bluuebunny/crossref_metadata_2025_split huggingface dataset:
Quasi‐CW Amplified Spontaneous Emission in Air‐Processed Quasi‐2D Perovskite Thin Films with High Stability
Authors: Zhang Xiaowei , Li Yuanzhao , He Guo , Xia Lifen , Qiao Xianfeng , Zhang Dengliang , Yang Dezhi , Chen Jiangshan , Ma Dongge , Peng Junbiao 
Published: January 2024

AbstractDue to the hydrophobic organic cations, quasi‐two‐dimensional (quasi‐2D) lead halide perovskite materials have shown better moisture resistance. However, the inappropriate multiphase structure in the quasi‐2D perovskite films seriously affects the efficient transport of energy from low‐n domains to high‐n domains, especially when prepared in air. Herein, the study develops efficient quasi‐2D perovskite films in 30% ± 10% humidity and studies their amplified spontaneous emission (ASE) properties. It can be seen that the phase disproportionation of the quasi‐2D perovskite films prepared in air is greatly suppressed by manipulating the crystallization kinetics of the multiphase structure via using the organic additive benzimidazole (BI), thereby enabling a narrowed phase distribution. Due to the improvement in energy transfer efficiency, surface roughness, and humidity stability, the ASE with a low threshold of 13.4 µJ cm−2 is realized under the quasi‐continuous pumping condition, which is significantly <28.8 µJ cm−2 of the pristine film. Furthermore, the introduction of BI organic additive enhanced the number of peak intensity half‐decay pulses to as high as 5.6 × 107, indicating a good operating stability of the BI‐treated films. This work suggests that the BI‐treated quasi‐2D perovskite films provide the possibility for preparing high‐performance lasers in air.
Multienzyme Active Manganese Oxide Alleviates Acute Liver Injury by Mimicking Redox Regulatory System and Inhibiting Ferroptosis
Authors: Wu Aimin , Li Min , Chen Yinyin , Zhang Wei , Li Haoran , Chen Junzhou , Gu Ke , Wang Xianxiang 
Published: January 2024

AbstractDrug‐induced liver injury (DILI) is a severe condition characterized by impaired liver function and the excessive activation of ferroptosis. Unfortunately, there are limited options currently available for preventing or treating DILI. In this study, MnO2 nanoflowers (MnO2Nfs) with remarkable capabilities of mimicking essential antioxidant enzymes, including catalase, superoxide dismutase (SOD), and glutathione peroxidase are successfully synthesized, and SOD is the dominant enzyme among them by density functional theory. Notably, MnO2Nfs demonstrate high efficiency in effectively eliminating diverse reactive oxygen species (ROS) such as hydrogen peroxide (H2O2), superoxide anion (O2•−), and hydroxyl radical (•OH). Through in vitro experiments, it is demonstrated that MnO2Nfs significantly enhance the recovery of intracellular glutathione content, acting as a potent inhibitor of ferroptosis even in the presence of ferroptosis activators. Moreover, MnO2Nfs exhibit excellent liver accumulation properties, providing robust protection against oxidative damage. Specifically, they attenuate acetaminophen‐induced ferroptosis by inhibiting ferritinophagy and activating the P62‐NRF2‐GPX4 antioxidation signaling pathways. These findings highlight the remarkable ROS scavenging ability of MnO2Nfs and hold great promise as an innovative and potential clinical therapy for DILI and other ROS‐related liver diseases.
Sr4Al2O7: A New Sacrificial Layer with High Water Dissolution Rate for the Synthesis of Freestanding Oxide Membranes
Authors: Nian Leyan , Sun Haoying , Wang Zhichao , Xu Duo , Hao Bo , Yan Shengjun , Li Yueying , Zhou Jian , Deng Yu , Hao Yufeng , Nie Yuefeng 
Published: January 2024

AbstractFreestanding perovskite oxide membranes have drawn great attention recently since they offer exceptional structural tunability and stacking ability, providing new opportunities in fundamental research and potential device applications in silicon‐based semiconductor technology. Among different types of sacrificial layers, the (Ca, Sr, Ba)3Al2O6 compounds are most widely used since they can be dissolved in water and prepare high‐quality perovskite oxide membranes with clean and sharp surfaces and interfaces; However, the typical transfer process takes a long time (up to hours) in obtaining millimeter‐size freestanding membranes, let alone realize wafer‐scale samples with high yield. Here, a new member of the SrO‐Al2O3 family, Sr4Al2O7 is introduced, and its high dissolution rate, ≈10 times higher than that of Sr3Al2O6 is demonstrated. The high‐dissolution‐rate of Sr4Al2O7 is most likely related to the more discrete Al‐O networks and higher concentration of water‐soluble Sr‐O species in this compound. This work significantly facilitates the preparation of freestanding membranes and sheds light on the integration of multifunctional perovskite oxides in practical electronic devices.
Control of Charge‐Spin Interconversion in van der Waals Heterostructures with Chiral Charge Density Waves
Authors: Chi Zhendong , Lee Seungjun , Yang Haozhe , Dolan Eoin , Safeer C. K. , Ingla‐Aynés Josep , Herling Franz , Ontoso Nerea , Martín‐García Beatriz , Gobbi Marco , Low Tony , Hueso Luis E. , Casanova Fèlix 
Published: January 2024

AbstractA charge density wave (CDW) represents an exotic state in which electrons are arranged in a long‐range ordered pattern in low‐dimensional materials. Although the understanding of the fundamental character of CDW is enriched after extensive studies, its practical application remains limited. Here, an unprecedented demonstration of a tunable charge‐spin interconversion (CSI) in graphene/1T‐TaS2 van der Waals heterostructures is shown by manipulating the distinct CDW phases in 1T‐TaS2. Whereas CSI from spins polarized in all three directions is observed in the heterostructure when the CDW phase does not show commensurability, the output of one of the components disappears, and the other two are enhanced when the CDW phase becomes commensurate. The experimental observation is supported by first‐principles calculations, which evidence that chiral CDW multidomains in the heterostructure are at the origin of the switching of CSI. The results uncover a new approach for on‐demand CSI in low‐dimensional systems, paving the way for advanced spin‐orbitronic devices.
Beyond Conventional Carbon Activation: Creating Porosity without Etching Using Cesium Effect
Authors: Li Jiaxin , Xu Yaolin , Li Pengzhou , Völkel Antje , Saldaña Fernando Igoa , Antonietti Markus , López‐Salas Nieves , Odziomek Mateusz 
Published: January 2024

AbstractFacile synthesis of porous carbon with high yield and high specific surface area (SSA) from low‐cost molecular precursors offers promising opportunities for their industrial applications. However, conventional activation methods using potassium and sodium hydroxides or carbonates suffer from low yields (<20%) and poor control over porosity and composition especially when high SSAs are targeted (>2000 m2 g−1) because nanopores are typically created by etching. Herein, a non‐etching activation strategy is demonstrated using cesium salts of low‐cost carboxylic acids as the sole precursor in producing porous carbons with yields of up to 25% and SSAs reaching 3008 m2 g−1. The pore size and oxygen content can be adjusted by tuning the synthesis temperature or changing the molecular precursor. Mechanistic investigation unravels the non‐classical role of cesium as an activating agent. The cesium compounds that form in situ, including carbonates, oxides, and metallic cesium, have extremely low work function enabling electron injection into organic/carbonaceous framework, promoting condensation, and intercalation of cesium ions into graphitic stacks forming slit pores. The resulting porous carbons deliver a high capacity of 252 mAh g−1 (567 F g−1) and durability of 100 000 cycles as cathodes of Zn‐ion capacitors, showing their potential for electrochemical energy storage.
3D Noble‐Metal Nanostructures Approaching Atomic Efficiency and Atomic Density Limits
Authors: Liu Shangheng , Huang Wei‐Hsiang , Meng Shuang , Jiang Kezhu , Han Jiajia , Zhang Qiaobao , Hu Zhiwei , Pao Chih‐Wen , Geng Hongbo , Huang Xuan , Zhan Changhong , Yun Qinbai , Xu Yong , Huang Xiaoqing 
Published: January 2024

AbstractNoble metals have been widely used in catalysis, however, the scarcity and high cost of noble metal motivate researchers to balance the atomic efficiency and atomic density, which is formidably challenging. This article proposes a robust strategy for fabricating 3D amorphous noble metal‐based oxides with simultaneous enhancement on atomic efficiency and density with the assistance of atomic channels, where the atomic utilization increases from 18.2% to 59.4%. The unique properties of amorphous bimetallic oxides and formation of atomic channels have been evidenced by detailed experimental characterizations and theoretical simulations. Moreover, the universality of the current strategy is validated by other binary oxides. When Cu2IrOx with atomic channels (Cu2IrOx‐AE) is used as catalyst for oxygen evolution reaction (OER), the mass activity and turnover frequency value of Cu2IrOx‐AE are 1–2 orders of magnitude higher than CuO/IrO2 and Cu2IrOx without atomic channels, largely outperforming the reported OER catalysts. Theoretical calculations reveal that the formation of atomic channels leads to various Ir sites, on which the proton of adsorbed *OH can transfer to adjacent O atoms of [IrO6]. This work may attract immediate interest of researchers in material science, chemistry, catalysis, and beyond.
Amorphous MnO2 Lamellae Encapsulated Covalent Triazine Polymer‐Derived Multi‐Heteroatoms‐Doped Carbon for ORR/OER Bifunctional Electrocatalysis
Authors: Huo Liping , Lv Minghui , Li Mingjin , Ni Xuepeng , Guan Jingyu , Liu Jian , Mei Shuxing , Yang Yuqi , Zhu Miaomiao , Feng Qichun , Geng Peng , Hou Jianhua , Huang Niu , Liu Wei , Kong Xin Ying , Zheng Yong , Ye Liqun 
Published: January 2024

AbstractThe intelligent construction of non‐noble metal materials that exhibit reversible oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) with bifunctional electrocatalytic performance is greatly coveted in the realm of zinc‐air batteries (ZABs). Herein, a crafted structure‐amorphous MnO2 lamellae encapsulated covalent triazine polymer‐derived N, S, P co‐doped carbon sphere (A‐MnO2/NSPC) is designed using a self‐doped pyrolysis coupled with an in situ encapsulation strategy. The customized A‐MnO2/NSPC‐2 demonstrates a superior bifunctional electrocatalytic performance, confirmed by a small ΔE index of 0.64 V for ORR/OER. Experimental investigations, along with density functional theory calculations validate that predesigned amorphous MnO2 surface defects and abundant heteroatom catalytic active sites collectively enhance the oxygen electrocatalytic performance. Impressively, the A‐MnO2/NSPC‐based rechargeable liquid ZABs show a large open‐circuit potential of 1.54 V, an ultrahigh peak power density of 181 mW cm−2, an enormous capacity of 816 mAh g−1, and a remarkable stability for more than 1720 discharging/charging cycles. Additionally, the assembled flexible all‐solid‐state ZABs also demonstrate outstanding cycle stability, surpassing 140 discharging/charging cycles. Therefore, this highly operable synthetic strategy offers substantial understanding in the development of magnificent bifunctional electrocatalysts for various sustainable energy conversions and beyond.
High‐Efficiency Pure Red CsPbI3 QLEDs Via Strong Electron Affinity Interface Layer Engineering
Authors: Deng Ming , Li Yanming , Zhang Xuanyu , Wu Chunyan , Zhang Ting , Qian Lei , Xiang Chaoyu 
Published: January 2024

AbstractInorganic perovskite quantum dots (QDs) have garnered significant attention due to their outstanding optical properties. However, perovskite quantum dot light‐emitting diodes (Pe‐QLEDs) still face challenges related to their fluorescence efficiency and electron injection. First, the electron transport layer (ETL) leads to severe non‐radiative recombination due to fluorescence quenching in CsPbI3 QDs. Second, there is an electron injection imbalance resulting from low electron injection efficiency, leading to reduced non‐radiative recombination and external quantum efficiency. To address these issues, this study introduces two interface layer materials with different electron affinities, 1,3,5‐Tris(3‐pyridyl‐3‐phenyl)benzene (TmPyPB) and 2,4,6‐Tris(3′‐(pyridine‐3‐yl)biphenyl‐3‐yl)‐1,3,5‐triazine (TmPPPyTz). These materials not only passivated defects on the surface of CsPbI3 QDs films but also effectively prevented the fluorescence quenching of CsPbI3 QDs by the PO‐T2T (ETL). TmPPPyTz, with a relatively lower LUMO energy level, further improved energy level matching, significantly enhancing electron injection efficiency. Ultimately, using interface engineering with the TmPPPyTz interface layer, the devices achieved an outstanding 25.80% champion‐level external quantum efficiency (EQE) for Pe‐QLEDs with only a sub‐bandgap voltage of 1.7 V and half‐life (T50) is 17.99 h at 100 nits. This research provided an effective method to enhance the performance of CsPbI3 Pe‐QLEDs, addressing long‐standing issues inhibiting their efficiency.
Alkali‐Metal–Assisted Green‐Solvent Synthesis for In Situ Growth of Perovskite Nanocrystals in Porous Materials
Authors: Wang Peijun , Wang Bolun , Li Nan , He Tong , Zhang Hao , Zhang Lu , Liu Shengzhong (Frank) 
Published: January 2024

AbstractInorganic metal halide perovskite CsPbX3 (X = I, Br, and Cl) nanocrystals (NCs) are rapidly developed due to their excellent photophysical properties and potential applications in lighting, lasers, and scintillators. However, the materials for growing perovskite NCs are insoluble or hydrolyzed in most green solvents, limiting their further development. Based on rational chemical analysis, an alkali‐metal–assisted green‐solvent synthesis method for in situ growth of CsPbBr3 NCs within SAPO‐34 zeolite with bright luminescence is developed. Water is the only solvent used in the whole process. Surprisingly, by the synergistic effect of the channel structure of SAPO‐34 and alkali‐metal ions crystallization regulation, the CsPbBr3 NCs embedded in SAPO‐34 assisted by Na+ emit bright blue light under ultraviolet illumination, with a 30 nm blue shift comparing to the CsPbBr3 NCs assisted by K+. Moreover, CsPbBr3 NCs can also be grown in mesoporous SiO2 SBA‐15 and zeolites including ZSM‐5, AlPO‐5, and SOD, indicating that the method is universal for in situ growth of luminescent perovskite NCs in porous materials. This alkali‐metal–assisted green‐solvent synthesis provides a new strategy for developing high‐quantum–yield, tunable‐emission, and stable perovskite luminescent materials.
Screening Selection of Hydrogen Evolution‐Inhibiting and Zincphilic Alloy Anode for Aqueous Zn Battery
Authors: Wang Luyao , Zhou Shaojie , Yang Kai , Huang Weiwei , Ogata Shigenobu , Gao Lei , Pu Xiong 
Published: January 2024

AbstractThe hydrogen evolution reaction (HER) and Zn dendrites growth are two entangled detrimental effects hindering the application of aqueous Zn batteries. The alloying strategy is studied to be a convenient avenue to stabilize Zn anodes, but there still lacks global understanding when selecting reliable alloy elements. Herein, it is proposed to evaluate the Zn alloying elements in a holistic way by considering their effects on HER, zincphilicity, price, and environmental‐friendliness. Screening selection sequence is established through the theoretical evaluation of 17 common alloying elements according to their effects on hydrogen evolution and Zn nucleation thermodynamics. Two alloy electrodes with opposite predicted effects are prepared for experimental demonstration, i.e., HER‐inhibiting Bi and HER‐exacerbating Ni. Impressively, the optimum ZnBi alloy anode exhibits one order of magnitude lower hydrogen evolution rate than that of the pure Zn, leading to an ultra‐long plating/stripping cycling life for more than 11 000 cycles at a high current density of 20 mA cm−2 and 81% capacity retention for 170 cycles in a Zn‐V2O5 pouch cell. The study not only proposes a holistic alloy selection principle for Zn anode but also identifies a practically effective alloy element.
Contact‐Based and Proximally Thermosensitive Few‐Layer Graphene Ntc Thermistors with Highly Fast Switching Behavior
Authors: Umar Muhammad , Irani Farid Sayar , Mirbakht Seyed Sajjad , Yapici Murat Kaya 
Published: January 2024

AbstractPatterning graphene onto polymeric materials offers benefits in realizing flexible, stretchable, and wearable multifunctional electrodes. However, the employed integration approaches and use of non‐patternable polymers hinder the patterning of graphene at the sub‐millimeter (mm) scale. Serpentine‐shaped thermally active graphene patterns (thermistors) of 500 × 500 µm2 area are reported by the seamless integration of chemical vapor‐deposited graphene (GCVD) into readily available SU‐8 polymer with MEMS‐compatible cleanroom fabrication processes. The thermistor resistance decreases with an increase in graphene temperature changed by local heat conduction or environmental thermal radiations; hence, exhibits a negative temperature coefficient (NTC) of resistance of 0.0012/°C. Furthermore, very fast resistive switching with 1 s response and 3.2 s recovery time is observed under cyclic heating and cooling. Several application scenarios including, monitoring of surface temperature (e.g., kettle and human body), rapid response (0.25 s) to heat conduction and radiations (0.5 s) from human finger at room temperature for contact and touch‐free proximity switching (e.g., turn ON and OFF an LCD display) are demonstrated. Moreover, owing to its small area less than a ceramic resistor enabled to integrate the fabricated thermistor onto a printed circuit board (PCB) to construct a fully packaged thermometer to monitor ambient temperature.
Rationally Designed Conversion‐Type Lithium Metal Protective Layer for All‐Solid‐State Lithium Metal Batteries
Authors: Lim Haechannara , Jun Seunggoo , Song Yong Bae , Baeck Ki Heon , Bae Hongyeul , Lee Garam , Kim Jinhong , Jung Yoon Seok 
Published: January 2024

AbstractA stable interfacial design bridging Li metal and sulfide solid electrolytes is imperative for deploying practical all‐solid‐state Li metal batteries. Despite the extensive exploration of interlayer materials, including inorganic substances, lithiophilic metals, and their composites, a comprehensive understanding of their stability and chemo‐mechanical evolution, particularly those influenced by cell fabrication processes, remains unexplored. Herein, it is meticulously investigate the formation and evolution of LiF, Mg, and conversion‐type multicomponent MgF2 ultrathin interlayers, each fabricated via thermal evaporation deposition. Unexpectedly, LiF and Mg fail to enhance cell performance, with LiF notably susceptible to external pressures during cell fabrication, leading to serious current constriction, while Mg deposition results in the formation of a Li‐rich solid solution. Remarkably, the MgF2 coatings demonstrate substantially superior performance in both Li|Li6PS5Cl|Li symmetric cells (up to 2000 h) and LiNi0.70Co0.15Mn0.15O2|Li6PS5Cl|Li full‐cells (82% capacity retention after 800 cycles) at 30 °C. These results are attributed to the in‐situ formation of LiF and LixMg nanograins through a conversion reaction, which, after repeated cycling, maintains stability and a fixed position at the interface while ensuring uniform interfacial Li+ flux. Supported by comprehensive analyses, these findings highlight the pivotal role of conversion‐type interlayers in mitigating side reactions and preventing Li penetration.
Cortisol levels across the lifespan in common marmosets (Callithrix jacchus)
Authors: Lopez Matthew , Seidl Amaya , Phillips Kimberley A. 
Published: January 2024

AbstractHuman aging is associated with senescence of the hypothalamic–pituitary–adrenal (HPA) axis, leading to progressive dysregulation characterized by increased cortisol exposure. This key hormone is implicated in the pathogenesis of many age‐related diseases. Common marmosets (Callithrix jacchus) display a wide spectrum of naturally occurring age‐related pathologies that compare similarly to humans and are increasingly used as translational models of aging and age‐related disease. Whether the marmoset HPA axis also shows senescence with increasing age is unknown. We analyzed hair cortisol concentration (HCC) across the lifespan of 50 captive common marmosets, ranging in age from approximately 2 months–14.5 years, via a cross‐sectional design. Samples were processed and analyzed for cortisol using enzyme immunoassay. HCC ranged from 1416 to 15,343 pg/mg and was negatively correlated with age. We found significant main effects of age group (infant, adolescent, adult, aged, very aged) and sex on HCC, and no interaction effects. Infants had significantly higher levels of HCC compared with all other age groups. Females had higher HCC than males. There was no interaction between age and sex. These results suggest marmosets do not show dysregulation of the HPA axis with increasing age, as measured via HCC.
N‐Cyanopiperazines as Specific Covalent Inhibitors of the Deubiquitinating Enzyme UCHL1
Authors: Schmidt Mirko , Grethe Christian , Recknagel Sarah , Kipka Gian‐Marvin , Klink Nikolas , Gersch Malte 
Published: January 2024

AbstractCyanamides have emerged as privileged scaffolds in covalent inhibitors of deubiquitinating enzymes (DUBs). However, many compounds with a cyanopyrrolidine warhead show cross‐reactivity toward small subsets of DUBs or toward the protein deglycase PARK7/DJ‐1, hampering their use for the selective perturbation of a single DUB in living cells. Here, we disclose N’‐alkyl,N‐cyanopiperazines as structures for covalent enzyme inhibition with exceptional specificity for the DUB UCHL1 among 55 human deubiquitinases and with effective target engagement in cells. Notably, transitioning from 5‐membered pyrrolidines to 6‐membered heterocycles eliminated PARK7 binding and introduced context‐dependent reversibility of the isothiourea linkage to the catalytic cysteine of UCHL1. Compound potency and specificity were analysed by a range of biochemical assays and with a crystal structure of a cyanopiperazine in covalent complex with UCHL1. The structure revealed a compound‐induced conformational restriction of the cross‐over loop, which underlies the observed inhibitory potencies. Through the rationalization of specificities of different cyanamides, we introduce a framework for the investigation of protein reactivity of bioactive nitriles of this compound class. Our results represent an encouraging case study for the refining of electrophilic compounds into chemical probes, emphasizing the potential to engineer specificity through subtle chemical modifications around the warhead.