Small Methods最新文献_第2页

Programmable DNA Reactions for Advanced Fluorescence Microscopy in Bioimaging.

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-12-16 DOI: 10.1002/smtd.202401279

Fan Hong

引用次数: 0

2D Carbon-Anchored Platinum-Based Nanodot Arrays as Efficient Catalysts for Methanol Oxidation Reaction.

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-12-16 DOI: 10.1002/smtd.202401717

Zhen Xu, Xing Hu, Xiaojie Jiang, Shan Zhu, Kaixiang Lei, Yecan Pi, Kezhu Jiang, Shijian Zheng

{"title":"2D Carbon-Anchored Platinum-Based Nanodot Arrays as Efficient Catalysts for Methanol Oxidation Reaction.","authors":"Zhen Xu, Xing Hu, Xiaojie Jiang, Shan Zhu, Kaixiang Lei, Yecan Pi, Kezhu Jiang, Shijian Zheng","doi":"10.1002/smtd.202401717","DOIUrl":"https://doi.org/10.1002/smtd.202401717","url":null,"abstract":"Ultrafine Pt-based alloy nanoparticles supported on carbon substrates have attracted significant attention due to their catalytic potential. Nevertheless, ensuring the stability of these nanoparticles remains a critical challenge, impeding their broad application. In this work, novel nanodot arrays (NAs) are introduced where superfine alloy nanoparticles are uniformly implanted in a 2D carbon substrate and securely anchored. Electrochemical testing of the PtCo NAs demonstrates exceptional methanol oxidation reaction (MOR) activity, achieving 1.25 A mg-1. Moreover, the PtCo NAs exhibit outstanding stability throughout the testing period, underscoring the effectiveness of the anchoring mechanism. Comprehensive characterization and theoretical calculations reveal that the 2D carbon-anchored structure optimizes the electronic structure and coordination environment of Pt, restricts nanoparticle migration, and suppresses transition metal dissolution. This strategy represents a major advancement in addressing the stability limitations of ultrafine nanoparticles in catalytic applications and offers broader insights into the design of next-generation catalysts with enhanced durability and performance.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401717"},"PeriodicalIF":10.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826882","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

Selective Photocatalytic C─H Oxidation Using All-Inorganic Perovskite Quantum Dots Encapsulated in UiO-Series MOFs.

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-12-16 DOI: 10.1002/smtd.202401910

Xiyu Liu, Sai Huang, Rebecca Shu Hui Khoo, Lu Huang, Wenqing Zhu, Linjun Wang

引用次数: 0

Tailoring the Interfacial Composition of Heterostructure InP Quantum Dots for Efficient Electroluminescent Devices.

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-12-15 DOI: 10.1002/smtd.202401560

Seungki Shin, Yunseo Lee, Jeon Kim, Jina Na, Namyoung Gwak, Seongchan Kim, Jaeyoung Seo, Chong Seung Yoon, Nuri Oh

{"title":"Tailoring the Interfacial Composition of Heterostructure InP Quantum Dots for Efficient Electroluminescent Devices.","authors":"Seungki Shin, Yunseo Lee, Jeon Kim, Jina Na, Namyoung Gwak, Seongchan Kim, Jaeyoung Seo, Chong Seung Yoon, Nuri Oh","doi":"10.1002/smtd.202401560","DOIUrl":"https://doi.org/10.1002/smtd.202401560","url":null,"abstract":"The formation of core-shell quantum dots (QDs) with type-I band alignment results in surface passivation, ensuring the efficient confinement of excitons for light-emitting applications. In such cases, the atomic composition at the core-shell heterojunction significantly affects the optical, and electrical properties of the QDs. However, for InP cores, shell materials are limited to compositions consisting of II-VI group elements. The restricted selection of shell materials leads to an interfacial misfit, resulting in a charge imbalance at the core-shell heterojunction. In this study, the effect of interfacial stoichiometry is investigated on the optical, and electrical properties of InP core-shell QDs. Direct Se injection strategy is employed during the synthesis of the InP core to regulate the interfacial chemical composition, resulting in the formation of an InZnSe alloy on the core surface. This InZnSe layer reduces the misfit between the InP core, and ZnSe shell, leading to a remarkable photoluminescence quantum yield of 95% with a narrow emission bandwidth of 34 nm. The InZnSe interlayer significantly influences the electroluminescence (EL) processes, increasing the charge injection efficiency, and mitigating charge imbalance. A green-emitting EL device is demonstrated with a maximum luminance of 26370 cd m-2, and a peak current efficiency of 31.5 cd A-1.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401560"},"PeriodicalIF":10.7,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826828","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

The Relationship between In Vivo Toxicity and Responsive pH in Transistor-Like pH-Sensitive Nanodetergents.

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-12-15 DOI: 10.1002/smtd.202401263

Weinan Zhang, Xiaochuan Wang, Jihong Wang, Chanjuan Su, Yan Bao, Menghua Xiong

{"title":"The Relationship between In Vivo Toxicity and Responsive pH in Transistor-Like pH-Sensitive Nanodetergents.","authors":"Weinan Zhang, Xiaochuan Wang, Jihong Wang, Chanjuan Su, Yan Bao, Menghua Xiong","doi":"10.1002/smtd.202401263","DOIUrl":"https://doi.org/10.1002/smtd.202401263","url":null,"abstract":"Subacidity-responsive materials (saRMs) have attracted considerable attention for disease-specific pH-responsive imaging and therapy. However, the guidance for their pH-responsive design, aimed at achieving effective responses at lesion sites while minimizing unwanted responses in normal tissues, is inadequate and challenged by the subtle pH difference between the desired responsive pH and the pH of normal tissues. Here, the correlation between the responsive pH of 'proton transistor' nanodetergents (pTNTs) is investigated and the in vivo toxicity caused by unwanted responses in normal tissues, taking advantage of their refined responsive pH and the easily characterized membranolytic activity and cytotoxicity following response. It is designed and selected five pTNTs that undergo a refined transition from an inactive \"OFF\" state with sealed membranolytic activity and cytotoxicity to an active \"ON\" state with potent membranolytic activity and cytotoxicity within a 0.1 pH perturbation at transition pH (pHt) values of 7.2, 7.1, 6.9, 6.8, and 6.7, respectively. A significant correlation between the in vivo toxicity of these pTNTs and their pHt for membranolytic activity is observed. And non-negligible changes in the organ toxicity of pTNTs are induced by every 0.1 or 0.2 pH shift of pHt. After intravenous administration, pTNTs with a pHt value of 7.2 or 7.1 induced significant hepatotoxicity and cardiotoxicity, while no significant toxicity is detected for pTNTs with pHt values ranging from 6.8 to 6.7. This hepatoxicity is found to be associated with the tissue's pH environment-dependent activation of membranolytic activity. This study can provide guidance for designing pH-responsive membranolytic materials and saRMs to minimize their toxicity and unwanted response in normal tissues.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401263"},"PeriodicalIF":10.7,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826911","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

Redox State-Driven Synthesis of Mesoporous and Microsphere Poly(phenylenediamine) for Transition Metal-Free and All-polymer Dual-Ion Battery.

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-12-15 DOI: 10.1002/smtd.202401298

Alagar Ramar, Ruben Foeng, Jayaraman Divyavalli, Fu-Ming Wang, Pei-Yun Kao, Citra Deliana Dewi Sundari, Ching-Kai Chang, Laurien Merinda, Bai-Tai Liu

{"title":"Redox State-Driven Synthesis of Mesoporous and Microsphere Poly(phenylenediamine) for Transition Metal-Free and All-polymer Dual-Ion Battery.","authors":"Alagar Ramar, Ruben Foeng, Jayaraman Divyavalli, Fu-Ming Wang, Pei-Yun Kao, Citra Deliana Dewi Sundari, Ching-Kai Chang, Laurien Merinda, Bai-Tai Liu","doi":"10.1002/smtd.202401298","DOIUrl":"https://doi.org/10.1002/smtd.202401298","url":null,"abstract":"Dual-ion batteries (DIBs) are garnering immense attention for their capability to operate without the expensive elements required by lithium-ion batteries. Phenylenediamine serves as a versatile and sustainable resource, enabling the efficient preparation of both cathode and anode materials through precise molecular control and straightforward synthesis. The innovative asymmetrical DIBs based on amine-rich poly(phenylenediamine) cathodes and imine-rich poly(phenylenediamine) anodes enable oxidative and reductive states, providing a transition metal-free rechargeable battery. The polarity difference between amine and imine redox groups in the polymeric structure resulted in a high cell voltage of 2.2 V and a specific capacity of 100 mAh g-1, yielding an energy density of 220 Wh kg-1. The radical cation generated at the cathode found stability through aromatic resonance, while the radical anion formed at the anode is supported by the quinoid structure. The exciting insights in energy storage promise a revolution with rechargeable batteries using abundant elements, offering sustainable energy solutions.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401298"},"PeriodicalIF":10.7,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826805","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 High-Resolution Microscopy System for Biological Studies of Cold-Adapted Species Under Physiological Conditions.

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-12-15 DOI: 10.1002/smtd.202401682

Anne-Pia M Marty, Edward N Ward, Jacob R Lamb, Francesca W van Tartwijk, Lloyd S Peck, Melody S Clark, Clemens F Kaminski

{"title":"A High-Resolution Microscopy System for Biological Studies of Cold-Adapted Species Under Physiological Conditions.","authors":"Anne-Pia M Marty, Edward N Ward, Jacob R Lamb, Francesca W van Tartwijk, Lloyd S Peck, Melody S Clark, Clemens F Kaminski","doi":"10.1002/smtd.202401682","DOIUrl":"https://doi.org/10.1002/smtd.202401682","url":null,"abstract":"The Antarctic seabed harbors significant biodiversity, and almost 90% of oceanic environments are permanently below 5 °C (i.e., deep sea and polar regions). However, organisms whose entire lifecycle occurs around 0 °C are understudied, leaving this large and diverse proportion of the global biome poorly understood. To address this question at the cellular level, tools are required for high-resolution imaging of biological systems under physiological conditions. This poses severe technical challenges. High-resolution imaging objectives require short working distances and immersion media, causing rapid heat transfer from the microscope to the sample. This affects the viability of live specimens and the interpretability of results. Here, we present a method for high-fidelity imaging of live biological samples at temperatures of around, or below, 0 °C. It relies on hardware additions to traditional microscopy, namely as a cooling collar, 10% ethanol as an immersion medium, and nitrogen flow to reduce condensation It can be straightforwardly implemented on different microscopy modalities, including super-resolution imaging. The method is demonstrated in live cell cultures derived from Antarctic fish and highlights the need to maintain physiological conditions for these fragile samples. Future applications include evolutionary biology, biophysics and biotechnology.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401682"},"PeriodicalIF":10.7,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826887","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

Two-Dimensional Transition Metal Dichalcogenides (2D TMDs) Coupled With Zero-Dimensional Nanomaterials (0D NMs) for Advanced Photodetection. 二维过渡金属二卤化物（2D TMDs）与零维纳米材料（0D NMs）耦合用于先进光电探测。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-12-15 DOI: 10.1002/smtd.202401240

Ming-Jin Liu, Shin-Yi Tang, Ruei-Hong Cyu, Chia-Chen Chung, Yu-Ren Peng, Pei-Jung Yang, Yu-Lun Chueh

{"title":"Two-Dimensional Transition Metal Dichalcogenides (2D TMDs) Coupled With Zero-Dimensional Nanomaterials (0D NMs) for Advanced Photodetection.","authors":"Ming-Jin Liu, Shin-Yi Tang, Ruei-Hong Cyu, Chia-Chen Chung, Yu-Ren Peng, Pei-Jung Yang, Yu-Lun Chueh","doi":"10.1002/smtd.202401240","DOIUrl":"https://doi.org/10.1002/smtd.202401240","url":null,"abstract":"The integration of 2D transition metal dichalcogenides (TMDs) with other materials presents a promising approach to overcome inherent limitations and enable the development of novel functionalities. In particular, 0D nanomaterials (0D NMs) offer notable advantages for photodetection, including broadband light absorption, size-dependent optoelectronic properties, high quantum efficiency, and good compatibility. Herein, the integration of 0D NMs with 2D TMDs to develop high-performance photodetectors is reviewed. The review provides a comprehensive overview of different types of 0D NMs, including plasma nanoparticles (NPs), up-conversion NPs, quantum dots (QDs), nanocrystals (NCs), and small molecules. The discussion starts with an analysis of the mechanism of 0D NMs on 2D TMDs in photodetection, exploring various strategies for improving the performance of hybrid 2D TMDs/0D NMs. Recent advancements in photodetectors combining 2D TMDs with 0D NMs are investigated, particularly emphasizing critical factors such as photosensitivity, photogain, specific detectivity, and photoresponse speed. The review concludes with a summary of the current status, highlighting the existing challenges and prospective developments in the advancement of 0D NMs/2D TMDs-based photodetectors.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401240"},"PeriodicalIF":10.7,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826572","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

Molecular Design and Alignment for Ambipolar SCLC Mobility in Self-Assembled Columnar Discogens.

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-12-15 DOI: 10.1002/smtd.202401634

Joydip De, Ritobrata De, Indu Bala, Santosh Prasad Gupta, Rahul Singh Yadav, Upendra Kumar Pandey, Santanu Kumar Pal

{"title":"Molecular Design and Alignment for Ambipolar SCLC Mobility in Self-Assembled Columnar Discogens.","authors":"Joydip De, Ritobrata De, Indu Bala, Santosh Prasad Gupta, Rahul Singh Yadav, Upendra Kumar Pandey, Santanu Kumar Pal","doi":"10.1002/smtd.202401634","DOIUrl":"https://doi.org/10.1002/smtd.202401634","url":null,"abstract":"The future of next-generation electronics relies on low-cost organic semiconductors that are tailored to simultaneously provide all requisite optoelectronic properties, focusing greatly on ambipolar charge-transport and solution processability. In this regard, room-temperature discotic liquid crystals (DLCs) are potential candidates, where quasi-1D self-assembly affords a charge-transport channel along their columnar axis. This work shows a molecular design strategy by utilizing anthraquinone as the primary motif, surrounded by ester functionalized tri-alkoxy phenyl units to develop room-temperature DLCs (1.1-1.3). Here, the polar ester functionality stabilizes the columnar mesophase over a wide range through the involvement of dipole-dipole interaction along with the π-π stacking. Throughout the entire mesophase transition, reported compounds 1.1-1.3 exhibit a highly ordered 2D columnar oblique (Colob) self-assembly. Space charge limited current (SCLC) experiments reveal balanced ambipolar charge transport, with the maximum hole and electron mobilities of 5.04 and 4.93 cm2 V-1 s-1, respectively. From the conoscopic results, their propensity to align in a highly homeotropic fashion is demonstrated. It is further justified by the azimuthal plot corresponding to the (11) peak of grazing incidence small angle X-ray scattering (GISAXS), denoting the crucial role of the design and alignment for efficient movement of charge carriers in the material.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401634"},"PeriodicalIF":10.7,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826892","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

Trivalent Ionic Molecular Bridges as Efficient Charge-Trapping Method for All-Solid-State Organic Synaptic Transistors toward Neuromorphic Signal Processing Applications. 三价离子分子桥作为全固态有机突触晶体管的高效电荷捕获方法，实现神经形态信号处理应用。

IF 10.7 2区材料科学

Small Methods Pub Date : 2024-12-15 DOI: 10.1002/smtd.202401885

Taehoon Kim, Woongki Lee, Youngkyoo Kim

{"title":"Trivalent Ionic Molecular Bridges as Efficient Charge-Trapping Method for All-Solid-State Organic Synaptic Transistors toward Neuromorphic Signal Processing Applications.","authors":"Taehoon Kim, Woongki Lee, Youngkyoo Kim","doi":"10.1002/smtd.202401885","DOIUrl":"https://doi.org/10.1002/smtd.202401885","url":null,"abstract":"Achieving high retention of memory state is crucial in artificial synapse devices for neuromorphic computing systems. Of various memorizing methods, a charge-trapping method provides fast response times when it comes to the smallest size of electrons. Here, for the first time, it is demonstrated that trivalent molecular bridges with three ionic bond sites in the polymeric films can efficiently trap electrons in the organic synaptic transistors (OSTRs). A water-soluble polymer with sulfonic acid groups, poly(2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPSA), is reacted with melamine (ML) to make trivalent molecular bridges with three ionic bond sites for the application of charge-trapping and gate-insulating layer in all-solid-state OSTRs. The OSTRs with the PAMPSA:ML layers are operated at low voltages (≤5 V) with pronounced hysteresis and high memory retention characteristics (ML = 25 mol%) and delivered excellent potentiation/depression performances under modulation of gate pulse frequency. The optimized OSTRs could successfully process analog (Morse/Braile) signals to synaptic current datasets for recognition/prediction logics with an accuracy of >95%, supporting strong potential as all-solid-state synaptic devices for neuromorphic systems in artificial intelligence applications.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2401885"},"PeriodicalIF":10.7,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826565","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