Small最新文献 - Book学术

Flexible Linker Spacer Length Modulation in Cd-Based Metal–Organic Frameworks: Impact on Polarity and Sequestration Abilities (Small 13/2025)

IF 13 2区材料科学

Small Pub Date : 2025-04-02 DOI: 10.1002/smll.202570100

Himanshi Bhambri, Alisha Gogia, Sanjay K. Mandal

引用次数: 0

Self-Aggregation Control of Porphyrin for Enhanced Selective Covalent Organic Network Membranes (Small 13/2025)

IF 13 2区材料科学

Small Pub Date : 2025-04-02 DOI: 10.1002/smll.202570102

Zheng Wang, Keizo Nakagawa, Kecheng Guan, Mengyang Hu, Zhaohuan Mai, Wenming Fu, Qin Shen, Yasunao Okamoto, Atsushi Matsuoka, Eiji Kamio, Tomohisa Yoshioka, Hideto Matsuyama

引用次数: 0

Operando Exploration of CoAl-LDH: Transformations Driving Alkaline Oxygen Evolution Reaction

IF 13.3 2区材料科学

Small Pub Date : 2025-04-02 DOI: 10.1002/smll.202412351

Mattia Cattelan, Jijin Yang, Leonardo Cielo, Silvia Nappini, Silvia Carlotto, Marco Nalesso, Ilargi Napal Azcona, Rossella Yivlialin, Xiaoming Sun, Gianlorenzo Bussetti, Elena Magnano, Stefano Agnoli

{"title":"Operando Exploration of CoAl-LDH: Transformations Driving Alkaline Oxygen Evolution Reaction","authors":"Mattia Cattelan, Jijin Yang, Leonardo Cielo, Silvia Nappini, Silvia Carlotto, Marco Nalesso, Ilargi Napal Azcona, Rossella Yivlialin, Xiaoming Sun, Gianlorenzo Bussetti, Elena Magnano, Stefano Agnoli","doi":"10.1002/smll.202412351","DOIUrl":"https://doi.org/10.1002/smll.202412351","url":null,"abstract":"This work reports a comprehensive study on the morphology, composition, and electronic structure of CoAl layered double hydroxide (CoAl-LDH) during the oxygen evolution reaction (OER). To capture electrochemically induced transformations, operando spectroscopic and microscopic methods are combined. The complementary data provided by operando near-edge X-ray absorption fine structure (NEXAFS), supported by density functional theory (DFT) calculations, and electrochemical atomic force microscopy (AFM), reveal that under OER conditions, CoAl-LDH is fragmented into smaller particles due to Al leaching. This process forms a “resting” phase with an average Co oxidation state of 2.5+, which readily transforms into the OER-active β-CoOOH phase upon further potential increase. This work exemplifies how operando methods enable precise tracking of oxidation state changes, element dissolution, and structural transformations at the nanoscale while the electrocatalyst is active. This approach contrasts with conventional pre- and post-mortem characterization, which would instead suggest Co3O4 formation. These findings extend beyond the specific example of CoAl-LDH, emphasizing the crucial importance of selective cation leaching, recrystallization, and morphological restructuring, since these processes play a key role not only in designing advanced multi-element materials but also in understanding the complex nanoscale mechanisms that govern the activation and durability of practical electrocatalysts.","PeriodicalId":228,"journal":{"name":"Small","volume":"38 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758713","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

Unlocking Low-Temperature Ammonia Decomposition via an Iron Metal–Organic Framework-Derived Catalyst Under Photo-Thermal Conditions (Small 13/2025)

IF 13 2区材料科学

Small Pub Date : 2025-04-02 DOI: 10.1002/smll.202570101

Angel Sousa, Diego Mateo, Luis Garzon-Tovar, Kevin Brennan, Alejandra Rendón-Patiño, Natalia Morlanés, Xinhuilan Wang, Juan C. Navarro, Javier Ruiz-Martinez, Max García-Melchor, Jorge Gascon

引用次数: 0

Endocytic Uptake of Self-Assembled Iridium(III) Nanoaggregates for Holistic Treatment of Metastatic 3D Triple-Negative Breast Tumor Spheroids (Small 13/2025)

IF 13 2区材料科学

Small Pub Date : 2025-04-02 DOI: 10.1002/smll.202570103

Ayushi Chaudhary, Ashwini Kumar, Nikhil Swain, Kajal Chaudhary, Himanshu Sonker, Sayari Dewan, Rutwik Anil Patil, Ritika Gautam Singh

引用次数: 0

Glass Transition, Liquid Dynamics, and Thermal Degradation in 2D Hybrid Halide Perovskites

IF 13.3 2区材料科学

Small Pub Date : 2025-04-02 DOI: 10.1002/smll.202500311

Owain S. Houghton, Chumei Ye, Alison C. Twitchett-Harrison, Siân E. Dutton, Thomas D. Bennett, A. Lindsay Greer

{"title":"Glass Transition, Liquid Dynamics, and Thermal Degradation in 2D Hybrid Halide Perovskites","authors":"Owain S. Houghton, Chumei Ye, Alison C. Twitchett-Harrison, Siân E. Dutton, Thomas D. Bennett, A. Lindsay Greer","doi":"10.1002/smll.202500311","DOIUrl":"https://doi.org/10.1002/smll.202500311","url":null,"abstract":"2D hybrid organic–inorganic perovskites (2D HOIPs) are of interest for optoelectronic and phase-change applications. Using ultra-fast (flash) differential scanning calorimetry (FDSC), this study shows the 2D HOIPs (S-Cl-MBA)2PbI4 and (R-Cl-MBA)2PbBr4 (Cl-MBA referring to 4-chloro-α-methylbenzylamine) form a glass on cooling. Both show evidence of a liquid-to-glass transition during quenching from the liquid state; on reheating, a glass-to-liquid transition is followed by crystallization and melting. Using continuous heating in FDSC, the temperature dependence of the liquid viscosity of (S-Cl-MBA)2PbI4 is characterized. The kinetic fragility of the liquid is similar to that of bulk metallic glass-formers and significantly lower than that of organic and phase-change chalcogenide liquids. On cooling the liquid, glass formation is first impeded by thermal degradation, then crystallization. The stages of thermal degradation can be related to known mechanisms. This study highlights the reduced glass-transition temperature and the liquid fragility as key parameters in guiding the optimization of 2D HOIP compositions for targeted applications.","PeriodicalId":228,"journal":{"name":"Small","volume":"98 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758616","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

Polytriphenylamine Conjugated Microporous Polymers as Versatile Platforms for Tunable Hydrogen Storage (Small 13/2025)

IF 13 2区材料科学

Small Pub Date : 2025-04-02 DOI: 10.1002/smll.202570099

John D. Worth, Annela M. Seddon, Valeska P. Ting, Charl F. J. Faul

引用次数: 0

An Ultra-Thin Stretchable Electrode Based on High-Resilient Polyurethane Crosslinked with La3+-Complexes

IF 13.3 2区材料科学

Small Pub Date : 2025-04-02 DOI: 10.1002/smll.202501839

Qi-Sheng Huang, Ruohan Yang, Zhi-Dong Yang, Pei-Chen Zhao, Xiaoliang Wang, Cheng-Hui Li

{"title":"An Ultra-Thin Stretchable Electrode Based on High-Resilient Polyurethane Crosslinked with La3+-Complexes","authors":"Qi-Sheng Huang, Ruohan Yang, Zhi-Dong Yang, Pei-Chen Zhao, Xiaoliang Wang, Cheng-Hui Li","doi":"10.1002/smll.202501839","DOIUrl":"https://doi.org/10.1002/smll.202501839","url":null,"abstract":"Stretchable electronic skins with multifunctional sensing capabilities are of great importance in smart healthcare, wearable display electronics, intelligent robots, and human-machine interfaces. Thermoplastic elastomers play a pivotal role as soft substrate in the field of stretchable electronics. However, the dynamic interactions of common thermoplastic elastomers often result in high hysteresis and fatigue damage, limiting their performance and durability. In this study, a highly resilient and fatigue-resistant elastomer is developed by employing La3+-complexes as crosslinkers. The woven structure formed between the prepolymer ligands and lanthanum (III) metal ions establishes stable coordination interactions and introduces additional entanglements around the coordination crosslinkers. Furthermore, this woven structure self-assembles into hierarchical nanoarchitectures, which serve as physical crosslinks, significantly enhancing the mechanical strength. As a result, the new elastomers exhibit exceptional mechanical strength (Young's modulus ≈3.47 MPa; maximum stress ≈16.52 MPa), resilience (residual strain during cyclic stretching at 100% strain ≈8%), fatigue resistance (strength retention rate ≈90% after 2000 cycles stretching), and stable thermomechanical properties (creep strain ≈14.43% and residual strain ≈0.22% at 80 °C 0.1 MPa). Leveraging this high-performance polyurethane elastomer, ultra-thin flexible electrodes are fabricated, which can achieve stable and long-term monitoring of the physiological signals of human body.","PeriodicalId":228,"journal":{"name":"Small","volume":"3 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758714","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

Regulating Entanglement Networks of Fibrillatable Binders for Sub-20-µm Thick, Robust, Dry-Processed Solid Electrolyte Membranes in All-Solid-State Batteries (Small 13/2025)

IF 13 2区材料科学

Small Pub Date : 2025-04-02 DOI: 10.1002/smll.202570097

Seokyoon Yoon, Seok Hun Kang, Jaecheol Choi, Ju Young Kim, Young-Gi Lee, Young-Sam Park, Dong Ok Shin

引用次数: 0

Microtubules Disruption Alters the Cellular Structures and Mechanics Depending on Underlying Chemical Cues (Small 13/2025)

IF 13 2区材料科学

Small Pub Date : 2025-04-02 DOI: 10.1002/smll.202570096

Shimaa A. Abdellatef, Hongxin Wang, Jun Nakanishi

引用次数: 0