bluuebunny/crossref_metadata_2025_split huggingface dataset:
Advancing Heterogeneous Organic Synthesis With Coordination Chemistry‐Empowered Single‐Atom Catalysts
Authors: Ye Bo‐Chao , Li Wen‐Hao , Zhang Xia , Chen Jian , Gao Yong , Wang Dingsheng , Pan Hongge 
Published: September 2024

AbstractFor traditional metal complexes, intricate chemistry is required to acquire appropriate ligands for controlling the electron and steric hindrance of metal active centers. Comparatively, the preparation of single‐atom catalysts is much easier with more straightforward and effective accesses for the arrangement and control of metal active centers. The presence of coordination atoms or neighboring functional atoms on the supports' surface ensures the stability of metal single‐atoms and their interactions with individual metal atoms substantially regulate the performance of metal active centers. Therefore, the collaborative interaction between metal and the surrounding coordination environment enhances the initiation of reaction substrates and the formation and transformation of crucial intermediate compounds, which imparts single‐atom catalysts with significant catalytic efficacy, rendering them a valuable framework for investigating the correlation between structure and activity, as well as the reaction mechanism of catalysts in organic reactions. Herein, comprehensive overviews of the coordination interaction for both homogeneous metal complexes and single‐atom catalysts in organic reactions are provided. Additionally, reflective conjectures about the advancement of single‐atom catalysts in organic synthesis are also proposed to present as a reference for later development.
Advanced Materials for Energy Harvesting and Soft Robotics: Emerging Frontiers to Enhance Piezoelectric Performance and Functionality
Authors: Persano Luana , Camposeo Andrea , Matino Francesca , Wang Ruoxing , Natarajan Thiyagarajan , Li Qinlan , Pan Min , Su Yewang , Kar‐Narayan Sohini , Auricchio Ferdinando , Scalet Giulia , Bowen Chris , Wang Xudong , Pisignano Dario 
Published: September 2024

AbstractPiezoelectric energy harvesting captures mechanical energy from a number of sources, such as vibrations, the movement of objects and bodies, impact events, and fluid flow to generate electric power. Such power can be employed to support wireless communication, electronic components, ocean monitoring, tissue engineering, and biomedical devices. A variety of self‐powered piezoelectric sensors, transducers, and actuators have been produced for these applications, however approaches to enhance the piezoelectric properties of materials to increase device performance remain a challenging frontier of materials research. In this regard, the intrinsic polarization and properties of materials can be designed or deliberately engineered to enhance the piezo‐generated power. This review provides insights into the mechanisms of piezoelectricity in advanced materials, including perovskites, active polymers, and natural biomaterials, with a focus on the chemical and physical strategies employed to enhance the piezo‐response and facilitate their integration into complex electronic systems. Applications in energy harvesting and soft robotics are overviewed by highlighting the primary performance figures of merits, the actuation mechanisms, and relevant applications. Key breakthroughs and valuable strategies to further improve both materials and device performance are discussed, together with a critical assessment of the requirements of next‐generation piezoelectric systems, and future scientific and technological solutions.
Visible‐Near Infrared Independent Modulation of Hexagonal WO3 Induced by Ionic Insertion Sequence and Cavity Characteristics
Authors: Wang Junkai , Wang Zhipeng , Cui Lixuan , Zhang Mei , Huo Xiangtao , Guo Min 
Published: September 2024

AbstractDual‐band electrochromic materials have attracted significant attention due to their ability to independently control sunlight and solar heat. However, these materials generally exhibit notable limitations, and the mechanisms for their dual‐band independent regulation remain poorly understood. Here, the visible‐NIR‐independent regulation capabilities of hexagonal WO3 (h‐WO3) are introduced for the first time. A structure‐activity relationship that perfectly links the microscopic ion insertion sequence and cavity characteristics to the macroscopic dual‐band electrochromic properties is established. The progressive ion intercalation process and the distinctive optical activity of the cavities are keys for enabling h‐WO3 to independently modulate “bright,” “cool,” and “dark” modes. Notably, h‐WO3 demonstrates superior dual‐band electrochromic performance with a broadband full shielding effect from 550 to 2000 nm, achieving the widest full shielding band in dual‐band electrochromic studies. Additionally, h‐WO3 shows a high discharge capacity of 270.9 mAh m−2 at 0.25 A m−2, and requires only 49.1 and 209.7 mAh m−2 to complete a full round‐trip switch between “bright‐cool” and “bright‐dark” modes, respectively. The constructed device offers a dynamic temperature control range of up to 10.5 °C and supports a maximum voltage of 2.86 V, underscoring its considerable potential for practical applications and energy efficiency.
Mass Production of Multishell Hollow SiO2 Spheres With Adjustable Void Ratios and Pore Structures
Authors: Geng Yuqi , Guo Xiaojun , Yue Fen , Xiang Maoqiao , Zhu Qingshan 
Published: September 2024

AbstractSiO2 multishell hollow spheres (MHSs) as supports have multiple porous layers and internal voids, which present notable advantages in regulating mass transport and chemical reactions. However, practical applications of SiO2 MHSs are severely hindered because of their high costs and low production efficiency issues. Herein, it is overcome these obstacles by developing a precursor hydrolysis method and demonstrate a cost‐effective production of void‐ratio tunable SiO2 MHSs on a large scale, which has a much lower cavitation temperature (25 °C) and one order of magnitude decrease in cost. In addition, the new method can also be applied to fabricate TiO2 and SnO2 hollow spheres (HSs). In particular, an NH4Cl precipitation‐pyrolysis strategy is developed to tune the pore diameters and pore distributions of SiO2 MHSs with different void ratios. SiO2 MHSs with varying void ratios and pore distributions have the broadest controlling release time ranges (30–430 h). The precursor hydrolysis method and NH4Cl precipitation‐pyrolysis strategy offer adequate stimulus to push forward SiO2 MHSs from laboratory‐scale to industry‐scale applications.
Multi‐Modal Sensing Ionogels with Tunable Mechanical Properties and Environmental Stability for Aquatic and Atmospheric Environments
Authors: Lyu Xiaolin , Zhang Haoqi , Shen Shengtao , Gong Yue , Zhou Piaopiao , Zou Zhigang 
Published: September 2024

AbstractIonogels have garnered significant interest due to their great potential in flexible iontronic devices. However, their limited mechanical tunability and environmental intolerance have posed significant challenges for their integration into next‐generation flexible electronics in different scenarios. Herein, the synergistic effect of cation‐oxygen coordination interaction and hydrogen bonding is leveraged to construct a 3D supramolecular network, resulting in ionogels with tunable modulus, stretchability, and strength, achieving an unprecedented elongation at break of 10 800%. Moreover, the supramolecular network endows the ionogels with extremely high fracture energy, crack insensitivity, and high elasticity. Meanwhile, the high environmental stability and hydrophobic network of the ionogels further shield them from the unfavorable effects of temperature variations and water molecules, enabling them to operate within a broad temperature range and exhibit robust underwater adhesion. Then, the ionogel is assembled into a wearable sensor, demonstrating its great potential in flexible sensing (temperature, pressure, and strain) and underwater signal transmission. This work can inspire the applications of ionogels in multifunctional sensing and wearable fields.
Stable Seawater Electrolysis Over 10 000 H via Chemical Fixation of Sulfate on NiFeBa‐LDH
Authors: Chen Haocheng , Liu Pingying , Li Wenbo , Xu Wenwen , Wen Yingjie , Zhang Sixie , Yi Li , Dai Yeqi , Chen Xu , Dai Sheng , Tian Ziqi , Chen Liang , Lu Zhiyi 
Published: September 2024

AbstractAlthough hydrogen production through seawater electrolysis combined with offshore renewable energy can significantly reduce the cost, the corrosive anions in seawater strictly limit the commercialization of direct seawater electrolysis technology. Here, it is discovered that electrolytic anode can be uniformly protected in a seawater environment by constructing NiFeBa‐LDH catalyst assisted with additional SO42− in the electrolyte. In experiments, the NiFeBa‐LDH achieves unprecedented stability over 10 000 h at 400 mA cm−2 in both alkaline saline electrolyte and alkaline seawater. Characterizations and simulations reveal that the atomically dispersed Ba2+ enables the chemical fixation of free SO42− on the surface, which generates a dense SO42− layer to repel Cl− along with the preferentially adsorbed SO42− in the presence of an applied electric field. In terms of the simplicity and effectiveness of catalyst design, it is confident that it can be a beacon for the commercialization of seawater electrolysis technology.
From Magnetostatics to Topology: Antiferromagnetic Vortex States in NiO‐Fe Nanostructures
Authors: Ślęzak Michał , Wagner Tobias , Bharadwaj Venkata Krishna , Gomonay Olena , Kozioł‐Rachwał Anna , Menteş Tevfik Onur , Locatelli Andrea , Zając Marcin , Wilgocka‐Ślęzak Dorota , Dróżdż Piotr , Ślęzak Tomasz 
Published: September 2024

AbstractMagnetic vortices are topological spin structures frequently found in ferromagnets, yet novel to antiferromagnets. By combining experiment and theory, it is demonstrated that in a nanostructured antiferromagnetic‐ferromagnetic NiO(111)‐Fe(110) bilayer, a magnetic vortex is naturally stabilized by magnetostatic interactions in the ferromagnet and is imprinted onto the adjacent antiferromagnet via interface exchange coupling. Micromagnetic simulations are used to construct a corresponding phase diagram of the stability of the imprinted antiferromagnetic vortex state. The in‐depth analysis reveals that the interplay between interface exchange coupling and the antiferromagnet magnetic anisotropy plays a crucial role in locally reorienting the Néel vector out‐of‐plane in the prototypical in‐plane antiferromagnet NiO and thereby stabilizing the vortices in the antiferromagnet.
Advances in Air Quality Monitoring: A Comprehensive Review of Algorithms for Imaging and Sensing Technologies
Authors: Elbestar Mirna , Aly Sherif G. , Ghannam Rami 
Published: September 2024

AbstractAir pollution is a major global concern, leading to serious health problems and environmental damage. This article provides a comprehensive review of historical and current methods used to monitor and predict air quality. It emphasizes the ongoing need for better monitoring techniques. 47 studies are critically analyzed, and computational advancements in air quality monitoring are categorized into sensor‐based and image‐based techniques. This review reveals that sensor‐based algorithmic methods, representing 62% of the reviewed literature, are reliable but often lack flexibility and real‐time monitoring capabilities. On the other hand, image‐based techniques, while innovative, are limited by the size and diversity of datasets, primarily functioning only during daylight hours. To address these limitations, a hybrid approach that integrates both sensor and image‐based methods is proposed. This aims to enhance monitoring by allowing users to visualize pollution levels through an augmented reality layer. The proposed model seeks to provide mobile users with the ability to accurately monitor surrounding air quality by establishing a comprehensive image‐based dataset that includes various features not previously considered in existing datasets.
Sperm miR‐142‐3p Reprogramming Mediates Paternal Pre‐Pregnancy Caffeine Exposure‐Induced Non‐Alcoholic Steatohepatitis in Male Offspring Rats
Authors: Zhang Cong , Guo Yu , Liu Yi , Liu Kexin , Hu Wen , Wang Hui 
Published: September 2024

AbstractNumerous studies have suggested a strong association between paternal adverse environmental exposure and increased disease susceptibility in offspring. However, the impact of paternal pre‐pregnant caffeine exposure (PPCE) on offspring health remains unexplored. This study elucidates the sperm reprogramming mechanism and potential intervention targets for PPCE‐induced non‐alcoholic steatohepatitis (NASH) in offspring. Here, male rats are administrated caffeine (15–60 mg kg−1/d) by gavage for 8 weeks and then mated with females to produce offspring. This study finds that NASH with transgenerational inheritance occurred in PPCE adult offspring. Mechanistically, a reduction of miR‐142‐3p is implicated in the occurrence of NASH, characterized by hepatic lipid metabolism dysfunction and chronic inflammation through an increase in ACSL4. Conversely, overexpression of miR‐142‐3p mitigated these manifestations. The origin of reduced miR‐142‐3p levels is traced to hypermethylation in the miR‐142‐3p promoter region of parental sperm, induced by elevated corticosterone levels rather than by caffeine per se. Similar outcomes are confirmed in offspring conceived via in vitro fertilization using miR‐142‐3pKO sperm. Overall, this study provides the first evidence of transgenerational inheritance of NASH in PPCE offspring and identifies miR‐142‐3p as a potential therapeutic target for NASH induced by paternal environmental adversities.
Combined Electrostatic and Strain Engineering of BiFeO3 Thin Films at the Morphotropic Phase Boundary
Authors: Nordlander Johanna , Grosso Bastien F. , Rossell Marta D. , Maillard Aline , Yan Bixin , Gradauskaite Elzbieta , Spaldin Nicola A. , Fiebig Manfred , Trassin Morgan 
Published: September 2024

AbstractMultiferroic BiFeO3 exhibits a morphotropic phase boundary at large compressive strain that merges metastable phases of tetragonal (T) and rhombohedral (R) character resulting in giant ferroelectric and electromechanical responses. To utilize this functionality in devices, it is essential to understand the response of these ferroelectric phases to the environment of a nanoscale heterostructure. Here, the emergence of ferroelectricity near the morphotropic phase boundary in BiFeO3 is explored directly during thin‐film growth, using optical second harmonic generation. It is found that the epitaxial films form at the growth temperature purely in the T phase with zero critical thickness for the spontaneous polarization. Signatures of monoclinic T‐like and R‐like phases only appear upon sample cooling. The robustness of a single‐domain configuration in the high‐temperature T phase is furthermore demonstrated during growth of capacitor‐like metal | ferroelectric | metal heterostructures. Here, a reduction in tetragonality, rather than multidomain formation, lowers the electrostatic energy in the few‐unit‐cell thickness regime. For this lower tetragonality, density‐functional calculations and scanning transmission electron microscopy point to the stabilization of a novel metastable monoclinic structure upon cooling toward room temperature. The synergistic combination of strain and electrostatic phase stabilization in BiFeO3 heterostructures hence provides a basis for designing new ferroelectric phases and ultrathin ferroelectric devices.
Toward Enhanced Biomimetic Artificial Visual Systems Based on Organic Heterojunction Optoelectronic Synaptic Transistors
Authors: Wang Haonan , Chen Wandi , Su Wenjuan , Zou Zhenyou , Weng Shuchen , Zhou Xiongtu , Wu Chaoxing , Guo Tailiang , Zhang Yongai 
Published: September 2024

AbstractArtificial visual systems, inspired by the human eye, hold significant potential in artificial intelligence. Optoelectronic synapses, integrating image perception, processing, and memory in a single device, offer promising solutions. The human eye exhibits different recognition accuracies for objects under varying light conditions. Therefore, a more biomimetic visual system is needed to better fit actual application scenarios. Here, an organic heterojunction‐based optoelectronic synaptic transistor (OHOST) is proposed to enhance biomimetic artificial visual systems. By utilizing the excellent carrier capture ability of core‐multi‐shell quantum dots (QDs) and the high exciton dissociation efficiency of heterojunction interfaces, the device achieves a recognition capability under different light intensities closely resembling that of the human eye. Under optimal light intensity, the recognition accuracy for the modified national institute of standards and technology (MNIST) dataset can reach 91.52%. Nevertheless, under both low and high light intensities, the accuracy drops to a low level. This work pushes the development of artificial visual systems toward higher levels of biomimicry.
Enantio‐ und Diastereoselektive Desymmetrisierung von 1,1’‐Biaryl‐2,6‐Dicarbaldehyden durch kupferkatalysierte 1,2‐Addition von Siliciumnukleophilen
Authors: Xiao Yao , Zhao Zhi‐Yuan , Irran Elisabeth , Oestreich Martin 
Published: September 2024

AbstractEs wird über eine desymmetrisierende 1,2‐Addition von Siliciumnukleophilen an Biarylderivate, welche eine 2,6‐Dicarbaldehyd‐1‐yleinheit enthalten, berichtet. Die Reaktion wird durch Kupfer mit einem triazoliumionabgeleiteten N‐heterocyclischen Carben als chiralem Liganden katalysiert und ein Si−B‐Reagenz als Siliciumpronukleophil eingesetzt. Die praktische Methode führt zu axial chiralen aromatischen Carbaldehyden mit einem zentral chiralen α‐Hydroxysilansubstituenten in zufriedenstellenden bis guten Ausbeuten und mit hohen Enantio‐ sowie hervorragenden Diastereoselektivitäten. Das Siliciumnukleophil greift immer an der diastereotopen Seite von einer der beiden Carbonylgruppen an, welche dem ortho‐Substituenten am Phenylring an C1 des 2,6‐Dicarbaldehyd‐1‐ylfragments abgewandt ist. Die so erhaltenen axial und zentral chiralen Produkte können nachträglich zu wertvollen Biarylverbindungen weiter umgesetzt werden, ohne dass der Enantiomerenüberschuss nennenswert abnimmt.
Impact of titanium dioxide/graphene in polyvinylidene fluoride nanocomposite membrane to intensify methylene blue dye removal, antifouling performance, and reusability
Authors: Sueraya Ain Zaienah , Rahman Md Rezaur , Said Khairul Anwar Bin Mohamad , Namakka Murtala , Kanakaraju Devagi , Al‐Humaidi Jehan Y. , Al‐Baqami Saad M. , Rahman Mohammed Muzibur , Khandaker Mayeen Uddin 
Published: September 2024

AbstractThe development of efficient water purification technologies is a critical research focus driven by the crucial role of clean water sources for ecological sustainability. This study explores the strategic incorporation of nanoparticles within polyvinylidene fluoride (PVDF) membranes as a promising approach to enhance membrane performance for wastewater remediation. PVDF membranes containing varying ratios of graphene (GR) and titanium dioxide (TiO2) nanocomposites were fabricated via phase inversion method. Characterization techniques including XRD, FTIR, and FESEM‐EDX revealed that the 80% GR nanocomposite membrane exhibited desirable structural and functional properties with pronounced sponge‐like morphology and homogenous nanoparticle distribution. Fourier‐transform infrared spectroscopy and x‐ray diffraction analysis confirmed the 80% GR membrane retained PVDF crystallinity while uniquely eliminating TiO2 crystallinity. Subsequently, performance testing demonstrated the 80% GR nanocomposite membrane had the highest water flux and methylene blue dye rejection rates compared to other ratios and the pristine PVDF membrane. Both fabricated membranes exhibited sufficient reusability and antifouling properties. However, 80% GR ratio exhibited superior antifouling properties, indicating its potential as an optimal material for improving membrane hydrophilicity and overall water purification technologies. These findings underscore the strategic utility of GR‐TiO2 nanocomposites for enhancing PVDF membrane performance in sustainable wastewater treatment applications.
3D printed gelatin methacryloyl hydrogels for perfusion culture of human trabecular meshwork cells and glaucoma studies
Authors: Adhikari Bikram , Barakoti Prasanga , Pantcheva Mina B. , Krebs Melissa D. 
Published: September 2024

AbstractGlaucoma, a progressive eye disease leading to irreversible blindness, currently affects over 70 million people globally. Elevated intraocular pressure (IOP) is implicated in its development. IOP is carefully regulated by the trabecular meshwork (TM). However, studying TM behavior has been limited to traditional tissue culture studies or costly ex vivo cultures of animal and donor eyes. Developing novel functional TM models could enhance cell/tissue behavior understanding and aid therapeutic development for glaucoma. In this study, we 3D printed a simplified and reproducible model of the human TM (hTM) and studied hTM cell behavior under static and dynamic cultures. Gelatin Methacryloyl bioinks proved suitable for printing with viable and proliferative hTM cells expressing crucial marker genes in response to glucocorticoid induction. This, to our knowledge, is the first functional 3D printed hTM model and aims to facilitate TM research. Moreover, this easily reproducible model could also be applicable in the study of numerous other cell types throughout the body.
Hybrid modeling for in silico optimization of a dynamic perfusion cell culture process
Authors: Agarwal Piyush , McCready Chris , Ng Say Kong , Ng Jake Chng , van de Laar Jeroen , Pennings Maarten , Zijlstra Gerben 
Published: September 2024

AbstractThe bio‐pharmaceutical industry heavily relies on mammalian cells for the production of bio‐therapeutic proteins. The complexity of implementing and high cost‐of‐goods of these processes are currently limiting more widespread patient access. This is driving efforts to enhance cell culture productivity and cost reduction. Upstream process intensification (PI), using perfusion approaches in the seed train and/or the main bioreactor, has shown substantial promise to enhance productivity. However, developing optimal process conditions for perfusion‐based processes remain challenging due to resource and time constraints. Model‐based optimization offers a solution by systematically screening process parameters like temperature, pH, and culture media to find the optimum conditions in silico. To our knowledge, this is the first experimentally validated model to explain the perfusion dynamics under different operating conditions and scales for process optimization. The hybrid model accurately describes Chinese hamster ovary (CHO) cell culture growth dynamics and a neural network model explains the production of mAb, allowing for optimization of media exchange rates. Results from six perfusion runs in Ambr® 250 demonstrated high accuracy, confirming the model's utility. Further, the implementation of dynamic media exchange rate schedule determined through model‐based optimization resulted in 50% increase in volumetric productivity. Additionally, two 5 L‐scale experiments validated the model's reliable extrapolation capabilities to large bioreactors. This approach could reduce the number of wet lab experiments needed for culture process optimization, offering a promising avenue for improving productivity, cost‐of‐goods in bio‐pharmaceutical manufacturing, in turn improving patient access to pivotal medicine.