{"title":"Improving Electron and Ion Transport in Nano-Si Anodes through Integration with Conductive Nano-Metal–Organic Frameworks","authors":"Fei Dou, Yanfangchen Chang, Yanfei Zhang, Qian Li, Tsung-Yi Chen, Yan Yan, Yangyang Sun, Xiaotian Guo, Chenhui Yin, Huijie Zhou, Han-Yi Chen and Huan Pang*, ","doi":"10.1021/acs.nanolett.5c0083210.1021/acs.nanolett.5c00832","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00832https://doi.org/10.1021/acs.nanolett.5c00832","url":null,"abstract":"<p >Conductive metal–organic frameworks (c-MOFs) and nanosilicon (nano-Si) composites (Si–M–HHTP, M = Co, Ni, or Cu, HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene) were synthesized using a single-step methodology to enhance the performance of nano-Si anodes in lithium-ion batteries. The promoting role of M–HHTP is reflected in the following: (i) extensive π–d conjugation enhances electrical conductivity; (ii) molecules stack into 2D rods for rapid Li<sup>+</sup> transport; (iii) 2D rods construct a 3D structure to mitigate volume expansion. Electrochemical tests demonstrate that the 3D structure and conductive M–HHTP play a significant role in stabilizing the long-term cycling performance and enhancing rate capabilities. Moreover, the varying electrochemical properties observed in Si–Co–HHTP, Si–Ni–HHTP, and Si–Cu–HHTP can be attributed to the different electrochemical interactions between Co<sup>2+</sup>, Ni<sup>2+</sup>, and Cu<sup>2+</sup> center coordination ions and Li<sup>+</sup>. The synergistic integration of nano-Si and c-MOFs presents a compelling approach for the development of high-performance lithium-ion batteries with high capacities, extended cycle lives, and superior rate performance.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 22","pages":"8915–8922 8915–8922"},"PeriodicalIF":9.6,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144202608","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}
{"title":"Edge-Oriented Surface Plasmons and Out-of-Plane Phonon-Coupling-Manipulated Davydov Splitting in WS2 Flakes with Nonexciton Resonance Excitation under Ambient Conditions","authors":"Yongle Dong, Zhexiao Li, Zixuan Yan, Yan Liu, Luyi Huang, Meng Xia, Xingwang Zhang, Ling Zhang","doi":"10.1021/acs.nanolett.5c01636","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01636","url":null,"abstract":"Two-dimensional (2D) materials with van der Waals (vdW) interactions have driven significant advancements in electronics, optics, and materials science. Controlling and understanding interlayer interactions are crucial to expanding their potential applications. Davydov splitting, which is associated with phonon–electron–exciton-coupling dynamics, offers a method to investigate and assess interlayer interactions in 2D vdW materials. Here we report a significant Davydov splitting of the out-of-plane (OP) mode observed in 10-nm-thick WS<sub>2</sub> flakes placed at the edge of gold thin films under ambient conditions. The Raman intensity of the OP mode increased over 1000-fold due to the coupling between OP phonons and edge-oriented plasmons, accompanied by a splitting peak controllable via polarized incident light and surface plasmons. The plasmon–phonon-coupling-induced splitting under nonexciton resonance excitation offers a new approach to controlling interlayer coupling in multilayer 2D materials, unlocking further opportunities for manipulating quantum phenomena in vdW homostructures and heterostructures.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"22 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130192","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}
Nano LettersPub Date : 2025-05-24DOI: 10.1021/acs.nanolett.5c0163610.1021/acs.nanolett.5c01636
Yongle Dong, Zhexiao Li, Zixuan Yan, Yan Liu, Luyi Huang, Meng Xia, Xingwang Zhang and Ling Zhang*,
{"title":"Edge-Oriented Surface Plasmons and Out-of-Plane Phonon-Coupling-Manipulated Davydov Splitting in WS2 Flakes with Nonexciton Resonance Excitation under Ambient Conditions","authors":"Yongle Dong, Zhexiao Li, Zixuan Yan, Yan Liu, Luyi Huang, Meng Xia, Xingwang Zhang and Ling Zhang*, ","doi":"10.1021/acs.nanolett.5c0163610.1021/acs.nanolett.5c01636","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01636https://doi.org/10.1021/acs.nanolett.5c01636","url":null,"abstract":"<p >Two-dimensional (2D) materials with van der Waals (vdW) interactions have driven significant advancements in electronics, optics, and materials science. Controlling and understanding interlayer interactions are crucial to expanding their potential applications. Davydov splitting, which is associated with phonon–electron–exciton-coupling dynamics, offers a method to investigate and assess interlayer interactions in 2D vdW materials. Here we report a significant Davydov splitting of the out-of-plane (OP) mode observed in 10-nm-thick WS<sub>2</sub> flakes placed at the edge of gold thin films under ambient conditions. The Raman intensity of the OP mode increased over 1000-fold due to the coupling between OP phonons and edge-oriented plasmons, accompanied by a splitting peak controllable via polarized incident light and surface plasmons. The plasmon–phonon-coupling-induced splitting under nonexciton resonance excitation offers a new approach to controlling interlayer coupling in multilayer 2D materials, unlocking further opportunities for manipulating quantum phenomena in vdW homostructures and heterostructures.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 22","pages":"9077–9083 9077–9083"},"PeriodicalIF":9.6,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144202609","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}
{"title":"Two-Dimensional Ferroelectric Altermagnets: From Model to Material Realization","authors":"Ziye Zhu, Xunkai Duan, Jiayong Zhang, Bowen Hao, Igor Žutić, Tong Zhou","doi":"10.1021/acs.nanolett.5c02121","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c02121","url":null,"abstract":"Multiferroic altermagnets offer new opportunities for magnetoelectric coupling and electrically tunable spintronics. However, due to intrinsic symmetry conflicts between altermagnetism and ferroelectricity, achieving their coexistence, known as ferroelectric altermagnets (FEAM), remains an outstanding challenge, especially in two-dimensional (2D) systems. Here, we propose a universal, symmetry-based design principle for 2D FEAM, supported by tight-binding models and first-principles calculations. We show that lattice distortions can break the spin equivalence and introduce the necessary rotation-related symmetry, enabling altermagnetism with electrically reversible spin splitting. Guided by this framework, we identify a family of 2D vanadium oxyhalides and sulfide halides as promising FEAM candidates. In these compounds, pseudo-Jahn–Teller distortions and Peierls-like dimerization cooperatively establish the required symmetry conditions. We further propose the magneto-optical Kerr effect as an experimental probe to confirm FEAM and its electric spin reversal. Our findings provide a practical framework for 2D FEAM and advancing electrically controlled spintronic devices.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"238 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130193","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}
Nano LettersPub Date : 2025-05-23DOI: 10.1021/acs.nanolett.5c00919
David Lamprecht, Anna Benzer, Manuel Längle, Mate Capin, Clemens Mangler, Toma Susi, Lado Filipovic, Jani Kotakoski
{"title":"Uncovering the Atomic Structure of Substitutional Platinum Dopants in MoS2 with Single-Sideband Ptychography","authors":"David Lamprecht, Anna Benzer, Manuel Längle, Mate Capin, Clemens Mangler, Toma Susi, Lado Filipovic, Jani Kotakoski","doi":"10.1021/acs.nanolett.5c00919","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00919","url":null,"abstract":"We substitute individual Pt atoms into monolayer MoS<sub>2</sub> and study the resulting atomic structures with single-sideband ptychography (SSB) supported by <i>ab initio</i> simulations. We demonstrate that while high-angle annular dark-field (HAADF) scanning transmission electron microscopy (STEM) imaging provides excellent <i>Z</i>-contrast, distinguishing some defect types such as single and double sulfur vacancies remains challenging due to their low relative contrast difference. However, SSB with its nearly linear <i>Z</i>-contrast and high phase sensitivity enables reliable identification of these defect configurations, as well as various Pt dopant structures at significantly lower electron doses. Our findings uncover the precise atomic placement and highlight the potential of SSB for detailed structural analysis of dopant-modified 2D materials while minimizing beam-induced damage, offering new pathways for understanding and engineering atomic-scale features in 2D systems.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"22 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130237","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}
Nano LettersPub Date : 2025-05-23DOI: 10.1021/acs.nanolett.5c0125910.1021/acs.nanolett.5c01259
Guixiang Ding, Juntao Zhang, Di Yan, Yaqin Yu, Li Shuai*, Lihui Chen* and Guangfu Liao*,
{"title":"High-Entropy Regulation of Lattice Oxygen p-Band toward Sustainable Electrocatalytic Biomass Valorization","authors":"Guixiang Ding, Juntao Zhang, Di Yan, Yaqin Yu, Li Shuai*, Lihui Chen* and Guangfu Liao*, ","doi":"10.1021/acs.nanolett.5c0125910.1021/acs.nanolett.5c01259","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01259https://doi.org/10.1021/acs.nanolett.5c01259","url":null,"abstract":"<p >Electrocatalytic 5-hydroxymethylfurfural oxidation reaction (HMFOR) presents a promising approach for converting biomass derivatives into high-value chemicals but is challenging due to poor stability and low Faradaic efficiency. Herein, we present a high-entropy NiCoFeMnAl layer double hydroxide (NiCoFeMnAl-LDH) for HMFOR via a hydrothermal method. At a potential of 1.43 V vs RHE, the process demonstrates exceptional performance with 100% HMF conversion, 99.09% selectivity for 2,5-furandicarboxylic acid (FDCA), and Faradaic efficiency of 96.9%, which outperform the majority of previously reported state-of-the-art electrocatalysts. The impressive performance is primarily attributed to the high-entropy surface chemical environment that regulates the p-band center of lattice oxygen, thereby reducing the Gibbs free energy of the rate-determining step and accelerating the kinetics of charge transfer. Moreover, NiCoFeMnAl-LDH significantly mitigates the common issue of carbon deposition observed in traditional LDH-based materials, thereby enhancing the stability for HMFOR. The tuning of the lattice oxygen p-band center provides valuable insights for the design of high-performance electrocatalysts.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 22","pages":"8984–8992 8984–8992"},"PeriodicalIF":9.6,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144202594","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}
Nano LettersPub Date : 2025-05-23DOI: 10.1021/acs.nanolett.5c01892
Thomas M. Czyszczon-Burton, Enrique Montes, Jazmine Prana, Sully F. Chen, Christopher P. Pakhanyan, Héctor Vázquez, Michael S. Inkpen
{"title":"Thioether-Linked Single-Molecule Junctions with Coinage Metal Contacts","authors":"Thomas M. Czyszczon-Burton, Enrique Montes, Jazmine Prana, Sully F. Chen, Christopher P. Pakhanyan, Héctor Vázquez, Michael S. Inkpen","doi":"10.1021/acs.nanolett.5c01892","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01892","url":null,"abstract":"The influence of changing electrode material on the electrical and mechanical properties of metal–molecule–metal junctions is relatively poorly understood, yet an improved understanding of these interfaces remains critical to the implementation of such systems as active elements in real-world circuits. Accordingly, here we study single-molecule junctions comprising thioether-linked alkane and oligophenyl wires formed under an inert atmosphere using gold, silver, and copper electrodes. Break junction experiments and computational simulations reveal that the conductance of junctions with different contacts typically decreases in the order gold > silver ≥ copper. Such trends cannot be explained solely from the differences in work function for these metals, which are modulated in junctions by the interface dipole. Transport calculations also expose the influence of electronic coupling to the electrodes, which is strongest for gold. Together, this study charts a coherent path toward a more complete understanding of the role of the electrode in single-molecule devices.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"21 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144122829","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}
Nano LettersPub Date : 2025-05-23DOI: 10.1021/acs.nanolett.5c01323
Chari Y. M. Peter, Chayan Carmenate Rodríguez, Hannah N. Gorski, Elizabeth O. Phinney, Todd D. Krauss, Ellen M. Matson
{"title":"Modulating Hole Transfer from CdSe Quantum Dots by Manipulating the Surface Ligand Density","authors":"Chari Y. M. Peter, Chayan Carmenate Rodríguez, Hannah N. Gorski, Elizabeth O. Phinney, Todd D. Krauss, Ellen M. Matson","doi":"10.1021/acs.nanolett.5c01323","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01323","url":null,"abstract":"The structure and density of surface capping ligands in cadmium chalcogenide quantum dots (QDs) are important considerations for controlling the efficiency of charge separation via the transfer of electrons or holes to molecular acceptors. Here we show how the manipulation of the surface ligand density of oleic acid-capped cadmium selenide (CdSe) QDs impacts the efficiency of hole transfer (HT) to polyoxovanadate alkoxides. Meerwein’s salt is used as a ligand-stripping agent, providing opportunities to quantitatively manipulate the ligand density at the surface of the nanocrystal, as evidenced by <sup>1</sup>H NMR spectroscopy. Time-resolved photoluminescence and transient absorption spectroscopies reveal that the extent of HT is quantitatively related to increased surface accessibility. Collectively, these results show that the reduction of surface ligand density can be used to tune the extent of interactions of molecular acceptors with QDs, providing a route to control charge-transfer processes relevant to improving the efficiency of QDs as photosensitizers.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"46 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130234","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}
Nano LettersPub Date : 2025-05-23DOI: 10.1021/acs.nanolett.5c01747
Yu Li, Lu Qian, Fei Liu, Shilong Xu, Lian Zhou, Chenxi Wei, Yanqin Zhang, Yuewen Zhai, Yueqing Gu, Siwen Li
{"title":"Light-Controlled Small Extracellular Vesicle-Based Spherical Nucleic Acid Nanomotor for Enhanced Transdermal Delivery against Skin Aging","authors":"Yu Li, Lu Qian, Fei Liu, Shilong Xu, Lian Zhou, Chenxi Wei, Yanqin Zhang, Yuewen Zhai, Yueqing Gu, Siwen Li","doi":"10.1021/acs.nanolett.5c01747","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01747","url":null,"abstract":"Small extracellular vesicles (sEV) derived from mesenchymal stem cells hold promise for anti-skin aging, yet their clinical application is hindered by poor transdermal permeability. Herein, we report an innovative light-controlled sEV-based spherical nucleic acid nanomotor (NM-ESNA). This nanosystem was composed of an sEV core and an MMP1-targeting siRNA shell, forming a 3D penetrative nanostructure. In addition, asymmetrically modified light-responsive gas-generating molecules were integrated into the nanomotor, enabling efficient dermal delivery. The light-controlled and enhanced transdermal delivery guaranteed synergistic anti-skin aging therapy through sEV-mediated paracrine effects and gene therapy targeting MMP1 in the dermis. On the basis of this deep transdermal delivery technology and the synergistic therapy strategy, NM-ESNA demonstrated outstanding anti-skin aging effects in a mouse model. This biocompatible nanosystem (NM-ESNA) enabled light-controlled and deep transdermal delivery, establishing a therapeutic platform with significant potential for sEV-based noninvasive anti-skin aging therapy.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"138 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130236","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}
Nano LettersPub Date : 2025-05-23DOI: 10.1021/acs.nanolett.5c0189210.1021/acs.nanolett.5c01892
Thomas M. Czyszczon-Burton, Enrique Montes, Jazmine Prana, Sully F. Chen, Christopher P. Pakhanyan, Héctor Vázquez* and Michael S. Inkpen*,
{"title":"Thioether-Linked Single-Molecule Junctions with Coinage Metal Contacts","authors":"Thomas M. Czyszczon-Burton, Enrique Montes, Jazmine Prana, Sully F. Chen, Christopher P. Pakhanyan, Héctor Vázquez* and Michael S. Inkpen*, ","doi":"10.1021/acs.nanolett.5c0189210.1021/acs.nanolett.5c01892","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01892https://doi.org/10.1021/acs.nanolett.5c01892","url":null,"abstract":"<p >The influence of changing electrode material on the electrical and mechanical properties of metal–molecule–metal junctions is relatively poorly understood, yet an improved understanding of these interfaces remains critical to the implementation of such systems as active elements in real-world circuits. Accordingly, here we study single-molecule junctions comprising thioether-linked alkane and oligophenyl wires formed under an inert atmosphere using gold, silver, and copper electrodes. Break junction experiments and computational simulations reveal that the conductance of junctions with different contacts typically decreases in the order gold > silver ≥ copper. Such trends cannot be explained solely from the differences in work function for these metals, which are modulated in junctions by the interface dipole. Transport calculations also expose the influence of electronic coupling to the electrodes, which is strongest for gold. Together, this study charts a coherent path toward a more complete understanding of the role of the electrode in single-molecule devices.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 22","pages":"9125–9131 9125–9131"},"PeriodicalIF":9.6,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.nanolett.5c01892","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144202598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}