bluuebunny/crossref_metadata_2025_split huggingface dataset:
Buried Interface Engineering‐Assisted Defects Control and Crystallization Manipulation Enables Stable Perovskite Solar Cells with Efficiency Exceeding 25%
Authors: Chen Pengxu , Zheng Qingshui , Jin Zhihang , Wang Yuhong , Wang Shibo , Sun Weihai , Pan Weichun , Wu Jihuai 
Published: October 2024

AbstractThe presence of various defects within the electron transport layer (ETL), the perovskite (PVK) layer, and their interfaces significantly affects the efficiency, hysteresis, and stability of perovskite solar cells (PSCs) in n–i–p structure. Herein, a defect passivation strategy employing potassium 4‐methoxysalicylate (MSAK) is utilized to efficiently modulate the defects in the ETL, PVK, and ETL/PVK interface. The functional groups −COO− and −OH in MSAK molecules, along with the K+ cations, effectively reduce the defects of tin oxide (SnO2) and improve the electron transport properties. Importantly, the MSAK‐SnO2 provides a favorable substrate for the growth of highly crystallization and dense perovskite layers. The MSAK molecules also significantly passivate the bottom interface defects of the PVK layer by coordinating with under‐coordinated Pb2+ ions. Furthermore, K+ cations can migrate into the PVK layer, further enhancing crystallization and improving the photovoltaic performance of PSC devices. PSCs fabricated using the defect passivation strategy based on MSAK achieve a remarkable power conversion efficiency (PCE) of 25.47%, alongside reduced hysteresis and enhanced stability. After being stored under ambient conditions for 60 days, the device with MSAK maintains nearly 90% of its initial PCE, whereas the PCE of the pristine device decreases to 69.7% after aging.
Glycosaminoglycan Concentration and Sulfation Patterns of Biohybrid Polymer Matrices Direct Microvascular Network Formation and Stability
Authors: Limasale Yanuar Dwi Putra , Fusenig Maximilian , Samulowitz Marten , Atallah Passant , Sievers Jana , Dennison Nicholas , Freudenberg Uwe , Friedrichs Jens , Werner Carsten 
Published: October 2024

AbstractComplexation with sulfated glycosaminoglycans (GAGs) regulates the signaling of pro‐angiogenic growth factors in vivo. To use this principle in modulating microvascular network formation and stability in vitro, a library of biohybrid hydrogels containing heparin, a highly sulfated GAG, or its selectively desulfated derivatives, is prepared. The hydrogels are applied to systematically investigate the effects of GAG concentration and sulfation patterns on embedded cultures of human umbilical vein endothelial cells (HUVECs) and cocultures of HUVECs with mesenchymal stromal cells (MSCs). Formation and morphology of microvascular networks, stromal cell expansion, and extracellular matrix (ECM) protein deposition are found to be significantly influenced by the hydrogel's GAG concentrations and sulfation patterns, presumably through differences in the resulting availability and bioactivity of GAG‐binding growth factors. In particular, cocultures in hydrogels with either low heparin concentration (500 µm) or higher concentrations of heparin desulfated at the 6O or N position resulted in the formation of dense, stable microvascular networks. The respective conditions also displayed enhanced stromal cell proliferation and ECM protein deposition, leading to increased matrix stiffness. Therefore, precisely tuning the affinity of biohybrid materials for pro‐angiogenic factors effectively enhances the vascularization of engineered tissue constructs in vitro.
How Binder Nanofibration Affects the Active‐Material Microenvironment in Battery Electrodes?
Authors: Ma Chengye , Cai Wenrui , Zhu Zhiwei , Ji Zhongfeng , Yang Jiarui , Li Hua , Wen Guojiang , Zhao Zhiyu , Fu Xuewei , Yang Wei , Wang Yu 
Published: October 2024

AbstractBinder morphology is a critical factor determining the electrode microstructures and properties, which fundamentally controls the charge transport and mechanical performance of the resultant battery. In this case, polytetrafluoroethylene (PTFE) binder is of great interest as it exhibits unique nanofibration capability and mechanical flexibility, which has been broadly applied for dry processing of battery electrodes. However, there is a lack of fundamental study on how binder nanofibration affects the electrochemomechanical properties of electrodes. Here, similar to the fibrous structures of the cell microenvironment, the attempt is to answer this question from the viewpoint of active‐material microenvironment (ME@AM). First, the PTFE nanofibration degree is adjusted by electrode calendering treatment and binder loading. Second, the microstructures, mechanical relaxation behavior, bending capability, and liquid–electrolyte wetting capability of the fibrous ME@AM are comparatively investigated in detail by dynamic mechanical testing. Finally, the superiority of highly fibrous ME@AM in electrochemical performance is confirmed by the C‐rate and cycling stability testing of half‐cells. This study indicates that a highly fibrous ME@AM can remarkably improve the electrochemomechanical properties of electrodes by enhanced capillary action with liquid electrolyte, good electrode flexibility, and structural stability under compression.
Host‐Guest Systems Enable Efficient Organic Afterglow via a Facile Spraying Method
Authors: Man Zhongwei , Chen Zhong , Tao Wenhao , Lv Zheng , Teng Feng , Cui Qiuhong , Fu Hongbing , Liao Qing , Tang Aiwei 
Published: October 2024

AbstractUnlocking the afterglow properties of the fluorescence molecules at room temperature is an urgent challenge. Herein, inks prepared with dimethyl terephthalate (DTT) and carbazole (Cz) analogs with heteroatom (C, S, and O) substituents on the N as host and guest molecules can be directly sprayed onto different substrates to unlock the excitation‐wavelength dependent (Ex‐De) afterglow characteristics of the guest compound. Additionally, with the increase in the number of lone pair electrons, spin‐orbit coupling (SOC) increases, resulting in a longer afterglow duration lasting up to 4.5 s with Φp>27%. Theory calculations and experiments indicate that the afterglow originated from the interactions between the host and guest molecules restricting the non‐radiative transition of the triplet excitons. Different Ex (with watershed at 310 nm) lead to the variation in the conformation of the S0DTT and S1DTT, which in turn affects the strength of host‐guest interactions and contributes to the Ex‐De characteristics. Benefiting from facile preparation, substrate‐independent applicability, and Ex‐De characteristics, the afterglow samples are demonstrated for applications in multilevel information security fields. This work proposes a general strategy for unlocking the afterglow emission of traditional molecules, which is valuable for the discovery of high‐performance afterglow materials in the future.
Energy‐Harvesting Carbon Aerogel Nanofiber Metafabric for High‐Efficiency Thermoregulation
Authors: Tian Yucheng , Chen Yixiao , Wang Sai , Wang Xianfeng , Yu Jianyong , Zhang Shichao , Ding Bin 
Published: October 2024

AbstractMaintaining body temperature within safe and comfortable range is crucial; however, thermoregulatory materials face challenges in variable environments and extreme application scenarios. Here, a unique dual air‐gelation strategy is developed to synthesize carbon aerogel nanofiber metafabric for energy‐harvesting thermoregulation. By manipulating polyacrylonitrile/water interaction and charge density of the solution, phase separation and Coulombic repulsion in electrospun jets are promoted, forming curly nanofibers with internal nanopores (size 30–60 nm) that entangle to create nanofibrous dual‐aerogel structure; the carbon aerogel nanofiber metafabric is obtained following pre‐oxidation and optimized graphitization. The resulting metafabric exhibits high elasticity, robust temperature resistance from −196 to 600 °C, exceptional thermal insulation performance, high‐efficiency electrothermal capability (adjustable from 15 to 150 °C), and photothermal property (radiation raised temperature by 22 °C). This work provides rich possibilities to develop advanced carbon nanomaterials for thermal management.
Oxidization and Salting Out Synergistically Induced Highly Elastic, Conductive, and Sensitive Polyvinyl Alcohol Hydrogels
Authors: Zhang Yu , Xiong Yingshuo , Li Xusheng , Zhang Shaohua , Xu Wenlong , Chen Hou , Xu Lu 
Published: October 2024

AbstractAlthough a variety of functional polyvinyl alcohol hydrogels (PVAHG) with attractive mechanical and electrochemical properties have been fabricated using traditional freeze‐thaw cycling, this approach is usually relatively complicated, time‐consuming and relies essentially on the use of PVA chains with a weight‐average molecular weight above 60000. Here a new strategy capable of assembling relatively low‐molecular‐weight (≈30000) polyvinyl alcohol (PVA) into highly crosslinked physical hydrogels is developed. By exploiting ammonium persulfate as a simple and versatile oxidant to simultaneously provide oxidizing and salting‐out effects to the polymeric building blocks, PVAHG with excellent and tailorable elasticity, conductivity and sensitivity can be achieved building on the strong intermolecular hydrogen bonding between the newly formed ─COOH and ─CHO terminations and the inclusion of abundant inorganic ions. The hydrogels cannot only act as effective wearable wireless sensors for detecting output resistance signals but also be further employed to construct a motion‐mapped self‐propelled robotic arm that is able to instantly and accurately map the motion of human bodies. This study may provide new insights into polymer chemistry, hydrogel sensing, and soft robotics.
Continuous Preparation of the Record Strength and Toughness Hydrogel Fibers with a Homogeneous Crosslinked Network by Microcrystalline Dispersed Growth
Authors: Zhou Zhou , Chen Shiyan , Han Zhiliang , Qu Xiangyang , Deng Lili , Song Jiale , Zhang Tao , Guan Mengyao , Wang Huaping 
Published: October 2024

AbstractHomogeneous crosslinked networks can achieve a balance between the strength and toughness of various biological materials, yet continuous synthesis of such networks remains challenging. Here, a strategy involving microcrystal dispersed growth to continuously fabricate hydrogel fibers with a homogeneous crosslinked network through wet spinning is reported. Rapid phase separation induced by solvent exchange under dense entanglement results in a uniform microcrystalline crosslinked network. Salting‐out induced crystal growth within the densified structure, while orientation and structural densification are achieved with the presence of a sacrificial salt template. Through the integration of nucleation, growth, and orientation, the homogeneous crosslinked network is constructed within the hydrogel matrix. Therefore, the strongest hydrogel fiber so far, which also exhibits a range of tunable properties, including strength (0.32 –141.66 MPa) and toughness (0.43 –157.93 MJ m⁻3) across a high‐water content range (40.6% to 86.8%) is reported. This design approach provided a viable strategy for the continuous preparation of ultra‐strong and tough hydrogels with a homogeneous crosslinked network.
Collaborative Enhancement of Diabetic Wound Healing and Skin Regeneration by Recombinant Human Collagen Hydrogel and hADSCs
Authors: Kong Weishi , Bao Yulu , Li Wei , Guan Dingding , Yin Yating , Xiao Yongqiang , Zhu Shihui , Sun Yu , Xia Zhaofan 
Published: October 2024

AbstractStem cell‐based therapies hold significant promise for chronic wound healing and skin appendages regeneration, but challenges such as limited stem cell lifespan and poor biocompatibility of delivery systems hinder clinical application. In this study, an in situ delivery system for human adipose‐derived stem cells is developed (hADSCs) to enhance diabetic wound healing. The system utilizes a photo‐crosslinking recombinant human type III collagen (rHCIII) hydrogel to encapsulate hADSCs, termed the hADSCs@rHCIII hydrogel. This hydrogel undergoes local crosslinking at the wound site, establishing a sturdy 3D niche suitable for stem cell function. Consequently, the encapsulated hADSCs exhibit strong attachment and spreading within the hydrogels, maintaining their proliferation, metabolic activity, and viability for up to three weeks in vitro. Importantly, in vivo studies demonstrate that the hADSCs@rHCIII hydrogel achieves significant in situ delivery of stem cells, prolonging their retention within the wound. This ultimately enhances their immunomodulatory capabilities, promotes neovascularization and granulation tissue formation, facilitates matrix remodeling, and accelerates healing in a diabetic mouse wound model. Collectively, these findings highlight the potential of the conveniently‐prepared and user‐friendly hADSCs@rHCIII hydrogel as a promising therapeutic approach for diabetic wound treatment and in situ skin regeneration.
Iron‐MOFs for Biomedical Applications
Authors: Yu Zhihao , Lepoitevin Mathilde , Serre Christian 
Published: October 2024

AbstractOver the past two decades, iron‐based metal–organic frameworks (Fe‐MOFs) have attracted significant research interest in biomedicine due to their low toxicity, tunable degradability, substantial drug loading capacity, versatile structures, and multimodal functionalities. Despite their great potential, the transition of Fe‐MOFs–based composites from laboratory research to clinical products remains challenging. This review evaluates the key properties that distinguish Fe‐MOFs from other MOFs and highlights recent advances in synthesis routes, surface engineering, and shaping technologies. In particular, it focuses on their applications in biosensing, antimicrobial, and anticancer therapies. In addition, the review emphasizes the need to develop scalable, environmentally friendly, and cost‐effective production methods for additional Fe‐MOFs to meet the specific requirements of various biomedical applications. Despite the ability of Fe‐MOFs–based composites to combine therapies, significant hurdles still remain, including the need for a deeper understanding of their therapeutic mechanisms and potential risks of resistance and overdose. Systematically addressing these challenges could significantly enhance the prospects of Fe‐MOFs in biomedicine and potentially facilitate their integration into mainstream clinical practice.
Precision Photothermal Therapy at Mild Temperature: NIR‐II Imaging‐Guided, H2O2‐Responsive Stealth Nanobomb
Authors: Ma Gongcheng , Ding Qihang , Wang Yue , Zhang Zhiwei , Zhang Yuding , Shi Hui , Cai Lintao , Gong Ping , Zhang Pengfei , Cheng Zhen , Kim Jong Seung 
Published: October 2024

AbstractThe therapeutic efficacy of photothermal therapy (PTT) under mild temperatures (<45 °C) is hindered as cancer cells can activate heat shock proteins (HSPs) to mend fever‐type cellular damage swiftly. The previous attempt fabricated first‐generation nanobombs (nanobomb1G) by self‐assembly of polymeric NIR‐II AIEgens and carbon monoxide (CO) carrier polymer mPEG(CO) to inhibit the expression of HSPs after intratumor injection. A new generation nanobomb (Stealth NanoBomb (SNB)) is developed by self‐assembling small molecular NIR‐II AIEgens with CO carrier polymer PLGA(CO) coated by PEG‐lipid. This design allows for intravenous administration, enabling the SNB to circulate safely in the bloodstream and selectively target cancer cells. Upon accumulation in tumors, the SNB releases CO to effectively suppress HSP expression, enhancing the therapeutic efficacy of mild‐temperature PTT. Compared to the previous generation, the SNB offers a safer, more stable, and more efficient CO gas/drug co‐delivery system for cancer treatment. This work represents a significant advancement in PTT, providing a promising strategy for enhanced antitumor therapy with reduced systemic toxicity.
A Self‐Healing, Flowable, Yet Solid Electrolyte Suppresses Li‐Metal Morphological Instabilities
Authors: He Yubin , Wang Chunyang , Lin Ruoqian , Hu Enyuan , Trask Stephen E. , Li Ju , Xin Huolin L. 
Published: October 2024

AbstractLithium metal (Li0) solid‐state batteries encounter implementation challenges due to dendrite formation, side reactions, and movement of the electrode–electrolyte interface in cycling. Notably, voids and cracks formed during battery fabrication/operation are hot spots for failure. Here, a self‐healing, flowable yet solid electrolyte composed of mobile ceramic crystals embedded in a reconfigurable polymer network is reported. This electrolyte can auto‐repair voids and cracks through a two‐step self‐healing process that occurs at a fast rate of 5.6 µm h−1. A dynamical phase diagram is generated, showing the material can switch between liquid and solid forms in response to external strain rates. The flowability of the electrolyte allows it to accommodate the electrode volume change during Li0 stripping. Simultaneously, the electrolyte maintains a solid form with high tensile strength (0.28 MPa), facilitating the regulation of mossy Li0 deposition. The chemistries and kinetics are studied by operando synchrotron X‐ray and in situ transmission electron microscopy (TEM). Solid‐state NMR reveals a dual‐phase ion conduction pathway and rapid Li+ diffusion through the stable polymer‐ceramic interphase. This designed electrolyte exhibits extended cycling life in Li0–Li0 cells, reaching 12 000 h at 0.2 mA cm−2 and 5000 h at 0.5 mA cm−2. Furthermore, owing to its high critical current density of 9 mA cm−2, the Li0–LiNi0.8Mn0.1Co0.1O2 (NMC811) full cell demonstrates stable cycling at 5 mA cm−2 for 1100 cycles, retaining 88% of its capacity, even under near‐zero stack pressure conditions.
In‐Situ Anchoring of Co Single‐Atom Synergistically with Cd Vacancy of Cadmium Sulfide for Boosting Asymmetric Charge Distribution and Photocatalytic Hydrogen Evolution
Authors: Yang Kaihua , Huang Yicai , Wang Tantan , Li Yiming , Du Yating , Ling Juan , Fan Ziyi , Zhang Chang , Ma Chi 
Published: October 2024

AbstractIn the context of reshaping the energy pattern, designing and synthesizing high‐performance noble metal‐free photocatalysts with ultra‐high atomic utilization for hydrogen evolution reaction (HER) still remains a challenge. In a streamlined synthesis process, in‐situ single atom anchoring is performed in parallel with HER by irradiating a precursory defect‐state CdS/Co suspension (Co‐DCdS‐Ss) system under simulated sunlight and the in‐situ synthesizing single‐atom Co photocatalyst (Co5:DCdS) exhibits further improved catalytic performance (60.10 mmol g−1 h−1) compared with Co‐DCdS‐Ss (18.09 mmol g−1 h−1), reaching an apparent quantum yield of 57.6% at 500 nm and a solar‐chemical energy conversion efficiency (SCC) of 6.26% at AM 1.5G. In‐depth characterization tests and density functional theory (DFT) calculations prove that the anchoring of Co single atom deepens the asymmetric charge distribution of the two‐coordination S atom adjacent to the cadmium vacancy (VCd). The synergy between electron delocalization VCd and Co single atom on the catalyst surface is constructed, which bifunctional sites responsible for boosting water adsorption‐dissociation and hydrogen evolution. This study advances the understanding of the underlying mechanisms of synergy between surface defects and metal single atoms and opens a new horizon for the development of advanced materials in the field of photocatalysis.
Ultrahigh Energy‐Storage in Dual‐Phase Relaxor Ferroelectric Ceramics
Authors: Xiong Xin , Liu Hui , Zhang Ji , da Silva Lucas Lemos , Sheng Zhonghui , Yao Yonghao , Wang Ge , Hinterstein Manuel , Zhang Shujun , Chen Jun 
Published: October 2024

AbstractHigh‐performance dielectric energy‐storage ceramics are beneficial for electrostatic capacitors used in various electronic systems. However, the trade‐off between reversible polarizability and breakdown strength poses a significant challenge in simultaneously achieving high energy density and efficiency. Here a strategy is presented to address this issue by constructing a dual‐phase structure through in situ phase separation. (Bi0.5Na0.5)TiO3‐BaTiO3‐based relaxor ferroelectric ceramics are developed, creating a grain‐separated dual perovskite phase structure using a facile solid‐state reaction method. These ceramics feature two interactive relaxor phases with diversified nanoscale polar structures and heterogeneous grain boundaries, synergistically contributing to high polarization with low hysteresis, substantially increased resistivity, and suppressed electrostrain. Remarkably, a record‐high energy density of 23.6 J cm−3 with a high efficiency of 92% under 99 kV mm−1 is achieved in the bulk ceramic capacitor. This strategy holds promise for enhancing overall energy‐storage performance and related functionalities in ferroelectrics.
Dynamically Favorable Ion Channels Enabled by a Hybrid Ionic‐Electronic Conducting Film toward Highly Reversible Zinc Metal Anodes
Authors: Li Huanhuan , Li Jinlong , Wei Chunyan , Wang Yantao , Wang Shiyu , Chen Yuxin , Bai Guangyue , Zhuo Kelei , Bai Zhengyu , Lu Jun 
Published: October 2024

AbstractAqueous zinc ion batteries show great promise for future applications due to their high safety and ecofriendliness. However, nonuniform dendrite growth and parasitic reactions on the Zn anode have severely impeded their use. Herein, a hybrid ionic‐electronic conducting ink composed of graphene‐like carbon nitride (g‐C3N4) and conductive polymers (CP) of poly(3,4ethylenedioxythiophene)‐poly(styrenesulfonate) (PEDOT:PSS) is introduced to Zn anode using a scalable spray‐coating strategy. Notably, the g‐C3N4 promotes a screening effect, disrupting the coulombic interaction between the PEDOT+ segments and PSS− chains within CP, thereby reducing interfacial resistance and homogenizing the surface electric field distribution of the Zn anode. Furthermore, the abundant N‐containing species and ─SO3− groups in g‐C3N4/CP exhibit strong zincophilicity, which accelerates the diffusion of Zn2+ and disrupts the solvation structure of Zn(H2O)62+, thus improving the Zn2+ transfer capability. Consequently, the g‐C3N4/CP can powerfully stabilize the Zn2+ flux and thus enable a high coulombic efficiency of 99.47% for 1500 cycles and smooth Zn plating/stripping behaviors more than 3000 h at a typical current density of 1 mA cm−2. These findings shed new light on the Zn electrodeposition process under the mediation of g‐C3N4/CP and offer sustainability considerations in designing more stable Zn‐metal anodes with enhanced reversibility.
Efficient, Stable Blue Light‐Emitting Diodes Enabled by Heterostructural Alteration of ZnSeTe Quantum Dot and Functionalization of ZnMgO
Authors: Yoon Suk‐Young , Kim Yang‐Hee , Lee Sun‐Hyoung , Yang Hyungmin , Jo Dae‐Yeon , Kim Hyun‐Min , Kim Yuri , Park Seong Min , Choi Sin Won , Yang Heesun 
Published: October 2024

AbstractEnvironment‐benign ZnSeTe quantum dots (QDs) are regarded promising blue electroluminescent (EL) emitters alternative to Cd‐based ones for the next‐generation QD‐display platform. Herein, the core/shell heterostructural variation of blue‐emitting ternary ZnSeTe QDs by manipulating ZnSeTe core size (small versus large) and ZnSe inner shell thickness (thin versus thick), while ZnS outer shell thickness remains unaltered, is explored. EL outcomes of the resulting core/shell QDs having photoluminescence quantum yields of 59−80% within the blue color regime (454−463 nm) are found to be dependent on their heterostructural dimension, exhibiting the highest performances of 31709 cd m−2 in luminance and 11.4% in external quantum efficiency (EQE) from large‐ZnSeTe/thick‐ZnSe/ZnS QDs. Furthermore, to address the chronic issues of excessive electron injection and exciton quenching at emitting layer/electron transport layer (ETL) interface, the surface of ZnMgO (ZMO) nanoparticle (NP) is modified by bicarbonate functional species. Bicarbonate passivation not only leads to the effective reduction of defective sites on the ZMO NP surface toward the suppression of exciton quenching but induces the upshift of ETL band alignment in favor of charge balance. As a result, the optimized blue device incorporated with bicarbonate‐functionalized ZMO NPs delivers a peak luminance of 39739 cd m−2 and a maximum EQE of 17.1%.