Tao Wang, Tingting Hu, Shibo Wang, Ruimin Xue, Chen Zhao, Boming Liu, Yu Yang, Chaojie Yu, Hai Li, Ruizheng Liang
Sonodynamic therapy (SDT) represents a minimally invasive alternative for cancer treatment. However, its efficacy is constrained by the insufficient reactive oxygen species generation of inorganic sonosensitizers due to wide bandgaps, rapid electron-hole recombination, and insufficient oxygen adsorption/activation. Herein, we report for the first time a novel sonosensitizer constructed by anchoring Pt single-atoms onto amorphous CoMgMo-layered double hydroxide (Pt/a-LDH) for high-efficiency sonodynamic immunotherapy. Through the synergy of defect engineering and single-atom modification, Pt/a-LDH achieves sharp bandgap reduction (from 2.4 to 0.6 eV) and abundant defective environment, dramatically promoting charge separation and inhibiting electron-hole recombination (an inhibition rate of 89.8%). Moreover, the unique 2D structure and hydroxyl coordination environment of LDH yield ultrahigh single-atom loading efficiency and defect density, which significantly promote oxygen adsorption/activation, reduce reaction energy barrier (bond energy from 3.6 to 2.1 eV), and accelerate reaction kinetics. Consequently, Pt/a-LDH achieves a significant enhancement in sonodynamic performance, generating singlet oxygen at 5.3 and 38.2 times that of CoMgMo-LDH and TiO2 sonosensitizer, respectively. In vivo assays demonstrate that polyethylene glycol-modified Pt/a-LDH induces robust immunogenic cell death, activates dendritic cell maturation, stimulates T-cell infiltration, and reprograms the immunosuppressive tumor microenvironment, offering a new paradigm for high-performance sonodynamic immunotherapy.
{"title":"Coupling Pt Single-Atoms with Amorphous LDH Nanosheets as a High-Efficiency Sonosensitizer for Sonodynamic Immunotherapy.","authors":"Tao Wang, Tingting Hu, Shibo Wang, Ruimin Xue, Chen Zhao, Boming Liu, Yu Yang, Chaojie Yu, Hai Li, Ruizheng Liang","doi":"10.1002/adma.72457","DOIUrl":"https://doi.org/10.1002/adma.72457","url":null,"abstract":"<p><p>Sonodynamic therapy (SDT) represents a minimally invasive alternative for cancer treatment. However, its efficacy is constrained by the insufficient reactive oxygen species generation of inorganic sonosensitizers due to wide bandgaps, rapid electron-hole recombination, and insufficient oxygen adsorption/activation. Herein, we report for the first time a novel sonosensitizer constructed by anchoring Pt single-atoms onto amorphous CoMgMo-layered double hydroxide (Pt/a-LDH) for high-efficiency sonodynamic immunotherapy. Through the synergy of defect engineering and single-atom modification, Pt/a-LDH achieves sharp bandgap reduction (from 2.4 to 0.6 eV) and abundant defective environment, dramatically promoting charge separation and inhibiting electron-hole recombination (an inhibition rate of 89.8%). Moreover, the unique 2D structure and hydroxyl coordination environment of LDH yield ultrahigh single-atom loading efficiency and defect density, which significantly promote oxygen adsorption/activation, reduce reaction energy barrier (bond energy from 3.6 to 2.1 eV), and accelerate reaction kinetics. Consequently, Pt/a-LDH achieves a significant enhancement in sonodynamic performance, generating singlet oxygen at 5.3 and 38.2 times that of CoMgMo-LDH and TiO<sub>2</sub> sonosensitizer, respectively. In vivo assays demonstrate that polyethylene glycol-modified Pt/a-LDH induces robust immunogenic cell death, activates dendritic cell maturation, stimulates T-cell infiltration, and reprograms the immunosuppressive tumor microenvironment, offering a new paradigm for high-performance sonodynamic immunotherapy.</p>","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":" ","pages":"e72457"},"PeriodicalIF":26.8,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146148569","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}
Perovskite solar cells (PSCs) have achieved significantly high power conversion efficiencies (PCEs), approaching the performance of silicon-based solar cells. However, scaling up PSCs while maintaining high-efficiency remains a significant challenge. Here, we report a negligible efficiency loss in scalable PSCs by formate anions stabilized colloids. The formate anions enhance the charge density on colloidal surfaces, strengthening electrostatic repulsion and preventing particle aggregation. This significantly reduces colloidal size to around 30 nm and promotes homogeneous nucleation, allowing the scalable fabrication of high-quality perovskite thin films from a small area to mini module size in ambient air. As a result, PSCs achieved PCEs of 24.30% (1 cm2) and 24.10% (12.6 cm2, 5 cm × 5 cm mini module), with negligible efficiency loss upon scaling. To the best of our knowledge, this represents the highest efficiency reported for mini-modules. Most importantly, the encapsulated mini module retained 95% of their initial efficiency after 1000 h of operation at maximum power point tracking in ambient air.
钙钛矿太阳能电池（PSCs）取得了显著的高功率转换效率（PCEs），接近硅基太阳能电池的性能。然而，在保持高效率的同时扩大psc的规模仍然是一个重大挑战。在这里，我们报告了甲酸阴离子稳定胶体在可扩展psc中的效率损失可以忽略不计。甲酸阴离子增强了胶体表面的电荷密度，增强了静电斥力，防止了粒子聚集。这大大减少了胶体尺寸到30纳米左右，促进了均匀成核，允许在环境空气中从小面积到迷你模块尺寸的高质量钙钛矿薄膜的可扩展制造。因此，PSCs实现了24.30% （1 cm2）和24.10% （12.6 cm2, 5 cm × 5 cm迷你模块）的pce，缩放后的效率损失可以忽略不计。据我们所知，这代表了迷你模块报告的最高效率。最重要的是，封装的迷你模块在环境空气中以最大功率点跟踪运行1000小时后保持了95%的初始效率。
{"title":"Nanoscale Colloids Engineering for Minimizing Efficiency Loss in Scalable Perovskite Solar Cells","authors":"Zhiwei Li, Kaiyu Wang, Xiaozheng Duan, Guang Yang, Haotian Zhang, Tengfei Pan, Qing Yao, Tai Li, Xingyu Gao, Qingxun Guo, Zhelu Hu, Lingfeng Chao, Yingdong Xia, Yonghua Chen","doi":"10.1002/adma.202520776","DOIUrl":"https://doi.org/10.1002/adma.202520776","url":null,"abstract":"Perovskite solar cells (PSCs) have achieved significantly high power conversion efficiencies (PCEs), approaching the performance of silicon-based solar cells. However, scaling up PSCs while maintaining high-efficiency remains a significant challenge. Here, we report a negligible efficiency loss in scalable PSCs by formate anions stabilized colloids. The formate anions enhance the charge density on colloidal surfaces, strengthening electrostatic repulsion and preventing particle aggregation. This significantly reduces colloidal size to around 30 nm and promotes homogeneous nucleation, allowing the scalable fabrication of high-quality perovskite thin films from a small area to mini module size in ambient air. As a result, PSCs achieved PCEs of 24.30% (1 cm<sup>2</sup>) and 24.10% (12.6 cm<sup>2</sup>, 5 cm × 5 cm mini module), with negligible efficiency loss upon scaling. To the best of our knowledge, this represents the highest efficiency reported for mini-modules. Most importantly, the encapsulated mini module retained 95% of their initial efficiency after 1000 h of operation at maximum power point tracking in ambient air.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"46 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146540","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}
Dan Liu, Keliang Song, Haorui Zhang, Zhipeng Liu, Guansong He, Junru Wang, Wenming Yang, Xu Zhao, Zhijian Yang
The catalytic role of carbon curvature in the thermal decomposition of ammonium perchlorate (AP) remains largely unexplored. To address this gap, this study employs machine learning and density functional theory to expedite the screening of curved carbon materials for enhanced catalytic energy release from AP. High-curvature carbon nanotubes (H-CNTs) exhibit superior performance by tuning the carbon p-band center, which strengthens the adsorption of key intermediates of AP decomposition (e.g., HClO4). H-CNT lowers the AP decomposition temperature by 103.5°C and dramatically amplifies heat release by a factor of 6.6 (increasing from 250.7 to 1898.5 J g−1). In addition, enhanced safety, increased maximum output pressure (from 5.9 to 135.3 kPa) and a markedly improved combustion effect (ignition in just 2 ms) are also observed with high-curvature CNTs. These findings underscore curvature as a critical design parameter and provide a geometry-electronic-activity framework for developing efficient catalysts in energetic materials.
{"title":"Unveiling the Role of Curvature in Carbon for Improved Energy Release of Ammonium Perchlorate","authors":"Dan Liu, Keliang Song, Haorui Zhang, Zhipeng Liu, Guansong He, Junru Wang, Wenming Yang, Xu Zhao, Zhijian Yang","doi":"10.1002/adma.202504755","DOIUrl":"https://doi.org/10.1002/adma.202504755","url":null,"abstract":"The catalytic role of carbon curvature in the thermal decomposition of ammonium perchlorate (AP) remains largely unexplored. To address this gap, this study employs machine learning and density functional theory to expedite the screening of curved carbon materials for enhanced catalytic energy release from AP. High-curvature carbon nanotubes (H-CNTs) exhibit superior performance by tuning the carbon <i>p</i>-band center, which strengthens the adsorption of key intermediates of AP decomposition (e.g., HClO<sub>4</sub>). H-CNT lowers the AP decomposition temperature by 103.5°C and dramatically amplifies heat release by a factor of 6.6 (increasing from 250.7 to 1898.5 J g<sup>−1</sup>). In addition, enhanced safety, increased maximum output pressure (from 5.9 to 135.3 kPa) and a markedly improved combustion effect (ignition in just 2 ms) are also observed with high-curvature CNTs. These findings underscore curvature as a critical design parameter and provide a geometry-electronic-activity framework for developing efficient catalysts in energetic materials.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"284 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146376","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}
Shun Kashiwaya, Stephen Nagaraju Myakala, Sho Nekita, Yuta Tsuji, Yuran Niu, Xianjie Liu, Leiqiang Qin, Manisha Sharma, Alexei Zakharov, Lars Hultman, Dominik Eder, Hikaru Saito, Alexey Cherevan, Johanna Rosen
Designing composite photocatalytic systems with nanoscale precision is crucial. While conventional facet-selective photo-deposition successfully utilizes spherical co-catalysts, the directed deposition of pre-synthesized two-dimensional (2D) materials onto specific facets remains extremely challenging. This work demonstrates an electrostatic assembly strategy for the precise deposition of 2D transition metal carbides (MXenes) onto anisotropic single-crystal semiconducting metal oxides. By precisely controlling the solution pH, we modulated the surface charge of the MXenes and the distinct crystallographic facets of the metal oxides, enabling selective deposition driven by electrostatic attraction. Negatively charged Mo4/3C MXenes were selectively deposited on the electron-rich (101) surface of TiO2 at pH 3, the (100) surface of Cu2O exposed at pH 11, and the (010) surface of BiVO4 at pH 1.5. The high facet selectivity was confirmed through a combination of advanced techniques, including electron microscopy, electron spectroscopy, and synchrotron-based spectromicroscopy. This selective interfacial engineering promotes spatially separated charge carrier migration toward distinct facets, while Schottky barriers form at the MXenes/oxides interfaces. The MXenes act as efficient reduction co-catalysts, facilitating the rapid consumption of electrons, thereby enhancing photocatalytic hydrogen evolution. This work establishes a generalizable, non-photolytic method for integrating challenging 2D co-catalysts with facet-engineered semiconductors for designing composite photocatalysts.
{"title":"Facet-Selective Electrostatic Assembling of 2D Mxene onto Anisotropic Single-Crystal Metal Oxides for Enhanced Photocatalysis","authors":"Shun Kashiwaya, Stephen Nagaraju Myakala, Sho Nekita, Yuta Tsuji, Yuran Niu, Xianjie Liu, Leiqiang Qin, Manisha Sharma, Alexei Zakharov, Lars Hultman, Dominik Eder, Hikaru Saito, Alexey Cherevan, Johanna Rosen","doi":"10.1002/adma.202519087","DOIUrl":"https://doi.org/10.1002/adma.202519087","url":null,"abstract":"Designing composite photocatalytic systems with nanoscale precision is crucial. While conventional facet-selective photo-deposition successfully utilizes spherical co-catalysts, the directed deposition of pre-synthesized two-dimensional (2D) materials onto specific facets remains extremely challenging. This work demonstrates an electrostatic assembly strategy for the precise deposition of 2D transition metal carbides (MXenes) onto anisotropic single-crystal semiconducting metal oxides. By precisely controlling the solution pH, we modulated the surface charge of the MXenes and the distinct crystallographic facets of the metal oxides, enabling selective deposition driven by electrostatic attraction. Negatively charged Mo<sub>4/3</sub>C MXenes were selectively deposited on the electron-rich (101) surface of TiO<sub>2</sub> at pH 3, the (100) surface of Cu<sub>2</sub>O exposed at pH 11, and the (010) surface of BiVO<sub>4</sub> at pH 1.5. The high facet selectivity was confirmed through a combination of advanced techniques, including electron microscopy, electron spectroscopy, and synchrotron-based spectromicroscopy. This selective interfacial engineering promotes spatially separated charge carrier migration toward distinct facets, while Schottky barriers form at the MXenes/oxides interfaces. The MXenes act as efficient reduction co-catalysts, facilitating the rapid consumption of electrons, thereby enhancing photocatalytic hydrogen evolution. This work establishes a generalizable, non-photolytic method for integrating challenging 2D co-catalysts with facet-engineered semiconductors for designing composite photocatalysts.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"18 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146139090","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}
While organic photovoltaics (OPVs) have achieved remarkable efficiencies, their practical deployment remains hindered by insufficient stability. Herein, we find that degradation is strongly associated with diffusion-driven intermixing and redox chemistry at the buried molybdenum trioxide (MoO3)/photoactive materials contact region. To address this issue, we incorporate 1H-isoindole-1,3(2H)-dione, 2,2’-(oxydi-4,1-phenylene) bis[3a,4,7,7a-tetrahydro-(9CI)] (IPE) into the bulk heterojunction as a bulk passivator that interacts with diffusing MoO3 species by passivating oxygen vacancies in MoO3, thereby suppressing redox reactions between MoO3 and photoactive materials. The IPE-containing devices achieve a champion efficiency of 19.06% alongside exceptional thermal robustness, retaining 87.5% of their initial efficiency after thermal aging at 170°C for 5 h (vs. 48.8% for control devices). Critically, under harsh environmental stressors, these devices maintain >80% of their initial efficiency after 500 thermal cycles (−40°C to 85°C, ∼60% relative humidity, ISOS-T-3) and over 1150-h continuous maximum power point tracking under 1 Sun illumination (65°C, ∼50% relative humidity, ISOS-L-3). This represents one of the highest stability levels reported for OPVs under the stringent ISOS-T-3 and ISOS-L-3 protocols. This work provides a generalizable bulk modification strategy to mitigate diffusion- and redox-driven degradation at buried contacts, paving the way for the practical deployment of stable, high-efficiency OPVs.
虽然有机光伏发电（opv）已经取得了显著的效率，但其实际部署仍然受到稳定性不足的阻碍。在此，我们发现降解与埋藏的三氧化钼(MoO3)/光活性材料接触区域的扩散驱动混合和氧化还原化学密切相关。为了解决这一问题，我们将1h -异吲哚-1,3(2H)-二酮，2,2 ' -（氧-4,1-苯基）双[3a，4,7,7a-四氢-(9CI)] （IPE）加入到本体异质结中，作为本体钝化剂，通过钝化MoO3中的氧空位与扩散的MoO3相互作用，从而抑制MoO3与光活性材料之间的氧化还原反应。含有ipe的器件具有19.06%的冠军效率以及出色的热鲁棒性，在170°C热老化5小时后保持其初始效率的87.5%（相比之下，控制器件为48.8%）。至关重要的是，在恶劣的环境压力下，这些设备在500个热循环（- 40°C至85°C，相对湿度为60%，iso - t -3）和在1个太阳照射（65°C，相对湿度为50%，iso - l -3）下超过1150小时的连续最大功率点跟踪后保持80%的初始效率。这是在严格的iso - t -3和iso - l -3协议下报道的opv的最高稳定性水平之一。这项工作提供了一种通用的整体改性策略，以减轻埋藏触点处的扩散和氧化还原驱动的降解，为稳定、高效的opv的实际部署铺平了道路。
{"title":"Bulk Passivation of Molybdenum Trioxide Enables Inverted Organic Photovoltaics with Significantly Enhanced Stability under Extreme Conditions","authors":"Qianqian Qi, Jiaming Huang, Cenqi Yan, Jiayu Wang, Jiehao Fu, Kaifeng Jing, Guang Yang, Yakun He, Yufei Gong, Jie Lv, Xiaokang Sun, Xian He, Qiang Yang, Xiancheng Ren, Ke Zeng, Hanlin Hu, Hua Tang, Frédéric Laquai, Lei Meng, Yongfang Li, Gang Li, Pei Cheng","doi":"10.1002/adma.202522299","DOIUrl":"https://doi.org/10.1002/adma.202522299","url":null,"abstract":"While organic photovoltaics (OPVs) have achieved remarkable efficiencies, their practical deployment remains hindered by insufficient stability. Herein, we find that degradation is strongly associated with diffusion-driven intermixing and redox chemistry at the buried molybdenum trioxide (MoO<sub>3</sub>)/photoactive materials contact region. To address this issue, we incorporate 1H-isoindole-1,3(2H)-dione, 2,2’-(oxydi-4,1-phenylene) bis[3a,4,7,7a-tetrahydro-(9CI)] (IPE) into the bulk heterojunction as a bulk passivator that interacts with diffusing MoO<sub>3</sub> species by passivating oxygen vacancies in MoO<sub>3</sub>, thereby suppressing redox reactions between MoO<sub>3</sub> and photoactive materials. The IPE-containing devices achieve a champion efficiency of 19.06% alongside exceptional thermal robustness, retaining 87.5% of their initial efficiency after thermal aging at 170°C for 5 h (vs. 48.8% for control devices). Critically, under harsh environmental stressors, these devices maintain >80% of their initial efficiency after 500 thermal cycles (−40°C to 85°C, ∼60% relative humidity, ISOS-T-3) and over 1150-h continuous maximum power point tracking under 1 Sun illumination (65°C, ∼50% relative humidity, ISOS-L-3). This represents one of the highest stability levels reported for OPVs under the stringent ISOS-T-3 and ISOS-L-3 protocols. This work provides a generalizable bulk modification strategy to mitigate diffusion- and redox-driven degradation at buried contacts, paving the way for the practical deployment of stable, high-efficiency OPVs.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"46 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146374","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}
As an emerging class of crystalline porous materials, COFs have attracted increasing attention in fields such as photocatalysis. Understanding how the linkage chemistry of COFs influences their construction and photoelectrochemical properties and photocatalytic performance remains a significant challenge. Herein, two quinazoline-linked COFs are assembled by the condensation of 1,3,6,8-tetra (4-formylphenyl) pyrene (TFPPy) with 3,3'-dibenzoyl-[1,1'-biphenyl]-4,4'-diamine (BD(Bz)) and 3,3'-dibenzoyl-4,4'-terphenyl diamine (BT(Bz)) respectively through a three-component reaction in the presence of an ammonia source. By integrating quinazoline linkage with pyrene structural unit, BD(Bz)-TFPPy-COF (COF-1b) and BT(Bz)-TFPPy-COF (COF-2b) exhibit electron donor-acceptor properties and possess high chemical stability as well, which demonstrated excellent photocatalytic performance for the selective synthesis of sulfoxides from alkenes and thiols. Incorporation of linkage chemistry and building blocks selection of COFs provides effective strategies for modulating its optoelectronic properties to improve photocatalytic performance.
{"title":"Construction of Quinazoline-Bridged Donor-Acceptor Covalent Organic Frameworks for Photocatalytic Sulfoxide Synthesis from Alkenes and Thiols","authors":"Xiaohu Li, Yanjing Wang, Liang Cheng, Li Liu","doi":"10.1002/adma.202523654","DOIUrl":"https://doi.org/10.1002/adma.202523654","url":null,"abstract":"As an emerging class of crystalline porous materials, COFs have attracted increasing attention in fields such as photocatalysis. Understanding how the linkage chemistry of COFs influences their construction and photoelectrochemical properties and photocatalytic performance remains a significant challenge. Herein, two quinazoline-linked COFs are assembled by the condensation of 1,3,6,8-tetra (4-formylphenyl) pyrene (TFPPy) with 3,3'-dibenzoyl-[1,1'-biphenyl]-4,4'-diamine (BD(Bz)) and 3,3'-dibenzoyl-4,4'-terphenyl diamine (BT(Bz)) respectively through a three-component reaction in the presence of an ammonia source. By integrating quinazoline linkage with pyrene structural unit, BD(Bz)-TFPPy-COF (COF-1b) and BT(Bz)-TFPPy-COF (COF-2b) exhibit electron donor-acceptor properties and possess high chemical stability as well, which demonstrated excellent photocatalytic performance for the selective synthesis of sulfoxides from alkenes and thiols. Incorporation of linkage chemistry and building blocks selection of COFs provides effective strategies for modulating its optoelectronic properties to improve photocatalytic performance.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"39 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146375","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}
Cesium–copper–halide (Cs–Cu–X) perovskites are potential substitutes to lead-halide perovskites for broadband electroluminescence (EL) in white light-emitting diodes (LED) due to their non-toxicity and unique self-trapped exciton (STE) characters. Many efforts have been devoted to pushing up EL efficiencies of Cs–Cu–I LED devices, while there is no report of EL based on their Cl-based counterparts yet. In this work, the EL of the Cs–Cu–Cl nanocrystals (NCs) was first demonstrated by a holistic structural modulation, whose champion device reached an external quantum efficiency of 2.02% and a high luminance of 3345 cd m−2. The efficient bluish-white EL was explored to collectively derive from the smooth film morphology, exciton inter-band transition, triplet STE behavior, and promising electron transport ability of the Cs–Cu–Cl NC film. Additionally, the potential photophysical process for the broadband emission was proposed, collectively expanding the Cu-based perovskite EL family for displays and lighting applications.
铯-铜-卤化（Cs-Cu-X）钙钛矿由于其无毒和独特的自捕获激子（STE）特性，是替代卤化铅钙钛矿用于白光二极管（LED）宽带电致发光（EL）的潜在替代品。许多人致力于提高Cs-Cu-I LED器件的EL效率，而基于cl - i LED器件的EL还没有报道。本文首次通过整体结构调制证明了Cs-Cu-Cl纳米晶体（nc）的EL，其champion器件达到了2.02%的外量子效率和3345 cd m−2的高亮度。有效的蓝白色电致发光是由Cs-Cu-Cl NC膜的光滑膜形态、激子带间跃迁、三重态电致发光行为和有前途的电子传输能力共同产生的。此外，还提出了宽带发射的潜在光物理过程，共同扩展了用于显示和照明应用的cu基钙钛矿EL家族。
{"title":"Structural Modulation Enables Bright and Efficient Cs–Cu–Cl Electroluminescence","authors":"Yongqiang Ji, Yuquan Wang, Zexing Yuan, Yufan Zhou, Poen Hsueh, Zhiqiang Chen, Yue Zhang, Hailong Wang, Qingqian Wang, Zhenwei Li, Peng Chen, Xiaobo He, Xinpeng Wang, Jiang Wu, Yi Tong, Xiaoyu Yang, Rui Zhu, Xinqiang Wang","doi":"10.1002/adma.202522256","DOIUrl":"https://doi.org/10.1002/adma.202522256","url":null,"abstract":"Cesium–copper–halide (Cs–Cu–X) perovskites are potential substitutes to lead-halide perovskites for broadband electroluminescence (EL) in white light-emitting diodes (LED) due to their non-toxicity and unique self-trapped exciton (STE) characters. Many efforts have been devoted to pushing up EL efficiencies of Cs–Cu–I LED devices, while there is no report of EL based on their Cl-based counterparts yet. In this work, the EL of the Cs–Cu–Cl nanocrystals (NCs) was first demonstrated by a holistic structural modulation, whose champion device reached an external quantum efficiency of 2.02% and a high luminance of 3345 cd m<sup>−2</sup>. The efficient bluish-white EL was explored to collectively derive from the smooth film morphology, exciton inter-band transition, triplet STE behavior, and promising electron transport ability of the Cs–Cu–Cl NC film. Additionally, the potential photophysical process for the broadband emission was proposed, collectively expanding the Cu-based perovskite EL family for displays and lighting applications.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"1 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146378","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}
Tendon regeneration requires materials that dynamically adapt to the healing stages, offering mechanical support, adhesion prevention, inflammation control, and collagen remodeling. We introduce a novel, dynamically adaptive piezoelectric hydrogel designed to address these requirements. The hydrogel features a bioinspired, anti-adhesive lotus structure to minimize fibroblast and protein adhesion, preventing postoperative complications. Furthermore, it incorporates rationally designed gradients in piezoelectricity, mechanical properties, and degradation rate. These gradients allow the hydrogel to dynamically match the evolving needs of tendon healing, providing adjustable mechanical, electrical stimulation, and controllable degradation. The hydrogel demonstrably reduces inflammation (downregulating TNF-α), promotes M2 macrophage polarization, inhibits bacterial growth, and stimulates endogenous tendon regeneration. This regeneration is characterized by increased collagen I deposition, improved fiber alignment, and enhanced biomechanical properties. Transcriptomic analysis revealed upregulation of genes associated with mechanotransduction, tissue remodeling, and anti-inflammatory responses, alongside downregulation of fibrotic and oxidative stress pathways. This self-powered, multi-gradient scaffold represents a significant advancement in tendon tissue engineering, offering a promising strategy for tendinopathy treatment.
{"title":"A 3D-Printed Piezoelectric Scaffold With Bio-Inspired Gradient and Dynamic Adaptation for Tendon Regeneration.","authors":"Xinyue Huang, Jiachen Liang, Qing Jia, Kaiqi Qin, Jiakai Shi, Zengjie Fan","doi":"10.1002/adma.202517298","DOIUrl":"https://doi.org/10.1002/adma.202517298","url":null,"abstract":"<p><p>Tendon regeneration requires materials that dynamically adapt to the healing stages, offering mechanical support, adhesion prevention, inflammation control, and collagen remodeling. We introduce a novel, dynamically adaptive piezoelectric hydrogel designed to address these requirements. The hydrogel features a bioinspired, anti-adhesive lotus structure to minimize fibroblast and protein adhesion, preventing postoperative complications. Furthermore, it incorporates rationally designed gradients in piezoelectricity, mechanical properties, and degradation rate. These gradients allow the hydrogel to dynamically match the evolving needs of tendon healing, providing adjustable mechanical, electrical stimulation, and controllable degradation. The hydrogel demonstrably reduces inflammation (downregulating TNF-α), promotes M2 macrophage polarization, inhibits bacterial growth, and stimulates endogenous tendon regeneration. This regeneration is characterized by increased collagen I deposition, improved fiber alignment, and enhanced biomechanical properties. Transcriptomic analysis revealed upregulation of genes associated with mechanotransduction, tissue remodeling, and anti-inflammatory responses, alongside downregulation of fibrotic and oxidative stress pathways. This self-powered, multi-gradient scaffold represents a significant advancement in tendon tissue engineering, offering a promising strategy for tendinopathy treatment.</p>","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":" ","pages":"e17298"},"PeriodicalIF":26.8,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146140315","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}
Jiafu Liu, Wenzhuo Fang, Kai Wang, Zhidong Ma, Jie Yan, Ming Yang, Yangwang Jin, Meng Liu, Xi Yang, Wenyao Li, Qiang Fu, Yaopeng Zhang, Kaile Zhang
Urethral stricture, a prevalent urological disorder characterized by fibrosis of periurethral tissues, severely compromises urinary function and patient quality of life. Despite various clinical interventions, recurrence remains frequent, largely due to the lack of physiologically relevant in vitro models for mechanistic investigation and drug screening. Here, we present a biomimetic urethra-on-a-chip platform that integrates microfluidics, three-dimensional (3D) printing, and near-field electrospinning to recapitulate the structural and biochemical complexity of the native urethra. The device features polydimethylsiloxane (PDMS) microchannels coupled with a multilayered polycaprolactone (PCL) membrane, functionalized using a bladder acellular matrix (BAM)–gelatin bioink to emulate the extracellular matrix (ECM) microenvironment. A bilayer microchamber configuration supports spatially organized coculture of fibroblasts and urothelial cells under dynamic perfusion, reproducing physiological shear stress and nutrient gradients. Under fibrotic stimulation by transforming growth factor beta 1 (TGF-β1), the system faithfully mimicked fibroblast activation and epithelial injury, while rapamycin treatment effectively attenuated fibrotic responses, validating its potential for pharmacological testing. This urethra-on-a-chip provides a robust, reproducible, and cost-efficient platform for modeling urethral fibrosis and evaluating antifibrotic therapeutics. By bridging biofabrication, microfluidics, and tissue pathophysiology, this work establishes a versatile organ-on-a-chip model with significant implications for translational research and personalized regenerative medicine.
{"title":"Biomimetic Urethra-on-a-Chip Platform for Modelling Fibrosis: 3D-Printing and Near-Field Electrospinning in BAM-Functionalized Microenvironment","authors":"Jiafu Liu, Wenzhuo Fang, Kai Wang, Zhidong Ma, Jie Yan, Ming Yang, Yangwang Jin, Meng Liu, Xi Yang, Wenyao Li, Qiang Fu, Yaopeng Zhang, Kaile Zhang","doi":"10.1002/adma.202521431","DOIUrl":"https://doi.org/10.1002/adma.202521431","url":null,"abstract":"Urethral stricture, a prevalent urological disorder characterized by fibrosis of periurethral tissues, severely compromises urinary function and patient quality of life. Despite various clinical interventions, recurrence remains frequent, largely due to the lack of physiologically relevant in vitro models for mechanistic investigation and drug screening. Here, we present a biomimetic urethra-on-a-chip platform that integrates microfluidics, three-dimensional (3D) printing, and near-field electrospinning to recapitulate the structural and biochemical complexity of the native urethra. The device features polydimethylsiloxane (PDMS) microchannels coupled with a multilayered polycaprolactone (PCL) membrane, functionalized using a bladder acellular matrix (BAM)–gelatin bioink to emulate the extracellular matrix (ECM) microenvironment. A bilayer microchamber configuration supports spatially organized coculture of fibroblasts and urothelial cells under dynamic perfusion, reproducing physiological shear stress and nutrient gradients. Under fibrotic stimulation by transforming growth factor beta 1 (TGF-β1), the system faithfully mimicked fibroblast activation and epithelial injury, while rapamycin treatment effectively attenuated fibrotic responses, validating its potential for pharmacological testing. This urethra-on-a-chip provides a robust, reproducible, and cost-efficient platform for modeling urethral fibrosis and evaluating antifibrotic therapeutics. By bridging biofabrication, microfluidics, and tissue pathophysiology, this work establishes a versatile organ-on-a-chip model with significant implications for translational research and personalized regenerative medicine.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"16 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146377","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}
Duo Xu, Buxuan Li, You Lyu, Vivian J Santamaria-Garcia, Yuan Zhu, Svetlana V Boriskina
Developing fast, reversible, and recyclable thermal switches is essential to advance adaptive thermal management. Here, we present a strain-tunable thermal switch based on largely amorphous olefin block copolymer (OBC) fibers, achieving a continuous switching ratio above 2 over 1000 cycles, as well as very short response times below 0.22 s. Using Raman spectroscopy, we quantify vibrational delocalization with increasing strain and demonstrate its direct connection to the observed thermal conductivity changes. We show that unlike prior assumptions linking propagating heat carriers primarily to crystalline domains, alignment in amorphous systems can enable phonon-like modes that dominate transport. To our best knowledge, this work is the first to experimentally probe vibrational delocalization using Raman spectroscopy and to demonstrate that alignment alone can govern the dominant carrier in disordered polymers. These findings establish design strategies for fatigue-resistant, high-performance, and recyclable polymer thermal switches for advanced thermal energy transport applications.
{"title":"Strain-Tunable Thermal Conductivity in Largely Amorphous Polyolefin Fibers via Alignment-Induced Vibrational Delocalization.","authors":"Duo Xu, Buxuan Li, You Lyu, Vivian J Santamaria-Garcia, Yuan Zhu, Svetlana V Boriskina","doi":"10.1002/adma.202520371","DOIUrl":"https://doi.org/10.1002/adma.202520371","url":null,"abstract":"<p><p>Developing fast, reversible, and recyclable thermal switches is essential to advance adaptive thermal management. Here, we present a strain-tunable thermal switch based on largely amorphous olefin block copolymer (OBC) fibers, achieving a continuous switching ratio above 2 over 1000 cycles, as well as very short response times below 0.22 s. Using Raman spectroscopy, we quantify vibrational delocalization with increasing strain and demonstrate its direct connection to the observed thermal conductivity changes. We show that unlike prior assumptions linking propagating heat carriers primarily to crystalline domains, alignment in amorphous systems can enable phonon-like modes that dominate transport. To our best knowledge, this work is the first to experimentally probe vibrational delocalization using Raman spectroscopy and to demonstrate that alignment alone can govern the dominant carrier in disordered polymers. These findings establish design strategies for fatigue-resistant, high-performance, and recyclable polymer thermal switches for advanced thermal energy transport applications.</p>","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":" ","pages":"e20371"},"PeriodicalIF":26.8,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146140349","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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