bluuebunny/crossref_metadata_2025_split huggingface dataset:
Identification and Quantification of Charge Transfer in CaAl2O4:Eu2+,Nd3+ Persistent Phosphor
Authors: Kong Jintao , Meijerink Andries 
Published: May 2023

AbstractReversible charge transfer between lanthanide ions is identified as storage mechanism for the current workhorse persistent phosphors. Present evidence relies on sophisticated X‐ray absorption spectroscopy to detect the reversible charge transfer. Here, simple optical spectroscopy is used to study the charge transfer in one of the benchmark persistent phosphors CaAl2O4:Eu2+,Nd3+. Based on the observation that both the trapping and de‐trapping processes in CaAl2O4:Eu2+,Nd3+ are thermally activated, forward charge transfer from Eu2+ to Nd3+ and backward charge transfer from Nd2+ to Eu3+ are identified. The percentages of Eu2+ and Nd3+ involved in the charge transfer are >10%, which exceeds the previous estimates in other persistent phosphors. Furthermore, this strategy offers additional advantage of site selectivity, which enables the identification of the distinct contributions of different Nd3+ sites to the charge transfer. These findings underline the significance of reversible charge transfer in persistent phosphors and move towards a complete understanding of persistent luminescence mechanism.
Raman Spectroscopy of the Trapezoidal Bi2O2Se
Authors: Han Mengwei , Wu Shengqiang , Zhao Xiaoxu , He Qinming , Zhang Bangmin , Xiong Weiming , Luo Xin , Zheng Yue 
Published: May 2023

AbstractThe 2D Bi2O2Se has recently attracted significant interest with large Hall mobility at low temperature due to the depressed electron–phonon scattering. However, the phonon properties of Bi2O2Se are not well explored, and some Raman modes are under debate. Here, substrate engineering is used to grow an unexplored trapezoidal Bi2O2Se, which facilitates the Raman measurements in different orientation planes. Two additional Raman modes at 55 and 429 cm−1 are detected on the slope of the trapezoid besides the 159 and 362 cm−1 modes found on the top plane of the trapezoidal Bi2O2Se. Based on the polarized Raman spectroscopy, density functional theory calculations, and group theory analysis, the Raman modes of 55, 159, 362, and 429 cm−1 are assigned to the Eg, A1g, B1g, and Eg modes, respectively. There are two distinct types of angle‐resolved polarized Raman spectroscopy for the A1g mode on the top and edge planes of Bi2O2Se, which can be used to determine the crystal orientation unambiguously. Furthermore, strong thermal anisotropy is found in the top and edge planes of trapezoidal Bi2O2Se, as reflected from the first‐order temperature coefficient of A1g phonon mode. The novel growth strategy and interesting anisotropic phonon properties may open up potential applications of Bi2O2Se in nanoelectronics.
4D Optical Information Storage from LiGa5O8:Cr3+ Nanocrystal in Glass
Authors: Tang Haitao , Liu Zhichao , Zhang Hao , Zhu Xiaodie , Peng Qingpeng , Wang Wei , Ji Tao , Zhang Peng , Le Yakun , Yakovlev Aleksey Nikolaevich , Qiu Jianbei , Dong Guoping , Yu Xue , Xu Xuhui 
Published: May 2023

AbstractWith the fast‐growing amount of data, the state‐of‐the‐art optical data storage has become a front‐runner in the competing data storage technologies. However, two‐dimensional (2D) spatial resolution in the conventional optical data storage media has almost reached the limit. Herein, LiGa5O8:Cr3+ nanoparticles (NCs) precipitated in situ from a transparent medium are prepared. The transparent LiGa5O8:Cr3+ glass ceramics show excellent deep‐trap carriers storage ability under blue light irradiation and can realize the bit‐by‐bit optical data in 3D space for write‐in and read‐out in a photon trapping/detrapping mode. Moreover, this optical storage mechanism is also extended to 4D by realizing temperature optical encryption. Notably, the written information can still be clearly displayed even after being recorded for 200 days. This work enables 4D high‐precision storage of information and provides new insights into the design and fabrication of next‐generation storage materials.
Polar Nitride Perovskite LaWN3‐δ with Orthorhombic Structure
Authors: Zhou Xuefeng , Xu Wenwen , Gui Zhigang , Gu Chao , Chen Jian , Xie Jianyu , Yao Xiaodong , Dai Junfeng , Zhu Jinlong , Wu Liusuo , Guo Er‐jia , Yu Xiaohui , Fang Leiming , Zhao Yusheng , Huang Li , Wang Shanmin 
Published: May 2023

AbstractNitride perovskite LaWN3 has been predicted to be a promising ferroelectric material with unique properties for diverse applications. However, due to the challenging sample preparation at ambient pressure, the crystal structure of this nitride remains unsolved, which results in many ambiguities in its properties. Here, the authors report a comprehensive study of LaWN3 based on high‐quality samples synthesized by a high‐pressure method, leading to a definitive resolution of its crystal structure involving nitrogen deficiency. Combined with theoretical calculations, these results show that LaWN3 adopts an orthorhombic Pna21 structure with a polar symmetry, possessing a unique atomic polarization along the c‐axis. The associated atomic polar distortions in LaWN3 are driven by covalent hybridization of W: 5d and N: 2p orbitals, opening a direct bandgap that explains its semiconducting behaviors. The structural stability and electronic properties of this nitride are also revealed to be closely associated with its nitrogen deficiency. The success in unraveling the structural and electronic ambiguities of LaWN3 would provide important insights into the structures and properties of the family of nitride perovskites.
A Bioinspired Manganese‐Organic Framework Ameliorates Ischemic Stroke through its Intrinsic Nanozyme Activity and Upregulating Endogenous Antioxidant Enzymes
Authors: Wang Jian , Wang Yang , Xiaohalati Xiakeerzhati , Su Qiangfei , Liu Jingwei , Cai Bo , Yang Wen , Wang Zheng , Wang Lin 
Published: May 2023

AbstractFollowing stroke, oxidative stress induced by reactive oxygen species (ROS) aggravates neuronal damage and enlarges ischemic penumbra, which is devastating to stroke patients. Nanozyme‐based antioxidants are emerging to treat stroke through scavenging excessive ROS. However, most of nanozymes cannot efficiently scavenge ROS in neuronal cytosol and mitochondria, due to low‐uptake abilities of neurons and barriers of organelle membranes, significantly limiting nanozymes’ neuroprotective effects. To overcome this limitation, a manganese‐organic framework modified with polydopamine (pDA‐MNOF), capable of not only mimicking catalytic activities of natural SOD2's catalytic domain but also upregulating two endogenous antioxidant enzymes in neurons is fabricated. With such a dual anti‐ROS effect, this nanozyme robustly decreases cellular ROS and effectively protects them from ROS‐induced injury. STAT‐3 signaling is found to play a vital role in pDA‐MNOF activating the two antioxidant enzymes, HO1 and SOD2. In vivo pDA‐MNOF treatment significantly improves the survival of middle cerebral artery occlusion (MCAo) mice by reducing infarct volume and more importantly, promotes animal behavioral recovery. Further, pDA‐MNOF activates vascular endothelial growth factor expression, a downstream target of STAT3 signaling, thus enhancing angiogenesis. Taken together, the biochemical, cell‐biological, and animal‐level behavioral data demonstrate the potentiality of pDA‐MNOF as a dual ROS‐scavenging agent for stroke treatment.
Mechanically Robust and Room Temperature Self‐Healing Ionogel Based on Ionic Liquid Inhibited Reversible Reaction of Disulfide Bonds
Authors: Yang Lei , Sun Lijie , Huang Hongfei , Zhu Wenfan , Wang Yihan , Wu Zekai , Neisiany Rasoul Esmaeely , Gu Shijia , You Zhengwei 
Published: May 2023

AbstractAlthough highly desired, it is difficult to develop mechanically robust and room temperature self‐healing ionic liquid‐based gels (ionogels), which are very promising for next‐generation stretchable electronic devices. Herein, it is discovered that the ionic liquid significantly reduces the reversible reaction rate of disulfide bonds without altering its thermodynamic equilibrium constant via small molecule model reaction and activation energy evolution of the dissociation of the dynamic network. This inhibitory effect would reduce the dissociated units in the dynamic polymeric network, beneficial for the strength of the ionogel. Furthermore, aromatic disulfide bonds with high reversibility are embedded in the polyurethane to endow the ionogel with superior room temperature self‐healing performance. Isocyanates with an asymmetric alicyclic structure are chosen to provide optimal exchange efficiencies for the embedded disulfide bonds relative to aromatic and linear aliphatic. Carbonyl‐rich poly(ethylene‐glycol‐adipate) diols are selected as soft segments to provide sufficient interaction sites for ionic liquids to endow the ionogel with high transparency, stretchability, and elasticity. Finally, a self‐healing ionogel with a tensile strength of 1.65 ± 0.08 MPa is successfully developed, which is significantly higher than all the reported transparent room temperature self‐healing ionogel and its application in a 3D printed stretchable numeric keyboard is exemplified.
2D Nanosheet Spray Coating for Scalable Processing of High‐Energy‐Density Dielectric Polymer Films
Authors: Shi Mengjiao , Li Xinhui , Jiang Yanda , Li Shuxuan , Li Baowen , Zhang Xin , Zhang Shujun , Nan Ce‐Wen 
Published: May 2023

AbstractDielectric film capacitors with high power density and rapid charge–discharge capability are widely used as key components in modern electronic and electrical systems, and polymers are primary dielectric for film capacitors due to their low cost, flexibility, and ease of processing. Here, a surface engineering approach is reported to improve the energy storage properties of polymer films by directly spray coating 2D nanosheets on the polymer film surface. The spraying of 2D calcium niobate nanosheets on the surface of biaxially oriented polypropylene (BOPP) films leads to remarkably increased breakdown strength and dielectric constant, resulting in a maximum 64% enhancement of energy density compared to the pristine BOPP films. Ultraviolet irradiation is further employed to improve the adhesion of nanosheets to the BOPP film surface, leading to an ultrahigh energy density of 11.6 J cm−3 with a high energy efficiency of 90%, which is the highest energy density ever achieved in polypropylene‐based films. This work provides a universal, cost‐effective, and scalable approach to improve the energy density of dielectric polymer films, which is of great significance for the application of high‐energy‐density polymer films in compact and efficient power systems.
Molten Salt‐Assisted Synthesis of Single‐Crystalline Nonstoichiometric Li1+xNi1–xO2 with Improved Structural Stability
Authors: Ding Guoyu , Yao Meng , Li Jinhan , Yang Tingting , Zhang Yudong , Liu Kuiming , Huang Xinhui , Wu Zhonghan , Chen Jiayu , Wu Ziyan , Du Jiayong , Rong Changru , Liu Qi , Zhang Wei , Cheng Fangyi 
Published: May 2023

AbstractCobalt‐free LiNiO2 is an attractive cathode material with high energy density and low cost but suffers from severe structural degradation and poor performance. Here, a molten salt‐assisted synthesis combined with a Li‐refeeding strategy is proposed to obtain nonstoichiometric Li1+xNi1‐xO2 with submicron particle size and superior rate performance. The slightly Li‐rich and single‐crystalline characters inhibit Li+/Ni2+ anti‐site defects and mitigates the undesirable phase evolution. Remarkably, single‐crystalline Li1.045Ni0.955O2 exhibits a high specific capacity (218.7 mAh g−1 at 0.1 C), considerable rate capability (187.0 mAh g−1 at 5 C), and an initial Coulombic efficiency (89.62% at 0.1 C) in the 1.27 Ah pouch full cell employing the graphite anode, significantly outperforming near stoichiometric LiNiO2. Furthermore, the particulate morphology of Li1.045Ni0.955O2 remains intact at charge voltages up to 4.8 V, whereas near stoichiometric LiNiO2 features intragranular cracks and irreversible lattice distortion. This study underscores the value of molten salt‐assisted synthesis and Li‐refeeding modification to upgrade Ni‐based layered oxide cathode materials for advanced Li‐ion batteries.
Rational Anion Selection of the Electrolyte Additive for Highly Reversible Lithium Plating/Stripping
Authors: Zhu Zhenglu , Ji Jie , Qi Xiaoqun , Ji Yongsheng , Liu Zhikang , Du Weichen , Pan Yujun , Yang Dan , Ma Jiwei , Qie Long , Huang Yunhui 
Published: May 2023

AbstractRecruiting anions from electrolyte additives into the lithium ion solvation structure is a promising strategy for the construction of long‐lifespan Li‐metal batteries (LMBs). However, inadequate understanding of the anion‐involved Li+ solvation hinders the finding of new anion additives. Herein, using NO3− as an example, the effects of the newly‐introduced anion on the Li+ solvation structure are investigated. It is demonstrated that the added NO3− reduces the electrostatic potential of the Li+ solvation cluster, especially for solvated solvents, which improves electrolyte stability against the Li anode. However, such a conclusion is not universal for all anion additives. It is also confirmed that the anions with higher binding energy and smaller ion size are more apt to improve the Li stability and reversibility. Based on the above understanding, a new selection principle based on anion selection coefficient (the rate of the anion size to the binding energy toward Li+, unit: Å3 eV−1) is proposed, and with which a new hexafluorosilicate anion is found to be beneficial to LMBs.
Revisiting the impact of per‐unit duties on agricultural export prices
Authors: Fiankor Dela‐Dem , Santeramo Fabio G. 
Published: May 2023

AbstractWe replicate the findings of Emlinger and Guimbardr (ERAE, 2021) on the heterogeneous effects of per‐unit tariffs on trade patterns for developed and developing countries. Analyzing import and export data from 2001 to 2013, they confirm the Alchian‐Allen conjecture that per‐unit trade costs induce higher export unit values. However, the effects are more pronounced for developed country exporters. Understanding the effects of per‐unit trade costs vis‐a‐vis ad valorem tariffs is important to level the playing field of trade negotiations that involve pricing and non‐pricing policies. We extend the original study with data for 191 exporting (190 importing) countries, and 670 HS6 digit products, covering the period 2001–2019 period. The general findings of the original study hold, with remarkable differences. First, using a data set that is constructed in a replicable way and introducing highly relevant bilateral fixed effects reduce effect sizes and the level of statistical significance. Second, the Alchian‐Allen effect is not clearly separated by the economic development dimension of the exporter, but rather dependent on the price levels of the traded goods. These results have important policy implications as they call for deeper investigation of countries' industrial structures of exports to better shape the international debate on trade negotiations.
Establishment of thresholds for alternate wetting and drying irrigation management in rice
Authors: Atwill Richard L. , Spencer G. Dave , Bond Jason A. , Walker Timothy W. , Phillips J. Mike , Mills Brian E. , Krutz L. Jason 
Published: May 2023

AbstractThe long‐term viability of rice production in the midsouthern United States could be affected by irrigation management strategy. This study was conducted to determine if rice sustainability can be improved through manipulation of the irrigation threshold. The effects of an alternate wetting and drying (AWD) irrigation threshold and cultivar on water applied, rice grain yield, seed quality, irrigation water use efficiency, and net returns were investigated at Stoneville, MS, on a Sharkey clay (very fine, smectitic, thermic Chromic Epiaquert) during the 2015 through 2017 growing seasons. Water applied increased exponentially from 316 mm for the AWD threshold of −40 cm to 1061 mm for the conventional flood. For both hybrid and inbred lines, rice grain yield decreased linearly at a rate of 14 kg ha−1 for each centimeter decrease in irrigation threshold. Alternate wetting and drying irrigation threshold had no effect on seed quality parameters including chalk, milling total, and milling whole. Net returns were higher for AWD compared to a conventional flood for all cultivars. The economically optimal irrigation threshold was dependent on cultivar and rice price. Converting from a conventional flood to AWD will likely improve the sustainability of rice production in the midsouthern United States.
Photoredox synthesis of Vicinal Dichloride using FeCl3 as chlorine source
Authors: Wang Xinren , Shi Changyi , Yang Mengyu , Ma Yule , Chen Yadong , Lu Tao , Tang Weifang , Feng Jie 
Published: May 2023

AbstractThis work presents a photo‐redox vicinal dichlorination of acrylamides using a naturally abundant chlorine source (FeCl3). The LMCT of FeCl3 is responsible for the chlorine radical inducement, while the tetra‐n‐butylammonium decatungstate (TBADT) catalytic system enhanced the process. This method exhibits extraordinarily mild conditions, not requiring external ligands and low E factors, which enables scalable synthesis.
I2‐Mediated Oxidation of Amines in Water toward Imines and Amides
Authors: Wang Manman , Yu Wenquan , Chang Junbiao 
Published: May 2023

AbstractA sustainable oxidation reaction of amines in water is established for the synthesis of imines and amides employing environmentally benign molecular iodine as the sole oxidant. The features of the present reaction also include no use of transition metals, operational simplicity and gram‐scale synthesis. It provides a facile access to imine and amide derivatives including bioactive molecules from readily accessible amine precursors.
Shared Genetic Risk Factors for Multiple Sclerosis/Psoriasis Suggest Involvement of Interleukin‐17 and Janus Kinase–Signal Transducers and Activators of Transcription Signaling
Authors: Patrick Matthew T. , Nair Rajan P. , He Kevin , Stuart Philip E. , Billi Allison C. , Zhou Xiang , Gudjonsson Johann E. , Oksenberg Jorge R. , Elder James T. , Tsoi Lam C. 
Published: May 2023

ObjectivePsoriasis and multiple sclerosis (MS) are complex immune diseases that are mediated by T cells and share multiple comorbidities. Previous studies have suggested psoriatic patients are at higher risk of MS; however, causal relationships between the two conditions remain unclear. Through epidemiology and genetics, we provide a comprehensive understanding of the relationship, and share molecular factors between psoriasis and MS.MethodsWe used logistic regression, trans‐disease meta‐analysis and Mendelian randomization. Medical claims data were included from 30 million patients, including 141,544 with MS and 742,919 with psoriasis. We used genome‐wide association study summary statistics from 11,024 psoriatic, 14,802 MS cases, and 43,039 controls for trans‐disease meta‐analysis, with additional summary statistics from 5 million individuals for Mendelian randomization.ResultsPsoriatic patients have a significantly higher risk of MS (4,637 patients with both diseases; odds ratio [OR] 1.07, p = 1.2 × 10−5) after controlling for potential confounders. Using inverse variance and equally weighted trans‐disease meta‐analysis, we revealed >20 shared and opposing (direction of effect) genetic loci outside the major histocompatibility complex that showed significant genetic colocalization (in COLOC and COLOC‐SuSiE v5.1.0). Co‐expression analysis of genes from these loci further identified distinct clusters that were enriched among pathways for interleukin‐17/tumor necrosis factor‐α (OR >39, p < 1.6 × 10−3) and Janus kinase–signal transducers and activators of transcription (OR 35, p = 1.1 × 10−5), including genes, such as TNFAIP3, TYK2, and TNFRSF1A. Mendelian randomization found psoriasis as an exposure has a significant causal effect on MS (OR 1.04, p = 5.8 × 10−3), independent of type 1 diabetes (OR 1.05, p = 4.3 × 10−7), type 2 diabetes (OR 1.08, p = 2.3 × 10−3), inflammatory bowel disease (OR 1.11, p = 1.6 × 10−11), and vitamin D level (OR 0.75, p = 9.4 × 10−3).InterpretationBy investigating the shared genetics of psoriasis and MS, along with their modifiable risk factors, our findings will advance innovations in treatment for patients suffering from comorbidities. ANN NEUROL 2023;94:384–397
Ultra‐microporous MAF stu‐1 modified by ammonia for efficient CO2 capture
Authors: Wei Xiaojuan , Li Mianjing , Jiang Tao , Lou Shi Nee , Wang Shengping 
Published: May 2023

AbstractA series of ultra‐microporous rod‐shaped three‐dimensional metal organic frameworks MAF stu‐1 modified with different amounts of ammonia water were synthesized by solvothermal method using chelated nitrogen‐containing ligands, which was applied to CO2 capture and exhibited excellent adsorption performance and CO2/N2 (15:85, v/v) separation efficiency. MAF stu‐1‐C regulated by .13 mol NH3 had small pore size of 4.9 Å and uncoordinated imidazole nitrogen sites in the channel, which were beneficial to improving CO2 adsorption capacity and selectivity. The maximal CO2 adsorption capacity of MAF stu‐1‐C was 110 cm3/g, exhibiting excellent CO2 capture ability and cycle stability. The ideal adsorption solution theory (IAST) model was used to calculate the adsorption and separation ratio of CO2 to N2. The CO2 to N2 selectivity of the modified adsorbent was more than 100. Furthermore, the adsorption heat of MAF stu‐1‐C for CO2 was calculated to be about 35 kJ/mol by virial equation fitting method, indicating that the modified adsorbent also had remarkable regeneration performance.
Design, Synthesis and Biological Evaluation of Novel Catalpol Derivatives as Potential Pancreatic Cancer Inhibitors
Authors: Kong Yuanfang , Liu Shuanglin , Wang Shaopei , Xu Jindan , Hu Yulong , Jiang Shiqing , Dong Chunhong 
Published: May 2023

AbstractA series of C10‐position imidazole‐modified catalpol derivatives are specifically designed and synthesized for serving as potential pancreatic cancer inhibitors, which are characterized by 1H NMR, 13C NMR and high‐resolution mass spectrometry (HRMS). They were evaluated by the 3‐[4, 5‐dimethylthiazol‐2‐yl]‐2, 5‐diphenyltetrazolium bromide (MTT) test on two human pancreatic cancer cells PANC‐1, BxPC‐3 and normal pancreatic cell HPDE6‐C7, which showed the significant inhibitory effected on the growth of human pancreatic cancer cells of PANC‐1 and BxPC‐3, especially 91.6% efficacy on BxPC‐3, and 73.1% on PANC‐1. Simulation studies like molecular docking supported strong binding of vascular endothelial growth factor receptor 2 (VEGFR‐2) protein tyrosine kinase (PDB ID: 4AGD), a target of pancreatic cancer. A novel imidazol‐modified catalpol compound 3i with strong inhibitory effect on pancreatic cancer cells, which could potentially develop into anti‐pancreatic cancer drug candidates in the future.