ACS Applied Materials & Interfaces最新文献

{"title":"Complexity at a Humid Interface: Throwing Fresh Light on Atmospheric Corrosion","authors":"Michael Dowhyj, Kiran Kousar, Francis P. Lydiatt, Dimitri Chekulaev, Monika S. Walczak, Robert Temperton, James N.O’Shea, W. Stephen Walters, Andrew G. Thomas, Robert Lindsay","doi":"10.1021/acsami.4c21013","DOIUrl":"https://doi.org/10.1021/acsami.4c21013","url":null,"abstract":"Atmospheric corrosion of metals arising from exposure to water vapor is a pervasive problem across a wide range of practical scenarios, including nuclear material storage and historical artifact conservation. Frequently, it is hypothesized that this phenomenon becomes an issue once the number of monolayers of water growing atop a substrate is sufficient to facilitate corrosion chemistry, but supporting evidence remains scarce. We apply both near ambient pressure X-ray photoelectron spectroscopy and vibrational sum frequency spectroscopy to further elucidate the interaction of water vapor with zinc, a common engineering substrate for corrosion protection applications. Data acquired as a function of relative humidity indicate that water sorption is much more complex than expected, involving micropore filling and capillary condensation in the adventitious carbon layer covering the zinc surface. These results suggest that current mechanistic models for atmospheric corrosion, as well as other interfacial phenomena occurring in humid environments, require extensive revision and should embrace explicit consideration of the role of surface carbon contamination.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"26 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862639","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":"Design and Biodistribution of PEGylated Core–Shell X-ray Fluorescent Nanoparticle Contrast Agents","authors":"Giovanni M. Saladino, Bertha Brodin, Mihai Ciobanu, Nuzhet I. Kilic, Muhammet S. Toprak, Hans M. Hertz","doi":"10.1021/acsami.5c01902","DOIUrl":"https://doi.org/10.1021/acsami.5c01902","url":null,"abstract":"Nanoparticle (NP) uptake by macrophages and their accumulation in undesired organs such as the liver and spleen constitute a major barrier to the effective delivery of NPs to targeted tissues for bioimaging and therapeutics. Surface functionalization with polyethylene glycol (PEG) has been demonstrated to be a promising strategy to limit NP sequestration, although its longitudinal stability under physiological conditions and impact on the NP biodistribution have not been investigated with an <i>in vivo</i> quantitative approach. X-ray fluorescence (XRF) imaging has been employed to noninvasively map the <i>in vivo</i> biodistribution of purposely designed molybdenum-based contrast agents, leading to submillimeter resolution, elemental specificity, and high penetration depth. In the present work, we design a stepwise layering approach for NP synthesis to investigate the role of chemisorbed and physisorbed PEG on silica-coated molybdenum-based contrast agents in affecting their <i>in vivo</i> biodistribution, using whole-body XRF imaging. Comparative quantitative <i>in vivo</i> studies indicated that physisorbed PEG (1.5 kDa) did not substantially affect the biodistribution, while the chemisorption route with mPEG-Si (6–9 PEG units) led to significant macroscopic variations in the biodistribution, leading to a reduction in NP uptake by the liver. Furthermore, the results highlighted the major role of the spleen in compensating for the limited sequestration by the liver, microscopically validated with a multiscale imaging approach with fluorophore doping of the silica shell. These findings demonstrated the promising role of XRF imaging for the rapid assessment of surface-functionalized contrast agents with whole-body <i>in vivo</i> quantitative pharmacokinetic studies, establishing the groundwork for developing strategies to identify and bypass undesired NP uptake.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"18 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862399","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":"Ultrathin Bi2O2Se/Si Heterojunction Photodetector with Tunneling Oxide Passivation for Enhanced Optoelectronic Performance","authors":"Tzu-Pu Hung, Wei-Han Chen, Yi-Jyun Chen, Yu-Hao Tu, Zhi-Hao Huang, Yu-Lun Chueh, Chao-Hui Yeh, Chien-Wei Chen, Yang-Yu Jhang, Ying-Hao Chu, Cheng-Ying Chen","doi":"10.1021/acsami.5c03477","DOIUrl":"https://doi.org/10.1021/acsami.5c03477","url":null,"abstract":"Two-dimensional (2D) materials have garnered significant attention for next-generation optoelectronic devices due to their exceptional physical properties. This study introduces a high-performance ultrathin Bi₂O₂Se/Si heterojunction photodetector with tunneling oxide passivation, fabricated using a transfer-free pulsed laser deposition method. The Bi₂O₂Se layer exhibits strong air stability and compatibility for practical applications. By incorporating a thin SiO₂ tunneling layer, the heterostructure achieves a low dark current (∼22.3 nA/cm²), a high on/off ratio (∼8 × 10⁶), and a responsivity of 23.0 A/W. Compared to traditional CdS/Si devices, this photodetector demonstrates superior performance, including faster response time and higher stability. These findings underscore the potential of Bi₂O₂Se/Si heterostructures for advanced photonic and optoelectronic applications.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"39 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862400","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":"Gradient Lamellar SiC Nanowire Networks with Dense Coating for High-Performance Reusable Thermal Protection Materials","authors":"Junshuai Jia, De Lu, Shuhai Jia, Zhentao Ni, Lei Su, Min Niu, Kang Peng, Hongjie Wang","doi":"10.1021/acsami.5c02478","DOIUrl":"https://doi.org/10.1021/acsami.5c02478","url":null,"abstract":"As space exploration advances, reusable thermal protection materials are essential for spacecraft that must withstand extreme aerodynamic heating during reentry. SiC nanowire aerogels offer a combination of ultralow density, excellent thermal insulation, and inherent oxidation resistance, but their application is limited by insufficient thermal stability above 1200 °C in oxygen-rich environments. In this study, a layered SiC nanowire network was fabricated by hot-pressing to enhance nanowire cross-linking and reduce pore size. A dense SiC coating was subsequently introduced via chemical vapor infiltration (CVI), forming a gradient structure with nanowire diameters decreasing from surface to core. This design yields a low density of 640 mg·cm^–3, high compressive strength of 10.1 MPa, and exceptional ablation resistance. During 60 s of oxyacetylene torch ablation at 1800 °C, the material exhibited a negative mass ablation rate of −0.02 mg·s^–1 and a negative linear ablation rate of −1.05 μm·s^–1. These results demonstrate a promising structural strategy for enhancing the mechanical and thermal robustness of ceramic aerogels, advancing their application in extremely high-temperature environments.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"24 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862441","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":"Virucidal Efficacy of Laser-Generated Copper Nanoparticle Coatings against Model Coronavirus and Herpesvirus","authors":"Shahd Bakhet, Rasa Mardosaitė, Mohamed Ahmed Baba, Asta Tamulevičienė, Brigita Abakevičienė, Tomas Klinavičius, Kristupas Dagilis, Simas Račkauskas, Sigitas Tamulevičius, Raimundas Lelešius, Dainius Zienius, Algirdas Šalomskas, Krišja̅nis Šmits, Tomas Tamulevičius","doi":"10.1021/acsami.5c03330","DOIUrl":"https://doi.org/10.1021/acsami.5c03330","url":null,"abstract":"High-efficiency antiviral surfaces can be an effective means of fighting viral diseases, such as the recent COVID-19 pandemic. Copper and copper oxides, their nanoparticles (NPs) (CuNPs), and coatings are among the effective antiviral materials having internal and external biocidal effects on viruses. In this work, CuNP colloids were produced via femtosecond laser ablation of the metal target in water, a photophysical, cost-effective green synthesis alternative utilizing sodium citrate surfactant stabilizing the NPs. Raman spectroscopy and X-ray diffraction studies confirmed that the 32 nm mean size CuNPs are mixtures of mainly metallic copper and copper(I) oxide. Polyvinyl butyral was utilized as the binding agent for the CuNPs deposited via high-throughput spray-coating technology. The virucidal efficacy of such coatings containing Cu content ranging from 2.9 to 11.2 atom % was confirmed against animal-origin coronavirus containing ribonucleic acid, the agent of avian infectious bronchitis (IBV), and herpesvirus containing DNA, the agent of bovine herpesvirus (BoHV-1) infection. It was demonstrated that after a short time of exposure, the Cu NP-based coatings do not have a toxic effect on the cell cultures while demonstrating a negative effect on the biological activity of both model viruses that was confirmed by quantification of the viruses via the determination of tissue culture infectious dose (TCID₅₀) virus titer and their viral nucleic acids via determination of threshold cycle (Ct) employing real-time polymerase chain reaction analysis. The assays showed that the decrease in TCID₅₀ virus titer and increase in Ct values correlated with Cu content in Cu NP-based coatings for both investigated viruses. Contact with coatings decreased IBV and BoHV-1 numbers from 99.42% to 100.00% and from 98.65% to 99.96%, respectively. These findings suggest that CuNPs show inhibitory effects leading to the inactivation of viruses and their nuclei regardless of the presence of a viral envelope.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"127 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862448","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":"Stable Compressible Liquids Made of Hierarchical MOF Nanocrystals","authors":"Heting Xiao, Xi-feng Liang, Wei Zhou, Hebin Jiang, Daniel S. Parsons, Haixia Yin, Bitao Lu, Yueting Sun","doi":"10.1021/acsami.4c21181","DOIUrl":"https://doi.org/10.1021/acsami.4c21181","url":null,"abstract":"Compressible liquids can be produced by dispersing nanoparticles containing hydrophobic pores as colloidal suspensions in water. Due to the water intrusion into the hydrophobic nanopores under pressure, these compressible liquids exhibit significantly greater compressibility than traditional liquids, lending them to energy storage and absorption applications. Metal–organic frameworks (MOFs) such as ZIF-8 have been proposed for this application due to their large porosity, but their physical and chemical stability in aqueous environments presents challenges, prone to hydrolysis or separation from the liquid phase. In this work, the stability concerns of ZIF-8 used for compressible liquids have been circumvented by producing nanoparticles of mesoporous ZIF-8 by a template-directed synthesis. The stability, compressibility, and intrusion kinetics were compared between ZIF-8 with and without mesopores. The mesoporous ZIF-8, uniquely containing hydrophobic micropores and hydrophilic mesopores, presents compressibility comparable to that of conventional ZIF-8 due to the hydrophobic micropores but has the added benefit of significantly increased physical and chemical stability due to the hydrophilic mesopores. The presence of mesopores slightly reduces the water intrusion pressure and accelerates the kinetics that can benefit the cyclic compressibility for vibrations or repeated impact applications as water molecules reversibly intrude and extrude the micropores. This work can inspire future endeavors on understanding and developing compressible and porous liquids with sufficient stability for practical uses.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"46 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862402","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":"Attapulgite-Assisted In Situ Anchoring of Ultrasmall Ag Nanoparticles for Enhanced Eradication of Multidrug-Resistant Bacterial Biofilms and Accelerated Wound Healing","authors":"Yalong Li, Fangfang Yang, Bin Mu, Yulong Ma, Aiqin Wang, Xinyue Liu","doi":"10.1021/acsami.5c00906","DOIUrl":"https://doi.org/10.1021/acsami.5c00906","url":null,"abstract":"Silver nanoparticles (Ag NPs) have emerged as a promising solution to combat biofilm-related infections caused by multidrug-resistant bacteria. However, their practical application remains limited due to their tendency to aggregate and exhibit high toxicity at elevated concentrations. Here, we developed a <i>Citrus limon</i> peel water extract-mediated hydrothermal process to facilitate the heterogeneous nucleation of Ag NPs on attapulgite (APT) nanorods and prepared Ag/APT nanocomposites with ultrasmall Ag NPs (&lt;2 nm) uniformly anchored on APT nanorods. Ascorbic acid and polyphenols in <i>Citrus limon</i> peel extract acted as electron donors to reduce Ag⁺ to Ag⁰, while the interfacial interaction of APT nanorods induced heterogeneous nucleation and confined the growth of Ag nanocrystals, resulting in ultrasmall Ag NPs. As a result, due to the synergistic effect of the targeted biofilm-binding affinity of APT nanorods and the siginificantly increased specific surface area of Ag NPs conducive to the release of Ag⁺ ions, the obtained Ag/APT nanocomposites exhibited enhanced eradication activities on antimicrobial-resistant bacterial biofilms and accelerated wound healing in MRSA-infected wound models. Additionally, attributing to the low dosage of Ag, Ag/APT exhibited exceptional biocompatibility both in vitro and in vivo. This work provides a simple and green strategy for the preparation of highly active Ag-based antibacterial nanomaterials and sheds new light on the development of advanced antimicrobial agents for wound healing.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"253 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862443","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":"Molecular Anchoring Strategies for Enhanced Thermal Stability in Organic Field-Effect Transistors","authors":"Xiwei Zheng, Meili Xu, Yanan Zhu, Hao Yan, Hongyang Li, Xiaopeng Zhang, Xiteng Li, Yueyue Wang, Zhouying Wu, Lingqiang Meng, Shuai Chang, Yaowu He, Hong Meng","doi":"10.1021/acsami.5c02381","DOIUrl":"https://doi.org/10.1021/acsami.5c02381","url":null,"abstract":"Thermally stable organic transistors are crucial for ensuring reliable performance in diverse applications, including high-temperature environments and thermally demanding electronic systems. However, developing thermally stable organic semiconductors with excellent charge transport capability remains a great challenge. Here, a thermally stable and high-performance organic semiconductor, [1]benzothieno[3,2-<i>b</i>][1]benzothiophene (BTBT) derivative BTBT-PO8OP, is designed by incorporating a phenyl-anchored unit in the side chain. The highly ordered molecular arrangements in the BTBT-PO8OP films promotes strong intermolecular π–π interactions and efficient charge transport, enabling BTBT-PO8OP-based organic transistors to achieve a high mobility of 2.68 cm² V^–1 s^–1 and remarkable performance uniformity. Under thermal stress, the anchor-shaped side chain restricts molecular curling and contraction, maintaining the structural integrity of the molecules. Even at 145 °C, the phenyl anchor structure in BTBT-PO8OP-based organic transistors effectively mitigates side-chain curling, preserving molecular order and effective charge transport property, leading to superior thermal stability compared to mainstream small molecular material C8-BTBT. This work presents a promising material for thermally stable and high-performance organic transistors and demonstrates the potential of anchor-structure strategies in addressing the challenges of developing thermally stable organic semiconductors toward transistor-based applications.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"33 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143858267","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":"Probing the Effects of Dimethyl Aluminum Isopropoxide Surface Reaction Byproducts on Atomic Layer Deposition Nucleation","authors":"Jessica C. Jones, Jiayi Xu, Chang Yan, Chunxin Luo, Ashley R. Bielinski, Mark Muir, Adam S. Hock, Cong Liu, Alex B. F. Martinson","doi":"10.1021/acsami.5c00901","DOIUrl":"https://doi.org/10.1021/acsami.5c00901","url":null,"abstract":"Atomic layer deposition (ALD) processes that leverage a myriad of metal–organic and complementary reactant combinations have been identified to realize precise and conformal thin film growth. However, the effects of the ALD reaction byproducts on nucleation and growth mechanisms are rarely considered. Site-selective ALD processes provide an opportunity for the detailed investigation of uniform surface sites with atomistic accuracy. Intentional pretreatment with a known ALD reaction byproduct – isopropanol – enables a significant improvement in the nucleation rate reproducibility of dimethylaluminum isopropoxide and water ALD on rutile TiO₂(110). In situ spectroscopic ellipsometry reveals a partially reversible byproduct binding that is site-selective for TiO₂(110) surface oxygen vacancies. First-principles calculations reveal surface site-specific thermodynamics for adsorption of isopropanol and water that may influence ALD nucleation. The sensitivity of site-selective ALD motivates consideration of secondary surface reactions when designing precision deposition processes, including area- or site-selective ALD reactions.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"67 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862446","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":"Unexpected MoO3/Al Interfacial Reaction Lowering the Performance of Organic Solar Cells upon Thermal Annealing and Methods for Suppression","authors":"Xuelai Yu, Qian Xi, Jian Qin, Na Wu, Bowen Liu, Tianyu Liu, Zhiyun Li, Ronald Österbacka, Qun Luo, Chang-Qi Ma","doi":"10.1021/acsami.5c05122","DOIUrl":"https://doi.org/10.1021/acsami.5c05122","url":null,"abstract":"Understanding the degradation mechanism and improving the thermal stability of organic solar cells are essential for this new photovoltaic technology. In this work, we found that the high-performance polymer solar cells suffer from significant performance decay upon thermal annealing at 150 °C owing to the fast decay of <i>V</i>_OC and FF. We demonstrated that the thermal annealing process leads to a severe chemical reaction of MoO₃ with Al, forming an Al₂O₃ barrier layer at the MoO₃/Al interface, which lowers the built-in potential (<i>V</i>_bi) of the cells and consequently reduces charge collection efficiency. Inserting a thin C₆₀ interlayer between MoO₃/Al slows the chemical reaction of MoO₃ with Al, which ensures a high <i>V</i>_bi and charge collection efficiency for the annealed MoO₃/C₆₀/Al cells. Such a protection effect of the C₆₀ layer in improving device performance against thermal annealing was also confirmed for cells with different polymer photoactive layers and metal electrodes, demonstrating the generality of the interfacial degradation of the cells and the protection effect of the C₆₀ layer. Finally, we demonstrated that the inverted polymer solar cells with the C₆₀-modified anode showed almost no performance decay upon high-temperature hot-press encapsulation, demonstrating excellent heat tolerance of this new device structure.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"18 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143858278","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}