ACS polymers Au最新文献

{"title":"Design and Performance of a Novel Scalable Core–Sheath Inverted Nozzle Soft Material Pressure Spinner","authors":"Hettiyahandi Binodh De Silva,&nbsp;Angelo Delbusso,&nbsp;Yanqi Dai,&nbsp;Merve Gultekinoglu,&nbsp;Shervanthi Homer-Vanniasinkam,&nbsp;Mohan Edirisinghe","doi":"10.1021/acspolymersau.5c00174","DOIUrl":"10.1021/acspolymersau.5c00174","url":null,"abstract":"<p>Core–sheathed inverted nozzlepressurized gyration (CsINPG)is a novel fiber manufacturing process based on gas blowing-assistedrotary coaxial spinning technology, capable of large-scale manufactureof core–sheathed, micropolymeric structures. The CsINPG spinningvessel is constructed from polycarbonate and has a unique nozzle arrangement,which increases uniformity and facilitates the formation of core–sheathedfibers. The CsINPG apparatus functions as a jet generator, ejectingthe spinning feedstock under the combined forces of centrifugal forceand pressure differentials. The centrifugal force, which is generatedby the spinning of the vessel, is powered by a connected electricalmotor. This enables the loaded polymeric feedstock to overcome itssurface tension, facilitating fluid ejection through the externalnozzles on the vessel wall to form spinning jets. These polymericjets undergo further stretching through the assimilation of the pressuredifferential, which is powered by introducing nitrogen flows. Thisfurther increases the initial velocity and acceleration. In core–sheathedpressurized gyration, the feedstock is present in two different chambersof the core and the sheath. Furthermore, during “inverted”nozzle-pressurized gyration, the entire manufacturing process is carriedout on a horizontal axis, facilitating the controlled streaming ofthese spinning jets into a water bath. This facilitates the usageof “green polymers” such as alginate and cellulose,which require water baths to be converted from soluble streams toinsoluble fibrous structures. These fabricated core–sheathedfibers, manufactured under the optimum parameters in this study, producedfibers with average diameters measuring &lt;10 μm. This paperwill delve into the development of the novel CsINPG manufacturingprocess, focusing on the design of the spinning vessel, the parametersused, the optimization of parameters and their consequences, and thepotential future applications of the manufactured core–sheathedfibers.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"6 1","pages":"480–491"},"PeriodicalIF":6.7,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146203980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Global Analysis of Polyfluorene via AB-Type Suzuki–Miyaura Polymerization: Empirical and Mechanistic Rationalization of Structural and Reaction Parameters on Molar Mass, Dispersity, and Yield","authors":"Alexander Kleine,&nbsp;Ulrich S. Schubert,&nbsp;Michael Jäger","doi":"10.1021/acspolymersau.5c00121","DOIUrl":"10.1021/acspolymersau.5c00121","url":null,"abstract":"<p>The preparation of conjugated polymers with preciselytunable optoelectronicproperties is based on modern polymerization techniques. In additionto conventional step-growth polycondensation for the underlying C–Ccoupling steps, the Suzuki-Miyaura catalyst-transfer polymerization(SCTP) continues to attract great interest, as it enables chain growthwith controlled molar masses, dispersity values, and end group fidelity.The combination of these beneficial properties allows for use in definedblock copolymers or as functional building blocks in functional polymerarchitectures aiming to control energy and charge transfer at themacromolecular level. For an ideal SCTP mechanism, a ring-walkingstep is crucial<span></span>and many experimental parameters contributeto the overall success of the polymerization to tailor the desireddegree of polymerization, low dispersity values, and high yields.Many reports explored specific combinations within the available parameterspace, yet a unifying analysis to identify limitations as well aspromising future directions to advance synthetic methodologies isneeded. In this work, all available experimental data for the AB-type2,7-linked poly­(fluorene) is collected, and a detailed algorithmicglobal analysis is presented, including the tabulated results formachine learning and reinspection of the collected raw data. It isfound that SCTP is typically obeyed for monomer-to-catalyst ratiosup to 25, while the combination of ^<em>t</em>Bu₃P-based Pd precatalysts and boronate-based monomers enablesexcellent SCTP fidelity with monomer-to-catalyst ratios up to 500.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"6 1","pages":"6–32"},"PeriodicalIF":6.7,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146203900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solvation-Driven Self-Assembly of Polyetheramine–Epoxide Gels: Insights from Molecular Simulations","authors":"Renato P. Orenha,&nbsp;Eduardo F. Molina,&nbsp;Felipe B. Alves,&nbsp;Bruno A. Fico,&nbsp;Marcelo Albuquerque,&nbsp;Renato L. T. Parreira,&nbsp;Luciano T. Costa","doi":"10.1021/acspolymersau.5c00159","DOIUrl":"10.1021/acspolymersau.5c00159","url":null,"abstract":"<p>Polymer-based materialshave emerged as promising platforms forcontrolled nutrient delivery in agriculture, offering enhanced efficiencyand sustainability. In this study, we performed molecular dynamicssimulations to investigate the self-assembly mechanism of Medipacsepoxy polymer (MEP113) vesicles in aqueous environments. We show thatMEP113 concentration critically influences its aggregation behavior:the simulation in the gas phase (vacuum) favors polymer clustering,while aqueous solvation promotes molecular dispersion through hydrationeffects. Radial distribution function (RDF) analyses revealed thatwater disrupts direct polymer–polymer interactions, alteringthe solute organization, especially at higher polymer concentrations.We analyzed structural parameters such as radius of gyration and end-to-enddistance measurements and found that solvated systems undergo conformationalexpansion, contrasting with the compact arrangements observed in dryconditions. Additionally, noncovalent interaction analyses highlightedthe key roles of hydrogen bonding and van der Waals forces in stabilizingMEP113 assemblies in solution. These insights advance the rationaldesign of nanostructured polymer systems for applications in agricultureand nanotechnology.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"6 1","pages":"405–414"},"PeriodicalIF":6.7,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146203988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Marvelous Characteristics of Hydroxyl-Functionalized Azo-Dye Polymers for Electrocatalytic Sensing: An Informative Review","authors":"Lokman Liv","doi":"10.1021/acspolymersau.5c00145","DOIUrl":"10.1021/acspolymersau.5c00145","url":null,"abstract":"<p>Hydroxyl-functionalized azo-dye monomers can be electropolymerizedonto a supporting electrode surface, providing an electrocatalyticsensing feature due to their unique physicochemical and electrochemicalproperties. These polymers combine the versatile redox activity ofazo groups with the improved conductivity and stability yielded bythe conjugation of aromatic functional groups and hydroxyl functionalities.These properties synergistically enable the polymer film platformsto determine target analytes with greater accuracy, selectivity, andsensitivity than bare platforms, thereby facilitating electrocatalyticdetection. Moreover, these polymer films have exhibited exceptionalstability, consistent reproducibility, and remarkable resistance tofouling, making them well-suited for practical applications. Thisstudy evaluated the detection performance of platforms produced bythe electropolymerization of hydroxyl-containing azo-dye monomers,and the underlying reasons for the observed electrocatalytic activityof these polymers were discussed using the extended Hückelcharge and the Molecular Mechanics Force Field (MM2) calculations.Consequently, this review highlights the potential of hydroxyl-containingazo polymer-based electrodes as advanced electrochemical sensing platformsand provides excellent foresight in their use.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"6 1","pages":"61–85"},"PeriodicalIF":6.7,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146203969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cryopreservation of Avian Erythrocytes Using Macromolecular Cryoprotectants","authors":"Akalabya Bissoyi,&nbsp;Cigdem Buse Oral,&nbsp;Ashish Choudhary,&nbsp;Matthew I. Gibson","doi":"10.1021/acspolymersau.5c00151","DOIUrl":"10.1021/acspolymersau.5c00151","url":null,"abstract":"<p>Erythrocyte (red blood cell) cryopreservation is an essentialbiotechnologyfor healthcare (transfusions), diagnostics, conservation, and fundamentalresearch. Mature mammalian erythrocytes are anucleate, do not divide,and cannot undertake protein biosynthesis. In contrast, avian erythrocyteshave a distinct evolutionary pathway, retaining their nucleus, andare capable of other limited functions, such as protein biosynthesis,but have a shorter shelf life than mammalian erythrocytes. Here, wereport the successful cryopreservation of avian red blood cells usinga polyampholyte (macromolecular cryoprotectant), which can reduceintracellular ice formation. Under optimized conditions with 10% DMSOand 60 mg·mL^–1 of polyampholyte, ∼90%recovery could be achieved, outperforming a conventional glycerol-basedformulation, especially when longer-term storage (up to 6 months)was tested. Scanning electron microscopy confirmed that the cells’morphology was retained. Confocal fluorescence microscopy showed reducedapoptosis compared to glycerol cryopreservation and confirmed increasedrecovery of actin (cytoskeleton) polymerization post-thaw. Overall,these results show the potential of macromolecular cryoprotectantsto be deployed in nonhuman cryobiology for animal health and potentiallyspecies conservation.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"6 1","pages":"366–375"},"PeriodicalIF":6.7,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146203703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Modular Synthetic Strategy toward Fast-Growing Poly(amide-carbosilane) Dendrimers Based on Click Chemistry and Organic Solvent Nanofiltration","authors":"Antonín Edr,&nbsp;Martin Konhefr,&nbsp;Alena Krupková,&nbsp;Lucie Červenková Št́astná,&nbsp;Jana Bernášková,&nbsp;Olga Kočková,&nbsp;Věra Vlčková,&nbsp;Zuzana Walterová,&nbsp;Lívia Kanizsová,&nbsp;Jan Lang,&nbsp;Jakub Žváček,&nbsp;Marek Malý,&nbsp;Tomáš Strašák","doi":"10.1021/acspolymersau.5c00171","DOIUrl":"10.1021/acspolymersau.5c00171","url":null,"abstract":"<p>Dendrimers, constituting a prominent class of monodisperseandmultivalent macromolecular compounds with outstanding properties,are characterized by regular and highly branched three-dimensionalarchitectures and well-defined chemical structures. Within each structuraltype, the skeletal diversity is typically limited to the range ofgenerations. Here, we introduce a novel modular synthetic strategyenabling an increase in the diversity of the dendrimer interior whilemaintaining its chemical nature. Resulting poly­(amide-carbosilane)(PAMCAS) dendrimers can be fine-tuned within one generation in termsof size, number, and density of end groups, as well as interior freevolume. Using a tetravalent core and two building blocks<span></span>dendriticwedges with branching degrees 3 and 6<span></span>we demonstrate the potencyof this strategy by producing a family of dendrimers through a controllediterative process that combines highly chemoselective amidic couplingand thiol–ene click reaction (TEC). Within three generations,we prepared 14 structural analogs of PAMCAS dendrimers, systematicallyvarying the order of building blocks and thus their structural profile.The solution properties of the obtained materials were studied byDLS, A4F, diffusion NMR, and molecular modeling. When using exclusivelythe AB₆ module, the dendritic growth is accelerated andallows straightforward access to structures with extremely high valencyin a given generation. As the modular synthetic strategy poses a considerablepurification challenge, we implemented organic solvent nanofiltration(OSN) as the main separation tool. Herein, we demonstrate proof-of-principleexperiments to evaluate the scope and limits of the use of OSN asan effective separation method in synthetic macromolecular chemistry.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"6 1","pages":"454–467"},"PeriodicalIF":6.7,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146203935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Automation-Assisted Photoinduced Atom Transfer Radical Polymerization","authors":"Cesar Ramirez,&nbsp;Eman Ahmed,&nbsp;Elena Di Mare,&nbsp;Maria Pineiro-Goncalves,&nbsp;Apostolos Maroulis,&nbsp;Prajakatta Mulay,&nbsp;D. Christopher Radford,&nbsp;Adam J. Gormley","doi":"10.1021/acspolymersau.5c00067","DOIUrl":"10.1021/acspolymersau.5c00067","url":null,"abstract":"<p>Oxygen-tolerant reversible-deactivationradical polymerizations(RDRP) now allow many of these reactions to proceed in open labware,such as well plates. This enables the high-throughput synthesis oftailored polymers and lowers the knowledge barrier required to obtainthese materials. Building on our previous work automating photoinducedelectron/energy transfer reversible addition–fragmentationchain transfer (PET–RAFT) and enzyme-assisted RAFT (Enz-RAFT)polymerization, we now introduce automated atom transfer radical polymerization(ATRP). Here, we demonstrate the potential of this platform for thehigh-throughput optimization of ATRP chemistry. Furthermore, we demonstratethat this workflow can help provide insights into the selection ofreaction components, such as ligands and initiators, for the polymerizationof kinetically difficult monomers such as methyl methacrylate withsmaller rates of propagation than acrylates. This coupling paves theway for data-driven optimization of ATRP reactions, accelerated bythe generation of high-throughput data sets. To facilitate the integrationof robotics for high-throughput applications in polymer synthesisand optimization of photo-ATRP, we have made a Python package availableto assist with experimental planning. The tool accepts Excel sheetswith user-defined molar ratios, target monomer concentrations, andreagent stock concentrations and outputs an Excel sheet with actionablerecipes that can be readily implemented in liquid handling transfersteps via manual or automated pipetting.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"6 1","pages":"181–193"},"PeriodicalIF":6.7,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146203525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Single-Step Grafting of a Thermoresponsive RAFT Polymer from Nanocellulose by Radical Decarboxylation","authors":"Gianluca Vidali,&nbsp;David Joram Mendoza,&nbsp;Cameron Bentley,&nbsp;Alasdair I. McKay,&nbsp;Vikram Singh Raghuwanshi,&nbsp;Jitendra Mata,&nbsp;Gil Garnier,&nbsp;Joel F. Hooper","doi":"10.1021/acspolymersau.5c00115","DOIUrl":"10.1021/acspolymersau.5c00115","url":null,"abstract":"<p>The grafting of polymers in a single step from TEMPO-oxidizednanocellulose(TOCN) via controlled radical polymerization is reported here forthe first time. Reversible addition–fragmentation chain-transfer(RAFT) polymerization is achieved through silver-mediated radicaldecarboxylation on the surface of the cellulose fibers in the presenceof a RAFT precursor in a primarily water-based mixture. Electrochemicalstudies were performed to tune the redox properties of the silver–ligandcomplex and achieve an extremely high monomer conversion and graftingefficiency. This led to the grafting of a thermoresponsive polymerwith low dispersity and controlled molecular weight, which in turnallowed for the tuning of the thermal properties of the nanocellulose–polymercomposite. SANS analysis of the materials provides a clear model toexplain the effect of the polymer molecular weight on the thermoresponsiveand gelation properties of PNIPAM-<em>g</em>-CNF, where alower polymer molecular weight results in an ordered assembly of bundledfibers above the critical temperature.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"6 1","pages":"214–225"},"PeriodicalIF":6.7,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146203913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Doubling the Magnetorheological Effect of Magnetic Elastomers","authors":"Lukas Fischer,&nbsp;Andreas M. Menzel","doi":"10.1021/acspolymersau.5c00118","DOIUrl":"10.1021/acspolymersau.5c00118","url":null,"abstract":"<p>One of the most important properties of soft functionalizedmagneticcomposite materials in view of their technological potential is givenby the magnetorheological effect. It describes the change in rheologicalproperties such as the shear modulus by the application of externalmagnetic fields. We demonstrate how computational materials designcan support in approximately doubling the magnitude of this importantphenomenon for magnetic elastomers. The key is to work with two perpendicularmagnetic field directions. We expect future practical relevance ofour concept.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"6 1","pages":"157–163"},"PeriodicalIF":6.7,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146203955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solid–Liquid-Hysteresis Materials Based on Reversible Covalent Cross-Linking of Liquid Monomers","authors":"Thomas Höfer,&nbsp;Albert Rössler,&nbsp;Oliver I. Strube","doi":"10.1021/acspolymersau.5c00139","DOIUrl":"10.1021/acspolymersau.5c00139","url":null,"abstract":"<p>When a two-component liquid resin is cured, it usuallyends upin the solid state and cannot be transferred to the liquid state again.This work introduces a polymeric material, which cross-links covalentlyat ambient temperatures, but can still be liquefied again on demand.The mechanism is based on the well-known concept of reversible cross-links,e.g., via Diels–Alder-reactions, which allow de-cross-linkingat elevated temperatures. The presented material, however, differsfrom known variants by the fact that the non-cross-linked state isliquid at ambient conditions. Thus, the cross-linked solid materialcan be reversibly transferred to the liquid state again by heating.In contrast to classical melting, the material remains in the liquidstate after cooling for a prolonged time. It therefore shows a behaviorthat is reminiscent of a melting hysteresis but is rather based ona superposition of thermodynamics and kinetics. At room temperature,cross-linking occurs rather slowly, while it is massively acceleratedat raised temperatures. In contrast to supercooled liquids with aphysical melting hysteresis, materials with a herein described “chemicalliquefication hysteresis” are attractive for multiple applications,e.g., recycling, adhesives, coatings, or even polymeric bulk materials.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"6 1","pages":"315–324"},"PeriodicalIF":6.7,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146203934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}