Small Methods最新文献_第4页

Advancing Topoisomerase Research Using DNA Nanotechnology. 利用 DNA 纳米技术推进拓扑异构酶研究。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-11 DOI: 10.1002/smtd.202401113

Doron Yesodi, Adi Katz, Yossi Weizmann

引用次数: 0

NH₄Cl-Assisted Electrosynthesis of P-Doped Co(OH)₂ Nanosheet on Cu₂S Hollow Nanotube Arrays for Glycerol Electrooxidation. NH4Cl 辅助在 Cu2S 中空纳米管阵列上电合成 P 掺杂 Co(OH)2 纳米片用于甘油电氧化。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-10 DOI: 10.1002/smtd.202401379

Haitao Xu, Hao Zhang, Yan Luo, Jingzhe Zhao, Feng Li

{"title":"NH4Cl-Assisted Electrosynthesis of P-Doped Co(OH)2 Nanosheet on Cu2S Hollow Nanotube Arrays for Glycerol Electrooxidation.","authors":"Haitao Xu, Hao Zhang, Yan Luo, Jingzhe Zhao, Feng Li","doi":"10.1002/smtd.202401379","DOIUrl":"https://doi.org/10.1002/smtd.202401379","url":null,"abstract":"The glycerol oxidation reaction (GOR) for producing high-value-added organic compounds is of great research interest due to its potential in alleviating the energy crisis. Herein, a facile NH4Cl-assisted electrodeposition strategy is reported to fabricate 3D nano-forest array-like hollow nanostructures. The hierarchical heterojunction by combining phosphorus doping Co(OH)2 nanosheets with Cu2S nanotube arrays (P-Co(OH)2@Cu2S NTs/CF) is developed to realize the optimization on GOR. The optimized P-Co(OH)2@Cu2S NTs/CF catalyst exhibits an exceptional activity with a formate Faradaic efficiency (FE) of 97.40% at a potential of 1.30 V (vs RHE). The experimental results indicate that this unique hollow nano-forest structure, grown on a conductive support, can expose more active sites and facilitate electron transfer, thereby demonstrating excellent GOR performance. This work provides new opportunities for the design of electrocatalysts of high-activity and low-cost hollow heterostructure electrocatalysts for glycerol electrooxidation.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401379"},"PeriodicalIF":10.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613224","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

Understanding the Spin of Metal Complexes from a Single-Molecule Perspective. 从单分子角度理解金属复合物的自旋。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-10 DOI: 10.1002/smtd.202401302

Jie Guo, Qinghua Gao, Fei Gao, Chuancheng Jia, Xuefeng Guo

{"title":"Understanding the Spin of Metal Complexes from a Single-Molecule Perspective.","authors":"Jie Guo, Qinghua Gao, Fei Gao, Chuancheng Jia, Xuefeng Guo","doi":"10.1002/smtd.202401302","DOIUrl":"https://doi.org/10.1002/smtd.202401302","url":null,"abstract":"Compared with aggregate spin behavior, single-molecule spin behavior can be accurately understood, controlled, and applied at the level of basic building blocks. The potential of single-molecule electronic and nuclear spins for monitoring and control represents a beacon of promise for the advancement of molecular spin devices, which are fabricated by connecting a single molecule between two electrodes. Metal complexes, celebrated for their superior magnetic attributes, are widely used in the devices to explore spin effects. Moreover, single-molecule electrical techniques with high signal-to-noise ratio, temporal resolution, and reliability help to understand the spin characteristics. In this review, the focus is on the devices with metal complexes, especially single-molecule magnets, and systematically present experimental and theoretical state of the art of this field at the single-molecule level, including the fundamental concepts of the electronic and nuclear spin and their basic spin effects. Then, several experimental methods developed to regulate the spin characteristics of metal complexes at single-molecule level are introduced, as well as the corresponding intrinsic mechanisms. A brief discussion is provided on the comprehensive applications and the considerable challenges of single-molecule spin devices in detail, along with a prospect on the potential future directions of this field.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401302"},"PeriodicalIF":10.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613243","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

A Versatile Method for Preparation of BrCOFs Aerogels and Efficient Functionalization via Suzuki-Miyaura Reaction. 制备 BrCOFs 气凝胶并通过 Suzukii-Miyaura 反应进行高效官能化的多功能方法。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-10 DOI: 10.1002/smtd.202401373

Qiaomu Wang, Peng Wang, Yandong Wang, Yang Xu, Haocheng Xu, Kai Xi

{"title":"A Versatile Method for Preparation of BrCOFs Aerogels and Efficient Functionalization via Suzuki-Miyaura Reaction.","authors":"Qiaomu Wang, Peng Wang, Yandong Wang, Yang Xu, Haocheng Xu, Kai Xi","doi":"10.1002/smtd.202401373","DOIUrl":"https://doi.org/10.1002/smtd.202401373","url":null,"abstract":"Covalent organic frameworks (COFs) aerogels solve the restrictions on processability and application caused by the insolubility and non-fusibility of powders while avoiding the inaccessibility of pore structures by dense stacking. At the current start-up stage where COFs aerogels are scarce and difficult to synthesize, design of generalized synthetic methods play an indispensable role in guiding and developing COFs aerogels. Moreover, evolving the functionality of COF aerogels is equal vital, which achieves higher performance and broader practical applications. In this work, for the first time, processable BrCOFs aerogels have been synthesized without vacuum by seven kind polar solvents, which realizes general preparation of BrCOFs aerogels. It is extremely friendly to the inapplicability for some scenarios. Furthermore, by Suzuki-Miyaura cross-coupling reaction, BrCOFs aerogels are endows with cyano groups (-CN), trifluoromethyl (-CF3) and methyl sulfonyl (-SO2-CH3) efficiently. As a proof-of-concept, BrCOFs-SO2-CH3 aerogels served as a quasi-solid electrolyte for lithium-metal batteries (LMBs), which effectively enhance the performance of batteries.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401373"},"PeriodicalIF":10.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613128","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

Bayesian Learning Aided Theoretical Optimization of IrPdPtRhRu High Entropy Alloy Catalysts for the Hydrogen Evolution Reaction. 用于氢气进化反应的 IrPdPtRhRu 高熵合金催化剂的贝叶斯学习辅助理论优化。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-10 DOI: 10.1002/smtd.202401224

Linke Huang, Zachary Gariepy, Ethan Halpren, Li Du, Chung Hsuan Shan, Chuncheng Yang, Zhi Wen Chen, Chandra Veer Singh

{"title":"Bayesian Learning Aided Theoretical Optimization of IrPdPtRhRu High Entropy Alloy Catalysts for the Hydrogen Evolution Reaction.","authors":"Linke Huang, Zachary Gariepy, Ethan Halpren, Li Du, Chung Hsuan Shan, Chuncheng Yang, Zhi Wen Chen, Chandra Veer Singh","doi":"10.1002/smtd.202401224","DOIUrl":"https://doi.org/10.1002/smtd.202401224","url":null,"abstract":"The complex compositional space of high entropy alloys (HEAs) has shown a great potential to reduce the cost and further increase the catalytic activity for hydrogen evolution reaction (HER) by compositional optimization. Without uncovering the specifics of the HER mechanism on a given HEA surface, it is unfeasible to apply compositional modifications to enhance the performance and save costs. In this work, a combination of density functional theory and Bayesian machine learning is used to demonstrate the unique catalytic mechanism of IrPdPtRhRu HEA catalysts for HER. At high coverage of underpotential-deposited hydrogen, a d-band investigation of the active sites of the HEA surface is conducted to elucidate the superior catalytic performance through electronic interactions between elements. At low coverage, a novel Bayesian learning with oversampling approach is then outlined to optimize the HEA composition for performance improvement and cost reduction. This approach proves more efficacious and efficient and yields higher-quality structures with less training set bias compared with neural-network optimization. The proposed HEA optimization theoretically outperforms benchmark Pt catalysts' overpotential by ≈40% at a 15% reduced synthesis cost comparing to the equiatomic ratio HEA.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401224"},"PeriodicalIF":10.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613202","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

FeOOH Quantum Dots Assembled MXene-Decorated 3D Photothermal Evaporator for Synergy Application in Solar Evaporation and Fenton Degradation. 铁氧体量子点组装的 MXene 装饰三维光热蒸发器在太阳能蒸发和芬顿降解中的协同应用。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-10 DOI: 10.1002/smtd.202401541

Yifan Liu, Deke Li, Guangyi Tian, Chenggong Xu, Xionggang Chen, Jinxia Huang, Zhiguang Guo

{"title":"FeOOH Quantum Dots Assembled MXene-Decorated 3D Photothermal Evaporator for Synergy Application in Solar Evaporation and Fenton Degradation.","authors":"Yifan Liu, Deke Li, Guangyi Tian, Chenggong Xu, Xionggang Chen, Jinxia Huang, Zhiguang Guo","doi":"10.1002/smtd.202401541","DOIUrl":"https://doi.org/10.1002/smtd.202401541","url":null,"abstract":"Solar-driven water evaporation is considered as the sustainable approach to alleviate freshwater resource crisis through direct use of solar energy. However, it is still challenging to achieve the multifunctional solar evaporators equipped with both high evaporation and purification performance to handle practical complex wastewater. Here, a simple and cost-effective multifunctional 3D solar evaporator is prepared by alternately decorating the commercial sponge with FeOOH quantum dots (FQDs) supported MXene sheets composites and chitosan hydrogel coatings for enabling the solar water evaporation and organic wastewater photodegradation simultaneously. MXene composites allow the solar evaporator with excellent photothermal conversion performance, the hydrophilic chitosan hydrogel coated interconnecting skeleton structures of sponge serve as the mass transfer and water transport channels. The Fenton-catalytic FQDs anchored on the MXene sheets surface accept the photo-generated electrons of MXene sheets to induce the organic pollutant photo-Fenton degradation reaction under sunlight irradiation. The resulting evaporator possesses both excellent water evaporation rate of 2.54 kg m-2 h-1 and high degradation efficiency (99.24% for methylene blue), coupled with durable salt-resisting performance during long-term seawater desalination (20 wt.% NaCl). This work provides a simple and feasible strategy for designing multifunctional solar evaporators to meet the potential application scenarios in practice.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401541"},"PeriodicalIF":10.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613220","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

TVT-Based New Building Block with Enhanced π-Electron Delocalization for Efficient Non-Fused Photovoltaic Acceptor. 基于 TVT 的新构件，具有增强的 π 电子脱焦功能，可实现高效的非熔融光伏受体。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-09 DOI: 10.1002/smtd.202401511

Junzhen Ren, Shaoqing Zhang, Huixue Li, Jianqiu Wang, Lijiao Ma, Zhihao Chen, Tao Wang, Tao Zhang, Jianhui Hou

{"title":"TVT-Based New Building Block with Enhanced π-Electron Delocalization for Efficient Non-Fused Photovoltaic Acceptor.","authors":"Junzhen Ren, Shaoqing Zhang, Huixue Li, Jianqiu Wang, Lijiao Ma, Zhihao Chen, Tao Wang, Tao Zhang, Jianhui Hou","doi":"10.1002/smtd.202401511","DOIUrl":"https://doi.org/10.1002/smtd.202401511","url":null,"abstract":"To address the high-cost issue that impedes the large-scale fabrication and industrialization of organic solar cells (OSCs), it is crucial to design low-cost photovoltaic materials with simplified synthesis procedures. In this study, a novel fully non-fused acceptor, ATVT-BO, featuring a triisopropylbenzene-substituted (E)-1,2-di(thiophen-2-yl)ethene (TVT) unit as the central core is designed and synthesized. A control acceptor, A4T-BO, with the same alkyl chains but a bithiophene central core, is also synthesized for comparison. Theoretical calculations and practical measurements reveal that compared to A4T-BO, the insertion of an ethylene bond in ATVT-BO enhances the molecular planarity and reduces the aromaticity, leading to enhanced π-electron delocalization and thus improved electron mobility and a red-shifted optical absorption spectrum. The 3D molecular packing mode of ATVT-BO, characterized by tight intermolecular interactions, also promotes efficient charge transport in OSCs. Consequently, when paired with the low-cost polymer PTVT-T, featuring an ester-substituted TVT structure, as the photoactive layer, the PTVT-T:ATVT-BO-based device achieves a remarkable power conversion efficiency of 14.8%, distinctly higher than that of PTVT-T:A4T-BO-based cell. The result highlights the significant potential of TVT units in creating both low-cost polymer donors and fully non-fused acceptors, which opens up new possibilities for designing low-cost photoactive materials in OSCs.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401511"},"PeriodicalIF":10.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613167","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

Twinned Metal-Organic Framework Nanoplates for Hydrocarbon Separation Membranes. 用于碳氢化合物分离膜的双层金属有机框架纳米板。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-09 DOI: 10.1002/smtd.202401248

Jongbum Kim, Minsu Kim, Seungho Yu, Jihee Yu, Chanjong Yu, Taehwan Kim, Nahyeon Lee, Yun Ho Ahn, Yun Ho Kim, Sungmi Yoo, Ki Chul Kim, Dae Woo Kim, Kiwon Eum

引用次数: 0

Advances in Lanthanide-Based NIR-IIb Probes for In Vivo Biomedical Imaging. 用于体内生物医学成像的镧系元素近红外-IIb 探针的研究进展。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-09 DOI: 10.1002/smtd.202401462

Jiaxin Wu, Zi-Han Chen, Yang Xie, Yong Fan

{"title":"Advances in Lanthanide-Based NIR-IIb Probes for In Vivo Biomedical Imaging.","authors":"Jiaxin Wu, Zi-Han Chen, Yang Xie, Yong Fan","doi":"10.1002/smtd.202401462","DOIUrl":"https://doi.org/10.1002/smtd.202401462","url":null,"abstract":"The past decades have witnessed the significant development and practical interest of in vivo biomedical imaging technologies and optical materials in the second-near infrared (NIR-II, 1000-1700 nm) window. Imaging with the extended emission wavelength toward the long-wavelength end (NIR-IIb, 1500-1700 nm) further offers micrometer imaging resolution and centimeter tissue penetration depth by taking advantage of the much-reduced photon scattering and near-zero tissue autofluorescence background, which have become a very hot research area. This review focuses on the recent advances in the development of lanthanide-based NIR-IIb probes for in vivo biomedical applications. The progress including ratiometric imaging, multiplexed imaging for wide-field and microscopy, lifetime multiplexing and sensing, persistent luminescence, and multimodal imaging is summarized. Challenges and future directions concerning the investigation of the photophysical and photochemical properties of NIR-IIb probes, the selection of near-infrared cameras as well as the potential extension of the NIR-IIb imaging sub-window are pointed out. This review will inspire readers who have a strong interest in developing optical imaging technology and long-wavelength fluorescence probes for high-contrast in vivo biomedical applications.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401462"},"PeriodicalIF":10.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613131","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

Modular Micromotor Fabrication with Self-Focusing Lithography. 利用自聚焦光刻技术制造模块化微电机。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-11-07 DOI: 10.1002/smtd.202401388

Qingxin Guo, Binglin Zeng, Yingnan Cao, Xiaofeng Li, Jingyuan Chen, Wei Wang, Jinyao Tang

{"title":"Modular Micromotor Fabrication with Self-Focusing Lithography.","authors":"Qingxin Guo, Binglin Zeng, Yingnan Cao, Xiaofeng Li, Jingyuan Chen, Wei Wang, Jinyao Tang","doi":"10.1002/smtd.202401388","DOIUrl":"https://doi.org/10.1002/smtd.202401388","url":null,"abstract":"Synthetic Janus micro/nanomotors can efficiently convert ambient energy into asymmetrical self-propulsive force, overcoming random thermal fluctuations and enabling autonomous migration. Further modifications to the motors can equip them with different functional modules to meet different needs. However, developing a versatile and high-yield fabrication method for multifunctional Janus micromotors remains challenging. In this study, a modular fabrication approach for micromotors with a particle-tip structure based on the self-focusing lithography induced by an array of TiO2 microspheres is presented. By adjusting the tip composition or loading, precise programming of motor functionality is achieved, allowing for various capabilities such as photoredox reaction-induced propulsion, fluorescent imaging, electric and magnetic navigation. Furthermore, the flexibility of this fabrication method by selectively loading materials onto two tips is demonstrated to achieve multifunctionality within a micromotor unit. This study proposes a straightforward and versatile approach for modular functional micromotors.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401388"},"PeriodicalIF":10.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142602137","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