Nano Letters最新文献

Semiconductor Superstructures with Multiple Synergistic Resonances for SERS Exploring Multiplex Noncovalent Interactions

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-04-10 DOI: 10.1021/acs.nanolett.5c00724

Jiaojiao Zhao, Lei Sun, Yumiao Dong, Yixuan Chang, Haisu Wang, Zonghao Liu, Junbo Li, Yunfei Xie, Wei Ji

{"title":"Semiconductor Superstructures with Multiple Synergistic Resonances for SERS Exploring Multiplex Noncovalent Interactions","authors":"Jiaojiao Zhao, Lei Sun, Yumiao Dong, Yixuan Chang, Haisu Wang, Zonghao Liu, Junbo Li, Yunfei Xie, Wei Ji","doi":"10.1021/acs.nanolett.5c00724","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00724","url":null,"abstract":"Noncovalent interactions (NCIs) are crucial for biological bond-forming events and have significant applications across various branches of chemistry. Here, we demonstrate for the first time the identification of multiple NCIs between two interacting species using semiconductor-based surface-enhanced Raman scattering (SERS) spectroscopy. This was accomplished by designing submicrometer-sized TiO2 superstructures with synergistic effects of Mie and charge-transfer resonances for SERS enhancement, enabling the TiO2/4-mercaptobenzoic acid (MBA) system to achieve both high SERS activity and interfacial charge-transfer sensitivity. The results clearly indicate that the vibrational frequencies of MBA shift in correlation with various intermolecular interactions from hydrogen-bonding to ionic interactions. Multiple SERS analyses of NCIs were conducted for both the four DNA bases and single-stranded DNA sequences. Additionally, we performed a proof-of-concept study utilizing the relative SERS intensity to detect the relative content of two bases in single-stranded DNA sequences. This study unlocks potential applications of semiconductor SERS for exploring intermolecular-specific interactions.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"24 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814251","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

Chemical Doping Reveals Band-like Charge Transport at Grain Boundaries in Organic Transistors

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-04-10 DOI: 10.1021/acs.nanolett.5c00928

Yating Li, Mengmeng Niu, Junpeng Zeng, Quan Zhou, Xu Wu, Wei Ji, Yeliang Wang, Ren Zhu, Jingsi Qiao, Jianbin Xu, Yi Shi, Xinran Wang, Daowei He

{"title":"Chemical Doping Reveals Band-like Charge Transport at Grain Boundaries in Organic Transistors","authors":"Yating Li, Mengmeng Niu, Junpeng Zeng, Quan Zhou, Xu Wu, Wei Ji, Yeliang Wang, Ren Zhu, Jingsi Qiao, Jianbin Xu, Yi Shi, Xinran Wang, Daowei He","doi":"10.1021/acs.nanolett.5c00928","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00928","url":null,"abstract":"Organic semiconductors are highly promising as channel materials for energy-efficient, cost-effective, and flexible electronics. However, grain boundaries (GBs) can cause significant device performance variation, posing a major challenge for the development of high-performance organic circuits. In this work, we effectively passivated GB-induced traps in monolayer organic thin-film transistors (OTFTs) via p-type doping with the organic salt TrTPFB. The doping strategy broadens the mobility edge, effectively shielding GB-induced energy barriers and Coulomb scattering, and promotes deeper nonlocalized hybridization states for conduction. Consequently, the charge transport mechanism transitions from multiple trapping and release (MTR) to a more band-like behavior, even when GBs are present within the device channel. The doped OTFTs demonstrate ultralow mobility variation (1.4%) and threshold voltage variation (4.9%), as well as record-low contact resistant of RC = 0.6 Ω·cm, outperforming most single-crystal technologies. These performance metrics render doped monolayer polycrystalline films highly promising candidates for industrial-scale organic electronics.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"187 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814021","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

Fe Atomic Monolayer in a Coherent Interface: Electrostatic Potential-Induced Segregation and Interfacial Magnetism

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-04-10 DOI: 10.1021/acs.nanolett.5c00820

Ang Tao, Yixiao Jiang, Jiaqi Liu, Tingting Yao, Xuexi Yan, Hengqiang Ye, Xiu-Liang Ma, Chunlin Chen

{"title":"Fe Atomic Monolayer in a Coherent Interface: Electrostatic Potential-Induced Segregation and Interfacial Magnetism","authors":"Ang Tao, Yixiao Jiang, Jiaqi Liu, Tingting Yao, Xuexi Yan, Hengqiang Ye, Xiu-Liang Ma, Chunlin Chen","doi":"10.1021/acs.nanolett.5c00820","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00820","url":null,"abstract":"Interfaces and boundaries often trap various impurities so that they play a crucial role in tailoring the mechanical and physical properties of materials and devices. Due to the perfect lattice matching, impurity segregation at coherent interfaces and the corresponding effects on material properties have rarely been reported. In this study, we demonstrate the segregation of an Fe atomic monolayer in a Sr3MgSi2O8/SrTiO3 coherent heterointerface and the resulting interfacial magnetism by combining aberration-corrected transmission electron microscopy, magnetic force microscopy, and first-principles calculations. It is revealed that the segregated Fe atomic monolayer consists of Fe3+ ions and exhibits ferromagnetism. The Sr3MgSi2O8/SrTiO3 coherent interface shows no strain concentration with the Fe segregation driven by the minimization of interfacial electrostatic potential. These findings could deepen our understanding of impurity segregation at coherent interfaces. The as-received interfacial magnetism at the coherent interface is expected to play important roles in applications of future spintronic nanodevices.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"39 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814254","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

Phase Transformation Induced Basal Plane Capacitance Enhancement in Two-Dimensional Materials for Electro-Driven Ion Capture

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-04-10 DOI: 10.1021/acs.nanolett.5c00982

Zewei Hao, Jiabin Chen, Qipeng Zhao, Xiaoqian Liu, Mingchao Yang, Xuefei Zhou, Yalei Zhang

{"title":"Phase Transformation Induced Basal Plane Capacitance Enhancement in Two-Dimensional Materials for Electro-Driven Ion Capture","authors":"Zewei Hao, Jiabin Chen, Qipeng Zhao, Xiaoqian Liu, Mingchao Yang, Xuefei Zhou, Yalei Zhang","doi":"10.1021/acs.nanolett.5c00982","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00982","url":null,"abstract":"The capacitive deionization (CDI) technique using two-dimensional (2D) layered Faradaic electrodes offers a promising approach to desalination, but the desalination efficiency of currently engineered electrodes remains insufficient due to unclear charge storage mechanisms. Herein, based on typical 2H and 1T phases of MoS2, we systematically investigated the underlying structure–capacitance relationship of 2D materials at the atomic level by revealing differences in interlayer ion storage confined by molecular layers. Our study reveals that octahedrally coordinated 1T phase with a high spin state of unpaired electrons exhibits a higher pseudocapacitive ratio compared to the 2H phase because of the enhanced interfacial charge transfer polarization, reduced surface ion migration barriers, and increased interlayer ion enrichment. Furthermore, the potential molecular layer structure evolution triggers the dynamic migration of ion intercalation sites, further constraining the ion storage performance of the 2H phase. This study offers guidance for optimizing the ion storage performance of 2D materials through phase engineering.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814253","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

Curved Nanomagnets: An Archetype for the Skyrmionic States at Ambient Conditions

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-04-10 DOI: 10.1021/acs.nanolett.5c00773

Danian A. Dugato, Wesley B. F. Jalil, Ramon Cardias, Marcelo Albuquerque, Marcio Costa, Trevor P. Almeida, Kayla Fallon, András Kovács, Stephen McVitie, Rafal E. Dunin-Borkowski, Flavio Garcia

引用次数: 0

Fabricating Co9S8@NiWO4 Electrode toward Record Area Capacitance of 18.8 F cm–2 for High Performance Supercapacitor

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-04-10 DOI: 10.1021/acs.nanolett.5c01466

Zheng Cui, Wei Cheng, Yaning Liu, Junsong Liu, Nan Gao, Hongdong Li

{"title":"Fabricating Co9S8@NiWO4 Electrode toward Record Area Capacitance of 18.8 F cm–2 for High Performance Supercapacitor","authors":"Zheng Cui, Wei Cheng, Yaning Liu, Junsong Liu, Nan Gao, Hongdong Li","doi":"10.1021/acs.nanolett.5c01466","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01466","url":null,"abstract":"Realizing ultrahigh area capacitance based on suitable electrodes is a challenge for supercapacitors. In this work, an electrode is designed consisting of Co9S8 nanotubes and NiWO4 nanoparticles (named Co9S8@NiWO4) and fabricated by a hydrothermal process. The Co9S8@NiWO4 electrode realizes a record area capacitance of 18.8 F cm–2 at a current density of 5 mA cm–2 among the reports in the literature. The corresponding asymmetric supercapacitor shows high energy density of 0.48 mW h cm–2 at 2.42 mW cm–2 and superior cyclic stability of 79.2% retention over 7000 cycles at 10 mA cm–2. The great promotion in performance of Co9S8@NiWO4 electrode is synergistically attributed to high intrinsic theoretical capacitances of compounds, abundance polyvalent states, improved conductivity, and increases in reaction sites and rate of the electrode. This work provides a new route for designing highly efficient electrode for developing supercapacitors with high performance in practical applications.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"108 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814255","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

High-Entropy Spinel Oxide Nanostructures as Stable Cathodes for Solid Oxide Fuel Cells

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-04-09 DOI: 10.1021/acs.nanolett.4c06461

Zhaohui Chen, Ben Ma, Chen Dang, Jiahao Song, Yingke Zhou

{"title":"High-Entropy Spinel Oxide Nanostructures as Stable Cathodes for Solid Oxide Fuel Cells","authors":"Zhaohui Chen, Ben Ma, Chen Dang, Jiahao Song, Yingke Zhou","doi":"10.1021/acs.nanolett.4c06461","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c06461","url":null,"abstract":"Solid oxide fuel cells (SOFCs) represent a promising clean energy technology for efficient chemical-to-electrical energy conversion with minimal environmental impact. However, the development of cathode materials that can maintain both high performance and long-term stability remains challenging, particularly due to the degradation of nanostructured cathodes caused by particle coarsening. This study employs an impregnation method to fabricate high-entropy spinel oxide (Mg0.2Fe0.2Co0.2Ni0.2Cu0.2)Fe2O4 (MFCNCF) nanoparticles with varying loadings on a porous Ce0.9Gd0.1O1.95 (GDC) skeleton. The optimized cathode with 30 wt % MFCNCF loading achieves a remarkably low polarization resistance of 0.12 Ω·cm2 and maximum power density of 1063.94 mW·cm–2 at 800 °C. Most significantly, the entropy stabilization effect enables the high-entropy spinel oxide nanoparticles to maintain their microstructure throughout 240 h of operation with negligible performance degradation. The study introduces a novel strategy combining high-entropy design with nanostructure engineering to develop stable and high-performance cathode materials for SOFCs.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"21 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143806428","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

Transfer Printing of Two-Dimensional Molecular Crystals for Low-Voltage, High-Performance, and Degradable Transistors

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-04-09 DOI: 10.1021/acs.nanolett.5c00508

Yujie Xie, Hao Zong, Fan Zhou, Xuebing Luo, Zhanglang Zhou, Juan Peng, Gang Zhou

{"title":"Transfer Printing of Two-Dimensional Molecular Crystals for Low-Voltage, High-Performance, and Degradable Transistors","authors":"Yujie Xie, Hao Zong, Fan Zhou, Xuebing Luo, Zhanglang Zhou, Juan Peng, Gang Zhou","doi":"10.1021/acs.nanolett.5c00508","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00508","url":null,"abstract":"Despite the recent progress in organic field-effect transistors (OFETs) gated by high-capacitance dielectrics, it remains a great challenge to manufacture low-voltage, high-performance, and degradable transistors. Herein, two-dimensional molecular crystals (2DMCs) are exploited to fabricate high-performance OFETs gated by water-soluble methylcellulose with high capacitance. To overcome the dissolution of methylcellulose during the conventional transfer process, 2DMCs of p-type benzothiophene derivative C8-BTBT and n-type furan-thiophene quinoidal compound TFT-CN are transferred onto methylcellulose films by the transfer printing technique. High mobility and steep subthreshold swing (SS) under low-operating voltage are achieved for the methylcellulose-gated 2DMC OFETs. Remarkably, the TFT-CN OFETs can be operated at an ultralow voltage of 1 V with the highest electron mobility of 2.09 cm2/V·s and the lowest SS value of 110 mV/dec. Importantly, the methylcellulose-gated devices can be degraded by a water rinse. Overall, these results present a universal strategy for transfer printing 2DMCs on water-soluble dielectric substrates toward low-voltage, high-performance, and degradable OFETs.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"107 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814019","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

Berry Curvature-Driven Valley Nernst Effect in Monolayer WSe2

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-04-09 DOI: 10.1021/acs.nanolett.5c00194

Jae Won Choi, Won-Yong Lee, Takashi Kikkawa, Min-Sung Kang, Gil-Sung Kim, Jung-Min Cho, No-Won Park, Yun-Ho Kim, Young-Gui Yoon, Chinh Tam Le, Yong Soo Kim, Eiji Saitoh, Sang-Kwon Lee

引用次数: 0

Controllable Reconstruction of β-Bi2O3/Bi2O2CO3 Composite for Highly Efficient and Durable Electrochemical CO2 Conversion

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-04-09 DOI: 10.1021/acs.nanolett.5c00417

Yuxuan Xiao, Di Liu, Jiao Yang, Jinxian Feng, Wenhao Gu, Lulu Qiao, Weng Fai Ip, Hui Pan

{"title":"Controllable Reconstruction of β-Bi2O3/Bi2O2CO3 Composite for Highly Efficient and Durable Electrochemical CO2 Conversion","authors":"Yuxuan Xiao, Di Liu, Jiao Yang, Jinxian Feng, Wenhao Gu, Lulu Qiao, Weng Fai Ip, Hui Pan","doi":"10.1021/acs.nanolett.5c00417","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00417","url":null,"abstract":"The uncontrollable electrochemical reduction reconstruction, leading to the destruction of well-defined structure and subsequent low durability, is the main obstacle to the catalytic performance of Bi-based composites toward electrochemical CO2 reduction reaction (eCO2RR). Herein, we address this issue through construction of a novel β-Bi2O3/Bi2O2CO3 composite, which can resist the reduction reconstruction of Bi-based materials to metallic Bi during the eCO2RR process by modulating a more alkaline microenvironment that facilitates the formation of new Bi–O bonds. The synergistic interactions and directional electron transfer between the β-Bi2O3 and Bi2O2CO3 components, together with the stable composite structure, result in its superior activity and selectivity for formate production with high faradaic efficiencies (FEs) over 94% from −0.7 to −1.1 V, and remarkable durability with maintenance of 80% FE after continuous electrocatalysis of 720 h. This work sheds new light on designing advanced high-performance nanomaterials toward eCO2RR and other practical applications.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"108 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143806429","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