Meihao Chen, Chenchen Ding, Yixiong Feng, Weiyu Yan, Junjie Song, Zhifeng Zhang, Xi Xiao, Jianrong Tan, Xiuju Song
Soft actuators have emerged as promising tools for environmental monitoring; however, most existing actuators suffer from multistimuli cross-sensitivity and limited adaptability across various environments. Herein, we propose a bilayer soft actuator composed of a graphene-doped polydimethylsiloxane (G@PDMS) layer and a poly(vinylidene fluoride) (PVDF) layer, capable of effective deformation in both air and aqueous environments while exhibiting selective responsiveness. The actuator demonstrates multistimuli responsiveness to organic solvents/vapors, thermal radiation, and infrared (IR) radiation in air, achieving bidirectional deformation under organic stimuli with a remarkable bending angle of 630° and a load capacity of 180 times its self-weight. In aqueous environments, the actuator exhibits minimal response to thermal and IR light stimuli but shows high selectivity and rapid response to specific organic pollutants, with a response time of just 1.77 s to dichloromethane. Leveraging these properties, we developed a series of functional actuators─including Miura origami, airfoil, and artificial muscle configurations─demonstrating their capability to replicate complex movements. Moreover, a water lily-inspired multienvironmental actuator was designed to effectively shield against underwater temperature fluctuations, IR light, and nontarget organic solvent interference, showing its cross-insensitivity and potential for real-time environmental monitoring applications.
{"title":"Bidirectional Bending Soft Actuator with Multistimuli Responsiveness for Environmental Pollutant Monitoring","authors":"Meihao Chen, Chenchen Ding, Yixiong Feng, Weiyu Yan, Junjie Song, Zhifeng Zhang, Xi Xiao, Jianrong Tan, Xiuju Song","doi":"10.1021/acsami.5c02577","DOIUrl":"https://doi.org/10.1021/acsami.5c02577","url":null,"abstract":"Soft actuators have emerged as promising tools for environmental monitoring; however, most existing actuators suffer from multistimuli cross-sensitivity and limited adaptability across various environments. Herein, we propose a bilayer soft actuator composed of a graphene-doped polydimethylsiloxane (G@PDMS) layer and a poly(vinylidene fluoride) (PVDF) layer, capable of effective deformation in both air and aqueous environments while exhibiting selective responsiveness. The actuator demonstrates multistimuli responsiveness to organic solvents/vapors, thermal radiation, and infrared (IR) radiation in air, achieving bidirectional deformation under organic stimuli with a remarkable bending angle of 630° and a load capacity of 180 times its self-weight. In aqueous environments, the actuator exhibits minimal response to thermal and IR light stimuli but shows high selectivity and rapid response to specific organic pollutants, with a response time of just 1.77 s to dichloromethane. Leveraging these properties, we developed a series of functional actuators─including <i>Miura</i> origami, airfoil, and artificial muscle configurations─demonstrating their capability to replicate complex movements. Moreover, a water lily-inspired multienvironmental actuator was designed to effectively shield against underwater temperature fluctuations, IR light, and nontarget organic solvent interference, showing its cross-insensitivity and potential for real-time environmental monitoring applications.","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":"143858272","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}
Yao Lu, Zheng Li, Hao Cheng, Mengran Wang, Zhongliang Tian
The prosperity of aqueous rechargeable Zn–air batteries is hindered by the discontent performance of the oxygen electrocatalyst in the cathode. An important catalyst for oxygen electrocatalyst is an atomically dispersed iron atom embedded in the nitrogen-doped carbon (Fe-NC) material. However, the unsuitable binding energy between the center Fe atom and the reaction intermediate leads to the sluggish oxygen electrocatalyst reaction rate. The regulation of the electron structure of the Fe atom by adjusting the coordinate structure is one effective solution. Here, we prose the substitution of nitrogen atom by sulfur atom, who has weak electronegativity and can donor electron to Fe atom, so the d-band center of Fe atom is elevated. Thus, the Fe-NS active site facilitates the fast *OOH adsorption and the *OH desorption, compared with counterpart Fe-N active site. As a result, the oxygen electrocatalyst reaction kinetics is accelerated. The Fe-NSC catalyst has good compatibility and performance in aqueous rechargeable Zn–air batteries, affording stable charge/discharge process for 1000 h/3000 cycles with a high voltage tolerance (0.74–0.96 V voltage gap) under 10 mA cm–2. This work brings referential sights to the modification of electron structure of the center atom in the M–N–C-type catalyst.
{"title":"d-Band Center Regulation Facilitated by Asymmetrical Ligand in the Atomically Dispersed Iron Site toward Promoting Oxygen Electrocatalysis Activities","authors":"Yao Lu, Zheng Li, Hao Cheng, Mengran Wang, Zhongliang Tian","doi":"10.1021/acsami.5c01285","DOIUrl":"https://doi.org/10.1021/acsami.5c01285","url":null,"abstract":"The prosperity of aqueous rechargeable Zn–air batteries is hindered by the discontent performance of the oxygen electrocatalyst in the cathode. An important catalyst for oxygen electrocatalyst is an atomically dispersed iron atom embedded in the nitrogen-doped carbon (Fe-NC) material. However, the unsuitable binding energy between the center Fe atom and the reaction intermediate leads to the sluggish oxygen electrocatalyst reaction rate. The regulation of the electron structure of the Fe atom by adjusting the coordinate structure is one effective solution. Here, we prose the substitution of nitrogen atom by sulfur atom, who has weak electronegativity and can donor electron to Fe atom, so the d-band center of Fe atom is elevated. Thus, the Fe-NS active site facilitates the fast *OOH adsorption and the *OH desorption, compared with counterpart Fe-N active site. As a result, the oxygen electrocatalyst reaction kinetics is accelerated. The Fe-NSC catalyst has good compatibility and performance in aqueous rechargeable Zn–air batteries, affording stable charge/discharge process for 1000 h/3000 cycles with a high voltage tolerance (0.74–0.96 V voltage gap) under 10 mA cm<sup>–2</sup>. This work brings referential sights to the modification of electron structure of the center atom in the M–N–C-type catalyst.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"62 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143858261","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}
In the fields of controllable catalysis, electromagnetic field manipulation, and nanoscience, mediated self-assembly has become a key method for controlling the orientation of nonspherical nanoparticles. The ordered structures formed by block copolymer self-assembly can provide an orientation matrix for nonspherical nanoparticles. Based on self-consistent field theory, this study investigates the orientation effects of monaxially symmetric cylindrical nanoparticles in the lamellar phases formed by block copolymers. Using cylindrical and pore-containing ring nanoparticles as models for nonspherical particles, we successfully describe the particles’ anisotropy and nonconvex surface properties. Numerical results show that the orientation effect of the lamellar ordered structure exhibits a nontrivial dependence on the geometric and topological properties of nonspherical particles. In addition to interfacial tension effects, the orientation mechanism of small-sized nanoparticles mainly arises from the stretching effect of the polymer, manifested in two main effects: (1) the particle deforms the polymer chain, reducing its conformational entropy, thus tending to align in a specific orientation; (2) the orientation field at the polymer chain ends is discontinuous, and the nanoparticles can embed and adopt a specific orientation. For nonconvex nanoparticles, the geometric size of the pore structure adjusts the polymer’s free volume, influencing the orientation effect. This study not only deepens the understanding of the orientation mechanism in block copolymer-mediated nanoparticle self-assembly, but also provides potential theoretical insights for the design and application of energy catalysis, biomedical materials, and functional nanostructures.
{"title":"Orientation of Nonspherical Nanoparticles in Ordered Block Copolymer for Functional Materials","authors":"Zhixin Liu, Qiuju Chen, Yangjun Yan, Jing Zhang, Rongxin Yue, Shengda Zhao, Jiaxin Yu, Xinjie Li, Quanxiao Dong, Xinghua Zhang","doi":"10.1021/acsami.5c04025","DOIUrl":"https://doi.org/10.1021/acsami.5c04025","url":null,"abstract":"In the fields of controllable catalysis, electromagnetic field manipulation, and nanoscience, mediated self-assembly has become a key method for controlling the orientation of nonspherical nanoparticles. The ordered structures formed by block copolymer self-assembly can provide an orientation matrix for nonspherical nanoparticles. Based on self-consistent field theory, this study investigates the orientation effects of monaxially symmetric cylindrical nanoparticles in the lamellar phases formed by block copolymers. Using cylindrical and pore-containing ring nanoparticles as models for nonspherical particles, we successfully describe the particles’ anisotropy and nonconvex surface properties. Numerical results show that the orientation effect of the lamellar ordered structure exhibits a nontrivial dependence on the geometric and topological properties of nonspherical particles. In addition to interfacial tension effects, the orientation mechanism of small-sized nanoparticles mainly arises from the stretching effect of the polymer, manifested in two main effects: (1) the particle deforms the polymer chain, reducing its conformational entropy, thus tending to align in a specific orientation; (2) the orientation field at the polymer chain ends is discontinuous, and the nanoparticles can embed and adopt a specific orientation. For nonconvex nanoparticles, the geometric size of the pore structure adjusts the polymer’s free volume, influencing the orientation effect. This study not only deepens the understanding of the orientation mechanism in block copolymer-mediated nanoparticle self-assembly, but also provides potential theoretical insights for the design and application of energy catalysis, biomedical materials, and functional nanostructures.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"24 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862451","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}
Yibo Pan, Xing Zhou, Deda Peng, Run Liu, Yongyuan Zhou, Jin Han, Tiefeng Liu, Ya You
Layered oxides are one of the most promising cathode materials for sodium-ion batteries due to their high theoretical capacity, high voltage platform, and low manufacturing cost. However, the poor air stability severely limits the practical application of the O3-type layered oxide. In this study, a simple one-step sintering coating method is explored to construct a uniform and dense heavy metal oxide (Sb2O3) coating layer on Na(Ni1/3Fe1/3Mn1/3)O2 (NFM333), and the coating layer effectively improved the air stability of NFM333 by mitigating the contact of H2O and CO2 in the air. Consequently, NFM333–0.5 wt % Sb2O3 obtains a specific capacity of 92.1 mAh g–1 with a capacity retention of 84.6% after 200 cycles at 1C after exposure in air with 60% humidity for 2 days, while NFM333 without a coating layer has a specific capacity of just 85.4 mAh g–1 with a capacity retention of 65.3% after 200 cycles at 1C after the same exposure handling. This study presents a facile coating method to improve the air stability of O3-type NFM33, which provides insights for the development of air-stable NFM333.
{"title":"One-Step Sintering Coating toward Air-Stable O3-Type Layered Oxide Cathodes for Sodium-Ion Batteries","authors":"Yibo Pan, Xing Zhou, Deda Peng, Run Liu, Yongyuan Zhou, Jin Han, Tiefeng Liu, Ya You","doi":"10.1021/acsami.5c01356","DOIUrl":"https://doi.org/10.1021/acsami.5c01356","url":null,"abstract":"Layered oxides are one of the most promising cathode materials for sodium-ion batteries due to their high theoretical capacity, high voltage platform, and low manufacturing cost. However, the poor air stability severely limits the practical application of the O3-type layered oxide. In this study, a simple one-step sintering coating method is explored to construct a uniform and dense heavy metal oxide (Sb<sub>2</sub>O<sub>3</sub>) coating layer on Na(Ni<sub>1/3</sub>Fe<sub>1/3</sub>Mn<sub>1/3</sub>)O<sub>2</sub> (NFM333), and the coating layer effectively improved the air stability of NFM333 by mitigating the contact of H<sub>2</sub>O and CO<sub>2</sub> in the air. Consequently, NFM333–0.5 wt % Sb<sub>2</sub>O<sub>3</sub> obtains a specific capacity of 92.1 mAh g<sup>–1</sup> with a capacity retention of 84.6% after 200 cycles at 1C after exposure in air with 60% humidity for 2 days, while NFM333 without a coating layer has a specific capacity of just 85.4 mAh g<sup>–1</sup> with a capacity retention of 65.3% after 200 cycles at 1C after the same exposure handling. This study presents a facile coating method to improve the air stability of O3-type NFM33, which provides insights for the development of air-stable NFM333.","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":"143862560","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}
Xi Chen, Shifang Duan, Dezhou Cao, Jinyao Tang, Xing Ma, Ting Kuang, Shuailong Zhang, Wei Wang
Transporting and assembling colloidal particles is key to applications such as drug delivery, the fabrication of functional materials, and microrobotics. As a result, there is intense effort in developing techniques for manipulating colloids at high spatial and temporal resolutions, and in a dynamic, reconfigurable manner. Although optical manipulation provides precise particle control, its application is often limited by high energy requirements and intricate setups. In this study, we present an opto-chemical-electronic tweezer (OCET), a novel particle manipulation strategy that addresses these limitations. The OCET system utilizes a photocatalytic TiO2/Pt film irradiated with perpendicular UV light. An electric field is then generated parallel to the film at the boundary of the patterned UV light, directed from the illuminated region to the dark region. The consequent electrophoresis and electroosmosis work in tandem to move inert colloidal particles (e.g., SiO2 microspheres) at ∼1 μm/s and trap them a few μm inside the illuminated region along the boundary of the light pattern. By dynamically modulating light patterns, the OCET system achieves directional particle transport and reconfigurable colloidal assembly into arbitrary patterns. The OCET system holds promise for applications in optofluidics, micro/nanorobotics, and biomedical systems, setting the stage for further advancements in optical manipulation technologies.
{"title":"Reconfigurable Transport and Assembly of Colloidal Particles via Opto-Chemical-Electronic Tweezer (OCET)","authors":"Xi Chen, Shifang Duan, Dezhou Cao, Jinyao Tang, Xing Ma, Ting Kuang, Shuailong Zhang, Wei Wang","doi":"10.1021/acsami.5c02233","DOIUrl":"https://doi.org/10.1021/acsami.5c02233","url":null,"abstract":"Transporting and assembling colloidal particles is key to applications such as drug delivery, the fabrication of functional materials, and microrobotics. As a result, there is intense effort in developing techniques for manipulating colloids at high spatial and temporal resolutions, and in a dynamic, reconfigurable manner. Although optical manipulation provides precise particle control, its application is often limited by high energy requirements and intricate setups. In this study, we present an opto-chemical-electronic tweezer (OCET), a novel particle manipulation strategy that addresses these limitations. The OCET system utilizes a photocatalytic TiO<sub>2</sub>/Pt film irradiated with perpendicular UV light. An electric field is then generated parallel to the film at the boundary of the patterned UV light, directed from the illuminated region to the dark region. The consequent electrophoresis and electroosmosis work in tandem to move inert colloidal particles (e.g., SiO<sub>2</sub> microspheres) at ∼1 μm/s and trap them a few μm inside the illuminated region along the boundary of the light pattern. By dynamically modulating light patterns, the OCET system achieves directional particle transport and reconfigurable colloidal assembly into arbitrary patterns. The OCET system holds promise for applications in optofluidics, micro/nanorobotics, and biomedical systems, setting the stage for further advancements in optical manipulation technologies.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"63 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862444","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}
Long Wang, Tao Li, Junying Wu, Gang Song, Guiting Chen, Zhicai He, Yong Cao
Regulating aggregation and molecular packing of small-molecule cathode interlayer (CIL) materials is a significant but imperceptible issue in the development of high-performance organic solar cells (OSCs). For the celebrity PDINN small molecule, the strong aggregation tendency of the perylene diimide molecular backbone leads to excessive crystallinity when films form, ultimately affecting the morphology and charge transport ability of the films. Herein, we address this issue by developing a hydroxyl-induced anti-aggregation strategy by introducing a suitable amount of hydroxypropyl cellulose (HPC) into the solution of PDINN, and a careful balance is achieved between the film-forming quality and the aggregation of the material. Taking two commercially available active layer systems, PM6/Y6 and D18/L8-BO, as examples, the introduction of HPC significantly increases the JSC and FF values of the devices. Therefore, power conversion efficiency risen from 17.38% to 18.25% for the PM6/Y6 system and from 18.45% to 19.73% for the D18/L8-BO system, and it was proved that the thickness tolerance of the HPC hybrid interface was improved significantly. This hydroxyl-induced anti-aggregation strategy has demonstrated efficiency in other active layer systems. This work provides a simple and effective method to solve the aggregation problem of small molecule CIL materials, which is conducive to the commercial development of OSCs.
{"title":"Aggregation Optimization of Cathode Interlayer via Incorporating Cellulose Enables High-Performance Organic Solar Cells","authors":"Long Wang, Tao Li, Junying Wu, Gang Song, Guiting Chen, Zhicai He, Yong Cao","doi":"10.1021/acsami.5c02839","DOIUrl":"https://doi.org/10.1021/acsami.5c02839","url":null,"abstract":"Regulating aggregation and molecular packing of small-molecule cathode interlayer (CIL) materials is a significant but imperceptible issue in the development of high-performance organic solar cells (OSCs). For the celebrity PDINN small molecule, the strong aggregation tendency of the perylene diimide molecular backbone leads to excessive crystallinity when films form, ultimately affecting the morphology and charge transport ability of the films. Herein, we address this issue by developing a hydroxyl-induced anti-aggregation strategy by introducing a suitable amount of hydroxypropyl cellulose (HPC) into the solution of PDINN, and a careful balance is achieved between the film-forming quality and the aggregation of the material. Taking two commercially available active layer systems, PM6/Y6 and D18/L8-BO, as examples, the introduction of HPC significantly increases the <i>J</i><sub>SC</sub> and FF values of the devices. Therefore, power conversion efficiency risen from 17.38% to 18.25% for the PM6/Y6 system and from 18.45% to 19.73% for the D18/L8-BO system, and it was proved that the thickness tolerance of the HPC hybrid interface was improved significantly. This hydroxyl-induced anti-aggregation strategy has demonstrated efficiency in other active layer systems. This work provides a simple and effective method to solve the aggregation problem of small molecule CIL materials, which is conducive to the commercial development of OSCs.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"108 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862561","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}
Creation of a biological seal and efficient antibacterial qualities in the peri-implant environment is essential for the success of dental implants. Therefore, novel multifunctional strategies are being developed to address these issues, aiming at the simultaneous improvement of tissue integration and hindering pathological biofilm formation. In this study, we investigated the effect of tissue-promotive strontium acetate (SrAc), antibacterial silver nitrate (AgNO3), and their combination on oral soft tissue cells and an oral multispecies biofilm not only in monoculture setups but also in a three-dimensional (3D) implant-tissue-oral bacterial-biofilm model (INTERbACT model) that takes the naturally occurring interactions into account. Application of SrAc led to improved fibroblast migration in the monoculture setting, without impairment of metabolic activity, even upon additional AgNO3 administration. Notably, the combined treatment of SrAc and AgNO3 resulted in a synergistic antibacterial effect during biofilm formation as well as on early matured biofilms. Most interestingly, the antibacterial effect of the combined treatment was even further enhanced within the coculture setup leading to increased bacterial death and decreased biofilm volume. The 3D tissue in the coculture setup underwent the combined treatment with a notable rise in CCL20 and IL-1β levels. Histologically, only the AgNO3-treated groups exhibited damage to the integrity of the epithelial barrier. Therefore, the results of this study demonstrated promising dual antibacterial and tissue-integrative characteristics of combined AgNO3 and SrAc in the dental implant environment. Additionally, the study emphasizes the importance of considering naturally occurring tissue–bacteria interactions for reliable in vitro testing of novel implant materials.
{"title":"Dual Antibacterial and Soft-Tissue-Integrative Effect of Combined Strontium Acetate and Silver Nitrate on Peri-Implant Environment: Insights from Multispecies Biofilms and a 3D Coculture Model","authors":"Marjan Kheirmand-Parizi, Katharina Doll-Nikutta, Carina Mikolai, Dagmar Wirth, Henning Menzel, Meike Stiesch","doi":"10.1021/acsami.5c01093","DOIUrl":"https://doi.org/10.1021/acsami.5c01093","url":null,"abstract":"Creation of a biological seal and efficient antibacterial qualities in the peri-implant environment is essential for the success of dental implants. Therefore, novel multifunctional strategies are being developed to address these issues, aiming at the simultaneous improvement of tissue integration and hindering pathological biofilm formation. In this study, we investigated the effect of tissue-promotive strontium acetate (SrAc), antibacterial silver nitrate (AgNO<sub>3</sub>), and their combination on oral soft tissue cells and an oral multispecies biofilm not only in monoculture setups but also in a three-dimensional (3D) implant-tissue-oral bacterial-biofilm model (INTERbACT model) that takes the naturally occurring interactions into account. Application of SrAc led to improved fibroblast migration in the monoculture setting, without impairment of metabolic activity, even upon additional AgNO<sub>3</sub> administration. Notably, the combined treatment of SrAc and AgNO<sub>3</sub> resulted in a synergistic antibacterial effect during biofilm formation as well as on early matured biofilms. Most interestingly, the antibacterial effect of the combined treatment was even further enhanced within the coculture setup leading to increased bacterial death and decreased biofilm volume. The 3D tissue in the coculture setup underwent the combined treatment with a notable rise in CCL20 and IL-1β levels. Histologically, only the AgNO<sub>3</sub>-treated groups exhibited damage to the integrity of the epithelial barrier. Therefore, the results of this study demonstrated promising dual antibacterial and tissue-integrative characteristics of combined AgNO<sub>3</sub> and SrAc in the dental implant environment. Additionally, the study emphasizes the importance of considering naturally occurring tissue–bacteria interactions for reliable <i>in vitro</i> testing of novel implant materials.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"20 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862445","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}
Pengfei Zhao, Guixin Wang, Jianhui Zheng, Jun Ouyang, Jiale Zheng, Yujing Liu, Xinyong Tao, Tiefeng Liu
Aqueous zinc-ion batteries (AZIBs) are promising candidates for next-generation energy storage systems. However, the practical implementation is hindered by challenges associated with zinc (Zn) dendrite growth and parasitic side reactions. Here, we designed a self-assembled monolayer (SAM) using theanine (CA) to modify the Zn anode. As expected, CA can strongly interact with the Zn substrate through the carboxyl groups, forming a compact and uniform SAM. The amino and amide functional groups of CA exhibit high Zn affinity, effectively regulating Zn2+ flux and achieving uniform Zn deposition. The ultrathin interface provided by the CA monolayer acts as a barrier to water molecules, thereby suppressing hydrogen evolution reactions (HER) and minimizing the formation of undesirable byproducts. As a result, Zn anodes protected by a CA monolayer demonstrate exceptional durability, operating for over 2000 h at a current density of 5 mA cm–2 and an areal capacity of 2 mAh cm–2. Additionally, full cells paired with NH4V4O10 cathodes also demonstrate superior reaction reversibility and high capacity retention. The CA-based SAM holds promise for overcoming critical challenges faced in Zn anode and advancing the development of stable and efficient AZIBs.
{"title":"Self-Assembled Monolayer Enables a Nucleophilic Interfacial Layer for Highly Reversible Zinc Metal Anode","authors":"Pengfei Zhao, Guixin Wang, Jianhui Zheng, Jun Ouyang, Jiale Zheng, Yujing Liu, Xinyong Tao, Tiefeng Liu","doi":"10.1021/acsami.5c03770","DOIUrl":"https://doi.org/10.1021/acsami.5c03770","url":null,"abstract":"Aqueous zinc-ion batteries (AZIBs) are promising candidates for next-generation energy storage systems. However, the practical implementation is hindered by challenges associated with zinc (Zn) dendrite growth and parasitic side reactions. Here, we designed a self-assembled monolayer (SAM) using theanine (CA) to modify the Zn anode. As expected, CA can strongly interact with the Zn substrate through the carboxyl groups, forming a compact and uniform SAM. The amino and amide functional groups of CA exhibit high Zn affinity, effectively regulating Zn<sup>2+</sup> flux and achieving uniform Zn deposition. The ultrathin interface provided by the CA monolayer acts as a barrier to water molecules, thereby suppressing hydrogen evolution reactions (HER) and minimizing the formation of undesirable byproducts. As a result, Zn anodes protected by a CA monolayer demonstrate exceptional durability, operating for over 2000 h at a current density of 5 mA cm<sup>–2</sup> and an areal capacity of 2 mAh cm<sup>–2</sup>. Additionally, full cells paired with NH<sub>4</sub>V<sub>4</sub>O<sub>10</sub> cathodes also demonstrate superior reaction reversibility and high capacity retention. The CA-based SAM holds promise for overcoming critical challenges faced in Zn anode and advancing the development of stable and efficient AZIBs.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"39 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862450","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}
Huiru Zhu, Xiaoying Ni, Jiaxin Su, Yong Qin, Xiaoya He, Bo Liu, Shuang Ding, Haoru Wang, Xiangmin Zhang, Jie Huang, Qian Hu, Ruofei Ma, Jinhua Cai
To overcome the limited efficacy of chemodynamic therapy (CDT) caused by insufficient hydrogen peroxide (H2O2) in the tumor microenvironment, we engineered a glutathione (GSH)-responsive multifunctional nanosystem, HCTG-C, based on hollow mesoporous organosilica nanoparticles. This system integrates tirapazamine (TPZ), glucose oxidase (GOx), in situ-synthesized copper sulfide (CuS), and CT2A glioma cell membrane coating to enable dual tumor-targeted therapy and self-imaging capabilities. The therapeutic mechanism relies on three synergistic cascades: (1) GOx-mediated glucose oxidation to deplete oxygen and generate H2O2, establishing a self-sustaining H2O2 supply; (2) GSH-triggered CuS conversion to Cu(I), amplifying Fenton-like reactions for efficient H2O2-to-reactive oxygen species conversion and ferroptosis induction; and (3) hypoxia-activated TPZ to exert cytotoxic effects, synergizing chemotherapy with CDT. Experimental results demonstrated that HCTG-C achieves real-time MRI monitoring via GSH depletion-driven Cu valence transitions, while its self-replenishing H2O2 and oxygen-activation mechanisms significantly enhance antitumor efficacy against CT2A glioma in vitro and in vivo. By innovatively combining H2O2 self-supply cascades, hypoxia-activated chemotherapy, and ferroptosis-driven CDT, this work presents a paradigm-shifting strategy for self-imaging-guided combinatorial therapy, advancing ferroptosis-based approaches for precision glioma treatment.
{"title":"Multifunctional Mesoporous Silicon Nanoparticles for MRI-Based Diagnostic Imaging and Glioma Therapy","authors":"Huiru Zhu, Xiaoying Ni, Jiaxin Su, Yong Qin, Xiaoya He, Bo Liu, Shuang Ding, Haoru Wang, Xiangmin Zhang, Jie Huang, Qian Hu, Ruofei Ma, Jinhua Cai","doi":"10.1021/acsami.5c02882","DOIUrl":"https://doi.org/10.1021/acsami.5c02882","url":null,"abstract":"To overcome the limited efficacy of chemodynamic therapy (CDT) caused by insufficient hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) in the tumor microenvironment, we engineered a glutathione (GSH)-responsive multifunctional nanosystem, HCTG-C, based on hollow mesoporous organosilica nanoparticles. This system integrates tirapazamine (TPZ), glucose oxidase (GOx), in situ-synthesized copper sulfide (CuS), and CT2A glioma cell membrane coating to enable dual tumor-targeted therapy and self-imaging capabilities. The therapeutic mechanism relies on three synergistic cascades: (1) GOx-mediated glucose oxidation to deplete oxygen and generate H<sub>2</sub>O<sub>2</sub>, establishing a self-sustaining H<sub>2</sub>O<sub>2</sub> supply; (2) GSH-triggered CuS conversion to Cu(I), amplifying Fenton-like reactions for efficient H<sub>2</sub>O<sub>2</sub>-to-reactive oxygen species conversion and ferroptosis induction; and (3) hypoxia-activated TPZ to exert cytotoxic effects, synergizing chemotherapy with CDT. Experimental results demonstrated that HCTG-C achieves real-time MRI monitoring via GSH depletion-driven Cu valence transitions, while its self-replenishing H<sub>2</sub>O<sub>2</sub> and oxygen-activation mechanisms significantly enhance antitumor efficacy against CT2A glioma in vitro and in vivo. By innovatively combining H<sub>2</sub>O<sub>2</sub> self-supply cascades, hypoxia-activated chemotherapy, and ferroptosis-driven CDT, this work presents a paradigm-shifting strategy for self-imaging-guided combinatorial therapy, advancing ferroptosis-based approaches for precision glioma treatment.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"124 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143858262","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}
Minghan Wu, Siqi Hao, Linfeng Qi, Yu Shi, Wei Yang, Jingjing Bao, Min Du, Zhengyu Mo, Licheng Sun
Thermogalvanic cells (TGCs) are at the forefront of effective thermoelectric conversion methods, but the practical utilization of their integrated devices is hindered by the suboptimal performance of N-type TGCs. Herein, a novel redox couple of Cu/Cu(en)22+ is proposed to construct a liquid-state N-type TGC. The electrochemical reaction involving the Cu electrode, ethylenediamine (en), and their chelated compound Cu(en)22+ exhibits a significant reaction entropy change, resulting in an enhanced temperature coefficient (α). We reveal that the α of the Cu/Cu(en)22+-based TGC reaches 1.64 mV K–1. Furthermore, by optimizing the concentrations of Cu2+, ethylenediamine, and (NH4)2SO4 in the electrolyte, both α and normalized power density can be significantly improved, achieving values of 2.12 mV K–1 and 676 μW m–2 K–2, respectively. Moreover, by constructing a P–N junction with P-type and N-type TGC, we achieve a high potential of 121 mV under a temperature gradient of 35 K. This work expands the available redox couple options for N-type TGCs and offers a new pathway for efficient thermoelectric conversion.
{"title":"An N-Type Thermogalvanic Cell with a High Temperature Coefficient Based on the Cu/Cu(en)22+ Redox Couple","authors":"Minghan Wu, Siqi Hao, Linfeng Qi, Yu Shi, Wei Yang, Jingjing Bao, Min Du, Zhengyu Mo, Licheng Sun","doi":"10.1021/acsami.5c03375","DOIUrl":"https://doi.org/10.1021/acsami.5c03375","url":null,"abstract":"Thermogalvanic cells (TGCs) are at the forefront of effective thermoelectric conversion methods, but the practical utilization of their integrated devices is hindered by the suboptimal performance of N-type TGCs. Herein, a novel redox couple of Cu/Cu(en)<sub>2</sub><sup>2+</sup> is proposed to construct a liquid-state N-type TGC. The electrochemical reaction involving the Cu electrode, ethylenediamine (en), and their chelated compound Cu(en)<sub>2</sub><sup>2+</sup> exhibits a significant reaction entropy change, resulting in an enhanced temperature coefficient (α). We reveal that the α of the Cu/Cu(en)<sub>2</sub><sup>2+</sup>-based TGC reaches 1.64 mV K<sup>–1</sup>. Furthermore, by optimizing the concentrations of Cu<sup>2+</sup>, ethylenediamine, and (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub> in the electrolyte, both α and normalized power density can be significantly improved, achieving values of 2.12 mV K<sup>–1</sup> and 676 μW m<sup>–2</sup> K<sup>–2</sup>, respectively. Moreover, by constructing a P–N junction with P-type and N-type TGC, we achieve a high potential of 121 mV under a temperature gradient of 35 K. This work expands the available redox couple options for N-type TGCs and offers a new pathway for efficient thermoelectric conversion.","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":"143862449","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}
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