ACS Nano最新文献_第10页

Concentration-Dependent Control of the Band Gap Energy of a Low-Dimensional Lepidocrocite Titanate 低维钛酸蛭石带隙能量的浓度依赖性控制

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-01-16 DOI: 10.1021/acsnano.4c16410

Adam D. Walter, Gregory R. Schwenk, Yuanren Liu, David Bugallo Ferron, Jeffrey T. Wilk, Lucas M. Ferrer, Christopher Y. Li, Yong-Jie Hu, Michel W. Barsoum

{"title":"Concentration-Dependent Control of the Band Gap Energy of a Low-Dimensional Lepidocrocite Titanate","authors":"Adam D. Walter, Gregory R. Schwenk, Yuanren Liu, David Bugallo Ferron, Jeffrey T. Wilk, Lucas M. Ferrer, Christopher Y. Li, Yong-Jie Hu, Michel W. Barsoum","doi":"10.1021/acsnano.4c16410","DOIUrl":"https://doi.org/10.1021/acsnano.4c16410","url":null,"abstract":"Recently, we reported on the simple, scalable synthesis of quantum-confined one-dimensional (1D) lepidocrocite titanate nanofilaments (1DLs). Herein, we show, using solid-state UV–vis spectroscopy, that reducing the concentration of aqueous 1DL colloidal suspensions from 40 to 0.01 g/L increases the band gap energy and light absorption onset of dried filtered films from ≈3.5 to ≈4.5 eV. This range is ascribed to quantum confinement as the system transitions from two-dimensional (2D) into 1D with dilution. It is only after the colloidal suspensions are dried and the 1DLs start to self-assemble into ribbons and sheets that the band gap values change. This self-assembly is manifested in the X-ray diffraction patterns and the emergence of a Raman band characteristic of 2D lepidocrocite titanates. In colloidal form, 1DLs exhibit a lyotropic liquid crystal phase with a critical concentration of between 10 and 1 g/L. Additionally, the Beer–Lambert law applies with a mass absorbance coefficient of 2 ± 0.4 Lg–1 cm–1. The optical absorbance edges of the colloidal suspensions are not a function of concentration. The experimental findings are theoretically supported by density functional theory calculations of the Raman vibrational modes and electronic band structures of the 1D and 2D lepidocrocite titanate atomic structures.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"8 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142986141","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}

引用次数: 0

Enhancing Droplet Spreading on a Hydrophobic Plant Surface by Surfactant/Cellulose Nanocrystal Complexes 表面活性剂/纤维素纳米晶配合物增强液滴在疏水植物表面的扩散

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-01-16 DOI: 10.1021/acsnano.4c13542

Gaili Cao, Weinan Zhao, Lian Han, Youchao Teng, Shikuan Xu, Han Nguyen, Kam Chiu Tam

引用次数: 0

Revealing the Limitations of the Thermocapacitive Cycle 揭示热容循环的局限性

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-01-15 DOI: 10.1021/acsnano.4c16370

Yining Lao, Pei Tang, Jinquan Zeng, Shan Xu, Jian Zhu, Qingyun Dou, Xiaohua Xiao, Xingbin Yan

引用次数: 0

Long-Range Charge Transport Facilitated by Electron Delocalization in MoS2 and Carbon Nanotube Heterostructures 二硫化钼和碳纳米管异质结构中电子离域促进的远距离电荷输运

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-01-15 DOI: 10.1021/acsnano.4c12858

Daria D. Blach, Dana B. Sulas-Kern, Bipeng Wang, Run Long, Qiushi Ma, Oleg V. Prezhdo, Jeffrey L. Blackburn, Libai Huang

{"title":"Long-Range Charge Transport Facilitated by Electron Delocalization in MoS2 and Carbon Nanotube Heterostructures","authors":"Daria D. Blach, Dana B. Sulas-Kern, Bipeng Wang, Run Long, Qiushi Ma, Oleg V. Prezhdo, Jeffrey L. Blackburn, Libai Huang","doi":"10.1021/acsnano.4c12858","DOIUrl":"https://doi.org/10.1021/acsnano.4c12858","url":null,"abstract":"Controlling charge transport at the interfaces of nanostructures is crucial for their successful use in optoelectronic and solar energy applications. Mixed-dimensional heterostructures based on single-walled carbon nanotubes (SWCNTs) and transition metal dichalcogenides (TMDCs) have demonstrated exceptionally long-lived charge-separated states. However, the factors that control the charge transport at these interfaces remain unclear. In this study, we directly image charge transport at the interfaces of single- and multilayered MoS2 and (6,5) SWCNT heterostructures using transient absorption microscopy. We find that charge recombination becomes slower as the layer thickness of MoS2 increases. This behavior can be explained by electron delocalization in multilayers and reduced orbital overlap with the SWCNTs, as suggested by nonadiabatic (NA) molecular dynamics (MD) simulations. Dipolar repulsion of interfacial excitons results in rapid density-dependent transport within the first 100 ps. Stronger repulsion and longer-range charge transport are observed in heterostructures with thicker MoS2 layers, driven by electron delocalization and larger interfacial dipole moments. These findings are consistent with the results from NAMD simulations. Our results suggest that heterostructures with multilayer MoS2 can facilitate long-lived charge separation and transport, which is promising for applications in photovoltaics and photocatalysis.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"3 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142986142","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}

引用次数: 0

A Thermally Robust Biopolymeric Separator Conveys K+ Transport and Interfacial Chemistry for Longevous Potassium Metal Batteries 热稳健的生物聚合物分离器传递K+传输和界面化学的长寿钾金属电池

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-01-15 DOI: 10.1021/acsnano.4c16664

Yuyuan Wang, Liang Xu, Xiaopeng Chen, Ziang Chen, Xinhua Li, Wenyi Guo, Tao Cheng, Yuyang Yi, Jingyu Sun

{"title":"A Thermally Robust Biopolymeric Separator Conveys K+ Transport and Interfacial Chemistry for Longevous Potassium Metal Batteries","authors":"Yuyuan Wang, Liang Xu, Xiaopeng Chen, Ziang Chen, Xinhua Li, Wenyi Guo, Tao Cheng, Yuyang Yi, Jingyu Sun","doi":"10.1021/acsnano.4c16664","DOIUrl":"https://doi.org/10.1021/acsnano.4c16664","url":null,"abstract":"Potassium metal batteries (KMBs) hold promise for stationary energy storage with certain cost and resource merits. Nevertheless, their practicability is greatly handicapped by dendrite-related anodes, and the target design of specialized separators to boost anode safety is in its nascent stage. Here, we develop a thermally robust biopolymeric separator customized via a solvent-exchange and amino-siloxane decoration strategy to render durable and safe KMBs. Through experimental investigation and theoretical computation, we reveal that the optimized porosity and surface functionalization could manage ion transport and interfacial chemistry, thereby enabling efficient K+ diffusion and a favorable solid electrolyte interphase to achieve prolonged cycling stability (over 3000 h). The thus-assembled full cell retains 80% of its initial capacity after 400 cycles at 0.5 A g–1. The heat-proof property of the designed separator is further demonstrated. Our biopolymeric separator, affording multifunctional features, provides an appealing solution to circumvent instability and safety issues associated with potassium metal batteries.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"22 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142986150","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}

引用次数: 0

Advances, Challenges, and Opportunities in Plasmonic Nanogap-Enhanced Raman Scattering with Nanoparticles 纳米粒子等离子体纳米隙增强拉曼散射的进展、挑战和机遇

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-01-15 DOI: 10.1021/acsnano.4c14557

Gyeong-Hwan Kim, Jiwoong Son, Jwa-Min Nam

引用次数: 0

Parameter Pool-Assisted Centrifugation Sorter for Multiscale Higher-Order DNA Nanomaterials 多尺度高阶DNA纳米材料的参数池辅助离心分选

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-01-15 DOI: 10.1021/acsnano.4c15100

Lilin Ouyang, Junke Wang, Bing Liu, Mo Xie, Lianhui Wang, Chunhai Fan, Jie Chao

{"title":"Parameter Pool-Assisted Centrifugation Sorter for Multiscale Higher-Order DNA Nanomaterials","authors":"Lilin Ouyang, Junke Wang, Bing Liu, Mo Xie, Lianhui Wang, Chunhai Fan, Jie Chao","doi":"10.1021/acsnano.4c15100","DOIUrl":"https://doi.org/10.1021/acsnano.4c15100","url":null,"abstract":"Higher-order DNA nanomaterials have emerged as programmable tools for probing biological processes, constructing metamaterials, and manipulating mechanically active nanodevices with the multifunctionality and high-performance attributes. However, their utility is limited by intricate mixtures formed during hierarchical multistage assembly, as standard techniques like gel electrophoresis lack the resolution and applicability needed for precise characterization and enrichment. Thus, it is urgent to develop a sorter that provides high separation resolution, broad scope, and bioactive functionality. Here, we present a versatile and scalable sorting pipeline based on a centrifugation parameter pool capable of distinguishing DNA nanomaterials across multiple scales. By tuning parameters, we achieved high-throughput classification of nanostructures, spanning from DNA tile-based constructs to DNA origami-based assemblies (∼50 MDa, 75,000 bp), surpassing conventional methods. Furthermore, we optimized the separation resolution to less than 78 kDa (∼120 bp) at a large scale by sorting DNA tetrahedron structures using this systematic parameter pool-assisted centrifugation strategy. This sorter maintains the integrity and functionality of bioactive materials, facilitating a seamless transition from assembly to application, allowing for integration with proteins and other components to achieve the fabrication of complex functional materials and programmable molecular machines across interdisciplinary fields within the nanotechnology community.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"118 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142981573","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}

引用次数: 0

Robust and Regular Micronano Binary Texture on the Complex Curved Surface for Enhanced Reendothelialization and Antithrombotic Performance 复杂曲面上稳健和规则的微纳米二元纹理增强再内皮化和抗血栓性能

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-01-15 DOI: 10.1021/acsnano.4c14191

Jing Zhang, Wenyuan Yu, Guoqiang Li, Guiling Li, Baolan Chen, Luwen Wang, Yang Yu, Zhiyuan Liu, Donghai Li

{"title":"Robust and Regular Micronano Binary Texture on the Complex Curved Surface for Enhanced Reendothelialization and Antithrombotic Performance","authors":"Jing Zhang, Wenyuan Yu, Guoqiang Li, Guiling Li, Baolan Chen, Luwen Wang, Yang Yu, Zhiyuan Liu, Donghai Li","doi":"10.1021/acsnano.4c14191","DOIUrl":"https://doi.org/10.1021/acsnano.4c14191","url":null,"abstract":"Blood-contacting medical devices can easily trigger immune responses, leading to thrombosis and hyperblastosis. Constructing microtexture that provides efficient antithrombotic and rapid reendothelialization performance on complex curved surfaces remains a pressing challenge. In this work, we present a robust and regular micronano binary texture on the titanium surface, characterized by exceptional mechanical strength and precisely controlled wettability to achieve excellent hemocompatibility. Systematic in vitro and in vivo investigations confirmed that the micronano binary texture with superhydrophilic modification effectively suppressed the adhesion and activation of plasma proteins and blood cells, thereby mitigating the subsequent coagulation cascade and thrombosis. Meanwhile, the modified surface significantly upregulated the gene expression involving cell–matrix adhesion, growth factor synthesis, and calcium-mediated cytoskeleton remodeling and then accelerated the formation of a healthy and stable endothelial cell layer. This enhancement of re-endothelialization was not observed with pure titanium and superhydrophobic surfaces. Hence, superhydrophilic micronano binary texture not only significantly inhibits thrombosis but also selectively enhances the integrity and viability of the endothelial cell layer, making it a promising strategy for improving the long-term anticoagulation performance of vascular implants.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"12 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142986146","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}

引用次数: 0

Moisture-Electric Generators Working in Subzero Environments Based on Laser-Engraved Hygroscopic Hydrogel Arrays 基于激光雕刻吸湿水凝胶阵列的可在零度以下环境中工作的湿气-电力发生器

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-01-15 DOI: 10.1021/acsnano.4c14996

Fei Yu, Liying Wang, Xijia Yang, Yue Yang, Xuesong Li, Yang Gao, Yi Jiang, Ke Jiang, Wei Lü, Xiaojuan Sun, Dabing Li

{"title":"Moisture-Electric Generators Working in Subzero Environments Based on Laser-Engraved Hygroscopic Hydrogel Arrays","authors":"Fei Yu, Liying Wang, Xijia Yang, Yue Yang, Xuesong Li, Yang Gao, Yi Jiang, Ke Jiang, Wei Lü, Xiaojuan Sun, Dabing Li","doi":"10.1021/acsnano.4c14996","DOIUrl":"https://doi.org/10.1021/acsnano.4c14996","url":null,"abstract":"Moisture-electric generators (MEGs) generate power by adsorbing water from the air. However, their performance at low temperatures is hindered due to icing. In the present work, MEG arrays are developed by laser engraving techniques and a modulated low-temperature hydrogel as the absorbent material. LTH effectively captures moisture and maintains ion dissociation and migration even at subzero temperatures. Based on the double electric layer pseudocapacitance model, the oscillating circuit theory is introduced to explain the effects of moisture absorption, evaporation, and ion migration on the output current of the MEG, and the circuit calculations are matched with the experimental results. Molecular dynamics simulations indicate that LTH’s low-temperature stability results from preferential hydrogen bonding between glycerol molecules and H2O, which disrupts H2O–H2O hydrogen bonds and slows water crystallization. A single MEG unit (0.25 cm2) can produce up to ∼0.8 V and ∼21.2 μW/cm2 at room temperature, and at −35 °C with 16% RH, it generates ∼0.58 V and ∼14.35 μA. MEG realizes the following applications: MEG successfully drives electronic devices in snow; arrays of 16 MEGs can power portable electronics, and 384 MEGs can achieve up to 210 V; MEG absorbs moisture in water and drives LEDs by blowing up; MEG has a flexible wearable nature; MEG is used for respiratory monitoring and photoelectric sensors.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"8 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142981571","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}

引用次数: 0

Induction of Antigen-Specific Tolerance in a Multiple Sclerosis Model without Broad Immunosuppression 在没有广泛免疫抑制的多发性硬化模型中诱导抗原特异性耐受

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-01-15 DOI: 10.1021/acsnano.4c14698

Rebeca T. Stiepel, Sean R. Simpson, Nicole Rose Lukesh, Denzel D. Middleton, Dylan A. Hendy, Luis Ontiveros-Padilla, Stephen A. Ehrenzeller, Md Jahirul Islam, Erik S. Pena, Michael A. Carlock, Ted M. Ross, Eric M. Bachelder, Kristy M. Ainslie

{"title":"Induction of Antigen-Specific Tolerance in a Multiple Sclerosis Model without Broad Immunosuppression","authors":"Rebeca T. Stiepel, Sean R. Simpson, Nicole Rose Lukesh, Denzel D. Middleton, Dylan A. Hendy, Luis Ontiveros-Padilla, Stephen A. Ehrenzeller, Md Jahirul Islam, Erik S. Pena, Michael A. Carlock, Ted M. Ross, Eric M. Bachelder, Kristy M. Ainslie","doi":"10.1021/acsnano.4c14698","DOIUrl":"https://doi.org/10.1021/acsnano.4c14698","url":null,"abstract":"Multiple sclerosis (MS) is a severe autoimmune disorder that wreaks havoc on the central nervous system, leading to a spectrum of motor and cognitive impairments. There is no cure, and current treatment strategies rely on broad immunosuppression, leaving patients vulnerable to infections. To address this problem, our approach aims to induce antigen-specific tolerance, a much-needed shift in MS therapy. We have engineered a tolerogenic therapy consisting of spray-dried particles made of a degradable biopolymer, acetalated dextran, and loaded with an antigenic peptide and tolerizing drug, rapamycin (Rapa). After initial characterization and optimization, particles were tested in a myelin oligodendrocyte glycoprotein (MOG)-induced experimental autoimmune encephalomyelitis model of MS. Representing the earliest possible time of diagnosis, mice were treated at symptom onset in an early therapeutic model, where particles containing MOG and particles containing Rapa+MOG evoked significant reductions in clinical score. Particles were then applied to a highly clinically relevant late therapeutic model during peak disease, where MOG particles and Rapa+MOG particles each elicited a dramatic therapeutic effect, reversing hind limb paralysis and restoring fully functional limbs. To confirm the antigen specificity of our therapy, we immunized mice against the influenza antigen hemagglutinin (HA) and treated them with MOG particles or Rapa+MOG particles. The particles did not suppress antibody responses against HA. Our findings underscore the potential of this particle-based therapy to reverse autoimmunity in disease-relevant models without compromising immune competence, setting it apart from existing treatments.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"1 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142981570","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}

引用次数: 0