Nano LettersPub Date : 2025-02-12DOI: 10.1021/acs.nanolett.4c06632
Xi Wang, Xiangqian Lu, Renjie Hu, Wei Qin
{"title":"Chiral Blue TADF Materials Enhance the Spin Transitions to Improve Emission Quantum Yield","authors":"Xi Wang, Xiangqian Lu, Renjie Hu, Wei Qin","doi":"10.1021/acs.nanolett.4c06632","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c06632","url":null,"abstract":"Circularly polarized thermally activated delayed fluorescence materials not only possess high exciton utilization efficiency but also have the capability to emit circularly polarized light for potential information storage and sensing. In this work, chiral blue TADF enantiomers are prepared. The energy difference between singlet and triplet, Δ<i>E</i><sub>ST</sub>, increases with the strength of chirality. The chiral orbit-induced spin degeneracy elimination could enhance spin relaxation, where spin could flip easily to lead to an effective transition from triplet to singlet states. This induces a pronounced enhancement in fluorescence quantum yield. Furthermore, circularly polarized emission of chiral TADF materials under different external magnetic fields are studied. Magnetic field control of <i>g</i><sub>lum</sub> presents a mirror symmetry effect for chiral TADF enantiomers, which provides evidence for the transition between the photon spin and electron spin.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"63 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393892","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 : 2025-02-12Epub Date: 2025-01-31DOI: 10.1021/acs.nanolett.4c04325
Tao Liu, Yuan Zhong, Xiangyu Gao, Jun Jiang, Lingyi Jiang, Boying He, Yichen Liu, Zhiyi Ling, Hao Xu, Hongmin Guo, Jialiang Zhu, Bingqing Xu, Gen Zhang
{"title":"Enhancing the Interfacial Stability of Thin Solid Polymer Electrolyte with Fluorinated Covalent Organic Framework Nanosheets.","authors":"Tao Liu, Yuan Zhong, Xiangyu Gao, Jun Jiang, Lingyi Jiang, Boying He, Yichen Liu, Zhiyi Ling, Hao Xu, Hongmin Guo, Jialiang Zhu, Bingqing Xu, Gen Zhang","doi":"10.1021/acs.nanolett.4c04325","DOIUrl":"10.1021/acs.nanolett.4c04325","url":null,"abstract":"<p><p>Thin poly(ethylene oxide) (PEO)-based electrolytes with higher energy density face challenges such as low ionic conductivity, deterioration of lithium dendrites, and severe side reactions. To address these issues, a surface modification strategy was developed to enhance the electrode-electrolyte interfacial stability by introducing fluorinated covalent organic framework nanosheets (CONs) to construct a thin PEO-based electrolyte with a mere 14 μm thickness. Characterization and DFT calculation indicated that the CON layer promotes concentration enrichment and averaging of free Li<sup>+</sup> and mitigates side reactions at the interface. The electrode/electrolyte interface stability is significantly improved compared to the unmodified group (Li symmetric cells stabilized for more than 1000 h, and the full cell of LiFePO<sub>4</sub>∥Li exhibited a satisfactory capacity retention of 97.3% at 0.5 C after 150 cycles at 60 °C. This interface modification strategy provides a valuable reference for applying thin polymer electrolytes in high-energy solid-state lithium metal batteries.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":" ","pages":"2103-2111"},"PeriodicalIF":9.6,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143070759","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":"Targeted Management of Diabetic Osteoporosis by Biocatalytic Cascade Reaction Nanoplatform","authors":"Lian-Hua Fu, Mengting Yin, Xin Chen, Chen Yang, Jing Lin, Xiansong Wang, Baoguo Jiang, Peng Huang","doi":"10.1021/acs.nanolett.4c05221","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05221","url":null,"abstract":"Diabetic osteoporosis (DOP) is a chronic complication of diabetes mellitus (DM) that impairs bone health, and effective management of DOP remains a formidable challenge. In this study, we developed a biocatalytic cascade nanoplatform, GOx@SrCaP-CAT-Tet, offering osteogenic, angiogenic, and anti-inflammatory activities for targeted DOP management. The platform includes glucose oxidase (GOx) and catalase (CAT), encapsulated in strontium-doped calcium phosphate (SrCaP), converting glucose into gluconic acid and hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>), alleviating the hyperglycemia and promoting hypoxia-induced vascularization. Both the generated H<sub>2</sub>O<sub>2</sub> and any overabundance of H<sub>2</sub>O<sub>2</sub> in the DOP microenvironment can be scavenged by CAT, thus relieving inflammation. Via a surface modified with tetracycline (Tet) for bone targeting, the release of Sr<sup>2+</sup>, Ca<sup>2+</sup>, and PO<sub>4</sub><sup>3–</sup> can stimulate osteogenesis and suppress osteoclastogenesis, thereby hastening bone formation and reversing osteoporosis. This nanoplatform shows promise in managing DOP both <i>in vitro</i> and <i>in vivo</i>. Our findings open a new horizon for managing DOP through biocatalytic cascade reactions.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"21 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385282","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 : 2025-02-11DOI: 10.1021/acs.nanolett.4c04945
Nikolas Antonatos, Artur P. Herman, Beatriz de Simoni, Karolina Ciesiołkiewicz, Eduard Belas, Marián Betušiak, Roman Grill, Kalyan Jyoti Sarkar, Amutha Subramani, David Sedmidubský, Valentino Jadriško, Alessandro Baserga, Micol Bertolotti, Stefano Dal Conte, Christoph Gadermaier, Giulio Cerullo, Antonella Treglia, Annamaria Petrozza, Robert Kudrawiec, Zdeněk Sofer
{"title":"Unraveling the Nanosecond Photoresponse of Layered HgPSe3","authors":"Nikolas Antonatos, Artur P. Herman, Beatriz de Simoni, Karolina Ciesiołkiewicz, Eduard Belas, Marián Betušiak, Roman Grill, Kalyan Jyoti Sarkar, Amutha Subramani, David Sedmidubský, Valentino Jadriško, Alessandro Baserga, Micol Bertolotti, Stefano Dal Conte, Christoph Gadermaier, Giulio Cerullo, Antonella Treglia, Annamaria Petrozza, Robert Kudrawiec, Zdeněk Sofer","doi":"10.1021/acs.nanolett.4c04945","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c04945","url":null,"abstract":"Chalcogen phosphates of transition metals make up a well-known group of antiferromagnetic semiconductors with the general formula MPX<sub>3</sub>, where M represents a transition metal and X is a chalcogen, either sulfur or selenium. Most of these compounds adopt a similar structure; however, mercury phosphochalcogenides present an exception with their unique van der Waals layered structure. Transition metal chalcogenides are highly appealing materials for photodetectors due to their exceptional optoelectronic properties. Among them, HgPSe<sub>3</sub>, a layered van der Waals phosphoselenide, shows promise for photodetection over a broad spectral range, from visible light to X-rays. Despite this, the electronic processes governing its photoresponse remain unclear. In this study, we demonstrate a nanosecond response time of a HgPSe<sub>3</sub>-based photodetector to visible light and gain deeper insights into the underlying charge carrier dynamics through a comprehensive investigation using complementary time-resolved experimental techniques. Our findings on the role of carrier traps provide a potential pathway for optimizing optoelectronic device performance.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"63 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385281","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 : 2025-02-11DOI: 10.1021/acs.nanolett.4c05972
Seongjoo Jung, Turan Birol
{"title":"Octahedral-Rotation-Induced, Antiferroelectric-like Double Hysteresis in Strained Perovskites","authors":"Seongjoo Jung, Turan Birol","doi":"10.1021/acs.nanolett.4c05972","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05972","url":null,"abstract":"Antiferroelectrics, which host both polar and antipolar order parameters, are characterized by the double hysteresis loops which are advantageous for various applications such as high-density energy storage. In this study, we investigate the coupling between oxygen octahedral rotations and polarization in well-known perovskites, with a focus on SrTiO<sub>3</sub>. Using first-principles calculations and symmetry-adapted Landau–Ginzburg–Devonshire theory, we construct an energy landscape to analyze how this coupling shapes polarization–voltage hysteresis behavior. We show that tuning the relative strength of polar and rotational instabilities by exploiting epitaxial strain and layering leads to nontrivial hysteresis behavior. Consequently, the rotation coupling with polarization leads to an expanded search space of materials exhibiting antiferroelectric-like double hysteresis.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"32 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385284","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 : 2025-02-11DOI: 10.1021/acs.nanolett.4c05838
Menghao Li, Xuming Yang, Xianbin Wei, Yuanmin Zhu, Xueliang Sun, M. Danny Gu
{"title":"Cathode–Electrolyte Interphase of Ni-Rich Layered Oxides: Evolving Structure and Implication on Stability","authors":"Menghao Li, Xuming Yang, Xianbin Wei, Yuanmin Zhu, Xueliang Sun, M. Danny Gu","doi":"10.1021/acs.nanolett.4c05838","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05838","url":null,"abstract":"The cathode–electrolyte interphase (CEI) is recognized as a crucial component in battery systems; however, knowledge regarding its structure and function remains limited and often controversial. This study demonstrates the feasibility of revealing atomic-resolution CEI structures via cryogenic transmission electron microscopy (cryo-TEM). Using Ni-rich oxide (LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub>, NCM811) microparticles as the model cathode, ultrafine images of CEI were obtained, revealing its dynamic evolution over cycling and its impact on battery performance. In ethylene carbonate (EC)-based electrolytes, the CEI forms an amorphous organic-rich layer, while, in fluoroethylene carbonate (FEC)-based electrolytes, the CEI contains abundant LiF grains. Both CEIs thicken with cycling but exhibit different structural evolutions: the former adopts a mosaic structure, while the latter forms a dual-layer structure with a compact LiF inner layer. These unprecedented high-resolution images and comprehensive analysis advance the understanding of CEI dynamics, addressing existing controversies and providing insights for improving battery performance.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"17 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385283","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 : 2025-02-11DOI: 10.1021/acs.nanolett.4c04541
Chun Ma, Mengsi Yang, Wei Zhou, Songxin Guo, Hui Zhang, Jun Gong, Xian-En Zhang, Feng Li
{"title":"The RNA Landscape of In Vivo-Assembled MS2 Virus-Like Particles as mRNA Carriers Reveals RNA Contamination from Host Viruses","authors":"Chun Ma, Mengsi Yang, Wei Zhou, Songxin Guo, Hui Zhang, Jun Gong, Xian-En Zhang, Feng Li","doi":"10.1021/acs.nanolett.4c04541","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c04541","url":null,"abstract":"Virus-like particles (VLPs) are attractive systems for packaging and delivering therapeutic RNA molecules in vaccine development, protein replacement therapy, and gene editing. Different VLPs carrying target functional RNA have been biosynthesized and demonstrated for biomedical purposes. However, little attention has been paid to what other types of RNA, besides the target RNA, are encapsulated into VLPs, leading to a lack of knowledge of the landscape of RNA cargoes. In this work, we engineered the widely used MS2 VLPs to encapsulate a model cargo mRNA in yeast, with the packaging efficiency and specificity being quantitatively tuned by the copy number of packaging signals. Transcriptome sequencing of the RNA in the VLPs revealed RNA contamination from the hosts and host viruses. This study highlights the necessity of precise VLP and cargo design and a clear background of production hosts to ensure specificity and safety.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"12 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385280","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":"Single-Molecule Amplification-Free Detection of Nucleic Acid Biomarkers from Body Fluids via an Optical Microfiber with a Nanointerface","authors":"Pengwei Chen, Xinyu Zhang, Xundi Zhan, Yunyun Huang, Haotian Wu, Chenghao Zhao, Anding Xu, Bai-Ou Guan","doi":"10.1021/acs.nanolett.4c06490","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c06490","url":null,"abstract":"Single-molecule detection of nucleic acids in body fluids is vital but challenging. This work presents an optical microfiber biosensor with a metal–semiconductor–2D material hybrid nanointerface for single-molecule amplification-free detection of nucleic acids in complex body fluids. By optimizing the nanointerface components, we achieved significant enhancement of the evanescent field, enabling ultrahigh sensitivity at the microfiber surface. It allowed for the detection of DNA molecules at the single-molecule level and could identify single-base-pair mismatches. Utilizing a microscale diameter and millimeter-length design, the biosensor overcomes the limitations associated with nanosensors, providing a practical solution for point-of-care diagnostics. The sensor demonstrated its potential through ultrasensitive detection of HIV nucleic acids in body fluids such as serum, sweat, and saliva. This advancement marks a critical step forward in nucleic acid detection, facilitating early disease diagnosis, personalized medicine, and fundamental biological research, despite challenges posed by the nanosize, chain-like morphology, and environmental interference of nucleic acids.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"55 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385285","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":"A Self-Powered Organic Vision Sensor Array for Photopic Adaptation","authors":"Yannan Dai, Shenglan Hao, Guangdi Feng, Wei Li, Jianquan Liu, Qiuxiang Zhu, Hui Peng, Bobo Tian, Junhao Chu, Chungang Duan","doi":"10.1021/acs.nanolett.4c06090","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c06090","url":null,"abstract":"With the rapid development of artificial intelligence, it is essential to develop a bionic vision sensor that boasts low power consumption, self-adaptability, and broadband sensing for efficient image preprocessing. We employed an organic p-type semiconductor, poly(3-hexylthiophene-2,5-diyl) (P3HT), in conjunction with an Al electrode to engineer a Schottky junction. This design leverages the photogating effect due to the charge trapping by defects at the P3HT/Al interface, endowing this self-powered, two-terminal device with photopic adaptability. The 1.9 eV bandgap of P3HT enables substantial light absorption within the visible spectrum, yielding a significant photocurrent. By assembling 50 photoelectric sensors into a 10 × 5 array, we successfully demonstrated an image formation process that emulates photopic adaptation, specifically in recognizing letters. This easily fabricated, self-powered retinomorphic photoelectric device has great potential to mimic retinal structures, thereby heralding a new frontier in visual sensory devices.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"79 5 Pt 1 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143375633","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":"Iterative Design of a Prodrug Nanocarrier for Cell Cycle Arrest, Immune Modulation, and Enhanced T Cell Infiltration for Colon Cancer Therapy","authors":"Zhenhan Feng, Mengmeng Qin, Jinhong Jiang, Meng Wang, Tianyu Zhang, Yibo Li, Xiangsheng Liu, Jinfang Zhang, Hubing Shi, Yuliang Zhao, Huan Meng","doi":"10.1021/acs.nanolett.4c06018","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c06018","url":null,"abstract":"Recent advancements in cancer therapy have highlighted the dual role of cyclin-dependent kinase 4/6 inhibitors (CDK4/6i) in both cell cycle regulation and immune activation. However, applying CDK4/6i to immunologically unfavorable tumors is challenging due to the complex tumor microenvironment (TME), characterized by inadequate T cell recruitment and exclusion mechanisms that hinder an effective antitumor immunity. In this work, we iteratively designed prodrug liposomal nanocarriers that integrate multiple functions: cell cycle inhibition through encapsulation of CDK4/6i, immune activation via concurrent delivery of an oral gavage-inducing chemotherapy agent, and overcoming T cell exclusion through the incorporation of a cholesterol prodrug. This iterative nanocarrier design effectively improves the pharmacokinetic profile of CDK4/6i, overcomes the immunosuppressive TME, achieves superior antitumor efficacy, and synergizes with immune checkpoint inhibitors to provide lasting effects in various colon cancer animal models.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"13 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385288","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}