bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Multiresonant Thermally Activated Delayed Fluorescent Dendrimer with Intramolecular Energy Transfer: Application for Efficient Host‐Free Green Solution‐Processed Organic Light‐emitting Diodes
Authors: Wu Sen , Chen Dongyang , Zhang Xiao‐Hong , Sun Dianming , Zysman‐Colman Eli 
Published: January 2025

AbstractThe development of narrowband emissive, bright, and stable solution‐processed organic light‐emitting diodes (SP‐OLEDs) remains a challenge. Here, a strategy is presented that merges within a single emitter a TADF sensitizer responsible for exciton harvesting and an MR‐TADF motif that provides bright and narrowband emission. This emitter design also shows strong resistance to aggregate formation and aggregation‐cause quenching. It is based on a known MR‐TADF emitter DtBuCzB with a donor‐acceptor TADF moiety consisting of either tert‐butylcarbazole donors (tBuCzCO2HDCzB) or second‐generation carbazole‐based donor dendrons (2GtBuCzCO2HDCzB) and a benzoate acceptor. The TADF moiety acts as an exciton harvesting antenna and transfers these excitons via Förster resonance energy transfer to the MR‐TADF emissive core. The SP‐OLEDs with 2GtBuCzCO2HDCzB and tBuCzCO2HDCzB thus show very high maximum external quantum efficiencies (EQEmax of 27.9 and 22.0%) and minimal efficiency roll‐off out to 5000 cd m−2.
Programmable Magnetic Hysteresis in Orthogonally‐Twisted 2D CrSBr Magnets via Stacking Engineering.
Authors: Boix‐Constant Carla , Rybakov Andrey , Miranda‐Pérez Clara , Martínez‐Carracedo Gabriel , Ferrer Jaime , Mañas‐Valero Samuel , Coronado Eugenio 
Published: January 2025

AbstractTwisting 2D van der Waals magnets allows the formation and control of different spin‐textures, as skyrmions or magnetic domains. Beyond the rotation angle, different spin reversal processes can be engineered by increasing the number of magnetic layers forming the twisted van der Waals heterostructure. Here, pristine monolayers and bilayers of the A‐type antiferromagnet CrSBr are considered as building blocks. By rotating 90 degrees these units, symmetric (monolayer/monolayer and bilayer/bilayer) and asymmetric (monolayer/bilayer) heterostructures are fabricated. The magneto‐transport properties reveal the appearance of magnetic hysteresis, which is highly dependent upon the magnitude and direction of the applied magnetic field and is determined not only by the twist‐angle but also by the number of layers forming the stack. This high tunability allows switching between volatile and non‐volatile magnetic memory at zero‐field and controlling the appearance of abrupt magnetic reversal processes at either negative or positive field values on demand. The phenomenology is rationalized based on the different spin‐switching processes occurring in the layers, as supported by micromagnetic simulations. The results highlight the combination between twist‐angle and number of layers as key elements for engineering spin‐switching reversals in twisted magnets, of interest toward the miniaturization of spintronic devices and realizing novel spin textures.
Optical Activity of Chiral Excitons
Authors: Sercel Peter C. , Hautzinger Matthew P. , Song Ruyi , Blum Volker , Beard Matthew C. 
Published: January 2025

AbstractRecent activity in the area of chiroptical phenomena has been focused on the connection between structural asymmetry, electron spin configuration and light/matter interactions in chiral semiconductors. In these systems, spin‐splitting phenomena emerge due to inversion symmetry breaking and the presence of extended electronic states, yet the connection to chiroptical phenomena is lacking. Here, we develop an analytical effective mass model of chiral excitons, parameterized by density functional theory. The model accounts for parity mixing of the band edge Bloch functions resulting from polar distortions, resulting in allowed magnetic dipole transitions. Through the study of a prototypical chiral 2D hybrid perovskite semiconductor, we show that circular dichroism of the chiral exciton and its interband continuum emerges from spin‐splitting via cross‐coupling of Rashba‐like and chiral/helical spin‐texture components. To demonstrate the generality of our approach, and as a counterpoint, we apply our model to describe chiroptical properties of three‐dimensionally confined excitons in perovskite nanocrystals that occur without chiral lattice distortions.
Interfacial Water Regulation for Nitrate Electroreduction to Ammonia at Ultralow Overpotentials
Authors: Wan Yuchi , Pei Maojun , Tang Yixiang , Liu Yao , Yan Wei , Zhang Jiujun , Lv Ruitao 
Published: January 2025

AbstractNitrate electroreduction is promising for achieving effluent waste‐water treatment and ammonia production with respect to the global nitrogen balance. However, due to the impeded hydrogenation process, high overpotentials need to be surmounted during nitrate electroreduction, causing intensive energy consumption. Herein, a hydroxide regulation strategy is developed to optimize the interfacial H2O behavior for accelerating the hydrogenation conversion of nitrate to ammonia at ultralow overpotentials. The well‐designed Ru─Ni(OH)2 electrocatalyst shows a remarkable energy efficiency of 44.6% at +0.1 V versus RHE and a nearly 100% Faradaic efficiency for NH3 synthesis at 0 V versus RHE. In situ characterizations and theoretical calculations indicate that Ni(OH)2 can regulate the interfacial H2O structure with a promoted H2O dissociation process and contribute to the spontaneous hydrogen spillover process for boosting NO3− electroreduction to NH3 at Ru sites. Furthermore, the assembled rechargeable Zn‐NO3−/ethanol battery system exhibits an outstanding long‐term cycling stability during the charge–discharge tests with the production of high‐value‐added ammonium acetate, showing great potential for simultaneously achieving nitrate removal, energy conversion, and chemical synthesis. This work can not only provide a guidance for interfacial H2O regulation in extensive hydrogenation reactions but also inspire the design of a novel hybrid flow battery with multiple functions.
Superior Hydrazine Electrooxidation Activities on Tin and Zirconium Promoted ZSM‐5 Zeolite Catalyst
Authors: Yıldız Derya , Kaya Şefika , Ozok‐Arici Omruye , Caglar Aykut , Kivrak Arif , Kivrak Hilal 
Published: January 2025

AbstractDirect fuel cells, such as direct hydrazine fuel cells (DHFC), are considered environmentally friendly alternative energy technologies with great potential for the future. Hydrazine, used as a liquid fuel, is particularly advantageous due to its high cell voltage and energy density. In this study, the electrocatalytic potential of SnZr/ZSM‐5 catalysts synthesized with wet impregnation at various molar ratios is investigated for hydrazine oxidation. The catalyst is characterized by XPS, ICP‐MS, XRD, FTIR, SEM‐EDX, and TEM techniques. Additionally, thermal characterization of this catalyst is performed with temperature‐programmed reduction (TPR), temperature‐programmed oxidation (TPO), and temperature‐programmed desorption (TPD). The catalytic activities of ZSM‐5‐supported monometallic and bimetallic catalysts are determined using electrochemical measurements such as cyclic voltammetry (CV), chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS) for direct hydrazine fuel cell (DHFC). The highest catalytic activity achieved is 44.874 mA cm−2 for SnZr(50:50)/ZSM‐5 catalyst, revealing that Zr addition to Sn improves the electrocatalytic activity of bimetallic catalysts compared to monometallic catalysts. The long‐term current density and stability of SnZr(50:50)/ZSM‐5 catalyst are taken at 0.6 V. EIS measurements indicated that the lowest charge transfer resistance is at 0.6 V, consistent with CV and CA measurements. SnZr(50:50)/ZSM‐5 provides a new perspective as an anode catalyst for DHFC applications.
Influence of Heat Treatments on the Photocatalytic Activity of TiO2 Surfaces Produced by Direct Laser Interference Patterning
Authors: Fox Tobias , Bonner Fabian Kay , Pauly Christoph , Kickelbick Guido , Mücklich Frank 
Published: January 2025

AbstractDirect laser interference patterning (DLIP) has in previous work shown to be an effective tool for producing photocatalytic surfaces in a single relatively simple processing step. These surfaces can be interesting candidates for antifouling or self‐cleaning surfaces, as well as substrates for photocatalytic water treatment. In this contribution, various heat treatments are performed both during and after the laser processing to create surfaces with even higher photocatalytic activities and to better understand the formation of various process oxides and their effect on the resulting activity. The photocatalytic activity of the samples is measured by methylene blue degradation and correlated to their chemical composition and morphology. Furthermore, a small prototype is built using low‐cost materials to prove the scalability of the approach.
Pump‐Probe Imaging of Ultrafast Laser Percussion Drilling of Glass in Single Pulse, MHz‐ and GHz‐Burst Regimes
Authors: Balage Pierre , Guilberteau Théo , Lafargue Manon , Bonamis Guillaume , Hönninger Clemens , Lopez John , Manek‐Hönninger Inka 
Published: January 2025

AbstractA pump‐probe shadowgraphy study of femtosecond laser percussion drilling on glass samples is reported applying three different operating regimes, which are the standard repetitive single pulse, the MHz‐ and the GHz‐burst modes. The comparison of pump‐probe imaging in the MHz‐burst and the GHz‐burst regimes is demonstrated for the first time to the best of knowledge. Synchronizing a single pulse probe with a pump operating in a burst regime constitutes a real novelty in femtosecond laser micromachining studies. By this means, a better understanding of the drilling process dynamics of the two burst regimes is provided and reveals the differences between these regimes. Especially, the process of through via drillings of different hole depths in the GHz‐burst regime is investigated in sodalime glass. The results of the pump‐probe shadowgraphy show that the ablation plume in the GHz‐burst regime has an essential role in the drilling process as it stops as soon as the plume escapes from the through hole explaining the final hole morphology observed for deep through via drillings.
The Role of Post‐Sintering Heat Treatment on the Phase and Microstructural Development of Nano Cu‐Zno Modified Ceramic Surfaces
Authors: Calis Acikbas Nurcan , Acikbas Gokhan 
Published: January 2025

AbstractThe study examines the effect of heat treatment duration on microstructure and phase evolution concerning Cu content in nano ZnO‐Cu‐modified ceramic glazes. The thermal behavior of the nano Cu‐ZnO added glazes is investigated using heat microscopy and TG/DTA techniques to ascertain the appropriate firing and heat treatment temperature. Glazed tiles are sintered at 1210 °C for 10 min and heat treated at 965 °C for 2, 8, and 32 h. The surfaces are investigated with scanning electron microscopy and X‐ray diffractometer. The evolution of phase and microstructure exhibits variations between sintered and heat‐treated surfaces, dependent upon the concentration of Cu doping and heat treatment duration. The most important evidence is adding Cu into the ZnO‐modified glaze leads to a stacked micro‐nanostructure formation. The results show that while the willemite phase is dominant on the sintered surfaces, the size and quantity of fine plagioclase crystals increased with heat treatment and prolonged heat treatment time. The heat treatment period, depending on copper content, affects microstructure and phase development.
Droplet Microarrays for Miniaturized and High‐Throughput Experiments: Progress and Prospectives
Authors: Kartsev D.D. , Joaquin E Urrutia Gómez , Anna Popova A. , Levkin Pavel A. 
Published: January 2025

AbstractMiniaturization in life sciences and chemical sciences offers substantial advantages to experimental workflows, such as increased throughput, reduced costs, and lower environmental impact. While microtiter plates are effective, further miniaturization is necessary to enhance efficiency and throughput. However, microtiter plates cannot be easily miniaturized to volumes below 5 µL, primarily because adhesive and capillary forces become stronger than the gravitational forces needed to confine the liquid within the wells. To overcome this, the droplet microarray (DMA) is developed, utilizing patterned adhesive regions on a liquid‐repellent background to immobilize and confine sub‐microliter droplets without physical barriers. This unique format enables novel applications such as droplet merging and parallel ultra‐high‐throughput manipulations. This review provides an overview of DMA's diverse applications and highlights the new experimental opportunities it offers, establishing it as a versatile tool for highly miniaturized, high‐throughput biological and chemical experiments. The evolving requirements and future applications of the DMA approach are also discussed.
Preparation of Mesoporous Cu2O Nanospheres for Green Synthesis in the Enantioselective Boron Conjugate Addition of α,β‐Unsaturated Chiral Compounds in Aqueous Phase
Authors: Zhao Xuhong , Ma Lian , Wang Meng , Li Weishuang , Zhang Yaoyao , Li Bojie , Fang Zhongpu , Xiong Bo , Zhu Lei 
Published: January 2025

AbstractChiral organoboron compounds are essential intermediates in various significant reactions. However, there are still few efficient catalysts for their synthesis. This paper reports a novel catalytic material for chiral asymmetric boron conjugate addition reactions: mesoporous Cu2O nanospheres (M−Cu2O). M−Cu2O is approximately 0.55 μm, exhibiting dense and uniformly distributed worm‐like pores. It features a specific surface area of 15.7 m2/g and an average pore size of 14.3 nm. Under the conditions of Toluene:H2O=9:1, with a chiral ligand amount of 3.6 mol% and no additional base, it achieves a high yield (98% yield) and impressive enantioselectivity (99% ee) for the template substrate chalcone using only 3.0 mol% of the catalyst. Notably, the catalyst can be easily recovered and maintains robust catalytic performance after seven cycles, yielding 92% and an ee value of 90%. This work presents a mild and effective method for synthesizing chiral boron compounds in an aqueous phase, significantly enhancing the application potential of mesoporous copper oxide nanospheres.
Nano‐Porous Melt‐Blown Poly(Lactic Acid) Fiber Mat Air Filters for High Efficiency Particulate Capture
Authors: Kalani Sahar , Jubinville Dylan , Mekonnen Tizazu H. 
Published: January 2025

AbstractThis study introduces a two‐step technique for developing nano‐porous, compostable melt‐blown nonwovens with high porosity, specifically engineered for high‐performance particulate capture in air filter applications. The first step entails creating a high melt flow index material by melt‐blending low‐viscosity polylactic acid (PLA) with a sacrificial additive, polyethylene glycol (PEG), of varying molecular weights. Rheological, compatibility, and thermal analyses are conducted on the sample blends. The MFI of the resulting blends ranges from 56 g/10 min (baseline PLA) to 238 g/10 min (PLA/PEG 400–10%), confirming their suitability for the melt‐blowing process. These blends are then formed into nonwoven mats using a twin‐screw extruder, producing microfibers with diameters between 1.05 and 2.64 µm. The second step involves boiling water etching to remove PEG, creating nanopores within the fibers. This etching process leaves a network of nanopores (50–200 nm in size), distributed throughout the microfiber structure. The PLA/PEG 2000 sample exhibits optimal properties, achieving ≈72% particulate capture efficiency for 0.3 µm NaCl particulates during air filtration testing. This study represents an innovative and eco‐friendly approach for creating nano‐porous nonwoven mats with potential applications in air filtration, water filtration, and battery separators, where high porosity is beneficial.
Directed Inward Migration of S‐Vacancy in Bi2S3 QDs for Selective Photocatalytic CO2 to CH3OH
Authors: Wang Jing , Wang Wenlei , Deng Yao , Zhang Zhen , Wang Hui , Wu Yiqiang 
Published: January 2025

AbstractThe directional migration of S‐vacancy is beneficial to the separation of photogenerated carriers and the transition of electrons in semiconductors. In this study, Bix/Bi2−xSy@carboxylic‐cellulose (CC) photocatalyst with bionic chloroplast structure is obtained by electron beam irradiation to induce S‐vacancy in Bi2S3@CC. The results of CO2 photoreduction experiments demonstrate that the reduction rate of CO2 to CH3OH by Bix/Bi2‒xS2.89@CC‐450 samples is 10.74 µmol·g−1·h−1, and the selectivity is 92.82%. The results show that the inward migration behavior of the borderline S‐vacancy (b‐Sv) induces the redistribution of electrons in Bix/Bi2−xSy@CC. The Bi° clusters in Bix/Bi2−xSy@CC is conducive to adsorb CO2, and the internal S‐vacancy (i‐Sv) is conducive to adsorb CH3OH, which accelerate the transfer of gas‐phase products to realize the controllable conversion of CO2 and photoreduction products at the gas–liquid–solid three‐phase interface. This study provides a new idea for the development and utilization of green photocatalysts in clean energy.
Primary Cilia Formation Mediated by Hsa_Circ_0005185/OTUB1/RAB8A Complex Inhibits Prostate Cancer Progression by Suppressing Hedgehog Signaling Pathway
Authors: Fan Aoyu , Zhang Yunyan , Li Yunpeng , Meng Wei , Wu Fan , Pan Wei , Ma Zhongliang , Chen Wei 
Published: January 2025

AbstractProstate cancer (PCa) is one of the most common malignancies for male individuals globally. Androgen deprivation therapy (ADT) initially demonstrated significant efficacy in treating PCa; however, most cases of PCa eventually progress to castration‐resistant prostate cancer (CRPC), which becomes increasingly challenging to manage. Notably, the loss or disruption of primary cilia in PCa cells may play a critical role in the progression of the disease, and there are no reports on the role of circular RNAs in ciliogenesis. Thus, this warrants further investigation.In this study, key circular RNAs linked to prostate cancer progression, and enzalutamide resistance is identified. Specifically, it is found that hsa_circ_0005185 interacts with OTUB1 and RAB8A, serving as a molecular scaffold. Hsa_circ_0005185 mediates the binding of the deubiquitinase OTUB1 to RAB8A, resulting in the deubiquitination of RAB8A. Consequently, the stable expression of RAB8A promotes the regeneration of primary cilia and enhances the production of GLI3R, an inhibitory factor in the Hedgehog signaling pathway, thereby suppressing AR activity and slowing the progression of CRPC.
Metal‐Catalyzed Abiotic Cleavage of C═C Bonds for Effective Fluorescence Imaging of Cu(II) and Fe(III) in Living Systems
Authors: Wang Chunfei , Chen Dandan , Wei Zixiang , Tan Jingyun , Wu Changfeng , Zhang Xuanjun 
Published: January 2025

AbstractImaging abnormal copper/iron with effective fluorescent tools is essential to comprehensively put insight into many pathological events. However, conventional coordination‐based detection is mired in the fluorescence quenching induced by paramagnetic Cu(II)/Fe(III). Moreover, the strong chelating property of the probe will consume dissociative metal ions and inevitably interfere with the physiological microenvironment. Here, a new strategy is developed by employing this aberrant Cu(II)/Fe(III) to catalyze bond cleavage for fluorescent imaging of them. A short series of near‐infrared fluorescent molecules (NIRB1−NIRB6) is devised as substrates, wherein the specific C═C bonds can be effectively cleaved to activate red fluorophore by Cu(II)/Fe(III) catalyzing. Representatively, NIRB1 is applied for fluorescent imaging of Cu(II)/Fe(III) in living cells, zebrafish, and Alzheimer's disease (AD)‐afflicted mouse brains which is of significance to monitor metal safety. The successful cleavage of C═C bonds catalyzed by Cu(II)/Fe(III) enriches the application of abiotic bond cleavage reactions in metal detection, and may also inspire the development of fluorescent tools for the future diagnosis and therapy of diseases.
Lattice Oxygen Redox Dynamics in Zeolite‐Encapsulated CsPbBr3 Perovskite OER Electrocatalysts
Authors: Ren Xiangrong , Zhai Yiyue , Yang Na , Wang Bolun , Liu Shengzhong (Frank) 
Published: January 2025

AbstractUnderstanding the oxygen evolution reaction (OER) mechanism is pivotal for improving the overall efficiency of water electrolysis. Despite methylammonium lead halide perovskites (MAPbX3) have shown promising OER performance due to their soft‐lattice nature that allows lattice‐oxygen oxidation of active α‐PbO2 layer surface, the role of A‐site MA or X‐site elements in the electrochemical reconstruction and OER mechanisms has yet to be explored. Here, it is demonstrated that the OER mechanism of perovskite@zeolite composites is intrinsically dominated by the A‐site group of lead‐halide perovskites, while the type of X‐site halogen is crucial for the reconstruction kinetics of the composites. Using CsPbBrxI3‐x@AlPO‐5 (x = 0, 1, 2, 3) as a model OER catalyst, it is found that the CsPbBr3@AlPO‐5 behaves oxygen‐intercalation pseudocapacitance during surface restructuring due to absence of halogen‐ion migration and phase separation in the CsPbBr3, achieving a larger diffusion rate of OH− within the core‐shell structure. Moreover, distinct from the single‐metal‐site mechanism of MAPbBr3@AlPO‐5, experimental and theoretical investigations reveal that the soft lattice nature of CsPbBr3 triggers the oxygen‐vacancy‐site mechanism via the CsPbBr3/α‐PbO2 interface, resulting in excellent OER performance. Owing to the variety and easy tailoring of lead‐halide perovskite compositions, these findings pave a way for the development of novel perovskite@zeolite type catalysts for efficient oxygen electrocatalysis.
Optimized K+ Deposition Dynamics via Potassiphilic Porous Interconnected Mediators Coordinated by Single‐Atom Iron for Dendrite‐Free Potassium Metal Batteries
Authors: Lin Tzu‐Chi , Yang Yi‐Chun , Tuan Hsing‐Yu 
Published: January 2025

AbstractPotassium metal batteries are emerging as a promising high‐energy density storage solution, valued for their cost‐effectiveness and low electrochemical potential. However, understanding the role of potassiphilic sites in nucleation and growth remains challenging. This study introduces a single‐atom iron, coordinated by nitrogen atoms in a 3D hierarchical porous carbon fiber (Fe─N‐PCF), which enhances ion and electron transport, improves nucleation and diffusion kinetics, and reduces energy barriers for potassium deposition. Molten potassium infusion experiments confirm the Fe─N‐PCF's strong potassiphilic properties, accelerating adsorption kinetics and improving potassium deposition performance. According to the Scharifker‐Hills model, traditional carbon fiber substrates without potassiphilic sites cause 3D instantaneous nucleation, leading to dendritic growth. In contrast, the integration of single‐atom and hierarchical porosity promotes uniform 3D progressive nucleation, leading to dense metal deposition, as confirmed by dimensionless i2/imax2 versus t/tmax plots and real‐time in situ optical microscopy. Consequently, in situ X‐ray diffraction demonstrated stable potassium cycling for over 1900 h, while the Fe─N‐PCF@K||PTCDA full cell retained 69.7% of its capacity after 2000 cycles (72 mAh g−1), with a low voltage hysteresis of 0.876 V, confirming its strong potential for high energy density and extended cycle life, paving the way for future advancements in energy storage technology.