IF 13.3 2区材料科学

Small Pub Date : 2025-05-09 DOI: 10.1002/smll.202501157

Qiong Wu, Lirong Zhao, Longfei Tan, Xiangling Ren, Changhui Fu, Zengzhen Chen, Guihua Jiang, Lourdes Farrugia, Xiaohe Xu, Xianwei Meng

{"title":"Microwave-Responsive AlEu-MOFs Potentiate NLRP3-Mediated Pyroptosis via a “Triple Initiating” Tactic for Breast Cancer Microwave-Immunotherapy","authors":"Qiong Wu, Lirong Zhao, Longfei Tan, Xiangling Ren, Changhui Fu, Zengzhen Chen, Guihua Jiang, Lourdes Farrugia, Xiaohe Xu, Xianwei Meng","doi":"10.1002/smll.202501157","DOIUrl":"https://doi.org/10.1002/smll.202501157","url":null,"abstract":"Microwave thermotherapy is favored in clinical practice for breast cancer conservation strategies due to its minimally invasive characteristic. Nevertheless, the immunosuppressive tumor microenvironment (TME) significantly attenuates the therapeutic efficacy of anti-tumor immune response, posing challenges in effectively preventing tumor recurrence and metastasis. Pyroptosis, a recently identified form of programmed cell death triggered by inflammasomes, presents unique inflammatory and immunogenic properties that hold promise for cancer immunotherapy. Herein, microwave-responsive AlEu-MOFs are designed and synthesized to boost NLRP3-mediated pyroptosis via a “Triple Initiating” tactic for breast cancer microwave-immunotherapy. The potent microwave thermal effect of AEM facilitates the up-regulation of HSP90, thereby initiating NLRP3 expression. Concurrently, it induces mitochondrial dysfunction to generate substantial quantities of ROS, further enhancing NLRP3 expression to achieve a targeted amplification of microwave thermotherapy-induced pyroptosis. Simultaneously, the microwave-responsive directed anchoring release of highly active metal ions promotes the activation of the NLRP3 inflammasome jointly, ultimately inducing high-efficiency pyroptosis. This innovative “2M” (materials and methods) dual-pronged strategy not only significantly inhibits primary tumor proliferation, but also further impedes distant tumor progression and lung metastasis. This work provides a novel strategy to accurately and effectively achieve pyroptosis and offers a new approach to overcome the obstacles of clinical microwave thermotherapy.","PeriodicalId":228,"journal":{"name":"Small","volume":"118 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927008","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

Hybrid energy harvester integrating ZnO piezoelectric nanogenerator with perovskite solar cell demonstrating the piezo-phototronic effect 结合ZnO压电纳米发电机和钙钛矿太阳能电池的混合能量采集器，展示了压电光电子效应

IF 17.6 1区材料科学

Nano Energy Pub Date : 2025-05-09 DOI: 10.1016/j.nanoen.2025.111120

Yuan Zhang, Xuan Li, Qinrong He, Madsar Hameed, Joe Briscoe

{"title":"Hybrid energy harvester integrating ZnO piezoelectric nanogenerator with perovskite solar cell demonstrating the piezo-phototronic effect","authors":"Yuan Zhang, Xuan Li, Qinrong He, Madsar Hameed, Joe Briscoe","doi":"10.1016/j.nanoen.2025.111120","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.111120","url":null,"abstract":"As portable devices and wireless sensors become more ubiquitous and power hungry, new methods are required to power them to avoid an overreliance on batteries. Materials that combine multiple functionalities, such as semiconducting and piezoelectric properties, offer an excellent opportunity to harvest energy from multiple sources in a single device. As such, we report a hybrid energy harvester (HEH) combining a piezoelectric nanogenerator and a perovskite solar cell to simultaneously harvest mechanical and solar energy. The HEH exhibited the piezo-phototronic effect, where strain-induced shifts in the energy bands of ZnO nanorods modulated the photovoltaic (PV) output under mechanical deformation. The output of the HEH under light and oscillation conditions combined PV variations driven by the piezo-phototronic effect and piezoelectric signals generated by the ZnO nanorods. Furthermore, the piezoelectric output showed distinct variations between dark and illuminated conditions, attributed to differences in the electrical conductivity of ZnO and perovskite, which influenced charge screening. Additionally, morphological variations in ZnO nanorods were found to significantly impact performance. Overall, these findings provide guidance for optimizing nanostructures and device designs to enhance multi-source energy harvesting efficiency and further explore the piezo-phototronic effect.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"10 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Peptide-Decorated Liposomes Enhance Fungal Targeting and Antifungal Drug Delivery 肽修饰脂质体增强真菌靶向和抗真菌药物传递

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-05-09 DOI: 10.1002/adfm.202508570

Veronica LaMastro, Dominique Walker, Joanne Liu, Tobias Meng-Saccoccio, Anita Shukla

{"title":"Peptide-Decorated Liposomes Enhance Fungal Targeting and Antifungal Drug Delivery","authors":"Veronica LaMastro, Dominique Walker, Joanne Liu, Tobias Meng-Saccoccio, Anita Shukla","doi":"10.1002/adfm.202508570","DOIUrl":"https://doi.org/10.1002/adfm.202508570","url":null,"abstract":"Candida infections are a clinical challenge due to a limited repertoire of antifungal drugs, biofilm development, and antifungal drug resistance. Fungi-targeted liposomes can improve antifungal drug solubility and delivery while reducing toxicity by enhancing fungal cell interaction. Here, liposomes that encapsulate the antifungal drug, posaconazole (POS), are decorated with the peptide, penetratin (Pen). Liposome-fungal cell interaction increases significantly from ∼50% to >80% upon Pen conjugation with both C. albicans and C. auris. Pen-decorated liposomes containing POS inhibit planktonic C. albicans and C. auris at liposome concentrations up to 8× lower than non-Pen-decorated liposomes, suggesting enhanced POS delivery due to increased fungal targeting. Furthermore, Pen-decorated liposomes inhibit C. albicans and C. auris biofilm formation at POS concentrations that are up to 1300× lower than free POS. Finally, Pen-decorated liposomes exhibit promising prophylactic activity in an intradermal C. albicans murine infection model, reducing fungal burden by ∼60% compared to non-targeting POS-loaded liposomes. Overall, Pen-decorated, POS-loaded liposomes expand the antifungal drug repertoire against Candida spp. and serve as a platform technology to improve the treatment of fungal infections.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"37 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Extending Shelf-life of Precursor Solutions and Inhibiting Light-indued Oxidation of Iodides for Achieving Highly Efficient and Durable Perovskite Solar Cells 延长前驱体溶液的保质期和抑制碘化物的光诱导氧化以实现高效耐用的钙钛矿太阳能电池

IF 11.9 2区材料科学

Journal of Materials Chemistry A Pub Date : 2025-05-09 DOI: 10.1039/d5ta01570g

Weijian Tang, Yu Chen, Ruisen Shi, Yihui Wu, Jingquan Zhang

{"title":"Extending Shelf-life of Precursor Solutions and Inhibiting Light-indued Oxidation of Iodides for Achieving Highly Efficient and Durable Perovskite Solar Cells","authors":"Weijian Tang, Yu Chen, Ruisen Shi, Yihui Wu, Jingquan Zhang","doi":"10.1039/d5ta01570g","DOIUrl":"https://doi.org/10.1039/d5ta01570g","url":null,"abstract":"Durable shelf-life of precursor solutions are crucial for obtaining high-quality and stable perovskite films, which significantly affect the efficiency and stability of perovskite solar cells (PSCs). However, iodides in perovskites are easily oxidized by oxygen, especially under light exposure, leading to reducing the shelf-life of precursor solutions and compromising perovskite films. Herein, we introduce sodium thiosulfate (ST) into perovskite inks to in-situ tailor the crystallization of perovskites and suppress oxidation of iodides. As expected, this ST strategy effectively suppresses the iodide oxidation, inhibits phase transition and separation, thereby obtaining high-quality perovskite films with enhanced high crystallinity and reduced non-radiative recombination. Interestingly, the shelf-life of precursor solutions was extended over 60 days, and no phase transition can be found in perovskite films under 60 days of 1 sun light exposure. As a result, the champion ST-treated device achieves a PCE of 25.25% with a minimal voltage deficit of 0.35 V. More importantly, the unencapsulated devices demonstrate excellent long-term storage, thermal and light-soaking stability, which deliver 93 %, 85 % and 85 % of their original efficiencies after ageing, respectively. This work provides an effective approach to extend the shelf-life of precursor solutions and improve the efficiency and operational stability of PSCs.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":"118 1","pages":""},"PeriodicalIF":11.9,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927115","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

Charge transfer-promoting 0D/2D CdS/Ni-BDC heterojunction for efficient photocatalytic hydrogen production 电荷转移促进0D/2D CdS/Ni-BDC异质结高效光催化制氢

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-05-09 DOI: 10.1016/j.apsusc.2025.163467

Shuqin Yuan, Yang Guo, Xinnian Xia, Shuaijun Pan

{"title":"Charge transfer-promoting 0D/2D CdS/Ni-BDC heterojunction for efficient photocatalytic hydrogen production","authors":"Shuqin Yuan, Yang Guo, Xinnian Xia, Shuaijun Pan","doi":"10.1016/j.apsusc.2025.163467","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.163467","url":null,"abstract":"The construction of photo catalysts with high stability, strong light absorption and charge transfer capabilities is of great significance for the industrial development of photocatalytic H2 production technology. Here, we successfully synthesized 0D/2D CdS/Ni-BDC composites by in-situ modification of CdS quantum dots (QDs) on Ni-BDC nanosheets. Notably, the optimized composite demonstrates exceptional hydrogen production activity, achieving a rate of 32.08 mmol g-1 h−1 under simulated sunlight irradiation, which is approximately 21.53 times higher than that of pristine Ni-BDC. Under monochromatic light at 365 nm, CdS/Ni-BDC-100 has a remarkable apparent quantum efficiency (AQE) of 26.4 %. The loading of photosensitive CdS QDs enhanced the visible light absorption of the composites. Moreover, the formation of Z-scheme heterojunction within CdS/Ni-BDC was confirmed via band structure analysis and density functional theory (DFT) calculations. The heterojunction facilitated the separation and transfer of carriers via the internal electric field, thereby achieving a significant enhancement of the photocatalytic H2 production performance. This study provides a new approach for the design and development of efficient H2 production photo catalysts.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"49 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927200","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

Advancing the photoelectric performance of tube PECVD-based tunnel oxide passivating contact silicon solar cells by regulating the activated phosphorus concentration in polysilicon 通过调节多晶硅中活性磷的浓度来提高管状pecvd隧道氧化物钝化接触硅太阳能电池的光电性能

IF 6.3 2区材料科学

Solar Energy Materials and Solar Cells Pub Date : 2025-05-09 DOI: 10.1016/j.solmat.2025.113696

Fenghe Han , Mingdun Liao , Na Lin , Shuo Deng , Ning Song , Weichuang Yang , Zunke Liu , Sheshicheng Chen , Haojiang Du , Wei Liu , Fuping Zhao , Wen Zhang , Yiren Cai , Zhenhai Yang , Yuheng Zeng , Jichun Ye

{"title":"Advancing the photoelectric performance of tube PECVD-based tunnel oxide passivating contact silicon solar cells by regulating the activated phosphorus concentration in polysilicon","authors":"Fenghe Han , Mingdun Liao , Na Lin , Shuo Deng , Ning Song , Weichuang Yang , Zunke Liu , Sheshicheng Chen , Haojiang Du , Wei Liu , Fuping Zhao , Wen Zhang , Yiren Cai , Zhenhai Yang , Yuheng Zeng , Jichun Ye","doi":"10.1016/j.solmat.2025.113696","DOIUrl":"10.1016/j.solmat.2025.113696","url":null,"abstract":"<div><div>In the current market, the tube plasma-enhanced chemical vapor deposition (PECVD) has become one of the dominant technologies for the preparation of SiOx and doped polysilicon layers in tunnel oxide passivating contact (TOPCon) solar cells (SCs). The activated phosphorus concentration in polysilicon layers prepared using tube PECVD significantly influences the optical and electrical properties of TOPCon structures. In this work, we effectively control the activated phosphorus concentration in polysilicon through adjusting PH3 flow rates and investigate the effects of the activated phosphorus concentration on the photoelectric performance of TOPCon SCs, including sheet resistivity, mobility, crystallinity, and parasitic absorption. Specifically, our results show that optimizing the activated phosphorus concentration leads to relatively high crystallinity, and moderate sheet resistivity, mobility, and parasitic absorption. Consequently, a high activated phosphorus concentration with a PH3 flow rate of 1200 sccm achieves a balance in optical and electrical performance, yielding a relatively high fill factor and short-circuit current density of TOPCon SCs. Based on these results, the average efficiency of industrial screen-printing n-type TOPCon SC increases by 0.17% compared to the baseline sample for 800 sccm conditions on the production line, providing guidance for achieving high-efficiency TOPCon SCs.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"290 ","pages":"Article 113696"},"PeriodicalIF":6.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928158","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 bridge crosslinking and nano-ZnO synergistically construct fluorine/silicon-free multifunctional cotton fabric coatings 分子桥交联和纳米氧化锌协同构建无氟/无硅多功能棉织物涂料

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-05-09 DOI: 10.1016/j.porgcoat.2025.109366

Chunyuan Jiang, Xinrui Zhang, Haizhen Ji, Jie Zhang, Xingjian Li, Shoufang Xu, Faqiang Li, Yinwen Li

{"title":"Molecular bridge crosslinking and nano-ZnO synergistically construct fluorine/silicon-free multifunctional cotton fabric coatings","authors":"Chunyuan Jiang, Xinrui Zhang, Haizhen Ji, Jie Zhang, Xingjian Li, Shoufang Xu, Faqiang Li, Yinwen Li","doi":"10.1016/j.porgcoat.2025.109366","DOIUrl":"10.1016/j.porgcoat.2025.109366","url":null,"abstract":"<div><div>Fluorine/silicon-free waterborne polyacrylate/nano-ZnO composite cotton fabric coatings (EPSAs) were developed to address the potential environmental and health risks posed by traditional fluorine-containing finishing agents. A molecular bridge constructed by 1,6-hexanediol diacrylate (HDDA) formed a crosslinked network, promoting synergistic directional alignment of tert-butyl and long-chain alkyl groups to create a low-surface-energy chemical hydrophobic barrier. Meanwhile, the polyvinyl alcohol (PVA) modified nano-ZnO not only improved the dispersibility of nano-ZnO, but also enhanced its mechanical stability through the hydrogen bonding interaction and interpenetrating network structure between PVA molecular chains and the polyacrylate main chains. Additionally, the PVA-modified nano-ZnO and polyacrylate jointly constructed a micro-nano rough structure on the fiber surface. This effectively inhibited water adsorption and enhanced impermeability. This hierarchical synergistic effect enabled the optimized EPSA4 coating membrane to achieve 5.4 % water absorption over 7 d while the coated cotton fabric demonstrated a 128° water contact angle with 2.5 h effective water impermeability that remained stable after 50 washing cycles. Additionally, the coating significantly enhanced the cotton fabric's UPF value from 30.5 to 93.3 and achieved antimicrobial efficiencies of 99.98 % against Escherichia coli and 99.95 % against Staphylococcus aureus. By retaining their inherent breathability, this innovative coating system provided cotton fabrics with long-term hydrophobicity, antimicrobial functionality, and UV resistance, offering an environmentally sustainable multifunctional textile solution for applications including medical protective garments, outdoor technical textiles, and other sectors requiring integrated performance and eco-friendly characteristics.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"206 ","pages":"Article 109366"},"PeriodicalIF":6.5,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929009","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

Architecting new materials with strength-ductility synergy through interphase engineering 通过相间工程构建强度-延性协同的新材料

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2025-05-09 DOI: 10.1016/j.jmst.2025.02.092

Zhenbo Zhang, Emmanouil Stavroulakis, David Stewart, Michael Preuss

{"title":"Architecting new materials with strength-ductility synergy through interphase engineering","authors":"Zhenbo Zhang, Emmanouil Stavroulakis, David Stewart, Michael Preuss","doi":"10.1016/j.jmst.2025.02.092","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.02.092","url":null,"abstract":"Conventional strategies to strengthen alloys are usually accompanied by drastic sacrifice in ductility, which is known as the strength-ductility trade-off. New metallurgical processing approaches are required to defeat this longstanding dilemma. Here we report a novel solid-state powder manufacturing route to overcome this challenge enabling the architecting of a complex multiphase constituent composite using readily available metal powder as a feedstock. The materials design philosophy is successfully verified in a system mixing conventional austenitic stainless steel and ferritic steel powder and consolidating it by hot isostatic pressing. Significant strengthening and work hardenability are achieved at no expense of ductility compared to the ferrite and austenite on their own. Such extraordinary strength-ductility synergy is attributed to the well-architected compositional gradients across different phases resulting in soft and hard regions at the scale of the original powder without sharp interfaces. Accordingly, plasticity progresses from soft to hard regions during mechanical loading, which is the key to mitigating the deformation incompatibility and enabling remarkable ductility. Our study provides a new concept for materials design with synergistic properties that used to be trade-offs in conventional materials, which is applicable to a broad range of material systems with unprecedented multifunctionality.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"20 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143926658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Bulk Assembly of Intrachain Folded Aromatic Polyamides Facilitating Through-Space Charge Transport Phenomenon 链内折叠芳香族聚酰胺的体组装促进空间电荷传输现象

IF 13.3 2区材料科学

Small Pub Date : 2025-05-09 DOI: 10.1002/smll.202503960

Subhendu Samanta, Ramkumar K, Ghulam Mohmad, Kiran Bansal, Sabyasachi Mukhopadhyay, Raj Kumar Roy

{"title":"Bulk Assembly of Intrachain Folded Aromatic Polyamides Facilitating Through-Space Charge Transport Phenomenon","authors":"Subhendu Samanta, Ramkumar K, Ghulam Mohmad, Kiran Bansal, Sabyasachi Mukhopadhyay, Raj Kumar Roy","doi":"10.1002/smll.202503960","DOIUrl":"https://doi.org/10.1002/smll.202503960","url":null,"abstract":"Significant progress has been made in replicating the secondary structures of biomolecules, but more work is needed to mimic their higher-order structures essential for complex functions. This study entails designing periodically grafted aromatic polyamides to explore the possibility of mimicking higher-order structures and related functions. The incompatibility between aromatic hydrocarbon and grafted polyethylene glycol (PEG) chains is utilized for immiscibility-driven phase segregation and their bulk assemblies. Additionally, these polyamides can induce an intrachain folded structure, promoting an organized arrangement of π-surfaces in phase-segregated domains, distinguishing this research from conventional polymer phase separation. Notably, the incorporation of aromatic guest molecules results in significant enhancements in the structural coherence of these aromatic polyamides. Like structural characterizations, the host–guest complex exhibits superior charge transport potential across the ordered π-domains than the host polymer alone. The vertical charge transport setup yields a current density of ≈10−4 A cm−2, while the lateral currents in a horizontal setup (≈10−10 A) are insignificant, indicating a preferential alignment of π-domains within the bulk structure. Additionally, substrate surface chemistry influences the orientation of the π-folded domains, with hydrophilic glass substrates resulting in higher lateral currents (≈10−5 A) compared to unmodified glass, highlighting the potential of these materials for electronic applications.","PeriodicalId":228,"journal":{"name":"Small","volume":"12 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143926744","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

Tetracyanidoborates of Divalent Eu and Yb 3D Metal–Organic Frameworks with Cubic Structure. Thermochromic Luminescence and Slow Relaxation of Magnetization of Eu[B(CN)4]2 具有立方结构的三价Eu和Yb三维金属有机骨架的四氰硼酸酯。Eu[B(CN)4]的热致变色发光及慢弛豫磁化研究[j]

IF 8.6 2区材料科学

Chemistry of Materials Pub Date : 2025-05-09 DOI: 10.1021/acs.chemmater.4c03507

Vasily A. Ilichev, Anton F. Rogozhin, Tatyana V. Balashova, Svetlana K. Polyakova, Nikolay N. Efimov, Pavel N. Vasilev, Elena A. Ugolkova, Eduard Bernhardt, Roman V. Rumyantcev, Georgy K. Fukin, Mikhail N. Bochkarev

{"title":"Tetracyanidoborates of Divalent Eu and Yb 3D Metal–Organic Frameworks with Cubic Structure. Thermochromic Luminescence and Slow Relaxation of Magnetization of Eu[B(CN)4]2","authors":"Vasily A. Ilichev, Anton F. Rogozhin, Tatyana V. Balashova, Svetlana K. Polyakova, Nikolay N. Efimov, Pavel N. Vasilev, Elena A. Ugolkova, Eduard Bernhardt, Roman V. Rumyantcev, Georgy K. Fukin, Mikhail N. Bochkarev","doi":"10.1021/acs.chemmater.4c03507","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c03507","url":null,"abstract":"Tetracyanidoborates of divalent lanthanides, Ln[B(CN)4]2·THF (Ln = Eu (1), Yb (2)), were obtained by a salt metathesis reaction of lanthanide diiodides and ammonium tetracyanidoborate. Unlike known tetracyanidoborates of alkaline-earth metals and trivalent lanthanides, compounds 1 and 2 are 3D metal–organic frameworks (MOFs) with a cubic structure. MOF 1 demonstrates air stability and thermal stability up to 400 °C. At 298 K, 1 shows bright broadband photoluminescence (PL) of Eu2+ ions that peaked at 650 nm with 80% absolute quantum yield (QY). When the temperature increases from 77 to 500 K, the maximum of PL spectra of 1 exhibit a blue shift from 13900 to 16350 cm–1. Quantum chemical calculations and X-ray diffraction studies of 1 at 100 and 390 K reveal that observed PL thermochromism is accompanied by changes in the geometry of the Eu–N–C fragment and electronic structure of the [B(CN)4]− anion. Europium-containing MOF 1 exhibits slow relaxation of magnetization at temperatures up to 4 K. The magnetic relaxation dynamics of MOF 1 is dominated by an Orbach-like mechanism with an effective energetic barrier estimated as 16.7 K. Removal of THF from the pores of MOF 1 leads to the same changes in structure and luminescent behavior as heating but significantly reduces its stability in air. The singularity of structural, magnetic, and luminescent behavior, as well as extraordinary stability of europium MOF 1, are due to specifics in europium–tetracyanidoborate bonding. The reported tetracyanidoborates 1 and 2 are the porous 3D MOFs based on divalent lanthanide ions: europium and ytterbium.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"118 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143926896","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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