Nano Letters最新文献_第10页

Continuous Covalent Organic Framework Membranes with Ordered Nanochannels as Tunable Transport Layers for Fast Butanol/Water Separation. 具有有序纳米通道的连续共价有机框架膜是用于快速分离丁醇/水的可调传输层。

IF 9.6 1区材料科学

Nano Letters Pub Date : 2024-09-18 Epub Date: 2024-09-06 DOI: 10.1021/acs.nanolett.4c02458

Hukang Guo, Yijie Fang, Jiaqi Li, Weilin Feng, Chuanjie Fang, Liping Zhu

{"title":"Continuous Covalent Organic Framework Membranes with Ordered Nanochannels as Tunable Transport Layers for Fast Butanol/Water Separation.","authors":"Hukang Guo, Yijie Fang, Jiaqi Li, Weilin Feng, Chuanjie Fang, Liping Zhu","doi":"10.1021/acs.nanolett.4c02458","DOIUrl":"10.1021/acs.nanolett.4c02458","url":null,"abstract":"Polymeric membranes with high permselective performance are desirable for energy-saving bioalcohol separations. However, it remains challenging to design membrane microstructures with low-resistance channels and a thin thickness for fast alcohol transport. Herein, we demonstrate highly crystalline covalent organic framework (COF) membranes with ordered nanochannels as tunable transport layers for efficient butanol/water separation. The thickness was well-regulated by altering the concentration and molar ratio of two aldehyde monomers with different reactivity. The surface-integrated poly(dimethylsiloxane) produced defect-free and hydrophobic COF membranes. The membrane with continuous transport channels exhibited an exceptional flux of up to 18.8 kg m-2 h-1 and a pervaporation separation index of 217.7 kg m-2 h-1 for separating 5 wt % n-butanol/water. The separation efficiency exceeded that of analogous membranes. The calculated mass-transfer coefficient of butanol followed an inverse relationship with the COF membrane thickness. Consequently, this work reveals the great potential of crystalline polymeric membranes with high-density nanopores for biofuel recovery.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":9.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142142996","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

Direct Observation of the Reactivity of Electrons toward Gold Nanoparticles in Aqueous Solution 直接观察水溶液中电子与金纳米粒子的反应性

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-09-18 DOI: 10.1021/acs.nanolett.4c03396

Zhiwen Jiang, Mehran Mostafavi

引用次数: 0

Antiferroelectric Heterostructures Memristors with Unique Resistive Switching Mechanisms and Properties. 具有独特电阻开关机制和特性的反铁电异质结构晶闸管。

IF 9.6 1区材料科学

Nano Letters Pub Date : 2024-09-18 Epub Date: 2024-08-19 DOI: 10.1021/acs.nanolett.4c02705

Meng-Hsuan Yang, Che-Hung Wang, Yu-Hong Lai, Chien-Hua Wang, Yen-Jung Chen, Jui-Yuan Chen, Ying-Hao Chu, Wen-Wei Wu

{"title":"Antiferroelectric Heterostructures Memristors with Unique Resistive Switching Mechanisms and Properties.","authors":"Meng-Hsuan Yang, Che-Hung Wang, Yu-Hong Lai, Chien-Hua Wang, Yen-Jung Chen, Jui-Yuan Chen, Ying-Hao Chu, Wen-Wei Wu","doi":"10.1021/acs.nanolett.4c02705","DOIUrl":"10.1021/acs.nanolett.4c02705","url":null,"abstract":"A novel antiferroelectric material, PbSnO3 (PSO), was introduced into a resistive random access memory (RRAM) to reveal its resistive switching (RS) properties. It exhibits outstanding electrical performance with a large memory window (>104), narrow switching voltage distribution (±2 V), and low power consumption. Using high-resolution transmission electron microscopy, we observed the antiferroelectric properties and remanent polarization of the PSO thin films. The in-plane shear strains in the monoclinic PSO layer are attributed to oxygen octahedral tilts, resulting in misfit dislocations and grain boundaries at the PSO/SRO interface. Furthermore, the incoherent grain boundaries between the orthorhombic and monoclinic phases are assumed to be the primary paths of Ag+ filaments. Therefore, the RS behavior is primarily dominated by antiferroelectric polarization and defect mechanisms for the PSO structures. The RS behavior of antiferroelectric heterostructures controlled by switching spontaneous polarization and strain, defects, and surface chemistry reactions can facilitate the development of new antiferroelectric device systems.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":9.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141998851","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

Visualization of Biomolecular Radiation Damage at the Single-Particle Level Using Lanthanide-Sensitized DNA Origami. 利用镧系元素敏化 DNA 折纸在单粒子水平实现生物分子辐射损伤的可视化。

IF 9.6 1区材料科学

Nano Letters Pub Date : 2024-09-18 Epub Date: 2024-09-03 DOI: 10.1021/acs.nanolett.4c03307

Minle Chen, Yijuan Jiang, Yongjie Zhang, Xiaoling Chen, Lei Xie, Lili Xie, Tao Zeng, Yana Liu, Hao Liu, Min Wang, Xiaofeng Chen, Zhenzhen Zhang, Yu He, Xian Qin, Chunhua Lu, Qiushui Chen, Huanghao Yang

{"title":"Visualization of Biomolecular Radiation Damage at the Single-Particle Level Using Lanthanide-Sensitized DNA Origami.","authors":"Minle Chen, Yijuan Jiang, Yongjie Zhang, Xiaoling Chen, Lei Xie, Lili Xie, Tao Zeng, Yana Liu, Hao Liu, Min Wang, Xiaofeng Chen, Zhenzhen Zhang, Yu He, Xian Qin, Chunhua Lu, Qiushui Chen, Huanghao Yang","doi":"10.1021/acs.nanolett.4c03307","DOIUrl":"10.1021/acs.nanolett.4c03307","url":null,"abstract":"Precise monitoring of biomolecular radiation damage is crucial for understanding X-ray-induced cell injury and improving the accuracy of clinical radiotherapy. We present the design and performance of lanthanide-DNA-origami nanodosimeters for directly visualizing radiation damage at the single-particle level. Lanthanide ions (Tb3+ or Eu3+) coordinated with DNA origami nanosensors enhance the sensitivity of X-ray irradiation. Atomic force microscopy (AFM) revealed morphological changes in Eu3+-sensitized DNA origami upon X-ray irradiation, indicating damage caused by ionization-generated electrons and free radicals. We further demonstrated the practical applicability of Eu3+-DNA-origami integrated chips in precisely monitoring radiation-mediated cancer radiotherapy. Quantitative results showed consistent trends with flow cytometry and histological examination under comparable X-ray irradiation doses, providing an affordable and user-friendly visualization tool for preclinical applications. These findings provide new insights into the impact of heavy metals on radiation-induced biomolecular damage and pave the way for future research in developing nanoscale radiation sensors for precise clinical radiography.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":9.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142118358","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

Unraveling the Origin of Reverse Plasmonic Circular Dichroism from Discrete Bichiral Au Nanoparticles. 揭示离散双手性金纳米粒子反向等离子体圆二色性的起源。

IF 9.6 1区材料科学

Nano Letters Pub Date : 2024-09-18 Epub Date: 2024-09-04 DOI: 10.1021/acs.nanolett.4c03331

Jian Yang, Lichao Sun, Xuehao Sun, Jiqing Tan, Hongxing Xu, Qingfeng Zhang

引用次数: 0

Infrared Spectroscopy of Live Cells Using High-Aspect-Ratio Metal-on-Dielectric Metasurfaces. 利用高光谱比金属介电金属表面对活细胞进行红外光谱分析。

IF 9.6 1区材料科学

Nano Letters Pub Date : 2024-09-18 Epub Date: 2024-09-09 DOI: 10.1021/acs.nanolett.4c03155

Aditya Mahalanabish, Steven H Huang, Dias Tulegenov, Gennady Shvets

引用次数: 0

Accelerated Solar-Driven Polyolefin Degradation via Self-Activated Hydroxy-Rich ZnIn₂S₄. 通过自激活富羟基 ZnIn2S4 加速太阳能驱动的聚烯烃降解。

IF 9.6 1区材料科学

Nano Letters Pub Date : 2024-09-18 Epub Date: 2024-09-03 DOI: 10.1021/acs.nanolett.4c03067

Haoze Li, Shan Jiang, Shan He, Yingbing Zhang, Ye Chen, Li Wang, Jianping Yang

{"title":"Accelerated Solar-Driven Polyolefin Degradation via Self-Activated Hydroxy-Rich ZnIn2S4.","authors":"Haoze Li, Shan Jiang, Shan He, Yingbing Zhang, Ye Chen, Li Wang, Jianping Yang","doi":"10.1021/acs.nanolett.4c03067","DOIUrl":"10.1021/acs.nanolett.4c03067","url":null,"abstract":"Degradation of polyolefin (PE) plastic by a traditional chemical method requires a high pressure and a high temperature but generates complex products. Here, sulfur vacancy-rich ZnIn2S4 and hydroxy-rich ZnIn2S4 were rationally fabricated to realize photocatalytic degradation of PE in an aqueous solution under mild conditions. The results reveal that the optimized photocatalyst could degrade PE into CO2 and CO, and PE had a weight loss of 84.5% after reaction for 60 h. Systematic experiments confirm that the synergetic effect of hydroxyl groups and S vacancies contributes to improve the photocatalytic degradation properties of plastic wastes. In-depth investigation illustrates that the active radicals attack (h+ and •OH) weak spots (C-H and C-C bonds) of the PE chain to form CO2, which is further selectively photoreduced to CO. Multimodule synergistic tandem catalysis can further improve the utilization value of plastic wastes; for example, product CO2/CO in the plastic degradation process can be converted in situ into HCOOH by coupling with electrocatalytic technology.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":9.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142118291","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

Atomic Defects Engineering Boosts Urea Synthesis toward Carbon Dioxide and Nitrate Coelectroreduction. 原子缺陷工程促进尿素合成，实现二氧化碳和硝酸盐共电还原。

IF 9.6 1区材料科学

Nano Letters Pub Date : 2024-09-18 Epub Date: 2024-09-09 DOI: 10.1021/acs.nanolett.4c03451

Zifan Xu, Zhengwu Yang, Huan Lu, Jiangchen Zhu, Junlin Li, Ming-Hui Fan, Zhi Zhao, Xiangdong Kong, Ke Wang, Zhigang Geng

{"title":"Atomic Defects Engineering Boosts Urea Synthesis toward Carbon Dioxide and Nitrate Coelectroreduction.","authors":"Zifan Xu, Zhengwu Yang, Huan Lu, Jiangchen Zhu, Junlin Li, Ming-Hui Fan, Zhi Zhao, Xiangdong Kong, Ke Wang, Zhigang Geng","doi":"10.1021/acs.nanolett.4c03451","DOIUrl":"10.1021/acs.nanolett.4c03451","url":null,"abstract":"The atomic defect engineering could feasibly decorate the chemical behaviors of reaction intermediates to regulate catalytic performance. Herein, we created oxygen vacancies on the surface of In(OH)3 nanobelts for efficient urea electrosynthesis. When the oxygen vacancies were constructed on the surface of the In(OH)3 nanobelts, the faradaic efficiency for urea reached 80.1%, which is 2.9 times higher than that (20.7%) of the pristine In(OH)3 nanobelts. At -0.8 V versus reversible hydrogen electrode, In(OH)3 nanobelts with abundant oxygen vacancies exhibited partial current density for urea of -18.8 mA cm-2. Such a value represents the highest activity for urea electrosynthesis among recent reports. Density functional theory calculations suggested that the unsaturated In sites adjacent to oxygen defects helped to optimize the adsorbed configurations of key intermediates, promoting both the C-N coupling and the activation of the adsorbed CO2NH2 intermediate. In-situ spectroscopy measurements further validated the promotional effect of the oxygen vacancies on urea electrosynthesis.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":9.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142152455","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

Stabilizing Dye-Sensitized Upconversion Hybrids by Cyclooctatetraene 环辛四烯稳定染料敏化上转换杂化物

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-09-18 DOI: 10.1021/acs.nanolett.4c03391

Yuxi Liu, Lulu Ning, Yijun Luo, Yin Huang, Zemin He, Hao Ma, Yuzhen Zhao, Jianjian Zhang, Deming Liu, Libing Fu, Steven J. Langford, Philip A. Gale, Yuxia Luo, Guochen Bao

{"title":"Stabilizing Dye-Sensitized Upconversion Hybrids by Cyclooctatetraene","authors":"Yuxi Liu, Lulu Ning, Yijun Luo, Yin Huang, Zemin He, Hao Ma, Yuzhen Zhao, Jianjian Zhang, Deming Liu, Libing Fu, Steven J. Langford, Philip A. Gale, Yuxia Luo, Guochen Bao","doi":"10.1021/acs.nanolett.4c03391","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c03391","url":null,"abstract":"Lanthanide-doped upconversion nanoparticles (UCNPs) can convert low-energy near-infrared (NIR) light into high-energy visible light, making them valuable for broad applications. UCNPs often suffer from poor light-harvesting capabilities, which can be significantly improved by incorporating organic dye antennas. However, the dye-sensitized upconversion systems are prone to severe photobleaching in an ambient atmosphere. Here, we present a synergistic approach to mitigate photobleaching by introducing triplet state quencher cyclooctatetraene (COT). COT effectively suppresses the generation of singlet oxygen by quenching the triplet states of the dye and consumes the existing singlet oxygen through oxidant reactions. The inclusion of COT extends the half-life of IR806 by 4.7-times by preventing the oxidation of its poly(methylene) chains. Without significantly affecting emission intensity and dynamics, COT effectively stabilized dye-UCNPs, demonstrating a notable 3.9-fold increase in half-life under continuous laser irradiation. Our findings suggest a new strategy to enhance the photostability of near-infrared dyes and dye-sensitized upconversion nanohybrids.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":10.8,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142237118","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

Single-Shot Multispectral Encoding: Advancing Optical Lithography for Encryption and Spectroscopy. 单镜头多光谱编码：推进用于加密和光谱学的光学光刻技术。

IF 9.6 1区材料科学

Nano Letters Pub Date : 2024-09-18 Epub Date: 2024-09-03 DOI: 10.1021/acs.nanolett.4c02153

Hyewon Shim, Geonwoong Park, Hyunsuk Yun, Sunmin Ryu, Yong-Young Noh, Cheol-Joo Kim

{"title":"Single-Shot Multispectral Encoding: Advancing Optical Lithography for Encryption and Spectroscopy.","authors":"Hyewon Shim, Geonwoong Park, Hyunsuk Yun, Sunmin Ryu, Yong-Young Noh, Cheol-Joo Kim","doi":"10.1021/acs.nanolett.4c02153","DOIUrl":"10.1021/acs.nanolett.4c02153","url":null,"abstract":"Most modern optical display and sensing devices utilize a limited number of spectral units within the visible range, based on human color perception. In contrast, the rapid advancement of machine-based pattern recognition and spectral analysis could facilitate the use of multispectral functional units, yet the challenge of creating complex, high-definition, and reproducible patterns with an increasing number of spectral units limits their widespread application. Here, we report a technique for optical lithography that employs a single-shot exposure to reproduce perovskite films with spatially controlled optical band gaps through light-induced compositional modulations. Luminescent patterns are designed to program correlations between spatial and spectral information, covering the entire visible spectral range. Using this platform, we demonstrate multispectral encoding patterns for encryption and multivariate optical converters for dispersive optics-free spectroscopy with high spectral resolution. The fabrication process is conducted at room temperature and can be extended to other material and device platforms.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":9.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142118355","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