The interactions between solid quantum dots (QDs) are weak as the excitons in QDs are difficult to be dissolved into electrons and holes, which limits the performance of QDs based photodetector. Herein, through putting QDs inside the water, it is intriguingly found that excitons are dissolved into electrons and holes by the interaction between QDs and water molecules, which further contribute to the formation of long-range electron/hole transport channels within the water. At zero voltage bias, a transient photo-polarized current is repeatedly produced, the specific responsivity and detectivity of liquid-based photodetector with molybdenum disulfide (MoS2) QDs aqueous suspension can reach 188.1 mA W−1 and 1.164 × 1010 Jones with 820 nm illumination, respectively. The specific spectra of photodetectors can be promoted by selected QDs with different absorption peaks. Actually, the responsivity of liquid-based photodetector with cadmium selenide (CdSe) QDs exhibits the most significant enhancement effect at the peak of exciton absorption wavelength of QDs, as much more excitons in QDs can be dissolved into electrons and holes. It is anticipated that the ability to dissolve excitons in QDs and form conducting channels by dynamic construction of water molecules will bring possibilities for high-performance optoelectronic devices across a wide range of application scenarios.
{"title":"Liquid Water Molecular Connected Quantum Dots for Self-Driven Photodetector","authors":"Zhihao Qian, Minhui Yang, Shisheng Lin","doi":"10.1002/adfm.202420182","DOIUrl":"https://doi.org/10.1002/adfm.202420182","url":null,"abstract":"The interactions between solid quantum dots (QDs) are weak as the excitons in QDs are difficult to be dissolved into electrons and holes, which limits the performance of QDs based photodetector. Herein, through putting QDs inside the water, it is intriguingly found that excitons are dissolved into electrons and holes by the interaction between QDs and water molecules, which further contribute to the formation of long-range electron/hole transport channels within the water. At zero voltage bias, a transient photo-polarized current is repeatedly produced, the specific responsivity and detectivity of liquid-based photodetector with molybdenum disulfide (MoS<sub>2</sub>) QDs aqueous suspension can reach 188.1 mA W<sup>−1</sup> and 1.164 × 10<sup>10</sup> Jones with 820 nm illumination, respectively. The specific spectra of photodetectors can be promoted by selected QDs with different absorption peaks. Actually, the responsivity of liquid-based photodetector with cadmium selenide (CdSe) QDs exhibits the most significant enhancement effect at the peak of exciton absorption wavelength of QDs, as much more excitons in QDs can be dissolved into electrons and holes. It is anticipated that the ability to dissolve excitons in QDs and form conducting channels by dynamic construction of water molecules will bring possibilities for high-performance optoelectronic devices across a wide range of application scenarios.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"205 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987491","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}
Li Tian, Haodong Gu, Qiuqi Zhang, Xiao You, Mengmeng Wang, Feiyan Cai, Shaoming Dong, Jinshan Yang
Aerogel and its phase change composites are two reliable strategies for thermal management. However, the inherent instability of these porous structures hinders their further development and application. Herein, a robust boron nitride metamaterial (BNM) enhanced by the negative Poisson's ratio effect is proposed for dual thermal management strategies obtained by the sacrificial template method. The negative Poisson's ratio confers enhanced structural stability to the BNMs. On the one hand, the BNM exhibits resilience (5% residual strain after 100 cycles), temperature invariance, fire resistance, and thermal superinsulation at high temperatures (102.83 mW·m−1·K−1 at 1000 °C). On the other hand, the robust BNM overcomes structural deformation during the vacuum impregnation process to obtain isotropic phase change composites, achieving efficient thermal conductivity (1 W·m−1·K−1 with 4 vol% BNM) and thermal conductivity enhancement effect of 97%. These composites effectively encapsulate phase change materials, preventing liquefaction and leakage. This approach offers a reliable solution for simultaneously improving both the thermal management strategies.
{"title":"Robust Boron Nitride Metamaterials with Negative Poisson's Ratio for Dual Thermal Management Strategies","authors":"Li Tian, Haodong Gu, Qiuqi Zhang, Xiao You, Mengmeng Wang, Feiyan Cai, Shaoming Dong, Jinshan Yang","doi":"10.1002/adfm.202418111","DOIUrl":"https://doi.org/10.1002/adfm.202418111","url":null,"abstract":"Aerogel and its phase change composites are two reliable strategies for thermal management. However, the inherent instability of these porous structures hinders their further development and application. Herein, a robust boron nitride metamaterial (BNM) enhanced by the negative Poisson's ratio effect is proposed for dual thermal management strategies obtained by the sacrificial template method. The negative Poisson's ratio confers enhanced structural stability to the BNMs. On the one hand, the BNM exhibits resilience (5% residual strain after 100 cycles), temperature invariance, fire resistance, and thermal superinsulation at high temperatures (102.83 mW·m<sup>−1</sup>·K<sup>−1</sup> at 1000 °C). On the other hand, the robust BNM overcomes structural deformation during the vacuum impregnation process to obtain isotropic phase change composites, achieving efficient thermal conductivity (1 W·m<sup>−1</sup>·K<sup>−1</sup> with 4 vol% BNM) and thermal conductivity enhancement effect of 97%. These composites effectively encapsulate phase change materials, preventing liquefaction and leakage. This approach offers a reliable solution for simultaneously improving both the thermal management strategies.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"29 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987697","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}
Rapid kinetics and stable atom configuration of the catalysts are essential and greatly sought after for bifunctional oxygen reactions and energy conversion devices, but remain unsatisfactory. Herein, the Se dual atoms structure consisting of the periodically arranged Se-P-Se configurations within graphitic nitrogen carbon framework (P-Se dual atoms-NC) is constructed by P directionally mediated single atoms deposition strategy. The in situ/ex situ experiments combining the theoretical calculations reveal that both the inter-site distance effect of the adjacent Se atoms in the NC and the Se-P binding effect endow P-Se dual atoms-NC with a stable atom configuration and ultra-durable lifespan, and the locally polarized electronic micro-environment built by P 2p-Se 3d-C 2p orbital hybridization and the electrons transfer significantly promotes H2O-O2 coupling, boosts the adsorption/desorption of O-intermediates and accelerates the electron transport kinetics. Moreover, the adjacent Se atoms with a periodically arranged structure could provide more sites for the absorption and conversion of reactants. Thus, the as-prepared catalyst exhibits the top-level bifunctional activity with an ultra-low potential difference (ΔE) of 0.58 V and delivers the outstandingly low-temperature specific capacity of 796.41 mAh gZn−1 and the ultra-durable lifespan over 1000 h for assembled zinc-air batteries at −40 °C.
{"title":"Phosphorus-Mediated Selenium Dual Atoms for Bifunctional Oxygen Reactions and Long-Life Low-Temperature Energy Conversion","authors":"Lingzhi Xia, Jianhua Zhang, Pengfei Yan, Kai-Ling Zhou, Yuhong Jin, Xiaoxing Ke, Jingbin Liu, Hao Wang","doi":"10.1002/adfm.202423476","DOIUrl":"https://doi.org/10.1002/adfm.202423476","url":null,"abstract":"Rapid kinetics and stable atom configuration of the catalysts are essential and greatly sought after for bifunctional oxygen reactions and energy conversion devices, but remain unsatisfactory. Herein, the Se dual atoms structure consisting of the periodically arranged Se-P-Se configurations within graphitic nitrogen carbon framework (P-Se dual atoms-NC) is constructed by P directionally mediated single atoms deposition strategy. The in situ/ex situ experiments combining the theoretical calculations reveal that both the inter-site distance effect of the adjacent Se atoms in the NC and the Se-P binding effect endow P-Se dual atoms-NC with a stable atom configuration and ultra-durable lifespan, and the locally polarized electronic micro-environment built by P 2<i>p</i>-Se 3<i>d</i>-C 2<i>p</i> orbital hybridization and the electrons transfer significantly promotes H<sub>2</sub>O-O<sub>2</sub> coupling, boosts the adsorption/desorption of O-intermediates and accelerates the electron transport kinetics. Moreover, the adjacent Se atoms with a periodically arranged structure could provide more sites for the absorption and conversion of reactants. Thus, the as-prepared catalyst exhibits the top-level bifunctional activity with an ultra-low potential difference (Δ<i>E</i>) of 0.58 V and delivers the outstandingly low-temperature specific capacity of 796.41 mAh g<sub>Zn</sub><sup>−1</sup> and the ultra-durable lifespan over 1000 h for assembled zinc-air batteries at −40 °C.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"8 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987494","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}
Crafting a sustainable non-aqueous electrolyte is paramount in the pursuit of high-voltage lithium batteries that exhibit exceptional performance. Traditional carbonate-based electrolytes encounter hurdles in maintaining electrochemical stability due to unstable interphases, as well as continuous degradation of the electrolyte itself. Herein, based on heterogeneous doping, a colloidal electrolyte with multiple functions via simple integrating methyl-encapsulated fumed silica (MFS) into a conventional carbonate-based electrolyte effectively addresses the aforementioned challenges. The produced colloidal electrolyte endowed with unexpected self-purification capabilities effectively eliminates HF and H2O, consequently enhancing stability of the electrolyte, interphase, and electrode. Furthermore, MFS induces a weakly solvated Li+ structure that is heterogeneously doped into the original solvation matrix and contributes to the formation of tailored and stable electrode/electrolyte interphases for both anode and cathode. Using such electrolyte, Li||LiCoO2 batteries demonstrate capacity retentions of 83.6% and 95.4% within 3000 and 1000 cycles at charging voltages of 4.4 and 4.5 V, respectively. Remarkably, with addition of 2000 ppm H2O in this electrolyte, cells can be cycled stably over 400 cycles with a capacity retention of 88.6%. This simple and effective electrolyte engineering strategy has the sustainability to significantly advance the development of highly stable high-voltage lithium batteries.
{"title":"Heterogeneous Doping via Methyl-Encapsulated Fumed Silica Enabling Weak Solvated and Self-Purified Electrolyte in Long-Term High-Voltage Lithium Batteries","authors":"Jinwei Zhou, Siyao Wu, Fulu Chu, Ziang Jiang, Feixiang Wu","doi":"10.1002/adfm.202423742","DOIUrl":"https://doi.org/10.1002/adfm.202423742","url":null,"abstract":"Crafting a sustainable non-aqueous electrolyte is paramount in the pursuit of high-voltage lithium batteries that exhibit exceptional performance. Traditional carbonate-based electrolytes encounter hurdles in maintaining electrochemical stability due to unstable interphases, as well as continuous degradation of the electrolyte itself. Herein, based on heterogeneous doping, a colloidal electrolyte with multiple functions via simple integrating methyl-encapsulated fumed silica (MFS) into a conventional carbonate-based electrolyte effectively addresses the aforementioned challenges. The produced colloidal electrolyte endowed with unexpected self-purification capabilities effectively eliminates HF and H<sub>2</sub>O, consequently enhancing stability of the electrolyte, interphase, and electrode. Furthermore, MFS induces a weakly solvated Li<sup>+</sup> structure that is heterogeneously doped into the original solvation matrix and contributes to the formation of tailored and stable electrode/electrolyte interphases for both anode and cathode. Using such electrolyte, Li||LiCoO<sub>2</sub> batteries demonstrate capacity retentions of 83.6% and 95.4% within 3000 and 1000 cycles at charging voltages of 4.4 and 4.5 V, respectively. Remarkably, with addition of 2000 ppm H<sub>2</sub>O in this electrolyte, cells can be cycled stably over 400 cycles with a capacity retention of 88.6%. This simple and effective electrolyte engineering strategy has the sustainability to significantly advance the development of highly stable high-voltage lithium batteries.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"22 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987492","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}
High-performance deep ultraviolet (DUV) spectroscopy is crucial in driving innovations for biomedical research, clinical diagnosis, and material science. DUV resonant nanostructures have shown capabilities for significantly improving spectroscopy sensitivity. However, they encounter significant challenges in practical applications, including instability due to oxidation and light-induced damage, and the strong photoluminescent noise background from their constituent materials. An efficient and robust DUV spectroscopy platform based on the polaritonic properties in all-dielectric silicon (Si) metasurfaces is proposed. Unlike conventional dielectric metasurfaces that rely on Mie-type modes, this approach leverages the polaritonic resonances in Si nanostructures—a striking yet underexplored property driven by interband transitions in the DUV regime—for nanophotonic sensing. A polaritonic Kerker-type void metasurface providing strong near-field enhancement localized on the surface is designed and fabricated. The metasurface facilitates double-resonance Raman scattering, a process that reveals key information about lattice dynamics and electronic structures, for analyzing 2D semiconductor monolayers. It also demonstrates superior stability in solvents and enhances biomolecule autofluorescence. These capabilities demonstrate the versatile potential of Si metasurfaces as a scalable, robust platform for interdisciplinary DUV spectroscopy applications, including advanced biomedical research and the investigation of emerging nanomaterials.
{"title":"Deep-UV Silicon Polaritonic Metasurfaces for Enhancing Biomolecule Autofluorescence and Two-Dimensional Material Double-Resonance Raman Scattering","authors":"Bo-Ray Lee, Mao Feng Chiang, Pei Ying Ho, Kuan-Heng Chen, Jia-Hua Lee, Po Hsiang Hsu, Yu Chieh Peng, Jun-Yi Hou, Shih-Chieh Chen, Qian-Yo Lee, Chun-Hao Chang, Bor-Ran Li, Tzu-En Lin, Chieh-Ting Lin, Min-Hsiung Shih, Der-Hsien Lien, Yu-Chuan Lin, Ray-Hua Horng, Yuri Kivshar, Ming Lun Tseng","doi":"10.1002/adfm.202420439","DOIUrl":"https://doi.org/10.1002/adfm.202420439","url":null,"abstract":"High-performance deep ultraviolet (DUV) spectroscopy is crucial in driving innovations for biomedical research, clinical diagnosis, and material science. DUV resonant nanostructures have shown capabilities for significantly improving spectroscopy sensitivity. However, they encounter significant challenges in practical applications, including instability due to oxidation and light-induced damage, and the strong photoluminescent noise background from their constituent materials. An efficient and robust DUV spectroscopy platform based on the polaritonic properties in all-dielectric silicon (Si) metasurfaces is proposed. Unlike conventional dielectric metasurfaces that rely on Mie-type modes, this approach leverages the polaritonic resonances in Si nanostructures—a striking yet underexplored property driven by interband transitions in the DUV regime—for nanophotonic sensing. A polaritonic Kerker-type void metasurface providing strong near-field enhancement localized on the surface is designed and fabricated. The metasurface facilitates double-resonance Raman scattering, a process that reveals key information about lattice dynamics and electronic structures, for analyzing 2D semiconductor monolayers. It also demonstrates superior stability in solvents and enhances biomolecule autofluorescence. These capabilities demonstrate the versatile potential of Si metasurfaces as a scalable, robust platform for interdisciplinary DUV spectroscopy applications, including advanced biomedical research and the investigation of emerging nanomaterials.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"41 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987701","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}
The manufacturing of biomimetic bone characterized by an organic–inorganic combination and fibrous structure has garnered significant attention. Inspired by the formation of multi-layered fibrous structures in bone tissue, this study is based on the fibril assembled from poly(γ-benzyl-L-glutamate) (PBLG) in helicogenic solvent, proposing a non-solvent-assisted 3D printing method for realizing the PBLG 3D printing while generating biomimetic fiber structures in One-Step to mimic the formation of collagen fiber bundles. The unprintable mixture of PBLG and hydroxyapatite nanoparticles (nHA) in 1,4-dioxane exhibits extrudability, self-supporting properties, and plasticity in ethanol. Meanwhile, ethanol-assisted printing leads to the spontaneous growth of PBLG-fibrils into submicron-fibers. Moreover, the integration of nHA with PBLG-fibers through hydrogen bonding contributes to the improvement of printability and mechanical properties. This method of ethanol-assisted fiber generation is successful with concentrated PBLG solutions, overcoming the limitation of previous research that focused only on dilute solutions. To expand the printable window, an ethanol-gel is developed as a support to achieve omnidirectional printing, resolving the issue of interlayer collapse caused by gravity and the conflict between printability and biomimetic fibers generation, optimizing the biomimetic bone manufacturing, leading to the precise biomimetic design of bone structures.
{"title":"Biomimetic Fibrous Bone Substitute Manufacture Through Non-Solvent-Assisted 3D Printing","authors":"Kunxi Zhang, Haowei Fang, Xiangyang Cheng, Jinyan Li, Jiujiang Zeng, Tao Zhang, Haiyan Cui, Huijie Gu, Jingbo Yin","doi":"10.1002/adfm.202419464","DOIUrl":"https://doi.org/10.1002/adfm.202419464","url":null,"abstract":"The manufacturing of biomimetic bone characterized by an organic–inorganic combination and fibrous structure has garnered significant attention. Inspired by the formation of multi-layered fibrous structures in bone tissue, this study is based on the fibril assembled from poly(γ-benzyl-L-glutamate) (PBLG) in helicogenic solvent, proposing a non-solvent-assisted 3D printing method for realizing the PBLG 3D printing while generating biomimetic fiber structures in One-Step to mimic the formation of collagen fiber bundles. The unprintable mixture of PBLG and hydroxyapatite nanoparticles (nHA) in 1,4-dioxane exhibits extrudability, self-supporting properties, and plasticity in ethanol. Meanwhile, ethanol-assisted printing leads to the spontaneous growth of PBLG-fibrils into submicron-fibers. Moreover, the integration of nHA with PBLG-fibers through hydrogen bonding contributes to the improvement of printability and mechanical properties. This method of ethanol-assisted fiber generation is successful with concentrated PBLG solutions, overcoming the limitation of previous research that focused only on dilute solutions. To expand the printable window, an ethanol-gel is developed as a support to achieve omnidirectional printing, resolving the issue of interlayer collapse caused by gravity and the conflict between printability and biomimetic fibers generation, optimizing the biomimetic bone manufacturing, leading to the precise biomimetic design of bone structures.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"95 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987698","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}
Yang Xu, Ruiyang Tan, Xiaolin Jiang, Luwei Bo, Yandong Wang, Haocheng Xu, Ping Chen, Kai Xi
Hierarchical pore structures offer a promising strategy for developing high-performance electromagnetic wave (EMW) absorption materials with a broad effective absorption bandwidth (EAB, reflection loss −10 dB) and reduced thickness. In this work, hyperbranched siloxane (HBPSi), featuring unparalleled 3D structure and high thermal stability, is integrated into polyimide (PI)/carbon nanotube (CNT) composite aerogels to fabricate a hierarchical pore architecture simply, resulting composite PI aerogels with macro-mesoporous structures exhibit exceptional EMW absorption, excellent mechanical properties, and low thermal conductivities, even with a minimal CNT content of just 7.45 wt.%. This intricate hierarchical pore structure of composite PI aerogels optimizes impedance matching with air, signifying augmented multiple reflections and scattering in the 3D porous structure, thus, the composite PI aerogel with a low density (0.123 g cm−3), minimum reflection loss (RLmin) of −51.13 dB and an EAB of 4.4 GHz at a matching thickness of 3.4 mm. The innovative construction of PI/CNT composite aerogels featuring hierarchical structures provides a promising avenue for the advancement of high-efficiency EMW absorption materials.
{"title":"Hierarchical Composite Polyimide Aerogels with Hyperbranched Siloxane for High Electromagnetic Wave Absorption","authors":"Yang Xu, Ruiyang Tan, Xiaolin Jiang, Luwei Bo, Yandong Wang, Haocheng Xu, Ping Chen, Kai Xi","doi":"10.1002/adfm.202421389","DOIUrl":"https://doi.org/10.1002/adfm.202421389","url":null,"abstract":"Hierarchical pore structures offer a promising strategy for developing high-performance electromagnetic wave (EMW) absorption materials with a broad effective absorption bandwidth (EAB, reflection loss −10 dB) and reduced thickness. In this work, hyperbranched siloxane (HBPSi), featuring unparalleled 3D structure and high thermal stability, is integrated into polyimide (PI)/carbon nanotube (CNT) composite aerogels to fabricate a hierarchical pore architecture simply, resulting composite PI aerogels with macro-mesoporous structures exhibit exceptional EMW absorption, excellent mechanical properties, and low thermal conductivities, even with a minimal CNT content of just 7.45 wt.%. This intricate hierarchical pore structure of composite PI aerogels optimizes impedance matching with air, signifying augmented multiple reflections and scattering in the 3D porous structure, thus, the composite PI aerogel with a low density (0.123 g cm<sup>−3</sup>), minimum reflection loss (RL<sub>min</sub>) of −51.13 dB and an EAB of 4.4 GHz at a matching thickness of 3.4 mm. The innovative construction of PI/CNT composite aerogels featuring hierarchical structures provides a promising avenue for the advancement of high-efficiency EMW absorption materials.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"30 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987493","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}
Hetero-anionic compounds containing two or more anions, their structures, and their properties are expected to be tunable through varying anionic ratios, yet their rational structural design is still a great challenge. Herein, it is reported that the first family of hetero-anionic oxychalcogenides with their structures and properties are well-tuned by the varied O:S ratios. These compounds consist of the trigonal Sr2(SnS4)2/3(SnOS3)1/3 (P3m1; O:S = 1:11), rhombohedral Sr2(GeS4)4/9(GeOS3)5/9 (R3; O:S = 1:6.2), orthorhombic Sr2[Ge(O0.89/S0.11)S3] (Ama2; O:S = 1:3.5), and orthorhombic Ba2(GeOS3)1/2(GeO2S2)1/2 (Pnma; O:S = 1:1.7), which are all considered as the derivatives of Sr2GeS4 with different O and S substitutions. The interesting structural transformation among them can be attributed to the “symmetry-breaking” and “structure-directing” properties of hetero-anions. In addition, owing to the different electronegativity and polarizability of O and S atoms, the functional properties of these materials can be tuned based on the varied O:S ratios. Through rationally increasing the O:S ratio, an excellent infrared nonlinear optical crystal, Sr2[Ge(O0.89/S0.11)S3] exhibiting the best balance between large second harmonic generation response and wide band gap among all reported oxychalcogenides has been successfully designed. These will provide new insights for the rational design of hetero-anionic functional materials, especially for the non-centrosymmetric ones.
{"title":"Hetero-Anionic Oxychalcogenides with Structures and Properties Tuned by the O:S Ratio","authors":"Shaoxin Cui, Shuoxing Yang, Hongping Wu, Zhanggui Hu, Jiyang Wang, Yicheng Wu, Hongwei Yu","doi":"10.1002/adfm.202424059","DOIUrl":"https://doi.org/10.1002/adfm.202424059","url":null,"abstract":"Hetero-anionic compounds containing two or more anions, their structures, and their properties are expected to be tunable through varying anionic ratios, yet their rational structural design is still a great challenge. Herein, it is reported that the first family of hetero-anionic oxychalcogenides with their structures and properties are well-tuned by the varied O:S ratios. These compounds consist of the trigonal Sr<sub>2</sub>(SnS<sub>4</sub>)<sub>2/3</sub>(SnOS<sub>3</sub>)<sub>1/3</sub> (<i>P</i>3<i>m</i>1; O:S = 1:11), rhombohedral Sr<sub>2</sub>(GeS<sub>4</sub>)<sub>4/9</sub>(GeOS<sub>3</sub>)<sub>5/9</sub> (<i>R</i>3; O:S = 1:6.2), orthorhombic Sr<sub>2</sub>[Ge(O<sub>0.89</sub>/S<sub>0.11</sub>)S<sub>3</sub>] (<i>Ama</i>2; O:S = 1:3.5), and orthorhombic Ba<sub>2</sub>(GeOS<sub>3</sub>)<sub>1/2</sub>(GeO<sub>2</sub>S<sub>2</sub>)<sub>1/2</sub> (<i>Pnma</i>; O:S = 1:1.7), which are all considered as the derivatives of Sr<sub>2</sub>GeS<sub>4</sub> with different O and S substitutions. The interesting structural transformation among them can be attributed to the “<i>symmetry-breaking</i>” and “<i>structure-directing</i>” properties of hetero-anions. In addition, owing to the different electronegativity and polarizability of O and S atoms, the functional properties of these materials can be tuned based on the varied O:S ratios. Through rationally increasing the O:S ratio, an excellent infrared nonlinear optical crystal, Sr<sub>2</sub>[Ge(O<sub>0.89</sub>/S<sub>0.11</sub>)S<sub>3</sub>] exhibiting the best balance between large second harmonic generation response and wide band gap among all reported oxychalcogenides has been successfully designed. These will provide new insights for the rational design of hetero-anionic functional materials, especially for the non-centrosymmetric ones.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"5 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987700","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}
3D scaffolds are essential as they serve as extracellular matrix (ECM)-like platforms to provide cells with mechanical support and facilitate their attachment for bone regeneration. As an emerging personalized treatment technology, 3D printing has been applied to treat irregular large-area bone defects caused by diseases such as tumors and trauma. However, traditional printing methods cannot control the microstructure of the scaffolds for bone tissue engineering (BTE). Meanwhile, commercial materials often cause rejection reactions, limiting the osteogenic effect of 3D-printed scaffolds. In this investigation, scaffolds with controllable micro-ordered morphology are prepared through cryogenic 3D printing combined with ice template technology. The surface of the scaffold exhibits an ordered micrometer-level structure that matches the growth direction of ice crystals, and the porosity of the scaffolds can be adjusted by the content of nano-hydroxyapatite (HA). The biological studies reveal an increased osteogenesis and angiogenesis of the composite scaffolds. The anisotropic mechanical stimulation signal regulates metabolic patterns, which may be a potential mechanism for anisotropic scaffolds to promote osteogenic differentiation by regulating S1P/S1PR2/YAP metabolic pathway. This study unlocks the potential of this simple method to produce biomimetic anisotropic scaffolds to achieve multiple functions for BTE.
{"title":"Mechanical Stimulus and Metabolic Responses by Cryo-Printing Anisotropic Scaffolds for Achieving Promoted Bone Regeneration","authors":"Yuemeng Zhu, Yangyang Li, Yixin Yang, Huixin Lv, Sicong Ren, Yidi Zhang, Yanmin Zhou","doi":"10.1002/adfm.202416546","DOIUrl":"https://doi.org/10.1002/adfm.202416546","url":null,"abstract":"3D scaffolds are essential as they serve as extracellular matrix (ECM)-like platforms to provide cells with mechanical support and facilitate their attachment for bone regeneration. As an emerging personalized treatment technology, 3D printing has been applied to treat irregular large-area bone defects caused by diseases such as tumors and trauma. However, traditional printing methods cannot control the microstructure of the scaffolds for bone tissue engineering (BTE). Meanwhile, commercial materials often cause rejection reactions, limiting the osteogenic effect of 3D-printed scaffolds. In this investigation, scaffolds with controllable micro-ordered morphology are prepared through cryogenic 3D printing combined with ice template technology. The surface of the scaffold exhibits an ordered micrometer-level structure that matches the growth direction of ice crystals, and the porosity of the scaffolds can be adjusted by the content of nano-hydroxyapatite (HA). The biological studies reveal an increased osteogenesis and angiogenesis of the composite scaffolds. The anisotropic mechanical stimulation signal regulates metabolic patterns, which may be a potential mechanism for anisotropic scaffolds to promote osteogenic differentiation by regulating S1P/S1PR2/YAP metabolic pathway. This study unlocks the potential of this simple method to produce biomimetic anisotropic scaffolds to achieve multiple functions for BTE.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"37 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987704","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}
Qilin Yue, Jiahao Lv, Shuangyan Huang, Youfa Guo, Yanan Wang, Jin Liu, Shijie Sun, Ming Wang, Shanlin Wang, Yong Wei
Detachable pressure sensitive adhesives (PSAs) show great potential in recycling the bonded components toward a circular economy, yet the existing challenges such as strict conditions, and time-consuming, adhesive residues after detachment significantly hinder the developments and applications. Here, a pressure sensitive ionoadhesive (PSIA) tape is first designed that has excellent interfacial toughness to various substrates (≈1.8 kJ m−2) yet can be electrically detached with high efficiency under safe voltages (≥90% within 1 min). The unique properties are achieved by introducing liquid-free lithium salt into poly(ionic liquids) to establish multiple non-covalent interactions (NCIs) including strong electrostatic interactions, moderate lithium bonds, weak ion-dipole interactions, and hydrogen bonding interactions. The multiple NCIs not only strengthen the physical crosslinking networks to improve the mechanical performances but promote the dissociation of lithium salt to improve the ion transport properties. Additionally, the elaborately designed low Tg and intrinsic low modulus features endow the PSIA tape adhesion with excellent reworkability, recyclability, and re-adhesion ability. It is believed this work offers a new strategy for designing electrically detachable and fully recyclable PSIA tapes, which facilitates the reuse and recycling of the bonded components and reduces industrial waste.
{"title":"Electrically Detachable and Fully Recyclable Pressure Sensitive Ionoadhesive Tapes","authors":"Qilin Yue, Jiahao Lv, Shuangyan Huang, Youfa Guo, Yanan Wang, Jin Liu, Shijie Sun, Ming Wang, Shanlin Wang, Yong Wei","doi":"10.1002/adfm.202423865","DOIUrl":"https://doi.org/10.1002/adfm.202423865","url":null,"abstract":"Detachable pressure sensitive adhesives (PSAs) show great potential in recycling the bonded components toward a circular economy, yet the existing challenges such as strict conditions, and time-consuming, adhesive residues after detachment significantly hinder the developments and applications. Here, a pressure sensitive ionoadhesive (PSIA) tape is first designed that has excellent interfacial toughness to various substrates (≈1.8 kJ m<sup>−2</sup>) yet can be electrically detached with high efficiency under safe voltages (≥90% within 1 min). The unique properties are achieved by introducing liquid-free lithium salt into poly(ionic liquids) to establish multiple non-covalent interactions (NCIs) including strong electrostatic interactions, moderate lithium bonds, weak ion-dipole interactions, and hydrogen bonding interactions. The multiple NCIs not only strengthen the physical crosslinking networks to improve the mechanical performances but promote the dissociation of lithium salt to improve the ion transport properties. Additionally, the elaborately designed low <i>T</i><sub>g</sub> and intrinsic low modulus features endow the PSIA tape adhesion with excellent reworkability, recyclability, and re-adhesion ability. It is believed this work offers a new strategy for designing electrically detachable and fully recyclable PSIA tapes, which facilitates the reuse and recycling of the bonded components and reduces industrial waste.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"37 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987696","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}
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