Langmuir最新文献

{"title":"Interfacial Engineering of Amide-Based Langmuir–Blodgett Films for Sustainable Multifunctional Applications","authors":"Ying Tian,&nbsp;Pengfei Bian,&nbsp;Na Gao,&nbsp;Yan Chen,&nbsp;Adan Li,&nbsp;Qingxian Jin,&nbsp;Mingli Wang,&nbsp;Tifeng Jiao","doi":"10.1021/acs.langmuir.6c05229","DOIUrl":"10.1021/acs.langmuir.6c05229","url":null,"abstract":"<p>Amide-containing organic molecules are widely used asbuildingblocks for ultrathin films because of their diverse intermolecularinteractions and structural flexibility. In this work, four amide-basedsmall molecules were assembled into Langmuir–Blodgett (LB)films, while Congo Red (CR), Rhodamine B (RhB), and Safranin T (ST)were added to the subphase to regulate interfacial assembly at theair–water interface. Structural characterization shows thatthe introduction of dyes into the subphase leads to distinct aggregationbehaviors and surface morphologies in the resulting films. RhB-containingfilms generally tend to form more interconnected aggregate morphologiesin several molecular systems. Several RhB-containing systems showhigher photocurrent responses and smaller semicircle diameters inelectrochemical impedance spectroscopy (EIS) measurements. CR-containingsystems exhibit stronger Raman signals and more pronounced spectralvariations upon exposure to acidic and basic vapors. The enhancedRaman response may be associated with local analyte accumulation,molecular interactions, and possible resonance effects under 532 nmexcitation. In contrast, ST-containing systems exhibit structure-dependentbehavior, resulting in distinct aggregation morphologies and photoelectrochemical(PEC) behaviors. Overall, dye-assisted interfacial engineering effectivelymodulates the assembly and functional responses of amide-based LBfilms. This work provides insights into multicomponent organic ultrathinfilm systems and may guide the design of sustainable photoelectrochemicalmaterials.</p>","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"42 41","pages":"31104–31116"},"PeriodicalIF":4.4,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149092054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Change in the Properties of a Magnetic Nanoparticle–Polymer Composite Langmuir Film at the Air–Water Interface via the Polymer Ratio and the Use of a Weak Magnetic Field","authors":"Cathy E. McNamee,&nbsp;Yuto Yamada,&nbsp;Daisuke Usui,&nbsp;Yuto Morioka,&nbsp;Homare Arima,&nbsp;Shinpei Yamamoto","doi":"10.1021/acs.langmuir.6c04240","DOIUrl":"10.1021/acs.langmuir.6c04240","url":null,"abstract":"<p>We aimed to create magnetic polymericfilms with the desired physicalproperties by varying the ratio of a hydrophobic polymer (poly(isobutylmethacrylate), PIBM) to hydrophobic Fe₃O₄ nanoparticles(NPs) at an air–water interface and by applying a weak magneticfield. The effect of adding PIBM to the NPs was first determined bystudying 100% NP, 100% PIBM and mixed PIBM-NP Langmuir films in theabsence of a magnetic field. In the case of the 100% NP or PIBM films,the NPs and PIBM formed aggregates at the air–water interface.In the case mixed PIBM-NP films, the NPs aggregates were concludedto distributed between the PIBM aggregates. Increasing the ratio ofPIBM in the mixed film (χ_pol) increased the NP aggregatesizes, but decreased the packing density of the NP aggregates. Applyinga magnetic field to a 100% NP film increased the NP aggregation. Amagnetic field did not change the PIBM film, a result explained bythe nonmagnetic nature of PIBM. In the case of a mixed film, the magneticfield tended to homogenize the size of the NP aggregates. The changein the films by a magnetic field increased in the order of χ_pol = 1 (100% PIBM) &lt; χ_pol = 0 (100% NP)≈ χ_pol = 0.27 &lt; χ_pol =0.77 &lt; χ_pol = 0.53. The magnetic field inducedchanges therefore increased with a decreased NP packing density, butdecreased when the number of NPs in the film became too low. The lowviscosity of PIBM was concluded to allow the magnetic field to movethe NPs in the film. However, the magnetic field induced changes becameless obvious when the number of NPs in the film is small. The propertiesof a Fe₃O₄ NPs film can therefore be variedvia the ratio of polymer in the film and the application of a weakmagnetic field.</p>","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"42 41","pages":"30875–30889"},"PeriodicalIF":4.4,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149151118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular Mechanism of Amino Acids for Stabilizing Protein Dispersions","authors":"Takahiro Fujii,&nbsp;Ryuhei Harada","doi":"10.1021/acs.langmuir.6c04544","DOIUrl":"10.1021/acs.langmuir.6c04544","url":null,"abstract":"<p>In living cells, numerous biomolecules coexist in highlycrowdedenvironments while maintaining their biological functions. Under suchconditions, biomolecules are constantly exposed to the risk of aggregation,leading to the loss of their biological function. To mitigate theserisks, cells employ various strategies, such as the accumulation ofsmall molecules in the cytosol. For example, free amino acids (AAs)are well-known to inhibit protein association and stabilize proteindispersions. A recent experimental study using a simple theoreticalmodel suggested that the adsorption of AAs onto protein surfaces inducesrepulsive interactions between proteins. However, the molecular mechanismby which the adsorption of AAs inhibits protein association remainsunclear. In this study, we conducted molecular dynamics simulationsto investigate the molecular mechanisms by which AAs inhibit proteinassociation. As a model system, insulin was simulated in the presenceof a 1 M proline solution using both monomeric and dimeric models.For the monomeric system, the adsorption behavior of proline on theprotein surface was characterized, revealing that proline moleculespreferentially and uniformly adsorbed onto the protein surface. Forthe dimeric system, we examined how proline adsorption influencesprotein association by calculating the potential of mean force (PMF)and the osmotic second virial coefficient. These analyses demonstratethat proline induces net repulsive interactions among proteins, whichare consistent with experimental observations. Furthermore, the numberof proline molecules at the protein–protein interface reacheda maximum around the intermediate state in the PMF prior to proteinassociation. This accumulation of interfacial proline molecules increasesthe effective free energy required for further protein association.In conclusion, this study provides a direct molecular-level mechanismby which the adsorption of AAs stabilizes protein dispersions.</p>","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"42 41","pages":"30988–30998"},"PeriodicalIF":4.4,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149152103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Defect- and Composite-Engineered Free-Standing Nanoporous Graphene Film for High-Efficiency Solar-Driven Water Evaporation","authors":"Jiahui Zhang,Haoyuan Yu,Qifeng Ruan,Hua-Jun Qiu","doi":"10.1021/acs.langmuir.6c03897","DOIUrl":"https://doi.org/10.1021/acs.langmuir.6c03897","url":null,"abstract":"Solar-driven interfacial evaporation has emerged as a promising strategy for sustainable freshwater production. However, simultaneously achieving efficient photothermal conversion and optimized water transport within a single material system remains challenging. Herein, three-dimensional (3D) nitrogen-doped nanoporous graphene (NG) with tunable microstructures is synthesized by tuning the composition of Ni-based nanoporous templates via chemical vapor deposition (CVD). The defect density of the CVD-grown NG clearly increases with the number of components (or entropy) of the nanoporous alloys, reducing thermal conductivity, and promoting heat localization. Furthermore, when Mo element is included in the nanoporous alloy template (np-MnNiCoFeMo), MoC forms during CVD, inducing secondary nanoholes on the graphene tube walls and creating more defects. By selectively removing the alloy template, the obtained nanoporous graphene/MoC composite (5-NG@MoC) exhibits synergistically enhanced photothermal conversion due to the combined light absorption from both components of the composite. Consequently, 5-NG@MoC achieves a broadband solar absorption of 94% (250–2500 nm) and delivers an evaporation rate of 1.76 kg·m–2·h–1 with a photothermal conversion efficiency of 92.8% under one-sun irradiation. The free-standing and ultralight composite also demonstrates excellent stability and salt resistance during seawater desalination. This work provides an effective strategy for engineering graphene-based photothermal materials toward high-efficiency water evaporation.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"73 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bio-Inspired Superhydrophilic Urchin-Like Supramolecular Structures Formed by Co-Assembly of Simple Metabolites","authors":"Ruth Aizen,Om Shanker Tiwari,Gal Finkelstein-Zuta,Pini Shekhter,Davide Levy,Ehud Gazit","doi":"10.1021/acs.langmuir.6c03644","DOIUrl":"https://doi.org/10.1021/acs.langmuir.6c03644","url":null,"abstract":"Numerous natural surfaces exhibit unique wetting behaviors, typically attributed to a synergy between two-tier micro/nanoscale hierarchical structures and specific material chemistry. Replicating these surfaces is often challenging because it relies on harsh, complex synthesis methods for inorganic materials. As a versatile extension of traditional self-assembly, heterogeneous molecular assembly offers a programmable route toward complex hierarchical biomimicry. Here, we study the coassembly of two simple metabolites, riboflavin and 2,6-diaminopurine, to demonstrate this approach for constructing functional materials. We found that the co-assembled structures exhibit an urchin-like morphology and employed various characterization methods to investigate the interaction between the two metabolite building blocks. The co-assembled structures exhibit superhydrophilic characteristics that were not achieved with unimolecular components, underscoring the advantages of a co-assembled system. Although the unimolecular components are hydrophilic and possess surface hydrophilic groups, as demonstrated by X-ray photoelectron spectroscopy (XPS) analysis, this alone is insufficient to construct a superhydrophilic surface. This was confirmed by measuring the water contact angle (WCA) of the coated hydrophilic glass coverslip in contact with the co-assembled structures and the unimolecular components, which rendered the glass superhydrophilic. Inspired by the amphiphilic nature of the Namib desert beetle’s back used for water harvesting, we coated a hydrophobic surface with the co-assembled structures. This modification transformed the surface to superhydrophilic, highlighting the importance of surface texture in conjunction with surface chemistry in establishing superwetting behavior. This study provides important insights into the interplay between the coassembly of metabolite building blocks and functional materials and establishes an innovative yet simple design route for developing functional surfaces.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"74 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving Ionic Current Rectification in Misaligned Janus Bilayer Nanoporous Graphene through Tuning Electric Field Direction","authors":"Shuhao Shangguan,&nbsp;Tao Zhang,&nbsp;Shuping Zhang,&nbsp;Jiaye Su","doi":"10.1021/acs.langmuir.6c05284","DOIUrl":"10.1021/acs.langmuir.6c05284","url":null,"abstract":"<p>In recent years, nanoporous graphene has shown greatpotentialin nanofluidic devices and ion separation applications. However, inmultilayer architectures, pore misalignment significantly suppressesion transport efficiency, and its underlying mechanism remains insufficientlyunderstood. To address this issue, this study employs molecular dynamicssimulations to systematically examine the effect of pore alignmentand electric field direction on ionic current rectification (ICR)in Janus bilayer nanoporous graphene (NPG). The results show that,with increasing pore offset, ions become strongly enriched in theNPG interlayer region, forming a localized high-concentration environmentthat hinders ion migration and induces an ICR inversion. Further analysisreveals that, under a fixed pore offset, tuning the angle betweenthe electric field and the membrane normal can effectively reconstructthe ionic distribution in the NPG, thereby enhancing transport asymmetrybetween forward and reverse directions. As a result, the rectificationinversion caused by pore misalignment can be recovered, yielding amaximum ICR ratio of approximately 30 in the fixed-functional-groupmodel. Notably, this enhancement in ICR is accompanied by a monotonicdecrease in electropumping efficiency, suggesting that ionic rectificationand directional water transport are not directly correlated. Thesefindings demonstrate that both pore offset and electric field orientationserve as key tunable parameters governing ICR performance in NPGs,providing a new strategy for the design of high-performance and controllableICR devices.</p>","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"42 41","pages":"31130–31140"},"PeriodicalIF":4.4,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149091991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tough Interconnected Dual Conductive Network in MWCNTs/MXene/CNFs Cement Mortar for Enhanced Electromechanical Synergy and Self-Sensing Performance","authors":"Lei Fan,&nbsp;Wang Zhang,&nbsp;Xiaohan Ji,&nbsp;Chengtao Wu,&nbsp;Mengya Li","doi":"10.1021/acs.langmuir.6c03140","DOIUrl":"10.1021/acs.langmuir.6c03140","url":null,"abstract":"<p>A toughinterconnected dual conductive network was constructedin cement mortar through the synergistic incorporation of one-dimensionalmultiwalled carbon nanotubes (MWCNTs), two-dimensional MXene nanosheets,and carboxylated cellulose nanofibers (CNFs). To minimize nanoparticleagglomeration and improve conductive-network continuity, a combinedstrategy integrating ultrasonic predispersion, in situ directionalassembly, and vacuum-assisted incorporation was adopted to regulatethe spatial organization of conductive nanocomponents within the cementitiousmatrix. The effects of different component dosages on electrical resistivity,stress sensitivity coefficient, mechanical properties, and microstructuralevolution were systematically investigated. The results showed thatthe incorporation of MXene significantly optimized the conductive-networktopology and reduced the percolation threshold of the ternary systemto 1.76 × 10^–4, corresponding to a 63.2% decreasecompared with the single-MWCNTs system. Among all groups, T30F30M25exhibited the best electromechanical synergy, with a 27.58% reductionin resistivity, a stress sensitivity coefficient of 0.081%/MPa, andincreases of 27.51% and 60.59% in compressive and flexural strengths,respectively, relative to the control group. Multiscale characterizationsdemonstrated that MXene promoted AFt and C–S–H gel formationand refined CH crystallites, while MWCNTs provided crack-bridgingpathways and CNFs improved conductive-network continuity through sterichindrance and interfacial regulation. Furthermore, electromechanicaldamage evolution analysis revealed that the bioinspired dual conductivenetwork effectively suppressed crack-induced conductive-path disruptionand enhanced conductive-network stability during crack propagation.Through the synergistic interaction among MXene, MWCNTs, and CNFs,a spatially continuous fiber–nanosheet interconnected architecturewas gradually established within the cement matrix, enabling the simultaneousenhancement of conductivity, self-sensing capability, mechanical performance,and electromechanical stability. This study provides a new biomimeticstrategy for the structural design and multiscale regulation of high-performanceself-sensing cement-based materials.</p>","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"42 41","pages":"30572–30589"},"PeriodicalIF":4.4,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149092053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interfacial Spatial Heterogeneity-Associated Mesoscale Friction Instability at a Diamond–Cu Interface","authors":"Haoran Zhang,&nbsp;Rui Xu,&nbsp;Qijun Zheng,&nbsp;Minsu Liu,&nbsp;Jianli Wang","doi":"10.1021/acs.langmuir.6c04218","DOIUrl":"10.1021/acs.langmuir.6c04218","url":null,"abstract":"<p>Mesoscale interfacial sliding responses bridge nanoscalesingle-asperitysliding mechanisms and macroscopically averaged frictional responses,enabling local pinning–depinning processes to be resolved withina finite contact region. Recent studies on strongly disordered roughinterfaces have revealed statistical features of mesoscale stick–slip,but how such interfacial sliding responses are affected by environmentaland mechanical conditions, and how they relate to interfacial morphology,remain unclear. Here, we investigate mesoscale stick–slip ata diamond–Cu interface using a custom-built probe sliding systemunder controlled environments and loading conditions. Air–vacuumcomparison revealed that ambient exposure amplified and destabilizedthe interfacial response, motivating subsequent vacuum-based measurements.Under vacuum, normal preload and sliding speed mainly changed theabsolute force response of stick–slip, while the recurrencelength and dominant spectral scale remained within a similar micrometer-scalerange. Further comparison with Cu surface topography showed that themain spectral band of the sliding response overlapped with weak topographicfeatures and fell within the autocorrelation-based surface correlationrange. These results indicate that mesoscale stick–slip recurrenceis associated with interfacial spatial heterogeneity, providing insightinto the link between interfacial morphology and sliding stabilityat diamond–metal contacts.</p>","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"42 41","pages":"30863–30874"},"PeriodicalIF":4.4,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149150902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lower Critical Solution Temperature-type Phase Separation Behavior of Aqueous Solutions of Structurally Uniform Stereoregular Dense Triazole Oligomers Bearing N-ethyl-N-methylamide Side Chains","authors":"Naoki Makita,Takehiro Yoshikawa,Masaki Nakahata,Yuri Kamon,Akihito Hashidzume","doi":"10.1021/acs.langmuir.6c04927","DOIUrl":"https://doi.org/10.1021/acs.langmuir.6c04927","url":null,"abstract":"The lower critical solution temperature (LCST)-type phase separation behavior of aqueous solutions of structurally uniform stereoregular dense triazole oligomers bearing N-ethyl-N-methylamide side chains was investigated using two series of oligomer samples: TBDMS-syndio-ME nOH (n = 4, 6, and 8), bearing a terminal t-butyldimethylsilyl group, and syndio-ME nOH (n = 2, 4, 6, and 8), which were synthesized by stepwise copper(I)-catalyzed azide–alkyne cycloaddition (CuAAC). Transmittance measurements in the heating and cooling processes with stirring at 500 rpm demonstrated that TBDMS-syndio-ME nOH (n = 4, 6, and 8) exhibited LCST-type phase separation with an unusual apparent “inverse” hysteresis, in which the transmittance recovered in the cooling process at temperatures higher than the clouding point temperature (Tcloud) observed in the heating process. On the other hand, syndio-ME nOH samples remained completely soluble over the temperature range examined. Steady-state fluorescence measurements using Nile Red as a fluorescence probe indicated that TBDMS-syndio-ME nOH (n = 4, 6, and 8) samples formed micelles with lower apparent critical micelle concentrations (0.0047, 0.015, and 0.040 g L–1, respectively) in water. Dynamic light scattering measurements revealed that the micelles with apparent hydrodynamic radii of ca. 1–4 nm rapidly aggregated into micrometer-sized species around Tcloud in the heating process and were regenerated at temperatures < Tcloud in the cooling process, showing no intrinsic inverse hysteresis. Preliminary molecular dynamics simulations further indicated gradual dehydration and compaction of the micelles with increasing temperature. Based on the experimental and simulation data, we propose that the apparent “inverse” hysteresis originates from the formation of highly hydrated amorphous microdroplets produced through aggregation, rearrangement, and fusion of micelles during phase separation. The subsequent decrease in interfacial area and refractive index contrast leads to recovery of transmittance without complete dissolution of the microdroplets of the condensed phase.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"7 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Polyamidoamine Demulsifier-Functionalized Polyvinylidene Fluoride Microfiltration Membrane for Antifouling Oil/Water Emulsion Separation","authors":"Xinfan Zhang,Junling Qin,Yuyue Mo,Feng Zhang,Zhenggong Wang,Jian Jin","doi":"10.1021/acs.langmuir.6c03739","DOIUrl":"https://doi.org/10.1021/acs.langmuir.6c03739","url":null,"abstract":"The treatment of oily wastewater has emerged as a critical environmental issue due to the prevalence of oil spills and the discharge of industrial organic pollutants. However, membrane fouling is a major challenge for conventional separation methods, leading to the decreased efficiency and increased maintenance costs. Single hydrophilic modification offers an opportunity to prevent oil fouling but fails to avoid severe permeate flux decline. Herein, we propose a strategy to integrate demulsification and hydrophilicity to a single membrane via incorporation of the polyamidoamine (PAMAM) demulsifier into the hydrophilic tannic acid (TA)-modified membrane through the Schiff base reaction, aiming to alleviate membrane fouling and flux decline during oil/water emulsion separation. The synergy between demulsification and hydrophilicity establishes an oil-repellent barrier surface to prevent oil droplet adhesion on the membrane surface or being squeezed into the membrane pores. When separating oil/water emulsions, the membranes not only showed high separation efficiency with oil content less than 8 ppm in filtrate but demonstrated outstanding antifouling performance with low flux decline ratio (DRt) of 16% even at the high permeate flux of 3679 L m–2 h–1 bar–1, while showing a flux recovery ratio as high as 99.6%, hard to achieve by traditional hydrophilic membranes. In addition, the effect of surface roughness on the demulsification and antifouling separation performance of membranes was also investigated by introducing SiO2 nanoparticles to create a rougher surface. The TA/SiO2-PAMAM membrane with rougher surface exhibited a higher flux DRt of 28%, while showing better demulsification performance with smaller droplet size (∼0.8 nm) in filtrate. This research paves the way for designing membranes for continuous and stable oil/water emulsion separation.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"7 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}