Yan Du,Jian Shang,Zichao Xi,Jinxiao Wu,Longji Yuan,Huimin Yu,Huanyu Jin,Hui‐Ming Cheng
{"title":"Dynamic Active‐Hydrogen‐Buffering Interfaces Enable Fluctuation‐Resilient Selective Electrocatalytic Hydrogenation","authors":"Yan Du,Jian Shang,Zichao Xi,Jinxiao Wu,Longji Yuan,Huimin Yu,Huanyu Jin,Hui‐Ming Cheng","doi":"10.1002/adma.74910","DOIUrl":"https://doi.org/10.1002/adma.74910","url":null,"abstract":"ABSTRACT Renewable‐electricity‐driven electrocatalysis is difficult to maintain under steady‐state operation because of the intermittent, variable, and stochastic nature of renewable power. This challenge is particularly critical for selective electrocatalytic hydrogenation (ECH), such as phenol‐to‐cyclohexanone conversion in acidic media, where fluctuating operation can induce transient accumulation of active hydrogen intermediates, compromising product selectivity and energy efficiency. In this study, we develop a dynamic active‐hydrogen‐buffering interface strategy to construct fluctuation‐resistant electrocatalysts using the short‐chain surfactant butyltrimethylammonium bromide (BTAB). Under simulated power fluctuations in a flow cell, the BTAB‐modified catalyst maintains near‐steady‐state performance, achieving 90.1% cyclohexanone selectivity and 83.6% Faradaic efficiency (FE), and outperforms the unmodified system by 1.69‐fold in cyclohexanone FE under more drastic fluctuations. Mechanistic studies reveal that the BTAB layer weakens the interfacial hydrogen‐bond network and attenuates Grotthuss‐type proton relay, thereby regulating proton flux and buffering active hydrogen accumulation during current fluctuations. This suppresses competing hydrogen evolution and overhydrogenation to cyclohexanol while preserving phenol hydrogenation kinetics. Combined with techno‐economic analysis, this work establishes active‐hydrogen buffering as an interfacial strategy for maintaining selective electrosynthesis under dynamic operating conditions.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"49 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"High‐Performance Stretchable Field‐Effect Transistors Based on Intrinsically Flexible n‐Type Partially Conjugated Polymers Synthesized via Aldol Polycondensation","authors":"Qian Che,Weifeng Zhang,Jiadi Chen,Chang Cui,Zhihui Chen,Liping Wang,Gui Yu","doi":"10.1002/adma.74916","DOIUrl":"https://doi.org/10.1002/adma.74916","url":null,"abstract":"ABSTRACT Two intrinsically flexible conjugated polymers, PBT‐90 and PFBT‐90 , were designed and synthesized via aldol polycondensation. Both polymers incorporate a novel double‐flexible‐node unit, 5,5'‐bis(1,1,2,2‐tetrafluoro‐2‐(thiophen‐2‐yl)ethyl)‐2,2'‐bithiophene, which can reduce brittleness and enhance recoverability in both bulk polymers and processed films. Both polymers displayed n ‐type charge transport in transistors fabricated on a polyethylene terephthalate substrate, achieving high electron mobilities ( µ e ) of 3.85 and 4.56 cm 2 V −1 s −1 for PBT‐90 and PFBT‐90 , respectively, only slightly inferior to 5.44 and 6.37 cm 2 V −1 s −1 of their fully conjugated analogues, PBT‐100 and PFBT‐100 . Utilizing a self‐developed PET/CYTOP/AlO x three‐layer thin film transfer process, combined with orthogonal solvent design and interlayer protection strategies, we fabricated high‐performance stretchable transistors. The PFBT‐90 ‐based devices exhibited a record‐high µ e of 3.51 cm 2 V −1 s −1 in the pristine state. Under 100% strain, they retained a µ e > 2.86 cm 2 V −1 s −1 (>80% retention). The remarkable device performance originates from its suitable frontier molecular orbitals structure, low backbone glass transition temperature, and well‐balanced finitely conjugated backbone, where rigid conjugated segments ensure highly efficient charge carrier transport and flexible nonconjugated segments dissipate stress. Our findings offer a pivotal molecular design strategy and a versatile fabrication process for advanced stretchable organic electronics.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"32 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lei Wang,Jingxian Hua,Yizheng Tao,Jing Huang,Benxin Li,Yurong Luo,Yawei Gu,Lixiong Zhang,Weihong Xing,Yichang Pan
{"title":"Ultramicropore‐Matched Molecular Transport in Low‐Loading Mixed‐Matrix Membranes via Trace‐Oxygen‐Mediated Thermal Reorganization","authors":"Lei Wang,Jingxian Hua,Yizheng Tao,Jing Huang,Benxin Li,Yurong Luo,Yawei Gu,Lixiong Zhang,Weihong Xing,Yichang Pan","doi":"10.1002/adma.74936","DOIUrl":"https://doi.org/10.1002/adma.74936","url":null,"abstract":"ABSTRACT The complementary structural tunability of polymers of intrinsic microporosity (PIMs) and metal–organic frameworks (MOFs) redefines the design space for engineering precise transport channels in mixed‐matrix membranes (MMMs). Herein, we present that trace‐oxygen‐mediated thermal reorganization (TOTR) of PIM‐1 micropores enables MOF‐dominated gas transport in MMMs without requiring high filler loading. Spectroscopic analyses and molecular simulations reveal trace‐oxygen‐mediated radical processes that induce the PIM‐1 backbone rearrangement, together with triazine crosslinking and partial π‐conjugation extension, resulting in a contracted and homogenized ultramicropore distribution. Meanwhile, the dual‐interface design establishes a covalently coupled MOF–polymer interface, where the interfacial carboxylated PIM‐1 (cPIM‐1) layer co‐reorganizes with the polymer matrix to form an integrated microporous environment with suppressed defects and enhanced mechanical robustness. This coupled pore‐and‐interface regulation integrates PIM‐1 ultramicropores and MOF micropores into pore‐matched transport channels, enabling effective expression of MOF sieving capability at an ultralow filler loading of 2 wt.%. The resulting MMMs deliver approximately threefold enhancement in CO 2 /CH 4 and CO 2 /N 2 selectivity compared with PIM‐1 membranes, while maintaining high CO 2 permeability and improved resistance to physical aging and plasticization. This study may broaden the design concepts for advanced MMMs toward challenging molecular separations.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"5 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dynamic “On‐Demand and Sustainable” Passivation: Light‐Heat–Humidity Driven Molecular Isomerization for High‐Performance Perovskite Solar Cells","authors":"Chao Liu,Yingchen Li,Hongkun Cai,Jifeng Liu,Qinwen Guo,Zhiwen Xu,Juan Li,Jian Ni,Jianjun Zhang","doi":"10.1002/adma.74933","DOIUrl":"https://doi.org/10.1002/adma.74933","url":null,"abstract":"ABSTRACT Light, temperature, and humidity are critical external factors triggering phase separation in wide‐bandgap (WBG) perovskite solar cells (PSCs). Conventional passivators only achieve static and short‐term defect passivation and cannot address the continuously generated dynamic defects and ion migration during device operation. In this work, 1,3,3‐trimethylindolino‐6‐bromobenzopyrylospiropyran (TBS) was introduced into the perovskite bulk. This molecule isomerized into the ring‐opened O‐TBS structure with abundant active sites under light, heat, and humidity stimuli, thereby enabling on‐demand passivation of the device under various environments, ultimately achieving a synergistic balance between static passivation of pristine defects and dynamic repair of newly formed defects. Meanwhile, as a built‐in dipole, O‐TBS can accelerate carrier extraction and separation, and inhibit phase separation by optimizing the phase structure at the initial stage of nucleation and crystallization. Based on this strategy, a photoelectric conversion efficiency (PCE) of 23.83% was achieved in PSCs with a bandgap of 1.67 eV. Unencapsulated devices retained 91% of their initial efficiency after 1000 h of maximum power point tracking (MPPT) under AM 1.5G illumination, and maintained 88% and 87% of their efficiency after continuous testing for 1000 h at 85°C and 60% humidity, respectively, significantly enhancing the optoelectronic performance and long‐term stability of the devices.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"29 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Negative Differential Resistance Electronics: From Nonmonotonic Transport Physics to Functionally Compressed Computing","authors":"Ying Luo,Weixiao Sun,Yongbiao Zhai,Sunyingyue Geng,Qingsen Yu,Haitao Zhou,Ziyu Lv,Guanglong Ding,Ye Zhou,Su‐Ting Han","doi":"10.1002/adma.74921","DOIUrl":"https://doi.org/10.1002/adma.74921","url":null,"abstract":"ABSTRACT Negative differential resistance (NDR), a counterintuitive transport phenomenon in which current decreases with increasing voltage, challenges conventional transistor‐centric computing paradigms based on monotonic electronic transport and opens new opportunities for beyond‐Boolean computing. Here, we present a comprehensive and concept‐driven review of NDR devices spanning memristor‐based, diode‐type, and transistor‐based platforms. We establish a unified framework that links diverse NDR mechanisms, including resonant tunneling, electrothermal feedback, defect dynamics, and ferroelectric polarization, through their shared nonmonotonic transport characteristics. Beyond device‐level classification, we further propose NDR as a physical foundation for functionally compressed computing, in which circuit functionalities traditionally implemented using multiple transistors and feedback networks can be partially embedded into the intrinsic nonlinear response of a single NDR device or compact device unit. We further compare representative NDR technologies using common performance metrics and analyze the key challenges that currently limit large‐scale deployment, including variability, CMOS compatibility, compact modeling, and the distinction between intrinsic NDR behavior and measurement‐induced artifacts. Finally, we discuss future opportunities in materials‐by‐design, heterogeneous and 3D integration, physics‐informed modeling, and closed‐loop intelligent systems. By connecting nonmonotonic transport physics with circuit and system‐level functionality, NDR electronics offers a promising route toward compact and energy‐efficient computing architectures in the post‐Moore era.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"51 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tae Yeon Kim,Shashank Ojha,Bridget R. Denzer,Michael Xu,Ching‐Che Lin,Jesse Schimpf,Jaegyu Kim,Liyan Wu,Ramamoorthy Ramesh,Ilya Grinberg,Jonathan E. Spanier,James M. LeBeau,Lane W. Martin
{"title":"A Multiferroic Morphotropic Phase Boundary","authors":"Tae Yeon Kim,Shashank Ojha,Bridget R. Denzer,Michael Xu,Ching‐Che Lin,Jesse Schimpf,Jaegyu Kim,Liyan Wu,Ramamoorthy Ramesh,Ilya Grinberg,Jonathan E. Spanier,James M. LeBeau,Lane W. Martin","doi":"10.1002/adma.74920","DOIUrl":"https://doi.org/10.1002/adma.74920","url":null,"abstract":"ABSTRACT Bismuth ferrite (BiFeO 3 ) thin films possess large ferroelectric polarization and antiferromagnetic order, yet their magnetoelectric coupling is limited by weak intrinsic magnetization. Here, a multiferroic morphotropic phase boundary (MPB) is demonstrated wherein the crystal structure, polarization, and magnetic order simultaneously evolve across a chemically induced phase boundary in strain‐engineered (1− x )BiFeO 3 ‐( x )BaTiO 3 thin films. Between 0.1 < x < 0.2, the crystal structure evolves from a monoclinic phase to a newly stabilized tetragonal phase through an intermediate mixed‐phase region. This structural transition is accompanied by concurrent changes in magnetic order, resulting in dramatically enhanced functional responses as compared with those of BiFeO 3 . Specifically, films with x = 0.2 exhibit larger electromechanical strains (≈ 0.3%, about three‐times larger than BiFeO 3 ) and a significantly enhanced magnetoelectric‐coupling coefficient (α ME ≈ 416 mV cm −1 Oe −1 , nearly 1000‐ and 19‐times larger than bulk and thin‐film BiFeO 3 , respectively). These enhancements diminish beyond the MPB ( x > 0.2) and arise from polarization rotation and evolving spin configurations driven by the near degeneracy of competing ferroic states at the multiferroic MPB. These results establish a rare multiferroic MPB where both the polar and magnetic order evolve simultaneously, providing a promising strategy for designing materials with strongly coupled ferroic order parameters.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"82 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Lab‐in‐a‐Tube System Integrating Hierarchically Wrinkled Electrodes and DNAzyme‐Functionalized Beads for Diagnosis of\u0000 Clostridioides difficile\u0000 Infection","authors":"Survanshu Saxena,Soyeon Lee,Youngeun Choi,Jonathan L'Heureux‐Hache,Jiaying Liu,Sadman Sakib,Sara M. Imani,Marek Smieja,Yingfu Li,Todd Hoare,Leyla Soleymani","doi":"10.1002/adma.74907","DOIUrl":"https://doi.org/10.1002/adma.74907","url":null,"abstract":"ABSTRACT The diagnosis of bacterial infections remains slow because many existing methods rely on enrichment steps such as nucleic acid amplification or growth culture. RNA‐cleaving DNAzymes offer a promising route to accelerate bacterial diagnosis because they can be selected and programmed to specifically recognize disease‐causing bacteria and generate reporter DNA strands for signal readout. However, integrating DNAzymes into biosensors capable of analyzing complex biological matrices remains challenging, as matrix‐associated interferents can destabilize DNAzymes, suppress catalytic activity, and compromise signal detection. Here, we integrate redox RNA‐cleaving DNAzymes housed on antifouling magnetic beads with a lab‐in‐a‐tube platform that incorporates hierarchically structured sensing electrodes within a tubular flow cell for enrichment‐free detection of Clostridioides difficile in stool samples. The combination of antifouling magnetic beads and fluidic replenishment of DNA reporters across the hierarchical electrodes reduces nonspecific binding and enhances reporter capture efficiency, achieving a limit of detection as low as 1.3 × 10 2 CFU mL −1 in buffer. Using an optimized stool‐processing procedure, the sensor enabled detection of C. difficile infection in 38 human stool samples, demonstrating 94.7% concordance with the current gold‐standard polymerase chain reaction method. These results demonstrate a promising platform for enrichment‐free, point‐of‐care diagnosis of infectious diseases in clinic settings.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"9 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}