Advanced Functional Materials最新文献_第10页

Competing Self-Assembly to Access Helical Chitin Nanofibers for Advanced Chitinous Materials

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-02-28 DOI: 10.1002/adfm.202503547

Xinghuan Lin, Yuxin Feng, Qiaoqiao Jia, Ke Jiang, Jiechun Xiang, Ling Chen, Pan Chen, Anmin Zheng, Bo Duan

{"title":"Competing Self-Assembly to Access Helical Chitin Nanofibers for Advanced Chitinous Materials","authors":"Xinghuan Lin, Yuxin Feng, Qiaoqiao Jia, Ke Jiang, Jiechun Xiang, Ling Chen, Pan Chen, Anmin Zheng, Bo Duan","doi":"10.1002/adfm.202503547","DOIUrl":"https://doi.org/10.1002/adfm.202503547","url":null,"abstract":"Self-assembly affords a rich design space in fabricating polymeric nanomaterials. However, the crystalline polymer often exhibits the vigorous self-assembly process due to the extensive inter- and intra-molecular interactions, leading to the challenge in controlling their self-assembly behavior at the nanoscale. Herein, this work proposes a competing self-assembly strategy to regulate the molecular self-assembly tendency of chitin (a semi-crystalline polysaccharide) for achieving the regenerated chitin nanofibers with helical structure. This approach focuses on subtly modulating the noncovalent interactions among the chitin chains through deacetylation in a homogeneous system. By fine-tuning the degree of deacetylation (DD) to a moderate level (≈26%–37%), this work facilitates the chitin chains to compete self-assembling into the α-chitin and hydrated chitosan crystalline structure, which effectively mitigates the overall self-assembly tendency of the chitin chains and ultimately restricting their aggregations to nanoscale dimensions. This fabrication concept achieves various chitin nanofibers morphology (single, randomly branched and comb-like), all featuring a helical configuration. The chitin nanofibers are successfully processed into the nanopaper and bioink, highlighting the potential in constructing high-performance materials. This work anticipates that the competing self-assembly concept can be extended to other crystalline polymers with strong molecular interactions, offering a new pathway to design advanced nanomaterials for diverse applications.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"11 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143518423","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

In Situ Design of Metal-Phenolic Networks Coated Layered Double Hydroxides S-Scheme Photothermal Nanoreactor for Highly Efficient CO2 Reduction

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-02-28 DOI: 10.1002/adfm.202422347

He Cui, Shunli Li, Rui Zhou, Ruoxue Wang, Yi Zhao, Mingli Li, Kaifeng Li, Yidong Hu, Feng Liu, Kai Ge, Xiongwei Qu, Yongfang Yang

{"title":"In Situ Design of Metal-Phenolic Networks Coated Layered Double Hydroxides S-Scheme Photothermal Nanoreactor for Highly Efficient CO2 Reduction","authors":"He Cui, Shunli Li, Rui Zhou, Ruoxue Wang, Yi Zhao, Mingli Li, Kaifeng Li, Yidong Hu, Feng Liu, Kai Ge, Xiongwei Qu, Yongfang Yang","doi":"10.1002/adfm.202422347","DOIUrl":"https://doi.org/10.1002/adfm.202422347","url":null,"abstract":"Light-driven conversion of CO2 to fuel is the most attractive approach to achieve global carbon neutrality. However, the severe recombination of photogenerated carriers and the narrow range of solar spectrum utilization make its application still challenging. Here, a metal-phenolic networks (MPNs) coated layered double hydroxide S-scheme photothermal nanoreactor (CoAl-LDH @ TA-Cu-6 nm) is designed. It can efficiently capture infrared light to achieve a surprising 23-fold performance improvement over CoAl-LDH under the simulated sunlight illumination. A variety of in situ characterizations (in situ XPS and DRIFTS) and DFT calculations explore that the fascinating performance comes from the efficient charge separation and migration of the S-scheme catalysts, the photothermal properties endowed by the creatively introduced MPNs and the nanoscale pseudo-greenhouse effect brought about by the ingenious coating structure. This work provides new insights into the integration of nanoscale micromorphology and electronic state modification (defect and heterojunction engineering) to achieve broad spectrally responsive photocatalytic nanoreactor design and reveals mechanism for synergistically enhancing photocatalytic activity at the nano-, atomic-, and subatomic-scales, giving a golden key to address the energy crisis and environmental challenges.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"16 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143518425","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

Integrated Multispectral Modulator with Efficient Radiative Cooling for Innovative Thermal Camouflage

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-02-28 DOI: 10.1002/adfm.202500122

Yilin Ding, Zheyue Mei, Xueke Wu, Wenjing Zhang, Yaqi Zhang, Aike Xi, Di Gao, Fan Lan, Jiaqi Xu, Xungang Diao, Rufan Zhang

{"title":"Integrated Multispectral Modulator with Efficient Radiative Cooling for Innovative Thermal Camouflage","authors":"Yilin Ding, Zheyue Mei, Xueke Wu, Wenjing Zhang, Yaqi Zhang, Aike Xi, Di Gao, Fan Lan, Jiaqi Xu, Xungang Diao, Rufan Zhang","doi":"10.1002/adfm.202500122","DOIUrl":"https://doi.org/10.1002/adfm.202500122","url":null,"abstract":"Thermal camouflage technology offers critical countermeasures against infrared detection, yet persistent challenges remain in environmental adaptability, multispectral compatibility, and concurrent thermal management. To address these limitations, a spectrally selective modulator is pioneered that synergistically integrates radiative cooling with electrochromic tunability. The proposed modulator achieves spectrally selective emissivity modulation, demonstrating a remarkable emissivity change (Δɛmax = 0.76) within infrared detection bands (3–5 µm and 8–14 µm) while preserving high emissivity (ɛmax = 0.79) in non-detection bands for passive heat dissipation. Multispectral operability is further evidenced by dynamic diffuse reflectivity control (Rlowest = 0.07/0.05 across visible and near-infrared band) and terahertz absorptivity modulation (ΔAmax = 0.66), enabling full-spectrum adaptive concealment. The device achieves ≈10 °C apparent temperature modulation without external heating, effectively disguising a 70 °C target as 40 °C. Radiative cooling efficacy is validated through theoretical modeling (peak cooling power: 367 W m−2) and experimental verification (≈6 °C reduction vs conventional wide-spectrum stealth surfaces at 60 °C). With rapid switching (<6 s), exceptional cyclability (>103 cycles), and programmable information encryption capabilities. This work resolves the long-standing trade-off between adaptive camouflage and thermal regulation through wavelength-selective emissivity engineering, establishing a versatile foundation for next-generation intelligent camouflage systems across defense, aerospace, and energy-efficient thermal regulation applications.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"210 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143518431","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

Biodegradable Piezoelectric Implant for Wirelessly Delivering Electrical Stimulation to the Heart under Ultrasound Stress

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-02-28 DOI: 10.1002/adfm.202418708

Xiaotong Zhao, Jingyi Li, Jing Dai, Zhan Qu, Xiaoyun Li, Yong Wu, Shijun Hu, Jian Fang, Zhenya Shen, Miao Xiao, Mingliang Tang

{"title":"Biodegradable Piezoelectric Implant for Wirelessly Delivering Electrical Stimulation to the Heart under Ultrasound Stress","authors":"Xiaotong Zhao, Jingyi Li, Jing Dai, Zhan Qu, Xiaoyun Li, Yong Wu, Shijun Hu, Jian Fang, Zhenya Shen, Miao Xiao, Mingliang Tang","doi":"10.1002/adfm.202418708","DOIUrl":"https://doi.org/10.1002/adfm.202418708","url":null,"abstract":"Bioelectricity plays a pivotal role in human physiology and pathology, particularly within the cardiovascular system. Myocardial ischemia disrupts the normal transmission of electrical signals through the heart, leading to cardiomyocyte death, ventricular remodeling, and ultimately heart failure. Electrical stimulation (ES) has been proven to be an effective strategy for treating cardiac diseases. However, invasive electrode implantation and the unique anatomical position of the heart limit the clinical application of ES therapy. Developing wireless ES systems that effectively enhance bioelectric propagation and electrical activity in the heart can significantly advance therapeutic interventions. In this study, a lead-free, biodegradable and the Food and Drug Administration approved poly-L-lactic acid piezoelectric nanofiber is designed for wireless ES to the myocardium under ultrasonic stimulation, thus promoting structural and functional recovery of cardiac tissue in murine myocardial infarction model. Further study shows that the ultrasound-driven wireless ES system significantly enhanced mitochondria function and angiogenesis in vivo and in vitro experiments. Additionally, the ES system can regulate intracellular calcium ion concentration and cardia tissue contraction rhythm of isolated neonatal rat. Collectively, the findings offer a novel approach for the treatment of heart diseases and potential cardiac pacing applications under the ultrasound-driven wireless ES system.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"28 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143518468","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

Artificial Modulation of the Hydrogen Evolution Reaction Kinetics via Control of Grain Boundaries Density in Mo2C Through Laser Processing

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-02-25 DOI: 10.1002/adfm.202422918

Seok-Ki Hyeong, Byung-Joon Moon, Aram Lee, Min Ji Im, Hee Yun Yang, Ji-Hee Choi, Seung-Il Kim, Ji-Yun Moon, Seoungwoong Park, Sung Kyu Jang, Tae-Wook Kim, Jae-Hyun Lee, Sukang Bae, Seoung-Ki Lee

{"title":"Artificial Modulation of the Hydrogen Evolution Reaction Kinetics via Control of Grain Boundaries Density in Mo2C Through Laser Processing","authors":"Seok-Ki Hyeong, Byung-Joon Moon, Aram Lee, Min Ji Im, Hee Yun Yang, Ji-Hee Choi, Seung-Il Kim, Ji-Yun Moon, Seoungwoong Park, Sung Kyu Jang, Tae-Wook Kim, Jae-Hyun Lee, Sukang Bae, Seoung-Ki Lee","doi":"10.1002/adfm.202422918","DOIUrl":"https://doi.org/10.1002/adfm.202422918","url":null,"abstract":"Mo2C-based electrocatalysts have emerged as promising alternatives to Pt noble metals for hydrogen production, owing to their high catalytic activity. However, the catalytic efficiency of Mo2C is highly sensitive to factors such as surface termination, morphology, and support. Therefore, it is crucial to develop systematic crystal structure engineering methods to precisely modulate the activity, thereby enhancing both catalytic efficiency and stability. In this study, laser-based material processing is employed to modulate the microstructure of Mo2C catalysts, with a focus on grain size control and developing a grain boundary (GB)-rich structure to enhance the kinetics of hydrogen evolution reaction (HER). Laser-based thermal control promoted the formation of fine and uniformly distributed Mo2C grains (15.6 ± 5 nm) and high-density GBs (130 µm−1). High-angle GBs, which occupy most Mo2C GBs, enhance electrochemically active sites, facilitate electron transfer, and shift the work function to 5.10 eV, thereby reducing hydrogen adsorption energy. In addition, electrochemical tests reveal a significant decrease in overpotential (148 mV at 10 mA cm−2) and improve Tafel slopes (67.6 mV dec−1), confirming the enhanced kinetics of the HER. This laser-induced GB engineering strategy opens a new pathway for designing high-performance Mo2C-based electrocatalysts, advancing next-generation hydrogen production technologies.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"89 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143485996","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

Surface Chemical Conversion of Residual PbI2 Enables Efficient and Stable Perovskite Solar Cells by 1,3-Diphenyl-benzimidazolium Iodide Treatment

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-02-25 DOI: 10.1002/adfm.202418792

Xu Xiao, Zhiyuan Dai, Yuyao Yang, Li Yuan, Shuyuan Wan, Yang Yang, Tiankuo He, Zeyu Hu, Xinglin He, Fengyuan Li, Zhe Liu, Ruihao Chen, Hongqiang Wang

{"title":"Surface Chemical Conversion of Residual PbI2 Enables Efficient and Stable Perovskite Solar Cells by 1,3-Diphenyl-benzimidazolium Iodide Treatment","authors":"Xu Xiao, Zhiyuan Dai, Yuyao Yang, Li Yuan, Shuyuan Wan, Yang Yang, Tiankuo He, Zeyu Hu, Xinglin He, Fengyuan Li, Zhe Liu, Ruihao Chen, Hongqiang Wang","doi":"10.1002/adfm.202418792","DOIUrl":"https://doi.org/10.1002/adfm.202418792","url":null,"abstract":"Perovskite films have long been plagued by defects, mainly located at grain boundaries, leading to device degradation, especially the effects of residual PbI2. As effective grain boundary passivators, organic ammonium salts are thus extensively investigated. Here, the study introduces a nitrogen heterocyclic molecule, 1,3-diphenyl-benzimidazole iodide (DBI), for the post-treatment of the perovskite film to construct robust one-dimensional (1D)/three-dimensional (3D) perovskite structure. The 1D structure of DBPbI3 formed from the interaction between residual PbI2 and DBI enables the repair of local defects and enhancement of film stability. Concurrently, the double conjugated benzene and imidazole rings synergistically facilitate charge transfer and promote the optimization of energy levels, thereby boosting charge extraction. The corresponding 1D/3D perovskite solar cells (PSCs) yielded a high efficiency of 25.04% with excellent photo/thermal stabilities. The corresponding perovskite solar module exhibited an efficiency of 21.04% with a total area of 36 cm2 with robust long-term stability.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"65 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143486059","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

Industrial-Grade Flexible Carbon Fiber Paper/MXene Composite Electromagnetic Shielding Material with Ultra-Large Area and Ultra-High Performance

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-02-25 DOI: 10.1002/adfm.202421422

Meiping Song, Zhi Liu, Yu Wang, Chenhui Liu, Jiancheng Guo, Wei Wang, Xueping Gao, Bo Zhu, Xiaomin Yuan

{"title":"Industrial-Grade Flexible Carbon Fiber Paper/MXene Composite Electromagnetic Shielding Material with Ultra-Large Area and Ultra-High Performance","authors":"Meiping Song, Zhi Liu, Yu Wang, Chenhui Liu, Jiancheng Guo, Wei Wang, Xueping Gao, Bo Zhu, Xiaomin Yuan","doi":"10.1002/adfm.202421422","DOIUrl":"https://doi.org/10.1002/adfm.202421422","url":null,"abstract":"Paper-based composites are excellent choice for flexible electromagnetic shielding mateirals. Carbon fiber paper (CFP), with its excellent electrical conductivity and porosity, can be combined with various conductive materials to further improve electromagnetic interference (EMI) shielding capabilities. However, the large-scale industrial application of CFP remains rarely explored and requires further research to optimize its overall performance for commercialization. MXene, a 2D material with metal-like conductivity, can significantly enhance electromagnetic wave (EMW) energy loss. This study investigates the effects of MXene concentration gradients and the number of sprayed layers on EMI shielding effectiveness of carbon fiber paper using a simple spraying process. The electromagnetic shielding composite paper is fabricated through a impregnation blending technique, while the correlation between the number of layers and EMI shielding efficiency is systematically investigated. Results show that a 7-layer composite paper achieves an average EMI SE of 78.23 dB in the X─band. The composite also exhibits excellent hydrophobicity, high tensile strength, flexibility, and ultra-lightweight properties. The surface density of the 7-layer assembly material is only 0.08546 g cm−2. The straightforward preparation process of this electromagnetic shielding composite paper makes it highly suitable for industrial-scale production, demonstrating significant potential in aerospace, 5G technology, and other related fields.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"22 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143485989","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

Modulating Electronic Structure and Mass Transfer Kinetics via Mo-Mo2C Heterostructure for Ampere-Level Hydrogen Evolution

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-02-25 DOI: 10.1002/adfm.202422514

Shisheng Yuan, Lijuan Xiang, Nan Li, Tianqi Liang, Kaiwen Wang, Xinxin Gao, Mengyang Cui, Liang Zhao

{"title":"Modulating Electronic Structure and Mass Transfer Kinetics via Mo-Mo2C Heterostructure for Ampere-Level Hydrogen Evolution","authors":"Shisheng Yuan, Lijuan Xiang, Nan Li, Tianqi Liang, Kaiwen Wang, Xinxin Gao, Mengyang Cui, Liang Zhao","doi":"10.1002/adfm.202422514","DOIUrl":"https://doi.org/10.1002/adfm.202422514","url":null,"abstract":"Molybdenum carbide (Mo2C), known for its platinum-like electronic structure and excellent corrosion resistance, has demonstrated promising catalytic performance in laboratory tests. However, under industrial harsh conditions, the catalytic performance of Mo2C faces constraints due to its inherently strong hydrogen adsorption. Additionally, at elevated current densities, rapid depletion of active species in the electrolyte, coupled with hydrogen gas bubble accumulation, introduce significant mass transport challenges. This work introduces an electrode with Mo-Mo2C heterostructures supported on a Mo plate (Mo-Mo2C/Mo). Further analyses reveal that incorporating metallic Mo into the heterostructures optimizes the electronic structure of Mo2C. This optimization achieves a more balanced hydrogen adsorption, while also enhancing the capacity for water adsorption and dissociation of Mo2C, collectively improving catalytic activity. Furthermore, this electrode features a unique “bush-like” surface morphology that can induce a “turbulence” effect in the electrolyte near the electrode surface, facilitating electrolyte flow and mass transport. As a result, the Mo-Mo2C/Mo electrode exhibits excellent catalytic performance at high current densities (η1000 = 452 mV). Moreover, the strong corrosion resistance and robust integration of Mo and Mo2C ensure long-term stability, with the electrode remaining stable at 1.5 A in 6 M KOH over extended periods.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"6 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143486061","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

Superlubricity of Small Intestine-Inspired Soft Micro-Nanopillar Arrays Under Internal Pressure

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-02-25 DOI: 10.1002/adfm.202422774

Xinping Yu, Kang Yang, Yunfei Ru, Yikai Zhang, Bowen Zhang, Lu Dai, Jiayan Zhang, Mingjie Liu, Ruochen Fang, Lei Jiang

{"title":"Superlubricity of Small Intestine-Inspired Soft Micro-Nanopillar Arrays Under Internal Pressure","authors":"Xinping Yu, Kang Yang, Yunfei Ru, Yikai Zhang, Bowen Zhang, Lu Dai, Jiayan Zhang, Mingjie Liu, Ruochen Fang, Lei Jiang","doi":"10.1002/adfm.202422774","DOIUrl":"https://doi.org/10.1002/adfm.202422774","url":null,"abstract":"Superlubricating materials with extremely low friction coefficients are essential for minimizing energy loss and wear in medical and engineering applications. The small intestine, characterized by villi and microvilli along with biological lubricants, achieves ultralow friction under physiological pressures, making it a promising model for biomimetic materials. However, current studies primarily focus on its micron structure, lacking comprehensive replication of its composite structure and lubrication performance under internal pressure. Here, a bioinspired artificial intestine, consisting of an organohydrogel micro-nanopillar array (OHgel//MNA) that mimics the structure as well as the hydrophilic and oleophilic species of the small intestine, is developed using a two-step fabrication process. This biomimetic material exhibits a friction coefficient of ≈0.0085, demonstrating characteristics of superlubricity. These characteristics are comparable to those of the natural intestine and ≈90% lower than those of a smooth surface, while also exhibiting stability and wear resistance under internal pressure. The findings provide valuable insights for developing advanced medical materials inspired by the lubrication system of the small intestine, particularly for applications such as artificial intestines and medical catheters.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"21 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143486064","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

Highly Soluble and Oxidizing Organic Salts Doped Hole-Transporting Layer Enables Efficient and Stable Perovskite Solar Cells

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-02-25 DOI: 10.1002/adfm.202425038

Xin Luo, Danpeng Gao, Daqing Zhang, Guorong Zhou, Yuxiao Guo, Chunlei Zhang, Zonglong Zhu, Bo Xu

{"title":"Highly Soluble and Oxidizing Organic Salts Doped Hole-Transporting Layer Enables Efficient and Stable Perovskite Solar Cells","authors":"Xin Luo, Danpeng Gao, Daqing Zhang, Guorong Zhou, Yuxiao Guo, Chunlei Zhang, Zonglong Zhu, Bo Xu","doi":"10.1002/adfm.202425038","DOIUrl":"https://doi.org/10.1002/adfm.202425038","url":null,"abstract":"Chemical doping plays a crucial role in enhancing the charge transport and electrical conductivity of hole-transporting layers (HTLs) in perovskite solar cells (PSCs), leading to improved device performance and stability. However, developing highly soluble and oxidizing chemical dopants that ensure stable PSCs remains a significant challenge. Herein, the design and synthesis of a novel organic radical cation salt, XD1, comprising tris(4-methoxyphenyl)aminium as the radical cation and bis(trifluoromethane)sulfonimide (TFSI⁻) as the anion, are reported. XD1 exhibits excellent solubility in various organic solvents and demonstrates strong oxidative capability, significantly boosting the conductivity of HTLs by three orders of magnitude. Compared to conventional dopants like LiTFSI and Magic Blue (MB), XD1-doped Spiro-OMeTAD films demonstrate superior characteristics, including enhanced compactness, uniformity, and hydrophobicity. Remarkably, PSCs incorporating 2.0 mol% XD1 achieve a maximum power conversion efficiency (PCE) of 25.25%, surpassing the 24.44% PCE of LiTFSI-doped cells. Particularly, unencapsulated PSCs with XD1 retain over 91% of their initial efficiency after 1 000 h of continuous one-sun illumination at 85 °C in an N₂ atmosphere. This work represents a significant advancement in the development of highly soluble and efficient dopants for efficient and stable PSCs.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"32 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143495240","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