bluuebunny/crossref_metadata_2025_split huggingface dataset:
Strongly Coupled NbSe2 Ultrathin Nanosheets/Graphene Heterostructure Facilitates Potassium Ion Storage
Authors: Zhou Jinhui , Zhao Shuoqing , Lv Fan , Luo Heng , Zhang Shipeng , Zhang Wenshu , Lin Fangxu , Zhang Weiyu , Wang Kai , Wang Dawei , Guo Shaojun 
Published: August 2024

AbstractLayered transition metal dichalcogenides are of intensive interest for potassium‐ion batteries (PIBs) due to their high theoretical capacity, relatively low working potential, and layered structures. However, the limited interlayer spacing poses challenges in accommodating large‐radius potassium ions, significantly affecting their rate and cycling performances, particularly for selenide counterparts. Herein, a class of the strongly coupled NbSe2 nanosheets (NSs)/graphene (G) heterostructure with expanded interlayer spacings and high electron conductivity for boosting the performance of potassium storage is reported. NbSe2 NSs/G delivers a reversible capacity of 348.4 mAh g−1 at 0.05 A g−1, exceptional rate performance (117.5 mAh g−1 at an ultrahigh current density of 10.0 A g−1), and excellent cycle stability (capacity retention of 167.8 mAh g−1 after 2350 cycles under 2.0 A g−1), placing it among the top performers in reported TMD‐based PIB anodes. In situ XRD and Raman measurements reveal the intercalation‐based mechanism in NbSe2 NSs/G and the introduction of graphene can alleviate the severe volume change, making it possess superior rate performance and cycle stability Prominently, full‐cell PIBs employing NbSe2 NSs/G anodes demonstrate remarkable rate capability, and achieve a high energy density of 103.0 Wh kg−1 and a high power density of 1140.6 W kg−1.
Structural Regulation of Au‐Pt Bimetallic Aerogels for Catalyzing the Glucose Cascade Reaction
Authors: Wang Cui , Wang Lingwei , Nallathambi Varatharaja , Liu Yuanwu , Kresse Johannes , Hübner René , Reichenberger Sven , Gault Baptiste , Zhan Jinhua , Eychmüller Alexander , Cai Bin 
Published: August 2024

AbstractBimetallic nanostructures are promising candidates for the development of enzyme‐mimics, yet the deciphering of the structural impact on their catalytic properties poses significant challenges. By leveraging the structural versatility of nanocrystal aerogels, this study reports a precise control of Au–Pt bimetallic structures in three representative structural configurations, including segregated, alloy, and core–shell structures. Benefiting from a synergistic effect, these bimetallic aerogels demonstrate improved peroxidase‐ and glucose oxidase‐like catalytic performances compared to their monometallic counterparts, unleashing tremendous potential in catalyzing the glucose cascade reaction. Notably, the segregated Au–Pt aerogel shows optimal catalytic activity, which is 2.80 and 3.35 times higher than that of the alloy and core–shell variants, respectively. This enhanced activity is attributed to the high‐density Au–Pt interface boundaries within the segregated structure, which foster greater substrate affinity and superior catalytic efficiency. This work not only sheds light on the structure–property relationship of bimetallic catalysts but also broadens the application scope of aerogels in biosensing and biological detections.
Bubble‐Guidance Breaking Gas Shield for Highly Efficient Overall Water Splitting
Authors: Li Yuliang , Li Ke , Li Lu , Gao Jinxin , Wang Zhaoyang , Zou Wentao , Li Honghao , Zhang Qiuya , Li Yan , Zhang Xiaofang , Tian Dongliang , Jiang Lei 
Published: August 2024

AbstractOverall water splitting is a promising technology for sustainable hydrogen production, but the primary challenge is removing bubbles from the electrode surface quickly to increase hydrogen production. Inspired by the directional fluid transport properties of natural biological surfaces like Nepenthes peristome and Morpho butterfly's wings, here a strategy is demonstrated to achieve highly efficient overall water splitting by a bubble‐guidance electrode, that is, an anisotropic groove‐micro/nanostructured porous electrode (GMPE). Gradient groove micro/nanostructures on the GMPE serve as high‐speed bubble transmission channels and exhibit superior bubble‐guidance capabilities. The synergistic effect of the asymmetric Laplace pressure generated between microscale porous structure and groove patterns and the buoyancy along the groove patterns pushes the produced bubbles directionally to spread, transport, and detach from the electrode surface in time. Moreover, the low adhesive nanosheet arrays are beneficial to reduce bubble size and increase bubble release frequency, which cooperatively improve mass transfer with the microscale structure. Notably, GMPE outperforms planar‐micro/nanostructured porous electrode (PMPE) in hydrogen/oxygen evolution reactions, with GMPE||GMPE showing better water splitting performance than commercially available RuO2||20 wt.% Pt/C. This work improves electrodes for better mass transfer and kinetics in electrochemical reactions at solid‐liquid‐gas interfaces, offering insight for designing and preparing gas‐involved photoelectrochemical electrodes.
Long‐Range Non‐Coulombic Coupling at the LaAlO3/SrTiO3 Interface
Authors: Nethwewala Aditi , Eom Kitae , Yu Muqing , Ramachandran Ranjani , Eom Chang‐Beom , Irvin Patrick , Levy Jeremy 
Published: August 2024

AbstractThe LaAlO3/SrTiO3 interface hosts a plethora of gate‐tunable electronic phases. Gating of LaAlO3/SrTiO3 interfaces is usually assumed to occur electrostatically. However, increasing evidence suggests that non‐local interactions can influence and, in some cases, dominate the coupling between applied gate voltages and electronic properties. Here, quasi‐1D ballistic electron waveguides are sketched at the LaAlO3/SrTiO3 interface as a probe to understand how gate tunability varies as a function of spatial separation. Gate tunability measurements reveal the scaling law to be at odds with the pure electrostatic coupling observed in traditional semiconductor systems. The non‐Coulombic gating at the interface is attributed to a long‐range nanoelectromechanical coupling between the gate and electron waveguide, possibly mediated by the ferroelastic domains in SrTiO3. The long‐range interactions at the LaAlO3/SrTiO3 interface add unexpected richness and complexity to this correlated electron system.
Multifunctional Metasurface: Holography and Spot Cloud Projection
Authors: Guo Shuhan , Shao Yifan , Zhan Junjie , Yu Jiaqi , Wang Yubo , Choudhury Pankaj K. , Hernandez‐Figueroa Hugo E. , Ma Yungui 
Published: August 2024

AbstractMultifunctionality, integration, and miniaturization are the mainstream trends in modern device development. However, optical display and depth perception, essential for innovative applications like intelligent driving and mixed reality, are typically achieved separately in complex and bulky optical systems. Metasurfaces, ultrathin artificial optical surfaces with strong light–matter interaction capabilities at the nanoscale, offer a versatile platform for creating multifunctional, highly integrated, and miniaturized devices by fully exploring spatial multiplexing and utilizing variables like location, polarization, and frequency. In this study, a multifunctional metasurface that integrates meta‐holography with Dammann gratings is presented. By engineering the phase profile, the device can display specific holographic images in the Fresnel region while simultaneously producing a high‐density spot cloud with over 37 000 spots covering the entire half space. As a proof‐of‐concept, a projection and reconstruction experiment is performed to elaborate its potential for retrieving three‐dimensional (3D) spatial information of real scenarios. The simultaneous generation of display and point cloud holds significant promise for applications in cutting‐edge imaging technologies such as intelligent driving and robot vision.
Effect of abdominal adipose tissue glucose uptake on brain aging
Authors: Lu Weizhao , Duan Yanhua , Li Kun , Cheng Zhaoping , Qiu Jianfeng 
Published: August 2024

AbstractINTRODUCTIONAbdominal adipose tissue (AT) mass has adverse effects on the brain. This study aimed to investigate the effect of glucose uptake by abdominal AT on brain aging.METHODSThree‐hundred twenty‐five participants underwent total‐body positron emission tomography scan. Brain age was estimated in an independent test set (n = 98) using a support vector regression model that was built using a training set (n = 227). Effects of abdominal subcutaneous and visceral AT (SAT/VAT) glucose uptake on brain age delta were evaluated using linear regression.RESULTSHigher VAT glucose uptake was linked to negative brain age delta across all subgroups. Higher SAT glucose uptake was associated with negative brain age delta in lean individuals. In contrast, increased SAT glucose uptake demonstrated positive trends with brain age delta in female and overweight/obese participants.DISCUSSIONIncreased glucose uptake of the abdominal VAT has positive influences on the brain, while SAT may not have such influences, except for lean individuals.Highlights
Higher glucose uptake of the visceral adipose tissue was linked to decelerated brain aging.
Higher glucose uptake of the subcutaneous adipose tissue (SAT) was associated with negative brain age delta in lean individuals.
Faster brain aging was associated with increased glucose uptake of the SAT in female and overweight and obese individuals.
N‐Heterocyclic Carbene Enabled Copper Catalyzed Asymmetric Synthesis of Pyrimidinyl Phosphine with both Axial and P‐Stereogenicity
Authors: Cui Ranran , Zhang Yuxiang , Huang Zhuo , Yuwen Liyan , Xu Yuming , Zhang Qing‐Wei 
Published: August 2024

AbstractP‐stereogenic phosphines, renowned for their utility as ligands and catalysts, have been instrumental in the field of asymmetric catalysis. However, the catalytic asymmetric synthesis of chiral ligands possessing both axial and phosphine chirality remains a significant challenge. Here, we present the successful demonstration of a Cu‐catalyzed asymmetric C−P construction using in situ generated secondary phosphine and heteroaryl chloride. By introducing a chiral NHC ligand and an achiral diphosphine auxiliary ligand, we effectively alleviated the poisoning effect caused by phosphine(III) compounds and suppressed the nonenantioselective background reaction. The reaction exhibited excellent enantioselectivity, with up to 96 % ee, and good diastereoselectivity, with up to 14 : 1 dr, when employing less sterically hindered secondary phosphines. This particular substrate poses a significant challenge due to its strong poisoning effect in copper catalysis.
Enhanced Alkene Oxidative Cleavage in Water via Photoexcited FeIV Species within Covalent Organic Framework Thin Films
Authors: Majumder Poulami , Mohata Shibani , Sasmal Himadri Sekhar , Chandra Bittu , Kuiry Himangshu , Banerjee Rahul 
Published: August 2024

AbstractThe oxidative cleavage of alkenes is a crucial step in synthesizing key organic molecules featuring carbonyl functional groups prevalent in natural products and pharmaceuticals. We introduce a photochemical method for heterogeneous C=C bond cleavage, employing photo‐catalytically generated [(bTAML)FeIV−O−FeIV(bTAML)]− species (where bTAML stands for biuret‐modified tetraamido macrocyclic ligand) in aqueous environments under gentle conditions. Leveraging the photosensitizing properties of Covalent Organic Frameworks (COFs) and their advantageous morphological traits as films, we enhance the reaction by closely associating the substrate with the catalyst. This study marks the inaugural demonstration of Fe2IV‐μ‐oxo radical cation and FeIV=O species facilitating alkene cleavage in water against a backdrop of a hydrophobic COF. Through comprehensive mechanistic studies, including control experiments, we confirm that these two high‐valent iron oxo species collaborate to cleave alkenes, forming an intermediate epoxide. Our approach yields moderate to high success across various alkenes, displaying diverse functional groups (achieving up to 75 % yield) with notable efficiency and selectivity towards aldehyde/ketone products. Moreover, the heterogeneous COF film, immobilizing (Et4N)2[FeIII(Cl)bTAML], exhibits exceptional recyclability, enduring up to four cycles.
Ferroptose‐induzierender Co(III) Polypyridin Sulfasalazin Komplex für die verbesserte Krebstherapie
Authors: Montesdeoca Nicolás , Johannknecht Lukas , Efanova Elizaveta , Heinen‐Weiler Jacqueline , Karges Johannes 
Published: August 2024

AbstractTrotz erheblicher Verbesserungen bei der Behandlung von Krebstumoren in den letzten Jahrzehnten bleibt Krebs eine der tödlichsten Krankheiten weltweit. Um die Unzulänglichkeiten der derzeit angewandten chemotherapeutischen Behandlungen zu überwinden, wurden viele Forschungsanstrengungen auf die Entwicklung von Ferroptose‐induzierenden Antikrebsmitteln gerichtet. Die Ferroptose ist eine neu beschriebene Form des regulierten, nicht‐apoptotischen Zelltods, der in der Klinik ein hohes Potenzial besitzt. In diesem Artikel wird über die chemische Synthese und biologische Evaluation eines Co(III) Polypyridin Sulfasalazin Komplexes als Ferroptose‐Induktor berichtet. Nach dem Eindringen in die Krebszellen reicherte sich der Metallkomplex vor allem in den Mitochondrien an und löste dort die Produktion von Hydroxy‐Radikalen und Lipidperoxiden aus, was schließlich zum Zelltod durch Ferroptose führte. Die Verbindung vernichtete nachweislich verschiedene Krebszellen sowie multizelluläre Kolonkarzinom‐Tumor‐Sphäroide. Soweit wir wissen, handelt es sich bei dieser Studie um das erste Beispiel für einen Co(III)‐Komplex, der Ferroptose auslösen kann.
Ferroptosis Inducing Co(III) Polypyridine Sulfasalazine Complex for Therapeutically Enhanced Anticancer Therapy
Authors: Montesdeoca Nicolás , Johannknecht Lukas , Efanova Elizaveta , Heinen‐Weiler Jacqueline , Karges Johannes 
Published: August 2024

AbstractDespite significant improvements in the treatment of cancerous tumors in the last decades, cancer remains one of the deadliest diseases worldwide. To overcome the shortcomings of currently applied chemotherapeutic treatments, much research efforts have been devoted towards the development of ferroptosis inducing anticancer agents. Ferroptosis is a newly described form of regulated, non‐apoptotic cell death that is associated with high potential inside the clinics. Herein, the chemical synthesis and biological evaluation of a Co(III) polypyridine sulfasalazine complex as a ferroptosis inducer is reported. Upon entering the cancerous cells, the metal complex primarily accumulated in the mitochondria, triggering the production of hydroxy radicals and lipid peroxides, ultimately causing cell death by ferroptosis. The compound demonstrated to eradicate various monolayer cancer cells as well as colon carcinoma multicellular tumor spheroids. To the best of our knowledge this study reports on the first example of a Co(III) complex that is capable of inducing ferroptosis.
An EM‐based likelihood inference for degradation data analysis using gamma process
Authors: Palayangoda Lochana , Balakrishnan N. 
Published: August 2024

AbstractThe gamma process is widely used for the lifetime estimation of highly reliable products that degrade over time. Typically, incomplete likelihood is used to estimate the model parameters and the reliability estimates for the first passage time distribution of the gamma process; however, it (i.e., pseudo method) does not consider interval censoring and right censoring information of the degradation data. In this work, the expectation‐maximization algorithm‐based method (EM method) is developed for the estimation of the gamma process model parameters and the reliability estimates incorporating interval censoring and right censoring. The asymptotic variance–covariance matrix and the asymptotic confidence intervals for the parameters are constructed, and then a comparison between the pseudo method and the EM method is made. Monte Carlo simulation studies and real‐life data applications are conducted in order to illustrate the performance of the proposed EM method over the pseudo method.
Axillary and subclavian venous spasm during pacemaker implantation – A case report and literature review
Authors: Venet Amelie , Vergier Romain , Cenac Kurlene , Inamo Jocelyn , Müssigbrodt Andreas 
Published: August 2024

Key Clinical MessageVenous spasm is an important reason for complicated or failed implantations of cardiac implantable electronic devices. Prevention or risk reduction of venous spasm during cardiac implantable electronic device implantation may be achieved by ultrasound or fluoroscopic imaging prior to puncture, cephalic vein cut‐down, sufficient pre‐ and perioperative hydration, nitroglycerin injection and effective sedation, and analgesia.AbstractThis case report with literature review focuses on venous spasm as a potential cause for complicated implantations of cardiac implantable electronic devices. The case report is clinically relevant as it describes a progressive spasm affecting the axillary and the subclavian vein. A 66‐year‐old female complained of symptomatic atrial fibrillation (AF) and atypical atrial flutter despite interventional and medical treatment. As an ultimate treatment, she was scheduled for pacemaker implantation and atrioventricular node ablation. Several puncture attempts of the axillary vein failed. Despite venous blood aspiration, no guidewires could be advanced into the axillary vein. We performed a first venogram revealing significant spasm of the axillary vein. Another failed venous puncture occurred after change of access site to the subclavian vein. A second venogram displayed progression of the spasm, now affecting both the axillary and the subclavian veins. Normal saline perfusion was administered as well as intravenous isosorbide. Unfortunately, a repeated venogram after 15 min waiting time showed persistence of the spasm, still affecting both veins. The procedure was discontinued as the patient became uncomfortable. Venous spasm is an important reason for complicated or failed implantations of cardiac implantable electronic devices. Commonly used medical prevention and treatment are intravenous fluids and nitroglycerin. Prevention or risk reduction of venous spasm during cardiac implantable electronic device implantation may be achieved by ultrasound or fluoroscopic imaging prior to puncture, cephalic vein cut‐down, sufficient pre‐ and perioperative hydration, nitroglycerin injection and effective sedation and analgesia.
Ternary‐Grafted Starch‐Based Hydrogel with Improved Adsorption Capacity for Dyes
Authors: Haihua Li , Jingyu Guan , Yuqi Yang , Yuxuan Zheng , Yuhua Gao , Meifang Yan , Na Li , Lihui Zhang , Shengxiu Ma , Chen Chen , Jian Liu , Shuxing Mei , Shasha Wang 
Published: August 2024

AbstractBiomass‐based hydrogels can be used as the adsorbents in sewage water, as they have good adsorption capacity for heavy ions and dyes. A ternary‐grafted starch‐based hydrogel, St1.0/CMC0.5/P(AM3.0‐AA5.0‐AMPS1.0), was prepared using cornstarch (St) and sodium carboxymethyl cellulose (CMC) as raw materials, with acrylamide (AM), acrylic acid (AA), and 2‐acrylamido‐2‐methylpropane sulfonic acid (AMPS) as graft monomers. Due to the introduction of CMC and AMPS, the number and type of effective adsorption functional groups in the St1.0/CMC0.5/P(AM3.0‐AA5.0‐AMPS1.0) hydrogel increased, leading to an improved adsorption capacity and removal rate for methylene blue (MB). The maximum adsorption capacity and removal rate for MB could be 1624.49 mg/g and 91.8 %, respectively, at 25 °C. According to the adsorption isotherm and adsorption kinetics, the MB adsorption process on the hydrogel occurs according to the Langmuir isotherm model and quasi‐second‐order kinetics via a chemisorption process occurring on the adsorbent monolayer. Moreover, the St1.0/CMC0.5/P(AM3.0‐AA5.0‐AMPS1.0) hydrogel displayed good regeneration performance. The removal rate for MB could still achieve 84.3 % after the hydrogel was reused four times.
Design, Synthesis, and In Vitro and In Silico Evaluation of 1,3,4‐Oxadiazoles as Anti‐Trypanosoma cruzi and Anti‐Leishmania mexicana Agents
Authors: Delgado‐Maldonado Timoteo , Moreno‐Rodríguez Adriana , González‐Morales Luis D. , Flores‐Villegas Any Laura , Rodríguez‐González Jorge , Rodríguez‐Páez Lorena , Aguirre‐Alvarado Charmina , Sánchez‐Palestino Luis M. , Ortiz‐Pérez Eyra , Rivera Gildardo 
Published: August 2024

AbstractA series of novel 4‐acetyl‐1,3,4‐oxadiazole derivatives was designed and synthesized for their biological evaluation in vitro against Trypanosoma cruzi (T. cruzi) and Leishmania mexicana (L. mexicana). Additionally, all compounds were evaluated by molecular docking on the cruzain of T. cruzi (TcCz) and the cysteine protease B (CPB) of L. mexicana (LmCPB) to know their potential mechanism of binding. Compound OX‐12 had better trypanocidal activity against NINOA (IC50=10.5 μM) and A1 (IC50=21.7 μM) T. cruzi strains that reference drug benznidazole (IC50=30.3 μM and 39.8 μM, respectively). Compound OX‐2 had the best biological activity against L. mexicana in M379 (IC50=11.9 μM) and FCQEPS (IC50=34.0 μM) strains that the reference drug glucantime (IC50>120 μM). All the compounds showed important interactions with residues on the active site of TcCz (Gly66, Trp26, Leu67, and Ala138) and LmCPB (Gly67, Asn62, Leu68, and Ala140). Finally, the molecular dynamics simulations of the compound OX‐12 shown moderate stability from 40–115 ns with an RMSD value of 6.5 Å. Meanwhile, compound OX‐2 showed a minor stability in complex with CPB from 25–200 ns of simulation (RMSD<9 Å). These results encourage to develop more potent and efficient trypanocidal and leishmanicidal agents using the 1,3,4‐oxadiazole scaffold.
Electronic Descriptor to Identify the Activity of SACs for E‐NRR and Effect of BF3 as Electrolyte Ion
Authors: Barman Narad , Kapse Samadhan , Thapa Ranjit 
Published: August 2024

AbstractElectrochemical nitrogen reduction reaction (e‐NRR) is an eco‐friendly alternative approach to generate ammonia under ambient conditions, with very low power supply. But, developing of an efficient catalyst by suppressing parallel hydrogen evolution reaction as well as avoiding the catalysts poisoning either by hydrogen or electrolyte ion is an open question. So, in order to screen the single atom catalysts (SACs) for the e‐NRR, we proposed a descriptor‐based approach using density functional theory (DFT) based calculations. We investigated total 24 different SACs of types TM−Pc, TM‐N3C1, TM‐N2C2, TM‐NC3 and TM‐N4, considering transition metal (TM). We have considered mainly BF3 ion to understand the role of electrolyte and extended the study for four more electrolyte ions, Cl, ClO4, SO4, OH. Herein, to predict catalytic activity for a given catalyst we have tested 16 different electronic parameters. Out of those, electronic parameter dxz↓ occupancy, identified as electronic descriptor, is showing an excellent linear correlation with catalytic activity (R2=0.86). Furthermore, the selectivity of e‐NRR over HER is defined by using an energy parameter ▵G*H‐▵G*NNH. Further, the electronic descriptor (dxz↓ occupancy) can be used to predict promising catalysts for e‐NRR, thus reducing the efforts on designing future single atom catalysts (SACs).