IF 13.3 2区材料科学

Small Pub Date : 2025-04-24 DOI: 10.1002/smll.202502758

Hasem Ansari, Nishchal Bharadwaj, Goutam Pramanik, Indranath Chakraborty, Biswarup Pathak, Ananya Baksi

{"title":"Enhancement of NIR II Emission of Au12Ag32 Clusters by Tuning the Au Positions","authors":"Hasem Ansari, Nishchal Bharadwaj, Goutam Pramanik, Indranath Chakraborty, Biswarup Pathak, Ananya Baksi","doi":"10.1002/smll.202502758","DOIUrl":"https://doi.org/10.1002/smll.202502758","url":null,"abstract":"Precise alloying at the preferred location to enhance the optical properties of metal nanoclusters is challenging as often the most stable isomer is produced. To alter the location of Au atoms on the [Au12Ag32(SR)30]4− cluster, a new approach by changing the reacting Au precursor following an inter-cluster reaction is reported. A Au(I) containing cluster, [Au18Se8(DPPE)6]2+ as the Au source, while reacting with [Ag44(SR)30]4−, is used, and the 12 Au atoms occupy the surface position instead of the core. The whole reaction is monitored in-line using high-resolution trapped ion mobility spectrometry (TIMS), and the change in collision cross section (CCS) of the intermediates and the final product reveal that Au atoms can dynamically migrate within the cluster and in the final product is an all Au out isomer of [Au12Ag32(SR)30]4−. Changing the location of the Au atoms shows an impact on the NIR II emission at ≈1340 nm of parent [Ag44(SR)30]4−. The emission of the synthesized alloy is enhanced tenfold compared to [Ag44(SR)30]4− and is ≈20 nm blueshifted. Density functional theory calculations reveal that the Au/Ag atoms on the staple are slightly positively charged, making it convenient for the reacting Au(I)18Se8 cluster to be exchanged on the surface.","PeriodicalId":228,"journal":{"name":"Small","volume":"24 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867239","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

Unraveling the Impact of a Cyclized Phenylethylamine-Derived Spacer Cation on the Structural, Electrical, and Photovoltaic Performance of Quasi-2D Ruddlesden-Popper Perovskites 揭示了环化苯乙胺衍生的间隔阳离子对准二维Ruddlesden-Popper钙钛矿结构、电学和光伏性能的影响

IF 13.3 2区材料科学

Small Pub Date : 2025-04-24 DOI: 10.1002/smll.202501863

Yunhang Xie, Wenlong Liang, Pengwei Li, Zhipeng Miao, Fangfang Yuan, Yapeng Shi, Ting Zhang, Sihui Peng, Peiwen Gu, Jie Yu, Yanlin Song, Yiqiang Zhang

{"title":"Unraveling the Impact of a Cyclized Phenylethylamine-Derived Spacer Cation on the Structural, Electrical, and Photovoltaic Performance of Quasi-2D Ruddlesden-Popper Perovskites","authors":"Yunhang Xie, Wenlong Liang, Pengwei Li, Zhipeng Miao, Fangfang Yuan, Yapeng Shi, Ting Zhang, Sihui Peng, Peiwen Gu, Jie Yu, Yanlin Song, Yiqiang Zhang","doi":"10.1002/smll.202501863","DOIUrl":"https://doi.org/10.1002/smll.202501863","url":null,"abstract":"The discovery of new ligand molecules is crucial for advancing the performance and stability of 2D perovskites in optoelectronic devices. In this study, dihydroindole (IDN) cation, a novel organic spacer derived from the cyclization of phenylethylamine (PEA), is employed to fabricate stable and efficient quasi-2D Ruddlesden-Popper (RP) perovskite solar cells (PSCs). The IDN-based perovskite, (IDN)2PbI4, exhibits an average Pb─I─Pb bond angle exceeding 170°, with minimal distortion in the inorganic layer. Furthermore, the IDN molecules possess a larger dipole moment, reducing exciton binding energy to 79.86 meV. The IDN-based perovskite films demonstrate exceptional quality, with significantly enlarged grain sizes. This is attributed to the interaction between IDN molecules and [PbI6]4− octahedra, which enhances crystallinity, decreases trap density, extends carrier diffusion length, and increases carrier lifetime. The optimized device achieves an efficiency of 17.60%, markedly surpassing that of PEA-based devices (11.46%). Unencapsulated IDN-based quasi-2D RP PSCs exhibit superior thermal and humidity stability, making them promising for practical applications. These findings offer an effective strategy for the development of novel spacer cations, paving the way for high-performance 2D RP PSCs.","PeriodicalId":228,"journal":{"name":"Small","volume":"7 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867246","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

Microsensor-Internalized Fibers as Autonomously Controllable Soft Actuators (Small 16/2025) 微传感器内部化光纤作为自主可控软致动器（Small 16/2025）

IF 13 2区材料科学

Small Pub Date : 2025-04-24 DOI: 10.1002/smll.202570124

Youngbin Lee, Joonhee Won, Dong-Yeong Kim, Seongjun Park

引用次数: 0

Cell-Targeting Bio-Catalytic Killer Protocell for High-Order Assembly Guided Cancer Cell Inhibition 细胞靶向生物催化杀伤原细胞用于高阶组装引导的癌细胞抑制

IF 13.3 2区材料科学

Small Pub Date : 2025-04-24 DOI: 10.1002/smll.202500047

Shuhan Xiong, Zeqi Huang, Vincent Mukwaya, Weili Zhao, Li Wang, Hongjing Dou

{"title":"Cell-Targeting Bio-Catalytic Killer Protocell for High-Order Assembly Guided Cancer Cell Inhibition","authors":"Shuhan Xiong, Zeqi Huang, Vincent Mukwaya, Weili Zhao, Li Wang, Hongjing Dou","doi":"10.1002/smll.202500047","DOIUrl":"https://doi.org/10.1002/smll.202500047","url":null,"abstract":"The design and construction of synthetic therapeutic protocells capable of engaging in high-order assembly with living cells represent a significant challenge in synthetic biology and bioengineering. Inspired by cell membrane receptor-ligand systems, a protocell bioreactor is developed for targeted cancer cell elimination. This is achieved by constructing orthogonal, polysaccharide-based protocells (polysaccharidosomes, P-somes) through a bottom-up approach that leverages host-guest chemistry. The protocells are assembled via electrostatically-driven self-assembly of β-cyclodextrin (β-CD)-modified amino-dextran on a sacrificial template encapsulating glucose oxidase (GOx). To enable specific cancer cell targeting and catalytic activity, cell-targeting ligands (arginylglycylaspartic acid, cRGD) and catalase-like platinum-gold nanoparticles (Pt-AuNPs) are introduced through host-guest interactions, forming a fully functional, cell-targeting, bio-catalytic killer protocell. These protocells are programmed to spatially couple the GOx/Pt-AuNP catalytic reaction cascade. In the presence of glucose and hydroxyurea, this cascade generates a localized flux of nitric oxide (NO), which is exploited for in vitro cancer cell inhibition. Overall, the results highlight the potential of integrating orthogonal and synergistic tumor inhibition mechanisms within synthetic microcompartments. This platform demonstrates promise for future therapeutic applications, especially in cancer treatment, and represents a step forward in the development of programmable protocell-based therapeutic systems.","PeriodicalId":228,"journal":{"name":"Small","volume":"14 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867242","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

Preparation of Highly Efficient All-pH Bifunctional Water Electrolysis Catalysts Through a Surface Modification Strategy 表面改性制备高效全ph双功能水电解催化剂

IF 13.3 2区材料科学

Small Pub Date : 2025-04-24 DOI: 10.1002/smll.202501330

Yangyang Wu, Yang Cheng, Li Lv, Tao Zhang, Mao Peng, Wenxiang Tang, Zongpeng Zou, Shengwei Tang, Yan Wang

{"title":"Preparation of Highly Efficient All-pH Bifunctional Water Electrolysis Catalysts Through a Surface Modification Strategy","authors":"Yangyang Wu, Yang Cheng, Li Lv, Tao Zhang, Mao Peng, Wenxiang Tang, Zongpeng Zou, Shengwei Tang, Yan Wang","doi":"10.1002/smll.202501330","DOIUrl":"https://doi.org/10.1002/smll.202501330","url":null,"abstract":"Electrolytic hydrogen production from water is a very promising technology, and catalysts capable of efficient operation over a wide pH range are essential for energy storage and conversion. Herein, a trace Ru catalytic core restructures nickel foam (NF) under polymeric protection, with temperature gradient control forming HER-active metal monomers at low temperatures and OER-suitable oxides at high temperatures. It is demonstrated that the surface modification strategy can help NF to maintain its own backbone structure during the carbonation process and that the resulting catalysts possess excellent properties. The synthesized catalysts-Ru@NF-KPDA-550 exhibit the lowest OER overpotentials of 183 mV in 0.5 M H2SO4 and 151 mV in 1.0 M KOH, and Ru@NF-KPDA-350 exhibits the lowest HER overpotentials of 11.8 mV in 0.5 M H2SO4 and 13.4 mV in 1.0 M KOH for Ru@NF-KPDA-350 at 10 mA cm−2. The DFT simulations show that the synergistic interaction between Ru and Ni components, which optimizes their d-band centers, enhances the HER and OER pathways, thereby lowering activation barriers and boosting catalytic performance. This work provides a viable strategy for the design of pH-universal electrocatalysts for the overall water splitting.","PeriodicalId":228,"journal":{"name":"Small","volume":"13 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867208","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

Breathable Window Screen Against High-velocity Droplet Penetration 防止高速液滴渗透的透气窗纱

IF 13.3 2区材料科学

Small Pub Date : 2025-04-24 DOI: 10.1002/smll.202409870

Jianing Song, Yao Luo, Jinlong Yang, Yong Li, Harry Qi, Ningyuan Xu, Huijuan Shao, Yishen Zhang, Yan Zhou, Zhenbing Luo, Deuhui Wang, Xu Deng

{"title":"Breathable Window Screen Against High-velocity Droplet Penetration","authors":"Jianing Song, Yao Luo, Jinlong Yang, Yong Li, Harry Qi, Ningyuan Xu, Huijuan Shao, Yishen Zhang, Yan Zhou, Zhenbing Luo, Deuhui Wang, Xu Deng","doi":"10.1002/smll.202409870","DOIUrl":"https://doi.org/10.1002/smll.202409870","url":null,"abstract":"Window screens serve the multiple purposes of enabling ventilation while preventing the ingress of solid objects and insects. However, their intrinsic porosity makes them susceptible to fluid intrusion while maintaining ventilation, notably evident in the infiltration of high-velocity raindrops during inclement weather, flooding the room. Addressing this challenge, bilayer synergistic mesh featuring an upper superhydrophilic (SHPi) surface and a bottom Janus wettability designed is presented to withstand puncture from continuous high-speed droplets. This innovative design incorporates a dual waterproof mechanism, providing instantaneous penetration resistance through energy dissipation and long-term infiltration resistance by a stable liquid film against high-speed droplets. The SHPi-Janus bilayer synergistic mesh demonstrates exceptional capability in repelling droplet penetration at a vertical high velocity of 4.5 m s−1, significantly mitigating droplet infiltration under most rainfall conditions in the real world. Experimental findings reveal that the droplet penetration ratio of SHPi-Janus mesh is a mere 3.6% under sustained high-velocity droplet impact, a substantial leap forward compared to the 61.1% observed with commercial screen.","PeriodicalId":228,"journal":{"name":"Small","volume":"32 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867240","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

Heterogeneous Carbon Designed with Disorder-in-Ordered Nanostructure toward High-Rate and Ultra-stable Sodium Ion Storage (Small 16/2025) 无序有序纳米结构设计的非均相碳用于高速率超稳定钠离子储存（Small 16/2025）

IF 13 2区材料科学

Small Pub Date : 2025-04-24 DOI: 10.1002/smll.202570123

Tianyun Zhang, Tian Zhang, Fujuan Wang, Lirong Zhang, Hanhan Kong, Yu Li, Fen Ran

引用次数: 0

Ordered Mesoporous Carbon Featuring Single-Crystal Morphology and Tunable Pore Architectures via EtOH-Mediated Micelle Assembly 有序介孔碳具有单晶形态和可调的孔隙结构，通过乙羟基介导的胶束组装

IF 13.3 2区材料科学

Small Pub Date : 2025-04-24 DOI: 10.1002/smll.202502475

Yang Li, Yanhong Liu, Kun Zhang, Xue Liu, Jiaao Hu, Shenghui Jiao, Sha Luo, Chunhui Ma, Wei Li, Shouxin Liu

{"title":"Ordered Mesoporous Carbon Featuring Single-Crystal Morphology and Tunable Pore Architectures via EtOH-Mediated Micelle Assembly","authors":"Yang Li, Yanhong Liu, Kun Zhang, Xue Liu, Jiaao Hu, Shenghui Jiao, Sha Luo, Chunhui Ma, Wei Li, Shouxin Liu","doi":"10.1002/smll.202502475","DOIUrl":"https://doi.org/10.1002/smll.202502475","url":null,"abstract":"The precise control of reaction kinetics and the synchronous regulation of the micelle assembly in the soft-templating method for synthesizing ordered mesoporous carbon presents a significant challenge. In this study, a versatile ethanol-mediated self-assembly strategy is introduced to synthesize ordered mesoporous carbons (OMCs) with diverse morphologies and well-defined mesostructures using liquefied wood (LW). Ethanol functions as both a proton-trapping agent and a linker between carbon precursors and templates, enabling fine-tuned regulation of the self-assembly kinetics while providing additional hydrogen bonding interactions. Furthermore, the micelle structure can be precisely manipulated from cylindrical to spherical through ethanol-induced selective swelling of hydrophilic blocks, resulting in a reduction in packing parameter (p) from 1/3 < (p) < 1/2 to (p) ≤ 1/3. Notably, the spherical composite micelles self-assemble into single crystals with highly ordered body-centered mesostructures. The fabricated ordered mesoporous carbon single crystal (OMCSC) electrochemical sensing polymers exhibit absolute enantiomeric discrimination for L- and D-tryptophan. This EtOH-mediated self-assembly approach not only elucidates the role of ethanol in the self-assembly process but also offers a promising pathway for fabricating versatile OMCs from renewable biomass resources.","PeriodicalId":228,"journal":{"name":"Small","volume":"5 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867216","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

Structural-Insensitive Descriptors Ns,p Based on M-N4-OH Active Entity for Predicting and Enhancing ORR Activity in 3d Transition Metal Catalysts 基于M-N4-OH活性实体的结构不敏感描述符Ns，p预测和增强三维过渡金属催化剂的ORR活性

IF 13.3 2区材料科学

Small Pub Date : 2025-04-24 DOI: 10.1002/smll.202500789

Huan Li, Liyuan Yang, Wanying Wang, Jinchao Xu, Qingyu Shan, Gang Chen, Wen Wang, Ruiting Hao, Chunning Zhao, Xiang Wan, Weichao Wang

{"title":"Structural-Insensitive Descriptors Ns,p Based on M-N4-OH Active Entity for Predicting and Enhancing ORR Activity in 3d Transition Metal Catalysts","authors":"Huan Li, Liyuan Yang, Wanying Wang, Jinchao Xu, Qingyu Shan, Gang Chen, Wen Wang, Ruiting Hao, Chunning Zhao, Xiang Wan, Weichao Wang","doi":"10.1002/smll.202500789","DOIUrl":"https://doi.org/10.1002/smll.202500789","url":null,"abstract":"The development of high-performance ORR catalysts is challenged by the understanding how the delocalized electrons in s- and p-orbitals influence oxygen intermediate adsorption and overall catalytic performance. To address these challenges, the from active unit to bulk catalyst (FAUC) design strategy is employed to investigate the roles of s- and p-orbitals in ORR activity. Specifically, six M-N4-OH (M = V, Cr, Mn, Fe, Co, and Ni) catalyst systems are constructed and analyzed using density functional theory (DFT), this study reveals that, compared to d-orbitals, the delocalized electrons in the s- and p-orbitals (Ns,p) exhibit a significant volcano relationship with ORR activity. This superior predictive capability arises from the weaker dependence of s- and p-orbitals on the local coordination environment. Additionally, a structure-activity relationship is established where shortening M─O and M─N bond lengths significantly increases Ns,p. Through modification strategies such as doping and loading, the Co─N bond lengths are regulated in Co-N4-OH-C, resulting in shorter bonds and increased Ns,p, which shifted ORR catalytic activity closer to the volcano peak. These findings validate the Ns,p descriptor's rationality and universality across various 3d transition metals, providing new insights for the design of high-performance ORR catalysts.","PeriodicalId":228,"journal":{"name":"Small","volume":"208 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867230","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

Morphology Controlled Covalent Organic Framework Nano-Trap for Synergetic Uranium Adsorption and Photoreduction 形态控制的共价有机框架纳米捕集器协同吸附和光还原铀

IF 13.3 2区材料科学

Small Pub Date : 2025-04-24 DOI: 10.1002/smll.202501578

Mudasir Ahmad, Xinmeng Mao, Kehan Zhao, Mehraj-ud-din Naik, Muhammad Rizwan Tariq, Idrees Khan, Baoliang Zhang

{"title":"Morphology Controlled Covalent Organic Framework Nano-Trap for Synergetic Uranium Adsorption and Photoreduction","authors":"Mudasir Ahmad, Xinmeng Mao, Kehan Zhao, Mehraj-ud-din Naik, Muhammad Rizwan Tariq, Idrees Khan, Baoliang Zhang","doi":"10.1002/smll.202501578","DOIUrl":"https://doi.org/10.1002/smll.202501578","url":null,"abstract":"Covalent organic frameworks (COFs) without donor–acceptor pairs or inefficient separation of photogenerated electrons are usually considered unfavorable for photocatalysis due to electron-hole recombination. However, the study demonstrates a nitrile (CN) functionalized covalent organic framework nano-traps (COF-nTs; COF-nTS1, COF-nTS2, and COF-nTS3), in which the CN groups act as electron-withdrawing centers, surrounding electron and facilitating charge separation, transport, and adsorption process. To further enhance the efficiency of charge carriers, a special approach is introduced to integrate morphology control through acid regulation and defect engineering. These key strategies optimize the key structure and improve photocatalytic performance, achieving a maximum uranium extraction capacity of 3548.1 mg g−1, which is significantly higher than previously reported COF-based photocatalysts under visible light. A flexible 3 × 6 cm film of COF-nTs3 is prepared by the blade coating method, successfully extracting uranium from spiked seawater with a 7-day capacity of 76 mg g−1, a saturation capacity of 193 mg g−1, and 0.2 day half saturation time. This demonstrates its potential for uranium extraction from aqueous solutions.","PeriodicalId":228,"journal":{"name":"Small","volume":"7 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867236","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

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