Small Methods最新文献_第10页

Post-Treating Grain Boundaries and Surface Defects by Long-Chain Polymer for Highly Efficient and Stable Perovskite Solar Cells. 利用长链聚合物对晶界和表面缺陷进行后处理，实现高效稳定的 Perovskite 太阳能电池。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-10-12 DOI: 10.1002/smtd.202400948

Yihui Zou, Yi Ding, Haihua Hu, Hao Zhang, Chao Li, Yingyi Cao, Ping Lin, Peng Wang, Lingbo Xu, Can Cui

{"title":"Post-Treating Grain Boundaries and Surface Defects by Long-Chain Polymer for Highly Efficient and Stable Perovskite Solar Cells.","authors":"Yihui Zou, Yi Ding, Haihua Hu, Hao Zhang, Chao Li, Yingyi Cao, Ping Lin, Peng Wang, Lingbo Xu, Can Cui","doi":"10.1002/smtd.202400948","DOIUrl":"https://doi.org/10.1002/smtd.202400948","url":null,"abstract":"Grain boundaries (GBs) and surface defects within perovskite films are inherent challenges that affect the photovoltaic performance of perovskite solar cells (PSCs. In this work, Nylon 11 (N11) is utilized, a long-chain polymer, for post-treating the GBs and surface defects within FAPbI3 films. The multifunctional groups of N11 exhibit unique passivation abilities, enabling self-regulation and selective correction of reverse-charged defects. Post-treating with N11 results in high-quality FAPbI3 films characterized by tight GBs and low surface defect density. Despite fabrication under full open-air conditions, the N11 post-treatment significantly enhances the power conversion efficiency (PCE) value of FAPbI3 PSCs, increasing it from the reference value of 21.89% to 23.54%. Importantly, the long alkyl chain present in N11 significantly enhances the humidity stability of the PSCs. Unencapsulated PSCs treated with N11 maintain 89% of their initial PCE after exposure to air with 30% relative humidity (RH) for 1000 h, demonstrating resilience to elevated humidity levels. This work highlights the substantial improvement in the photovoltaic performance of PSCs achieved through the post-treatment with N11.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2400948"},"PeriodicalIF":10.7,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142454396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Thermodynamics and Kinetics-Directed Regulation of Nucleic Acid-Based Molecular Recognition. 基于核酸的分子识别的热力学和动力学定向调节。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-10-11 DOI: 10.1002/smtd.202401102

Yihao Liu, Zihan Zhao, Yuqi Zeng, Minze He, Yifan Lyu, Quan Yuan

引用次数: 0

Room-Temperature Single-Phase Synthesis of Semiconducting Metal-Covalent Organic Frameworks With Microenvironment-Tuned Photocatalytic Efficiency. 具有微环境调节光催化效率的半导体金属-共价有机框架的室温单相合成。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-10-11 DOI: 10.1002/smtd.202401284

Dongchuang Wu, Qiongshan Zhang, Shiyu Yin, Congying Song, Ning Gu, Dong Wang, Tao Cai, Bin Zhang

{"title":"Room-Temperature Single-Phase Synthesis of Semiconducting Metal-Covalent Organic Frameworks With Microenvironment-Tuned Photocatalytic Efficiency.","authors":"Dongchuang Wu, Qiongshan Zhang, Shiyu Yin, Congying Song, Ning Gu, Dong Wang, Tao Cai, Bin Zhang","doi":"10.1002/smtd.202401284","DOIUrl":"https://doi.org/10.1002/smtd.202401284","url":null,"abstract":"In order to improve the solubility of metallated monomers and product crystallinity, metal-covalent organic frameworks (MCOFs) are commonly prepared via high-temperature sol-vothermal synthesis. However, it hampers the direct extraction of crystallization evolution information. Exploring facile room-temperature strategies for both synthesizing MCOFs and exploiting the crystallinity mechanism is extremely desired. Herein, by a novel single-phase synthetic strategy, three MCOFs with different microstructure is rapidly prepared based on the Schiff base reaction between planarity-tunable C3v monomers and metallated monomers at room temperature. Based on detailed time-dependent experiments and theoretical calculations, it is found that there is a planarity-tuned and competitive growth relationship between disordered structures and crystal nucleus for the first time. The high planarity of monomers boosts the formation of crystal nucleus and rapid growth, suppressing the forming of amorphous structures. In addition, the microenvironment effect on selective photocatalytic coupling of benzylamine (BA) is investigated. The strong donor-acceptor (D-A) MCOF exhibits efficient photocatalytic activity with a high conversion rate of 99% and high selectivity of 99% in 5 h under the 520 nm light irradiation. This work opens a new pathway to scalable and efficient synthesis of highly crystalline MCOFs.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401284"},"PeriodicalIF":10.7,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142454397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Electromagnetic Interference Shielding Films: Structure Design and Prospects. 电磁干扰屏蔽膜：结构设计与前景。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-10-10 DOI: 10.1002/smtd.202401324

Hui Zhao, Jingfeng Wang, Mukun He, Shuai Li, Hua Guo, Dongxiao Kan, Hua Qiu, Lixin Chen, Junwei Gu

{"title":"Electromagnetic Interference Shielding Films: Structure Design and Prospects.","authors":"Hui Zhao, Jingfeng Wang, Mukun He, Shuai Li, Hua Guo, Dongxiao Kan, Hua Qiu, Lixin Chen, Junwei Gu","doi":"10.1002/smtd.202401324","DOIUrl":"https://doi.org/10.1002/smtd.202401324","url":null,"abstract":"The popularity of portable and wearable flexible electronic devices, coupled with the rapid advancements in military field, requires electromagnetic interference (EMI) shielding materials with lightweight, thin, and flexible characteristics, which are incomparable for traditional EMI shielding materials. The film materials can fulfill the above requirements, making them among the most promising EMI shielding materials for next-generation electronic devices. Meticulously controlling structure of composite film materials while optimizing the electromagnetic parameters of the constructed components can effectively dissipate and transform electromagnetic wave energy. Herein, the review systematically outlines high-performance EMI shielding composite films through structural design strategies, including homogeneous structure, layered structure, and porous structure. The attenuation mechanism of EMI shielding materials and the evaluation (Schelkunoff theory and calculation theory) of EMI shielding performance are introduced in detail. Moreover, the effect of structure attributes and electromagnetic properties of composite films on the EMI shielding performance is analyzed, while summarizing design criteria and elucidating the relevant EMI shielding mechanism. Finally, the future challenges and potential application prospects of EMI shielding composite films are prospected. This review provides crucial guidance for the construction of advanced EMI shielding films tailored for highly customized and personalized electronic devices in the future.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401324"},"PeriodicalIF":10.7,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142386814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Solid State Chemistry and Inorganic Synthetic Chemistry - Novel Structures and Accurate Syntheses of Inorganic Materials. 固体化学和无机合成化学--无机材料的新型结构和精确合成。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-10-10 DOI: 10.1002/smtd.202401491

Dan Wang, Jun Chen, Yuliang Li, Shouhua Feng

引用次数: 0

Integrating Metabolic RNA Labeling-Based Time-Resolved Single-Cell RNA Sequencing with Spatial Transcriptomics for Spatiotemporal Transcriptomic Analysis. 将基于代谢 RNA 标记的时间分辨单细胞 RNA 测序与空间转录组学结合起来进行时空转录组学分析

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-10-10 DOI: 10.1002/smtd.202401297

Xiaoyong Chen, Shichao Lin, Honghai You, Jinyuan Chen, Qiaoyi Wu, Kun Yin, Fanghe Lin, Yingkun Zhang, Jia Song, Chenyu Ding, Dezhi Kang, Chaoyong Yang

{"title":"Integrating Metabolic RNA Labeling-Based Time-Resolved Single-Cell RNA Sequencing with Spatial Transcriptomics for Spatiotemporal Transcriptomic Analysis.","authors":"Xiaoyong Chen, Shichao Lin, Honghai You, Jinyuan Chen, Qiaoyi Wu, Kun Yin, Fanghe Lin, Yingkun Zhang, Jia Song, Chenyu Ding, Dezhi Kang, Chaoyong Yang","doi":"10.1002/smtd.202401297","DOIUrl":"https://doi.org/10.1002/smtd.202401297","url":null,"abstract":"Metabolic RNA labeling-based time-resolved single-cell RNA sequencing (scRNA-seq) has provided unprecedented tools to dissect the temporal dynamics and the complex gene regulatory networks of gene expression. However, this technology fails to reveal the spatial organization of cells in tissues, which also regulates the gene expression by intercellular communication. Herein, it is demonstrated that integrating time-resolved scRNA-seq with spatial transcriptomics is a new paradigm for spatiotemporal analysis. Metabolic RNA labeling-based time-resolved Well-TEMP-seq is first applied to profile the transcriptional dynamics of glioblastoma (GBM) cells and discover two potential pathways of EZH2-mediated mesenchymal transition in GBM. With spatial transcriptomics, it is further revealed that the crosstalk between CCL2+ malignant cells and IL10+ tumor-associated macrophages in the tumor microenvironment through an EZH2-FOSL2-CCL2 axis contributes to the mesenchymal transition in GBM. These discoveries show the power of integrative spatiotemporal scRNA-seq to elucidate the complex gene regulatory mechanism and advance the understanding of cellular processes in disease.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401297"},"PeriodicalIF":10.7,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142398888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Correlation of Processing and Structure in an Ethylene-Glycol Side-Chain Modified Polythiophene via Combined X-Ray Scattering and 4D Scanning Transmission Electron Microscopy. 通过 X 射线散射和 4D 扫描透射电子显微镜联合研究乙二醇侧链改性聚噻吩的加工和结构的相关性。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-10-10 DOI: 10.1002/smtd.202400801

Andrew A Herzing, Lucas Q Flagg, Chad R Snyder, Lee J Richter, Jonathan W Onorato, Christine K Luscombe, Ruipeng Li

引用次数: 0

Enhancing the Reaction Kinetics and Stability of Co-Free Li-Rich Cathode Materials via a Multifunctional Strategy. 通过多功能策略提高无共价富锂离子阴极材料的反应动力学和稳定性

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-10-09 DOI: 10.1002/smtd.202401490

Saichao Li, Dewen Hou, Jiantao Li, Yuanyuan Liu, Guiyang Gao, Qixiang Xu, Mengjian Fan, Laisen Wang, Jie Lin, Dong-Liang Peng, Qingshui Xie, Khalil Amine

{"title":"Enhancing the Reaction Kinetics and Stability of Co-Free Li-Rich Cathode Materials via a Multifunctional Strategy.","authors":"Saichao Li, Dewen Hou, Jiantao Li, Yuanyuan Liu, Guiyang Gao, Qixiang Xu, Mengjian Fan, Laisen Wang, Jie Lin, Dong-Liang Peng, Qingshui Xie, Khalil Amine","doi":"10.1002/smtd.202401490","DOIUrl":"https://doi.org/10.1002/smtd.202401490","url":null,"abstract":"Co-free Li-rich layered oxides (CFLLOs) with anionic redox activity are among the most promising cathode materials for high-energy-density and low-cost lithium-ion batteries (LIBs). However, irreversible oxygen release often causes severe structural deterioration, electrolyte decomposition, and the formation of unstable cathode-electrolyte interface (CEI) film with high impedance. Additionally, the elimination of cobalt elements further deteriorates the reaction kinetics, leading to reduced capacity and poor rate performance. Here, a multifunctional strategy is proposed, incorporating Li2MnO3 phase content regulation, micro-nano structure design, and heteroatom substitution. The increased content of Li2MnO3 phase enhances the capacity through oxygen redox. The smaller nanoscale primary particles induce greater tensile strain and introduce more grain boundaries, thereby improving the reaction kinetics and reactivity, while the larger micron-sized secondary particles help to reduce interfacial side reactions. Furthermore, Na⁺ doping modulates the local coordination environment of oxygen, stabilizing both the anion framework and the crystal structure. As a result, the designed cathode exhibits enhanced rate performance, delivering a capacity of 158 mAh g⁻¹ at 5.0 C and improved cyclic stability, with a high capacity retention of 99% after 400 cycles at 1.0 C. This multifunctional strategy holds great promise for advancing the practical application of CFLLOs in next-generation LIBs.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401490"},"PeriodicalIF":10.7,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142386815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

XPS Binding Energy Shifts in 2D Ti₃C₂T_z MXene go largely Beyond Intuitive Explanations: Rationalization from DFT Simulations and Experiments. 二维 Ti3C2Tz MXene 中的 XPS 结合能转变在很大程度上超越了直观解释：DFT 模拟和实验的合理性。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-10-09 DOI: 10.1002/smtd.202400848

Florian Brette, Stéphane Célérier, Christine Canaff, Lola Loupias, Michael Paris, Aurélien Habrioux, Florent Boucher, Vincent Mauchamp

{"title":"XPS Binding Energy Shifts in 2D Ti3C2Tz MXene go largely Beyond Intuitive Explanations: Rationalization from DFT Simulations and Experiments.","authors":"Florian Brette, Stéphane Célérier, Christine Canaff, Lola Loupias, Michael Paris, Aurélien Habrioux, Florent Boucher, Vincent Mauchamp","doi":"10.1002/smtd.202400848","DOIUrl":"https://doi.org/10.1002/smtd.202400848","url":null,"abstract":"MXenes are prototypes of surface tunable 2D materials with vast potential for properties tuning. Accurately characterizing their surface functionalization and its role in electronic structure is crucial, X-ray photoelectron spectroscopy (XPS) being among the go-to methods to do so. Despite extensive use, XPS analysis remains however intricate. Focusing on the benchmark MXene Ti3C2Tz, Density Functional Theory (DFT) calculations of core-level binding energy shifts (BE.s.) are combined with experiments in order to provide a quantitative interpretation of XPS spectra. This approach demonstrates that BE.s. are driven by the complex interplay between chemical, structural, and subtle electronic structure effects preventing analysis from intuitive arguments or comparison with reference materials. In particular, it is shown that O terminations induce the largest BE.s. at Ti 2p levels despite lower electronegativity than F. Additionally, F 1s levels show weak sensitivity to the F local environment, explaining the single contribution in the spectrum, whereas O 1s states are significantly affected by the local surface chemistry. Finally, clear indicators of surface group vacancies are given at Ti 2p and O 1s levels. These results demonstrate the combination of calculations with experiments as a method of the highest value for MXenes XPS spectra analysis, providing guidelines for otherwise complex interpretations.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2400848"},"PeriodicalIF":10.7,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142386820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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-Step PECVD Synthesis of Graphene@Carbon Nanotubes Electrocatalyst. 单步 PECVD 法合成石墨烯@碳纳米管电催化剂。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-10-09 DOI: 10.1002/smtd.202401101

Chaoxu Hao, Mai Li, Jinghui Yang, Xuedong Wang, Yuhang Xia, Changqing Chu, Zhiming Liu, Yan He, Haina Ci

{"title":"Single-Step PECVD Synthesis of Graphene@Carbon Nanotubes Electrocatalyst.","authors":"Chaoxu Hao, Mai Li, Jinghui Yang, Xuedong Wang, Yuhang Xia, Changqing Chu, Zhiming Liu, Yan He, Haina Ci","doi":"10.1002/smtd.202401101","DOIUrl":"https://doi.org/10.1002/smtd.202401101","url":null,"abstract":"Graphene (Gr) and carbon nanotubes (CNTs), the two intriguing carbon nanomaterials, have presented great potential in serving as high-performance electrocatalysts in lithium-sulfur (Li-S) chemistry. The concurrent management of both materials would achieve a promoted synergistic effect. Nevertheless, there still remains a lack of an effective material synthesis route. Herein, a single-step plasma-enhanced chemical vapor deposition (PECVD) strategy is devised to prepare Gr@CNTs heterostructures with strong bonded connections. In the PECVD system, the damaged sidewalls generated in CNT tubes can serve as appropriate nucleation sites for further Gr growth. The formation mechanisms are thoroughly explored in aspects of both experimental characterizations and theoretical calculations. To confirm the validity of this approach, thus-constructed Gr@CNTs architectures are employed as the sulfur host, enabling boosted redox kinetics of polysulfides. This project provides fundamental insight into the mechanism exploration for single-step PECVD growth of Gr@CNTs heterostructure, hence promoting the practical application prospect of carbon nanomaterials toward Li-S systems.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401101"},"PeriodicalIF":10.7,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142386818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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