Small Science最新文献_第4页

Metal-Organic Frameworks Meet Two-Dimensional Materials in Polymer Matrices for Flame Retardant and Sensor Applications. 金属-有机框架满足二维材料在聚合物基体中的阻燃和传感器应用。

IF 11.1

Small Science Pub Date : 2025-02-21 eCollection Date: 2025-06-01 DOI: 10.1002/smsc.202400611

Xue Bi, Yanan Hou, Ye-Tang Pan, Siqi Huo, Congling Shi, Jiyu He, Rongjie Yang

{"title":"Metal-Organic Frameworks Meet Two-Dimensional Materials in Polymer Matrices for Flame Retardant and Sensor Applications.","authors":"Xue Bi, Yanan Hou, Ye-Tang Pan, Siqi Huo, Congling Shi, Jiyu He, Rongjie Yang","doi":"10.1002/smsc.202400611","DOIUrl":"10.1002/smsc.202400611","url":null,"abstract":"Functional polymer composites offer versatility and high performance through material fusion, but flammability is an obstacle to application. Metal-organic frameworks (MOFs) have attracted attention in the field of flame retardant due to their structural diversity and high specific surface area, but they suffer from low efficiency and agglomeration issues when used alone. Combining with two-dimensional (2D) nanomaterials can improve the above situation. Herein, strategies are explored for integrating MOFs with 2D materials through physical mixing and in situ growth to enhance their dispersion and flame-retardant effects in polymers. Additionally, the integration of sensing performance can achieve intelligent monitoring and control, as well as real-time risk assessment and system optimization. In summary, this review deeply analyzes the dispersion, interfacial interaction, and performance adjustment mechanism of composite materials and discusses in detail the application potential of MOFs and hybrids formed by 2D materials in the field of flame retardant and sensing. Finally, the opportunities and challenges faced by the integration of MOFs and 2D materials in functional polymer composites in the future are summarized and prospected. Herein, it is also expected to facilitate researchers to quickly understand the latest developments in the field and guide their effective design.","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 6","pages":"2400611"},"PeriodicalIF":11.1,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12168604/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144318080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Near-Infrared Emission Perovskites for Multifunctional Bioimaging. 近红外发射钙钛矿多功能生物成像。

IF 11.1

Small Science Pub Date : 2025-02-21 eCollection Date: 2025-06-01 DOI: 10.1002/smsc.202500033

Tianchi Wang, Jiabo Sun, Zhaowei Teng, Shuyi Yao, Junheng Yuan, Lulu Han, Dedan Mu, Hao Song, Xue Yu, Xuhui Xu

{"title":"Near-Infrared Emission Perovskites for Multifunctional Bioimaging.","authors":"Tianchi Wang, Jiabo Sun, Zhaowei Teng, Shuyi Yao, Junheng Yuan, Lulu Han, Dedan Mu, Hao Song, Xue Yu, Xuhui Xu","doi":"10.1002/smsc.202500033","DOIUrl":"10.1002/smsc.202500033","url":null,"abstract":"Bioimaging with remarkable noninvasive nature, ultrahigh resolution and sensitivity allows detection of pathologies of bones, organs, and tissues. Nevertheless, the achievement of more complete information in vivo is challenged by the necessity of multiple photodetectors with diverse response ranges. Herein, a multifunctional bioimaging with Cs2AgInCl6:Yb3+ perovskites via a single InGaAs detector for superior tissue presentation is realized in this work. Co-incorporation of foreign dopant contributes to alterations of local structural symmetry of the Cs2AgInCl6 host, disruption of parity-forbidden transitions, and reduction in electron-phonon coupling strength, thereby boosting the near-infrared (NIR) intensity by 40-fold of the corresponding perovskites drastically. Moreover, an X-ray excited NIR light output is 2.83 times that of commercial Bi4Ge3O12 scintillators. Thanks to the efficient NIR emission, the versatile perovskites film endows a multifunctional bioimaging with detailed information of biological tissue in vivo, which fundamentally offers viable avenues for promoting bioimaging technology with integrated access of tissue presentation.","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 6","pages":"2500033"},"PeriodicalIF":11.1,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12168608/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144318084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

All-Solution-Processable Hybrid Photothermoelectric Sensors with Carbon Nanotube Absorbers and Bismuth Composite Electrodes for Nondestructive Testing. 具有碳纳米管吸收剂和铋复合电极的无损检测全溶液可加工混合光热电传感器。

IF 11.1

Small Science Pub Date : 2025-02-20 eCollection Date: 2025-05-01 DOI: 10.1002/smsc.202400448

Yuto Matsuzaki, Reiji Tadenuma, Yuto Aoshima, Minami Yamamoto, Leo Takai, Yukito Kon, Daiki Sakai, Norika Takahashi, Ryo Koshimizu, Qi Zhang, Naoko Hagiwara, Meiling Sun, Daiki Shikichi, Raito Ota, Sayaka Hirokawa, Yukio Kawano, Kou Li

{"title":"All-Solution-Processable Hybrid Photothermoelectric Sensors with Carbon Nanotube Absorbers and Bismuth Composite Electrodes for Nondestructive Testing.","authors":"Yuto Matsuzaki, Reiji Tadenuma, Yuto Aoshima, Minami Yamamoto, Leo Takai, Yukito Kon, Daiki Sakai, Norika Takahashi, Ryo Koshimizu, Qi Zhang, Naoko Hagiwara, Meiling Sun, Daiki Shikichi, Raito Ota, Sayaka Hirokawa, Yukio Kawano, Kou Li","doi":"10.1002/smsc.202400448","DOIUrl":"10.1002/smsc.202400448","url":null,"abstract":"While photothermoelectric (PTE) sensor sheets are potentially suitable for testing applications, such as nondestructive material identifications in ultrabroad millimeter-wave infrared bands, their device designs have primarily employed a single-material channel. Herein, PTE sensor sheets generally combine photoinduced heating with associated thermoelectric (TE) conversion phenomena, and the employment of a single-material channel regulates device operations by missing opportunities for fully utilizing their fundamental parameters. For this situation, this work develops all-solution-processable and freely coatable (paintable) hybrid PTE sensors by an effective combination of the channel structure with bismuth composite (Bicom) TE electrodes (Seebeck coefficient > 100 μV K-1) and efficient carbon nanotube film photothermal absorbers. This hybrid PTE sensor device stably forms its TE electrodes as easy-to-handle pastes of Bicom material powders with high Seebeck coefficients by effectively employing conductive solvents and surfactants. Following these material and process preparations, the hybrid PTE sensor functions in ultrabroadband regions beyond the conventional detectors with comparable sensitivities to the existing narrowband devices in individual ranges and provides diverse optical measurement opportunities. Indeed, the easy-to-handle device fabrication process and advantageous photodetection performances of the hybrid PTE sensor demonstrate high usability for nondestructive testing applications (noncontact inspections, panoramic 3D camera monitoring, and portable device setups).","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 5","pages":"2400448"},"PeriodicalIF":11.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12087774/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Understanding the Mechanism of Cardiotoxicity Induced by Nanomaterials: A Comprehensive Review. 纳米材料致心脏毒性机制的研究综述。

IF 11.1

Small Science Pub Date : 2025-02-20 eCollection Date: 2025-05-01 DOI: 10.1002/smsc.202400498

Zaiyong Zheng, Shuang Zhu, Xiaobo Wang, Haoran Wu, Min Fu, Houxiang Hu, Zhanjun Gu, Chunxiang Zhang

{"title":"Understanding the Mechanism of Cardiotoxicity Induced by Nanomaterials: A Comprehensive Review.","authors":"Zaiyong Zheng, Shuang Zhu, Xiaobo Wang, Haoran Wu, Min Fu, Houxiang Hu, Zhanjun Gu, Chunxiang Zhang","doi":"10.1002/smsc.202400498","DOIUrl":"10.1002/smsc.202400498","url":null,"abstract":"Nanomaterials have been vastly used in daily life. However, owing to their unique properties, nanomaterials also show potential side effects. Among the various organs affected by nanomaterials, the circulatory system stands out as particularly vulnerable, drawing additional attention to its cardiac toxicity. To address the cardiovascular nanotoxicity and further promote the safe use of nanotechnology, a comprehensive review of the cardiotoxicity induced by nanomaterials is provided. The review begins by identifying the current research trends and hotspots in this field via a bibliometric analysis. Subsequently, based on the objectively obtained research hotspots, the mechanism of cardiovascular nanotoxicity, including exposure route, membrane injury, ion disturbance, oxidative stress, inflammation, and cell death, is reviewed and discussed. Finally, current strategies for the mitigation of nanotoxicity are also proposed. The objective of this review is to assist readers in understanding the mechanism of cardiotoxicity induced by nanomaterials and to facilitate their safe application for human health.","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 5","pages":"2400498"},"PeriodicalIF":11.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12087784/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hybrid Photoelectrodes Based on Electropolymerized Conjugated Porous Polymers for Enhanced Solar Energy Conversion. 基于电聚合共轭多孔聚合物的杂化光电极增强太阳能转换。

IF 11.1

Small Science Pub Date : 2025-02-20 eCollection Date: 2025-06-01 DOI: 10.1002/smsc.202400623

Elena Alfonso-González, Miguel Gomez-Mendoza, Carmen G López-Calixto, Miguel García-Tecedor, Ignacio J Villar-García, Freddy Oropeza, Marta Liras, Mariam Barawi Moran, Víctor A de la Peña O Shea

{"title":"Hybrid Photoelectrodes Based on Electropolymerized Conjugated Porous Polymers for Enhanced Solar Energy Conversion.","authors":"Elena Alfonso-González, Miguel Gomez-Mendoza, Carmen G López-Calixto, Miguel García-Tecedor, Ignacio J Villar-García, Freddy Oropeza, Marta Liras, Mariam Barawi Moran, Víctor A de la Peña O Shea","doi":"10.1002/smsc.202400623","DOIUrl":"10.1002/smsc.202400623","url":null,"abstract":"This work highlights and offers fundamental insights on the potential of electropolymerized conjugated porous polymers in developing efficient hybrid photoelectrodes for photoelectrochemical applications. A simple and cost-effective electropolymerization strategy to create hybrid organic-inorganic photoelectrodes based on two thiophene-based conjugated porous polymers (CPP-3TB and IEP-19) for enhanced solar energy conversion is used. These polymers, when integrated with TiO2 to form hybrid photoanodes, exhibit enhanced photopotentials and photocurrents compared to bare TiO2. This synergetic behavior is attributed to an increased visible light absorption, reduced charge transfer resistance, and minimized electron-hole recombination. In particular, detailed electrochemical and spectroscopic analyses, including electrochemical impedance spectroscopy and transient absorption spectroscopy, reveal that the hybrid systems' superior charge transport and longer photogenerated charge lifetimes contribute to their increased efficiency in solar energy conversion. Moreover, by comparing the structure and behavior of both hybrid systems, corner stone knowledge for the synthesis of CPPs to guide the construction of the future photoelectrochemical cells for solar energy conversion is offered.","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 6","pages":"2400623"},"PeriodicalIF":11.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12168630/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144318076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Edge-Localized Plasmonic Resonances in WS₂ Nanostructures from Electron Energy-Loss Spectroscopy. 基于电子能量损失谱的WS2纳米结构边缘定域等离子体共振。

IF 11.1

Small Science Pub Date : 2025-02-13 eCollection Date: 2025-05-01 DOI: 10.1002/smsc.202400558

Abel Brokkelkamp, Sabrya E van Heijst, Sonia Conesa-Boj

{"title":"Edge-Localized Plasmonic Resonances in WS2 Nanostructures from Electron Energy-Loss Spectroscopy.","authors":"Abel Brokkelkamp, Sabrya E van Heijst, Sonia Conesa-Boj","doi":"10.1002/smsc.202400558","DOIUrl":"10.1002/smsc.202400558","url":null,"abstract":"Localized plasmon resonances in 2D transition metal dichalcogenides (TMDs) offer a powerful means to enhance light-matter interactions at the nanoscale, making them ideal candidates for advanced optoelectronic applications. However, disentangling the complex plasmonic interactions in these materials, especially in the low-energy regime, presents significant challenges. Herein, localized plasmon resonances in chemical vapor deposition-grown tungsten disulfide (WS2) nanotriangles, using a combination of advanced spectral analysis and simulation techniques, is investigated. By combining non-negative matrix factorization with electron energy loss spectroscopy, distinct plasmonic modes to provide a comprehensive analysis of the plasmonic landscape of individual and stacked WS2 nanotriangles are identified and characterized. Furthermore, the dispersion relation of these localized plasmon resonances is quantified and their evolution across different WS2 triangular geometries is evaluated. Experimental characterization of plasmonic resonances in WS2 through dedicated numerical simulations based on the pygdm package is validated. The findings highlight the critical role of localized plasmon resonances in modulating the electronic and optical properties of WS2, offering new insights into the design and optimization of TMD-based devices for optoelectronic and nanophotonic applications.","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 5","pages":"2400558"},"PeriodicalIF":11.1,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12087782/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Computational Approaches for Designing Heterostructured Electrocatalysts. 设计异质结构电催化剂的计算方法。

IF 11.1

Small Science Pub Date : 2025-02-11 eCollection Date: 2025-05-01 DOI: 10.1002/smsc.202400544

Miyeon Kim, Kyu In Shim, Jeong Woo Han

{"title":"Computational Approaches for Designing Heterostructured Electrocatalysts.","authors":"Miyeon Kim, Kyu In Shim, Jeong Woo Han","doi":"10.1002/smsc.202400544","DOIUrl":"10.1002/smsc.202400544","url":null,"abstract":"Electrocatalysts for oxidation and reduction reactions are crucial for sustainable energy production and carbon reduction. While precious metal catalysts exhibit superior activity, reducing reliance on them is necessary for large-scale applications. To address this, transition metal-based catalysts are studied with strategies to enhance catalytic performance. One promising strategy is heterostructures, which integrate multiple materials to harness synergistic effects. Developing efficient heterostructured electrocatalysts requires understanding their intricate characteristics, which poses challenges. While in situ and operando spectroscopy provides insights, computational materials science is essential for capturing reaction mechanisms, analyzing the origins at the atomic scale, and efficiently exploring innovative heterostructures. Despite growing recognition of computational materials science, standardized criteria for these systems remain lacking. This review consolidates case studies to propose approaches for modeling and analyzing heterostructures. It categorizes heterostructure types into vertical, semivertical, and lateral, defines their characteristics, and propose insights into minimizing or exploiting strain effects from lattice mismatches. Furthermore, it summarizes computational analyses of heterostructure stability and activity across reactions, including oxygen evolution, hydrogen evolution, oxygen reduction, carbon dioxide reduction, nitrogen reduction, and urea oxidation. This review provides an overview to refine heterostructure designs and establish a framework for systematic modeling and analysis to develop efficient electrocatalysts.","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 5","pages":"2400544"},"PeriodicalIF":11.1,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12087785/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biohybrid Microrobots Based on Jellyfish Stinging Capsules and Janus Particles for In Vitro Deep-Tissue Drug Penetration. 基于水母刺痛胶囊和Janus颗粒的体外深层药物渗透生物混合微型机器人。

IF 11.1

Small Science Pub Date : 2025-02-11 eCollection Date: 2025-06-01 DOI: 10.1002/smsc.202400551

Sinwook Park, Noga Barak, Tamar Lotan, Gilad Yossifon

{"title":"Biohybrid Microrobots Based on Jellyfish Stinging Capsules and Janus Particles for In Vitro Deep-Tissue Drug Penetration.","authors":"Sinwook Park, Noga Barak, Tamar Lotan, Gilad Yossifon","doi":"10.1002/smsc.202400551","DOIUrl":"10.1002/smsc.202400551","url":null,"abstract":"Microrobots engineered from self-propelling active particles extend the reach of robotic operations to submillimeter dimensions and are becoming increasingly relevant for various tasks, such as manipulation of micro/nanoscale cargo, particularly targeted drug delivery. However, achieving deep-tissue penetration and drug delivery remains a challenge. This work develops a novel biohybrid microrobot consisting of jellyfish-stinging capsules, which act as natural nanoinjectors for efficient penetration and delivery, assembled onto an active Janus particle (JP). While microrobot transport and navigation is externally controlled by magnetic field-induced rolling, capsule loading onto the JP surface is controlled by electric field. Following precise navigation of the biohybrid microrobots to the vicinity of target tissues, the capsules are activated by a specific enzyme introduced to the solution, which then triggers tubule ejection and release of the preloaded molecules. Use of such microrobots for penetration of and delivery of the preloaded drug/toxin to targeted cancer spheroids and live Caenorhabditis elegans is demonstrated in vitro. The findings offer insights for future development of bioinspired microrobots capable of deep penetration and drug delivery. Future directions may involve encapsulation of various drugs within different capsule types for enhanced versatility. This study may also inspire in vivo applications involving deep tissue drug delivery.","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 6","pages":"2400551"},"PeriodicalIF":11.1,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12168594/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144318155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal Activation and Deactivation of Ni-Doped Ceria Catalysts in CO₂ Methanation. ni掺杂铈催化剂在CO2甲烷化中的热活化与失活。

IF 11.1

Small Science Pub Date : 2025-02-06 eCollection Date: 2025-05-01 DOI: 10.1002/smsc.202400540

Mathias Barreau, Davide Salusso, Jinming Zhang, Michael Haevecker, Detre Teschner, Anna Efimenko, Elisa Borfecchia, Kamil Sobczak, Spyridon Zafeiratos

{"title":"Thermal Activation and Deactivation of Ni-Doped Ceria Catalysts in CO2 Methanation.","authors":"Mathias Barreau, Davide Salusso, Jinming Zhang, Michael Haevecker, Detre Teschner, Anna Efimenko, Elisa Borfecchia, Kamil Sobczak, Spyridon Zafeiratos","doi":"10.1002/smsc.202400540","DOIUrl":"10.1002/smsc.202400540","url":null,"abstract":"Discovered almost 130 years ago by P. Sabatier, CO2 hydrogenation to methane (CO2 methanation) is presently attracting attention as one of the most promising methods for storing intermittent renewable energy in the form of chemical fuels. Ni particles supported by CeO2 constitute a very effective, reliable, and reasonably priced catalyst for CO2 methanation. Recently a new type of CO2 methanation catalyst, consisting of cerium oxide (ceria) nanoparticles doped with nickel (NiCeO x ) in a specific square-planar configuration with an extremely high-Ni mass-specific activity and almost 100% CH4 selectivity, was reported. Here, a 50% enhancement in the CO2 conversion of the NiCeO x catalyst by carefully adjusting the calcination temperature is demonstrated. Notably, thermal aging at 600 °C enhances methanation performance by partially exsolving Ni to the surface, while higher temperatures (750 °C) lead to larger Ni particles, increased CO production, and surface carbon deposition. Several in situ and operando characterization methods are employed to correlate the thermal activation and deactivation of the catalyst with its nanoscale characteristics. Apart from their clear implications for the design of next-generation Ni-based CO2 methanation catalysts, these findings significantly enhance understanding of the complex interplay and nature of various surface sites involved in CO2 hydrogenation.","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 5","pages":"2400540"},"PeriodicalIF":11.1,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12087771/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinetic Pathway Control in the Synthesis of Well-Defined Ruthenium Coordination Oligomers. 定义明确的钌配位低聚物合成的动力学途径控制。

IF 11.1

Small Science Pub Date : 2025-02-03 eCollection Date: 2025-05-01 DOI: 10.1002/smsc.202400504

Tilman Schneider, Florian Seebauer, Frank Würthner, Florian Beuerle

{"title":"Kinetic Pathway Control in the Synthesis of Well-Defined Ruthenium Coordination Oligomers.","authors":"Tilman Schneider, Florian Seebauer, Frank Würthner, Florian Beuerle","doi":"10.1002/smsc.202400504","DOIUrl":"10.1002/smsc.202400504","url":null,"abstract":"Ruthenium complexes with 2,2'-bipyridine-6,6'-dicarboxylate (bda) ligands have emerged as highly potent catalysts for water oxidation. In this context, the accumulation of active Ru centers in macrocyclic arrays or coordination oligomers and polymers has proven to be very beneficial for an enhanced stability under operating conditions and to facilitate surface adhesion in heterogeneous systems. For a better insight into structure-activity relationships though, well-defined systems with a precise control over stoichiometry and constitution are highly desired. Herein, the synthesis and characterization of a series of structurally precise and monodisperse linear coordination oligomers [(Ru(bda)) n L n-1 pic 2] (n = 4 or 5, L = 4,4'-bipyridine or 1,4-bis-(pyridine-4-yl)benzene derivatives, pic = 4-picoline), in excellent purity and yields are reported. Based on detailed mechanistic investigations, a complex network of interconnected and competing reactions is proposed that fully explains both the high overall turnover and the kinetic pathway selection between alternative endcapping and dissociation-elongation sequences.","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"5 5","pages":"2400504"},"PeriodicalIF":11.1,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12087777/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0