulus of several orders of magnitude, which makes them of interest for coatings. On the other hand, when similar non-hydroplasticizable poly(isobornyl acrylate) latexes are synthesized but with much lower molar mass, the relatively high Tg acrylic component and the low Tg natural rubber latex are miscible, leading to a tackified system that displayed reasonable adhesive properties. These results demonstrate a route to coatings and adhesives with high biobased content.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 10","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091664","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

Formation Mechanism of Monodisperse Polyetherimide Nanoparticles with a Particle Size of 55 nm Prepared by Using Electrostatic Spraying Technique 静电喷涂法制备55 nm单分散聚醚酰亚胺纳米颗粒的形成机理

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-03-26 DOI: 10.1002/macp.202400538

Xingnan Chen, Peng Zhu, Huapeng Zhang, Ning Ma, Fang-Chang Tsai

{"title":"Formation Mechanism of Monodisperse Polyetherimide Nanoparticles with a Particle Size of 55 nm Prepared by Using Electrostatic Spraying Technique","authors":"Xingnan Chen, Peng Zhu, Huapeng Zhang, Ning Ma, Fang-Chang Tsai","doi":"10.1002/macp.202400538","DOIUrl":"https://doi.org/10.1002/macp.202400538","url":null,"abstract":"Polymer nanoparticles have long been of interest in both academic and industrial applications. Although Polyetherimide (PEI) is a high-performance thermoplastic with many advantages, so far only a few works have focused on studying the nanomaterialization of commercial PEI. Here, monodispersed PEI nanoparticles with a particle size ≈55 nm are successfully prepared for the first time through electrostatic spraying from PEI/n-methylpyrrolidone (NMP) solutions. Monodisperse PEI nanoparticles can be obtained at PEI concentration of 1 wt.%, and when PEI concentration is 5 or 10 wt.%, the products are micrometer-scale aggregates of PEI nanoparticles. As PEI concentration increased to 15 or 20 wt.%, PEI beads, and fibers appeared. In addition, the formation mechanism of PEI nanoparticles are also thoroughly investigated by rheological characterization and SEM observation. During the electrostatic spraying process, phase separation would occur when the droplets are formed, and then PEI nanoparticles generated by phase separation would be distributed around the inner edge of the droplets, and subsequently attached to the collection plate for further evaporation. This study will provide guidance and reference for the preparation of polymer nanoparticles smaller than 100 nm.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220176","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

Effect of Alkyl Chain Tail on Thermal Conductivity and Physical Properties of Side-Chain Liquid Crystalline Polymers 烷基链尾对侧链液晶聚合物导热性能和物理性能的影响

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-03-25 DOI: 10.1002/macp.202400522

Yeji Han, Thu Loan Dang, Soyeong Choe, Kyosun Ku, Hyeonuk Yeo

{"title":"Effect of Alkyl Chain Tail on Thermal Conductivity and Physical Properties of Side-Chain Liquid Crystalline Polymers","authors":"Yeji Han, Thu Loan Dang, Soyeong Choe, Kyosun Ku, Hyeonuk Yeo","doi":"10.1002/macp.202400522","DOIUrl":"https://doi.org/10.1002/macp.202400522","url":null,"abstract":"Thermally conductive polymers have gained scientific attention for improving heat dissipation in electric devices. Their thermal conductivity is enhanced by optimizing the network molecular alignment. Liquid crystal, through intermolecular interaction, achieves high orientation levels, thereby enabling superior thermal conductivity. This study aims to demonstrate the thermal conductivity of polymers derived from liquid crystal materials by synthesizing a series of liquid crystal monomers, EPn, based on a phenyl benzoate mesogen core. The EPn monomers are designed with epoxide functional groups with various alkyl chain tails (n = 3, 4, 5, 8). Side-chain polyethylene glycols (P-EPn series) are synthesized through anionic ring-opening polymerization using potassium tert-butoxide. The effect of the introduced aliphatic chain tail on structural orientation and physical properties is investigated, revealing significant effects on phase transition behavior and thermal conductivity. In addition, P-EPn exhibits higher thermal decomposition temperature (> 360 °C) compared to conventional polyethylene glycol, with P-EP5 achieving the highest thermal conductivity of 0.42 W m−1 K−1 in the P-EPn series.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/macp.202400522","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220106","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

Imperfect Crystals of Poly(butylene succinate) Formed at High Supercooling of the Melt 熔体高过冷时形成的聚琥珀酸丁二烯不完美晶体

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-03-25 DOI: 10.1002/macp.202500079

Katalee Jariyavidyanont, Xiaoshi Zhang, Christoph Schick, Alicyn M. Rhoades, René Androsch

{"title":"Imperfect Crystals of Poly(butylene succinate) Formed at High Supercooling of the Melt","authors":"Katalee Jariyavidyanont, Xiaoshi Zhang, Christoph Schick, Alicyn M. Rhoades, René Androsch","doi":"10.1002/macp.202500079","DOIUrl":"https://doi.org/10.1002/macp.202500079","url":null,"abstract":"Prior work revealed distinct differences in the X-ray diffraction patterns of poly(butylene succinate) (PBS) melt-crystallized at different temperatures, regarding the number, width, and position of diffraction peaks, detected in isotropic samples. To further evaluate whether the observed differences are caused by a change of the unit cell, or are solely due to different crystal sizes and perfection, X-ray fiber patterns of solid-state oriented PBS are acquired and analyzed. The data reveal that PBS crystallized at high supercooling of the melt at 20 °C contains crystals with enlarged dimensions of the monoclinic unit cell in the cross-chain direction, compared to PBS crystals initially grown at 20 °C and subsequently reorganized at elevated temperature at 100 °C. High-temperature reorganized crystals exhibit a unit cell similar to that formed after direct crystallization of the quiescent melt at the same high temperature, with the latter, however, unable to draw for observing X-ray fiber pattern. The observed changes in the unit cell of PBS when changing the crystallization temperature are discussed in the context of the widely observed crystallization-temperature-induced crystal polymorphism in other polymers.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/macp.202500079","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220105","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

Investigation of Reactive Compatibilization on Degradable Poly(lactic acid)/Poly(butylene adipate-co-terephthalate) Blends with Lysine Diisocyanate 可降解聚乳酸/聚己二酸丁烯-对苯二甲酸酯共混物与二异氰酸酯赖氨酸的反应增容研究

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-03-25 DOI: 10.1002/macp.202500033

Jiaoyu Chen, Xin Wang, Yu Huang, Xiao Zhang, Long Sun, Lingjie Lu, Xiangqiang Li, Lunjie Shen, Jie Hong, Weihua Zhou, Yang Wu

{"title":"Investigation of Reactive Compatibilization on Degradable Poly(lactic acid)/Poly(butylene adipate-co-terephthalate) Blends with Lysine Diisocyanate","authors":"Jiaoyu Chen, Xin Wang, Yu Huang, Xiao Zhang, Long Sun, Lingjie Lu, Xiangqiang Li, Lunjie Shen, Jie Hong, Weihua Zhou, Yang Wu","doi":"10.1002/macp.202500033","DOIUrl":"https://doi.org/10.1002/macp.202500033","url":null,"abstract":"Biodegradable poly(lactic acid)/poly(butylene adipate-co-terephthalate) (PLA/PBAT) blends have poor compatibility, and reactive compatibilization is the most effective approach to improve their compatibility. In this study, lysine diisocyanate (LDI) is employed as a reactive compatibilizer to improve the interfacial interactions within PLA/PBAT blends at various ratios (30/70, 50/50, and 70/30). The effects of LDI on the reactive mechanism, thermodynamic behavior, mechanical properties, and phase morphology of the blends are thoroughly investigated. Fourier Transform Infrared Spectroscopy (FTIR) analysis shows that LDI react with the carboxyl terminal group of the PLA and PBAT to form copolymers, which serve as a chemical bridge between the two phases. Thermodynamics behaviors show that LDI reduces the crystallization rate and crystallinity of the blends. Mechanical property studies prove that LDI significantly improves the comprehensive properties of the blends, and the elongation at break, elastic modulus, and tensile strength are optimal for LDI at 2 wt.%. Impact strength even exceeds 90kJ m−2 for PLA/PBAT (50/50) blends at above 2 wt.% LDI. The morphology studied by Scanning Electron Microscopy (SEM) shows that the addition of LDI can emulsify the two-phase interface, change the sea-island structure into a co-continuous one, and improve the affinity between the two components.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220104","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

All Organic Bulk Heterojunction Antibacterial Nanoparticles Prepared by Conjugated Donor Polymer and ITIC Acceptor 由偶联给体聚合物和ITIC受体制备的全有机体积异质结抗菌纳米颗粒

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-03-22 DOI: 10.1002/macp.202400504

Jiaxuan Wang, Danni Wang, Jing Lv, Feng Li, Tao Zhuang, Aziz Saparbaev, Urol Kudratovich Makhmanov, Mingliang Sun

{"title":"All Organic Bulk Heterojunction Antibacterial Nanoparticles Prepared by Conjugated Donor Polymer and ITIC Acceptor","authors":"Jiaxuan Wang, Danni Wang, Jing Lv, Feng Li, Tao Zhuang, Aziz Saparbaev, Urol Kudratovich Makhmanov, Mingliang Sun","doi":"10.1002/macp.202400504","DOIUrl":"https://doi.org/10.1002/macp.202400504","url":null,"abstract":"PFO-DDQ is a donor−acceptor (D–A) type conjugated polymer, with its backbone consisting of 95% 9,9-di-octylfluorene (DOF) and 5% 2,3-dimethyl-5,8-dithien-2-yl-quinoxalines (DDQ). PFO-DDQ nanoparticles (NPs) suspensions are prepared using the nanoprecipitation method by varying the precursor solution concentration. The photoluminescence (PL) spectrum of the nanoparticles is determined by the energy transfer between the fluorene and the narrow-bandgap DDQ segments. The fluorescence of the NPs can be tuned from orange to blue by adjusting the concentration of the precursor solution. PFO-DDQ, the nonfullerene acceptor small molecule (ITIC), and PFO-DDQ/ITIC bulk heterojunction (BHJ) NPs suspensions are prepared using the nanoprecipitation method, and their photocatalytic antibacterial properties are evaluated. The results showed that, under 2 h of exposure to a 35 mW cm−2 LED light, the antimicrobial rates of the three 40 µg mL−1 nanoparticles suspensions against Escherichia coli (E. coli) are 98.28%, 100%, and 99.88%, respectively. The enhanced light absorption, improved charge transfer efficiency, and the crystalline phase of ITIC contributed to the faster photocatalytic antibacterial rate of PFO-DDQ/ITIC BHJ nanoparticles.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 10","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091607","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