Sebastian Liebl, Christoph Griesser, Sergio Díaz-Coello, Toni Moser, Philip Eck, Daniel Werner, Julia Kunze-Liebhäuser, Engelbert Portenkirchner
{"title":"Redox-Selective Control of Perylene Diimide Enables Fast, Durable Aqueous Sodium-Ion Storage","authors":"Sebastian Liebl, Christoph Griesser, Sergio Díaz-Coello, Toni Moser, Philip Eck, Daniel Werner, Julia Kunze-Liebhäuser, Engelbert Portenkirchner","doi":"10.1021/acsami.6c16356","DOIUrl":"10.1021/acsami.6c16356","url":null,"abstract":"<p>Confining the redox activity of perylenetetracarboxylic diimide (PTCDI) to the single-electron neutral/radical-anion couple enables ultrafast, durable aqueous sodium-ion storage. Differential electrochemical mass spectrometry and comparative OCP measurements identify hydrogen evolution and oxygen-associated reoxidation as self-discharge pathways of the dianion, motivating operation within a restricted potential window. XPS and EDX measurements support Na-ion coordination to reduced carbonyls as the principal charge-compensation mechanism. In a symmetric PTCDI cell, the selected redox couple retains 88% of its capacity after more than 19,000 cycles with near-unity coulombic efficiency. At nominal charge times of 60 and 2 s, the electrode retains 86 and 41% of its theoretical capacity, respectively, demonstrating ultrafast kinetics without sacrificing durability. These results establish redox-selective control as a design strategy for aqueous carbonyl electrodes whose deeper reduction approaches the stability limit of water.</p>","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"18 41","pages":"56212–56222"},"PeriodicalIF":7.8,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149126107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Electron-Sustained Adsorption–Reduction Interfaces for Precious Metal Recovery","authors":"Xuemin Chen, Siying He, Jaslyn Ru Ting Chen, Qi-Zhi Zhong, Yan Lv","doi":"10.1021/acsami.6c16052","DOIUrl":"10.1021/acsami.6c16052","url":null,"abstract":"<p>Precious metal recovery from secondary resources is increasingly important for securing a sustainable supply of critical materials, yet conventional adsorption–reduction systems remain constrained by the finite electron-donating capacity of redox-active adsorbents. Electron-sustained adsorption–reduction (ESAR) overcomes this limitation by continuously supplying electrons through light-driven, electrically driven, or self-powered processes, thereby sustaining interfacial reduction and enabling cumulative recovery beyond conventional adsorption limits. This perspective examines redox-active adsorption interfaces, external electron supply, and electron utilization in ESAR systems. It further explains how ESAR shifts the design focus from maximizing adsorption capacity to regulating interfacial electron supply, transport, and consumption. We highlight improving electron-use efficiency, regenerating active sites, enabling continuous metal release, and directing metal nucleation and growth as key priorities for advancing ESAR into a scalable platform for precious metal recovery and functional materials synthesis.</p>","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"18 41","pages":"55753–55768"},"PeriodicalIF":7.8,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149134022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Nanostructured Quercetin-Lipid Carrier on 3D Printed Scaffolds for Improved Bone Regeneration","authors":"Priya Kushram, Susmita Bose","doi":"10.1021/acsami.6c06921","DOIUrl":"10.1021/acsami.6c06921","url":null,"abstract":"<p>Musculoskeletal defects remain difficult to treat because current grafts often have limited supply, donor-site morbidity, risk of immune reaction, or insufficient local biological stimulation. To address this problem, this study developed 3D-printed β-tricalcium phosphate (TCP) scaffolds loaded with quercetin-loaded nanostructured lipid carriers (Que-NLCs) to combine an osteoconductive ceramic structure with local delivery of a natural osteogenic and anti-resorptive compound. Que-NLCs provided controlled release for up to 21 days and reduced the initial burst release compared with free Que at both pH 5.0 and 7.4. At pH 5.0, release was ∼40% for Que and ∼33% for Que-NLCs, while at pH 7.4, release was ∼32% for Que and ∼26% for Que-NLCs. In vitro studies showed that Que-NLC-loaded scaffolds increased osteoblast viability by ∼28.6%, increased alkaline phosphatase activity by 33% by day 11, and reduced osteoclastic activity by 56% by day 21. RT-qPCR further showed up to 4-fold increases in osteogenic markers and up to 60% reduction in osteoclastogenesis-related genes. In a 6-week rat distal femur model, Que-NLC scaffolds increased new bone formation by ∼1.9-fold compared with TCP. These results show that Que-NLC-TCP scaffolds provide a localized, controlled drug-delivery platform to improve bone regeneration in non-load-bearing defects.</p>","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"18 41","pages":"55793–55805"},"PeriodicalIF":7.8,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149151113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dual-State Tumor-Activated RNA Delivery for Tumor-Selective and Precision Therapy","authors":"Yuanshuai Song,Tian Jiang,Xin Shen,Wanphiwat Chintrakulchai,Koki Yanagida,Keisuke Iida,Motoaki Kobayashi,Kyohei Muguruma,Yuto Honda,Haochen Guo,Hiroyasu Takemoto,Yutaka Miura,Nobuhiro Nishiyama","doi":"10.1021/acsami.6c16995","DOIUrl":"https://doi.org/10.1021/acsami.6c16995","url":null,"abstract":"RNA therapeutics hold transformative potential for precision oncology; however, their systemic application remains constrained by a fundamental tradeoff between prolonged circulation stability and efficient intracellular activation. Conventional polyethylene glycol (PEG)-based carriers provide antifouling protection but lack tumor responsiveness, resulting in limited tumor accumulation and suboptimal gene expression. In this study, we developed a nanosystem, the dual-state tumor-activated RNA platform (D-STAR), which enables a dynamic transition from a stealth circulatory state to an activated transfection state through stepwise environmental alternation by recognizing a narrow pH window. At physiological pH, D-STAR maintains a negative surface potential to minimize nonspecific interactions and extend its blood circulation. Within the tumor microenvironment and endo-/lysosomal compartments, progressive protonation induces charge reversal and strengthens cationic activation, thereby enhancing tumor retention, cellular uptake, and cytoplasmic mRNA release. The systemic administration of D-STAR enabled tumor-selective mRNA expression with limited off-target organ distribution and markedly enhanced intratumoral reporter activity compared with PEG-based controls. The therapeutic delivery of human neutrophil elastase mRNA suppressed tumor growth and prolonged survival in a CT26 syngeneic model without systemic toxicity. Collectively, D-STAR establishes a dual-state adaptive RNA delivery framework that decouples systemic stability from activation potency, thereby offering a generalizable strategy for context-responsive precision RNA therapeutics.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"33 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149225991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ionic-Liquid-Based Engineering of MOF Membranes: Tuning from H2- to CO2-Selective","authors":"Zhijun Zhao,Pengcheng Xiong,Lars Heinke","doi":"10.1021/acsami.6c13949","DOIUrl":"https://doi.org/10.1021/acsami.6c13949","url":null,"abstract":"Reprogramming the transport preference of crystalline membranes offers a useful strategy for adapting a single membrane platform to different gas-separation tasks. Herein, we report ionic liquid (IL) engineering of pure ZIF-8 membranes to switch H2/CO2 transport from H2- to CO2-preferential behavior. A continuous ZIF-8 membrane was first fabricated on an anodic aluminum oxide support by cathodic deposition, followed by the loading of an IL of type 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([BMIM][TFSI]). The compact, well-intergrown, and crystalline ZIF-8 membrane was preserved after IL incorporation, and vibrational spectroscopy provided evidence for molecular interactions between confined [BMIM][TFSI] and the ZIF-8 framework. Gas-permeation measurements revealed that increasing IL loading decreased both H2 and CO2 permeances, indicating an increased transport resistance caused by partial pore occupation. However, the H2 permeance decreased significantly more rapidly than the CO2 permeance. The H2/CO2 selectivity decreased from 3.6 for the pristine ZIF-8 membrane to approximately 0.3 at 15 vol % ionic-liquid loading, corresponding to a CO2/H2 selectivity close to 3. The separation reversal originates from the combined effects of IL-induced pore narrowing and preferential CO2 affinity. This work demonstrates that confined ILs can reprogram adsorption–diffusion coupling in MOF membranes and provides a route toward process-adaptive gas-separation membranes.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"16 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149225990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Stage-Associated Efficacy of Systemically Administered Neural Stem Cell-Derived Exosomes in Ischemic Stroke through the Prevention of Cx43 Degradation","authors":"Ze-Feng Yang,Lu Li,Xiao-Yu Qiu,Yao-Sheng Li,Juan-Juan Zheng,Yun-Fei Dong,Xin-Chi Jiang,Jian-Qing Gao","doi":"10.1021/acsami.6c08991","DOIUrl":"https://doi.org/10.1021/acsami.6c08991","url":null,"abstract":"Ischemic stroke pathology is highly dynamic, making the optimal timing for biological interventions highly elusive. This study investigated the stage-associated therapeutic efficacy of neural stem cell-derived exosomes (NSC-Exos) for cerebral ischemia–reperfusion. The in vivo evaluations identified a restricted therapeutic window closely associated with the temporal evolution of the ischemic microenvironment. Early exosome intervention (4 or 24 h post-ischemia) significantly reduced infarct volume, restored blood–brain barrier integrity, and improved neurological functional recovery. In contrast, delayed administration (48 h) failed to reduce the mortality rate and provide meaningful neuroprotection. To examine the molecular basis of this time dependence, we integrated temporal proteomic profiling of the ischemic penumbra with small RNA sequencing of NSC-Exos. The analytical and functional data suggest that early NSC-Exo delivery transfers miR-9-5p to suppress Nedd4 expression, thereby restoring the Connexin 43 protein pool and stabilizing the astrocytic network to halt initial microenvironmental collapse. Collectively, this study underscores the critical importance of intervention timing and provides a potential translational strategy for utilizing NSC-Exos as a targeted, stage-specific therapy in acute ischemic stroke.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"88 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149225993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhu Gao,Zhenglin Li,Zeyu Sun,Yan Xu,Meng Zhang,Guipeng Yu,Cuijuan Wang
{"title":"Pendant Engineering of Covalent Organic Frameworks for Photocatalytic Hydroperoxide Production","authors":"Zhu Gao,Zhenglin Li,Zeyu Sun,Yan Xu,Meng Zhang,Guipeng Yu,Cuijuan Wang","doi":"10.1021/acsami.6c15070","DOIUrl":"https://doi.org/10.1021/acsami.6c15070","url":null,"abstract":"Covalent organic frameworks (COFs) have attracted much attention for their potential in photocatalytic hydrogen peroxide (H2O2) production. However, traditional COFs often suffer from sluggish charge transfer kinetics and a lack of highly electron-localized sites for O2 adsorption, leading to inefficient photocatalytic activity. Herein, we report a pore-channel electronic engineering strategy that introduces highly electron-localized cores into the pore channels of COFs by the regulation of heterocyclic pendants. The cores located in the channel of COFs acted as electron-rich active sites, enabling enhanced charge separation for photocatalytic H2O2 production. The polar furan groups were introduced onto the cores, further forming a powerful built-in electric field and hydrogen bond network within the channels, thereby accelerating the transport of electrons and protons. The furan-grafted COF (O-COF) showed a photocatalytic H2O2 production rate of 15,378 µmol h–1 g–1, with a yield 1.5–2.4 times higher than that of its counterparts. This work provides a valuable reference for the precise electronic regulation of pore channels in COFs to enhance photocatalytic performances.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"13 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149225994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gaopeng Wang,Yihan Ma,Haochen Ni,Dongyong Sha,Chang Zhang,Xuanzhou Chen,Louis D. Zhang,Jintao Yang
{"title":"Polymerization-Pathway-Dependent Zwitterionic Hydrogels for Time-Gated Information Encryption and Irreversible Optical Erasure","authors":"Gaopeng Wang,Yihan Ma,Haochen Ni,Dongyong Sha,Chang Zhang,Xuanzhou Chen,Louis D. Zhang,Jintao Yang","doi":"10.1021/acsami.6c15345","DOIUrl":"https://doi.org/10.1021/acsami.6c15345","url":null,"abstract":"Chameleon-like adaptive coloration inspires dynamic information camouflage, yet translating temporally programmable optical behavior into synthetic soft materials remains challenging. Here, we develop a zwitterionic pVS hydrogel for time-gated information encryption, decryption, and irreversible optical erasure. The system uses the established alkali-responsive fluorescence of VPES-derived units as the optical basis, while the SBMA-rich zwitterionic network suppresses swelling and preserves pattern fidelity. Spatially separated UV- and thermally initiated polymerization pathways generate domains with distinct initial emission states and alkaline-response trajectories within the hydrogel, allowing polymerization history to function as an intrinsic optical key. Quantitative kinetic analysis reveals progressive fluorescence convergence between the UV- and thermally initiated domains, with the red-emission contrast decreasing from 0.667 to 0.012 during prolonged alkaline treatment and preventing subsequent recovery of QR-code readability after acid treatment. This convergence establishes an operational time window for information security: short alkaline exposure produces a recoverable encrypted state, whereas excessive exposure permanently eliminates the optical contrast required for QR-code recognition, resulting in irreversible information self-destruction. This work provides a kinetically controlled hydrogel strategy for transient information protection and time-limited optical authentication.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"88 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Nitrate-Functionalized Azetidines for Synergistic Combustion in Ammonium Perchlorate-Based Propellant Formulations","authors":"Manojkumar Jujam, Ankita Tripathi, Srinivas Dharavath","doi":"10.1021/acsami.6c14117","DOIUrl":"10.1021/acsami.6c14117","url":null,"abstract":"<p>The development of high-performance energetic fuel components with rapid ignition characteristics is crucial for next-generation ammonium perchlorate (AP)-based composite propellants. Herein, we report a series of pyrimidine- and pyrazine-substituted azetidine nitrate esters (<strong>3</strong>, <strong>6</strong>, and <strong>9</strong>) and systematically investigate their structural, thermal, energetic, and combustion properties. Notably, compound <strong>3</strong> crystallized in two polymorphic forms (<strong>3</strong> and <strong>3′</strong>), revealing how crystal packing influences intermolecular interactions, density, and energetic performance despite identical molecular composition. All compounds exhibit favorable thermal stability, with decomposition temperatures ranging from 161 to 179 °C, high densities of 1.68–1.75 g cm<sup>–3</sup>, and moderate impact sensitivities (<2.5 J). Among them, compound <strong>9</strong> shows the highest energetic performance, with a detonation velocity of 7740 m s<sup>–1</sup>. To evaluate their potential as energetic fuel components, binary AP/fuel formulations with varying oxidizer-to-fuel ratios were prepared and assessed using combustion and hot-needle ignition tests. All formulations displayed rapid flame propagation and ignition delay times below 10 ms, while the formulation containing 5 wt % of AP with compound <strong>3</strong> achieved an exceptional short ignition delay of 1 ms. These findings demonstrate that nitrate-functionalized azetidines not only possess attractive intrinsic energetic properties but also exhibit remarkable fuel-oxidizer synergy with AP, enabling rapid ignition and efficient combustion. This work establishes pyrimidine and pyrazine-substituted azetidine nitrate esters as promising energetic fuel components for next-generation AP-based composite propellant formulations.</p>","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"18 41","pages":"56136–56147"},"PeriodicalIF":7.8,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149092211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}