bluuebunny/crossref_metadata_2025_split huggingface dataset:
Tailoring 3D Printed Micro‐Structured Carbons for Adsorption
Authors: Scott Stuart , Chew John , Barnard Jonathan , Burrows Andrew , Smith Martin , Tennison Steven , Perera Semali 
Published: May 2023

AbstractThe manufacture of tailored carbon‐based adsorbent structures with exceptionally low‐pressure drops and improved kinetics using stereolithographic 3D printing is presented. Adsorbent structures are printed from commercial resins with square, circular, and hexagonal cross‐sectional microchannels. These structures can reduce energy use by 50–95% compared to conventional carbon‐packed beds. The activated 3D printed carbon achieves Brunauer–Emmett–Teller surface areas over 1000 m2 g−1 and shows outstanding butane adsorption capacities, over twice the capacity of a commercial carbon and a comparable capacity to phenolic‐based carbons. The structures also show excellent uptakes of cyclohexane, up to 0.62 g g−1 in a saturated feed. The introduction of complex axial geometries including spirals and chevrons enable superior adsorption kinetics and premature breakthrough of contaminants at high gas flow rates. These results demonstrate the success of intelligent manufacturing of low‐pressure drop, high‐capacity micro‐structured adsorbents, allowing for the development of gas separation technologies for applications such as greenhouse gas removal and respiratory protection.
Stimuli‐Responsive Peptide Self‐Assembly to Construct Hydrogels with Actuation and Shape Memory Behaviors
Authors: Xiang Yanxin , Liu Can , Ma Shinan , Wang Xiaoting , Zhu Linyong , Bao Chunyan 
Published: May 2023

AbstractHydrogel actuators, capable of generating reversible deformation in response to external stimulus, are widely considered as new emerging intelligent materials for applications in soft robots, smart sensors, artificial muscles, and so on. Peptide self‐assembly is widely applied in the construction of intelligent hydrogel materials due to their excellent stimulus response. However, hydrogel actuators based on peptide self‐assembly are rarely reported and explored. In this study, a pH‐responsive peptide (MA‐FIID) is designed and introduced into a poly(N‐isopropyl acrylamide) backbone (PNIPAM) to construct bilayer and heterogeneous hydrogel actuators based on the assembly and disassembly of peptide molecules under different pH conditions. These peptide‐containing hydrogel actuators can perform controllable bending, bucking, and complex deformation under pH stimulation. Meanwhile, the Hofmeister effect of PNIPAM hydrogels endows these peptide‐containing hydrogels with enhanced mechanical strength, ionic stimulus response (CaCl2), and excellent shape‐memory property. This work broadens the application of supramolecular self‐assembly in the construction of intelligent hydrogels, and also provides new inspirations for peptide self‐assembly to construct smart materials.
Resistive Switching and Current Conduction Mechanisms in Hexagonal Boron Nitride Threshold Memristors with Nickel Electrodes
Authors: Völkel Lukas , Braun Dennis , Belete Melkamu , Kataria Satender , Wahlbrink Thorsten , Ran Ke , Kistermann Kevin , Mayer Joachim , Menzel Stephan , Daus Alwin , Lemme Max C. 
Published: May 2023

AbstractThe 2D insulating material hexagonal boron nitride (h‐BN) has attracted much attention as the active medium in memristive devices due to its favorable physical properties, among others, a wide bandgap that enables a large switching window. Metal filament formation is frequently suggested for h‐BN devices as the resistive switching (RS) mechanism, usually supported by highly specialized methods like conductive atomic force microscopy (C‐AFM) or transmission electron microscopy (TEM). Here, the switching of multilayer hexagonal boron nitride (h‐BN) threshold memristors with two nickel (Ni) electrodes is investigated through their current conduction mechanisms. Both the high and the low resistance states are analyzed through temperature‐dependent current–voltage measurements. The formation and retraction of nickel filaments along boron defects in the h‐BN film as the resistive switching mechanism is proposed. The electrical data are corroborated with TEM analyses to establish temperature‐dependent current–voltage measurements as a valuable tool for the analysis of resistive switching phenomena in memristors made of 2D materials. The memristors exhibit a wide and tunable current operation range and low stand‐by currents, in line with the state of the art in h‐BN‐based threshold switches, a low cycle‐to‐cycle variability of 5%, and a large On/Off ratio of 107.
Strain Retarding in Multilayered Hierarchical Sn‐Doped Sb Nanoarray for Durable Sodium Storage
Authors: Li Xinyan , Zhang Xin , Niu Xiaobin , Zhang Jing , Wu Rui , Chen Jun Song , Yu Yan 
Published: May 2023

AbstractAntimony (Sb) is a potential electrode material for sodium (Na) storage due to its high theoretical capacity of 660 mAh g−1. Yet, the alloy/dealloy reaction between Na and Sb induces detrimental structural strain that inevitably leads to electrode failure, further resulting in deteriorated rate performance and cycle life. Herein, inspired by the multilayered structure of the pine trees, 3D hierarchical multilayered tin (Sn)‐doped Sb nanoarray coated with a thin carbon (C) layer (Sb(Sn)@C) is developed. Density functional theory calculation results suggest that Sb(Sn)@C offers better kinetic properties for Na diffusion, and lower volume expansion upon sodium intercalation as compared to the counterparts without Sn dopant or carbon coating. Moreover, the simulation results based on finite element analysis suggest that the unique hierarchical multilayered construction not only provides highly efficient Na+ utilization, but also builds a uniform von Mises stress distribution that effectively confines structural strain induced during Na+ insertion. This is also verified by nanoindentation measurement that Sb(Sn)@C shows higher elastic modulus and hardness than Sb(Sn) and pure Sb, indicating best mechanical stability. As expected, Sb(Sn)@C achieves excellent electrochemical capability for sodium storage with high reversible capacity, enhanced cyclability, and remarkable rate performance.
A Conductive 2D Conjugated Tetrathia[8]circulene‐Based Nickel Metal–Organic Framework for Energy Storage
Authors: Chang Zixin , Zhu Mengsu , Sun Yong , He Feng , Li Yang , Ye Chunhui , Jin Yigang , Li Ze , Xu Wei 
Published: May 2023

AbstractHerein, a novel D4 symmetrical redox‐active ligand tetrathia[8]circulene‐2,3,5,6,8,9,11,12‐octaol (8OH‐TTC) is designed and synthesized, which coordinates with Ni2+ ions to construct a 2D conductive metal‐organic framework (2D c‐MOF) named Ni‐TTC. Ni‐TTC exhibits typical semiconducting properties with electrical conductivity up to ≈1.0 S m−1 at 298 K. Furthermore, magnetism measurements show the paramagnetic property of Ni‐TTC with strong antiferromagnetic coupling due to the presence of semiquinone ligand radicals and Ni2+ sites. In virtue of its decent electrical conductivity and good redox activity, the gravimetric capacitance of Ni‐TTC is up to 249 F g−1 at a discharge rate of 0.2 A g−1, which demonstrates the potential of tetrathia[8]circulene‐based redox‐active 2D c‐MOFs in energy storage applications.
Zwitterion Functionalized Graphene Oxide/Polyacrylamide/Polyacrylic Acid Hydrogels with Photothermal Conversion and Antibacterial Properties for Highly Efficient Uranium Extraction from Seawater
Authors: Li Hui , Sun Jian , Qin Shiliang , Song Yucheng , Liu Zhong , Yang Peipei , Li Songwei , Liu Chuntai , Shen Changyu 
Published: May 2023

AbstractIn this study, graphene oxide (GO) and polyacrylamide/polyacrylic acid (PAM/PAA) are used to prepare hydrogels with photothermal conversion properties for highly efficient uranium extraction from seawater. Zwitterionic 2‐methacryloyloxy ethyl phosphorylcholine (MPC) is introduced in the PAM/PAA/GO hydrogel to obtain PAM/PAA/GO/MPC (PAGM), exhibiting good antibacterial properties. PAGM demonstrates efficient and specific adsorption of uranium (VI) (U(VI)). Under light conditions, the adsorption capacity of PAGM reaches 196.12 mg g−1 (pH = 8, t = 600 min, C0 = 99.8 mg L−1, m/v = 0.5 g L−1). The adsorption capacity is only 160.29 mg g−1 under dark conditions (pH = 8, t = 600 min, C0 = 99.8 mg L−1, m/v = 0.5 g L−1). The adsorption capacity of light is 22.5% higher than that of dark. The adsorption process is fitted using the Langmuir and pseudo‐second‐order models. Furthermore, PAGM exhibits good repeatability and stability after five adsorption–desorption cycles. PAGM exhibits a U(VI) adsorption capacity of 6.1 mg g−1 after storage for one month in natural seawater. The X‐ray photoelectron spectroscopy (XPS) results demonstrate that the coordination of the amino, carboxyl, and hydroxyl groups with U(VI) is the primary mechanism of U(VI) adsorption. The mechanism is confirmed through detailed density functional theory calculations. PAGM demonstrates durability, high efficiency, photothermal conversion properties, and antibacterial properties. Thus, it is a promising candidate for uranium extraction from seawater.
Highly Stretchable and Flexible Electrospinning‐Based Biofuel Cell for Implantable Electronic
Authors: Guan Shoujie , Wang Jingxi , Yang Yang , Zhu Xun , Zhou Jianping , Ye Dingding , Chen Rong , Dai Hongwei , Liao Qiang 
Published: May 2023

AbstractWith the emerging demand of implantable microelectronics, it essentially requires the fully integrated and reliable power supplies. The study reports a stretchable and flexible electrospinning‐based glucose/O2 biofuel cell with glucose oxidase bioanode, Pt/C cathode and thermoplastic polyurethane substrate, which is capable for adapting to the various stresses and strains caused by individual movement. The rigid benzene rings and elastic chain segments of thermoplastic polyurethane ensure its superior tensile property. Furthermore, the stable covalent connections between the activated carbon nanotubes (CNTs‐COOH) and glucose oxidase inside 3D thermoplastic polyurethane network are established by amide reaction to ensure the rapid direct electron transfer of bioanode and stable power output of device in flexible environments. The biofuel cell exhibits an open circuit voltage of 0.575 V, and high‐power density of 57 µW cm−2 in 5 mM glucose. Moreover, the power‐generation properties of implantable biofuel cell keep steady, and its power density exhibits limited fluctuations on the dorsum of rat when bending, stretching, and twisting in 28 days. There is no obvious local inflammation or systemic abnormalities in rats. It satisfies the impressive biocompatible requirement, demonstrating the promising potential of electrospinning‐based biofuel cell as a robust self‐sustained power source for implantable electronics.
Super Flexible and High Mobility Inorganic/Organic Composite Semiconductors for Printed Electronics on Polymer Substrates
Authors: Divya Mitta , Cherukupally Nikhil , Gogoi Sanat Kumar , Pradhan Jyoti Ranjan , Mondal Sandeep Kumar , Jain Manish , Senyshyn Anatoliy , Dasgupta Subho 
Published: May 2023

AbstractIn solution‐processed flexible electronics, it is challenging to obtain superior electrical and mechanical performance simultaneously. Attempts have been made to fabricate polymer doped oxide thin film transistors (TFTs), where, polymer doping frustrates the crystal structure of the parent oxide and causes amorphization. However, it also degrades the device mobility rapidly, thereby, limiting the allowable polymer content to only small values, which may not be sufficient for decisive enhancement in mechanical performance. In contrast, here an approach is proposed, where a set of water‐insoluble and chemically inert polymers are chosen to form inorganic/organic composite semiconductors. Herein, these selected polymers oppose a large degree of intermixing with the parent oxide lattice at the atomic scale, promote its crystallization, and help to maintain the electrical properties of the oxide semiconductors intact, even when they're in near‐equal amounts. Consequently, unaltered linear mobility of 40–45 cm2 V−1 s−1 can be obtained in In2O3‐based inorganic/organic composite semiconductor TFTs with a near‐equal weight of polymeric additives. Owing to the large polymer content, the TFTs are found to survive rigorous bending fatigue tests down to 1.5 mm bending radius without any deterioration in their electrical performance and without the formation of micro‐cracks in the composite semiconductor material.
Theoretical Prediction‐Assisted Synthesis and Characterization of Infrared Nonlinear Optical Material NaSrBS3
Authors: Yun Yihan , Wu Mengfan , Xie Congwei , Yang Zhihua , Li Guangmao , Pan Shilie 
Published: May 2023

AbstractNaSrBS3, the first noncentrosymmetric alkali and alkaline earth metal mixed thioborate with the isolated [BS3] as the building units, has been synthesized successfully under the guidance of theoretical prediction. Comprehensive characterizations reveal that NaSrBS3 exhibits wide bandgap (3.94 eV), large birefringence (0.185 at 1064 nm), a high laser‐induced damage threshold (9 × AGS), and a suitable phase‐matching second‐harmonic generation (SHG) response (0.3 × AGS). Structure‐properties analyses illustrate that the [BS3] units determine the bandgap and contribute the most to the birefringence and SHG response. This work is the first successful case of “prediction to synthesis” involving infrared (IR) nonlinear optical (NLO) crystals in the thioborate system and provides an avenue to SHG materials design.
Palladium‐Catalyzed Stereospecific S‐Glycosylation by Allylic Substitution
Authors: Wang Yanyan , Cao Zhen , Wang Nengzhong , Liu Mingguo , Zhou Haifeng , Wang Long , Huang Nianyu , Yao Hui 
Published: May 2023

AbstractS‐Glycosides are considerably more stable toward chemical degradation and enzymatic hydrolysis than O‐glycosides, and thioglyco‐peptides/proteins also demonstrate critical bioactivities in the living system. However, the general and stereoselective synthetic strategies are still challenging. Herein, a versatile S‐glycosylation approach was developed by palladium‐catalyzed allylic substitution to form α‐ and β‐thioglycosides respectively under mild conditions. A wide range of substrates were tolerated to afford thioglycosides in a stereospecific manner with 70%–86% yields. This protocol also created the quick access to various S‐linked disaccharides and glycopeptides.magnified image
HFIP & Brønsted Acid Promoted Direct Distal C‐Alkylation of 2‐Oxindoles and Anilines with Donor‐Acceptor Cyclopropanes
Authors: Raj Singh Prasoon , Lamba Manisha , Singh Divyasha , Goswami Avijit 
Published: May 2023

AbstractInstallation of an alkyl chain at a specified position in the aromatic ring via metal‐free catalysis is very important. In this regard, we have developed a facile metal‐free, extremely selective, user‐friendly, environmentally benign and cost‐effective Friedel‐Crafts (FC) alkylation protocol for 2‐oxindoles and anilines with donor‐acceptor cyclopropanes. Real‐time NMR studies reveal that the transformation is governed by the cooperative catalysis of Brønsted acid (TfOH) and HFIP, which facilitates the nucleophilic attack on donor‐acceptor cyclopropanes from 2‐oxindoles and anilines.magnified image
Synthesis of Cyclopenta[b]indoles via Rhodium‐Catalyzed Cascade Migration‐Annulation of 1‐Sulfonyl‐1,2,3‐triazoles and Indoles
Authors: Xu Huaping , Wang Heng , Xu Ze‐Feng , Duan Shengguo , Li Chuan‐Ying 
Published: May 2023

AbstractA rhodium‐catalyzed cascade 1,3‐sulfinate migration, intermolecular [3+2] annulation of 1‐sulfonyl‐1,2,3‐triazoles and indoles was achieved. The one‐pot protocol provided a method to construct cyclopenta[b]indoles bearing four stereocenters in 45% to 99% yields with 1.6:1 to >20:1 diastereoselectivities. In addition, cyclopenta[b]indoles could be transformed into a variety of functionalized compounds, demonstrating the synthetic value of this migration‐annulation strategy in ring system synthesis.magnified image
Self‐Driven Fast‐Speed Photodetector Based on BP/ReS2 van der Waals Heterodiode
Authors: Ding Jingzu , Wang Xiaoqing , Song Ze , Wang Suofu , Lu Yuan , Wang Wenhui , Han Tao , Li Feng , Zhu Xiangde , Shan Lei , Long Mingsheng 
Published: May 2023

AbstractBroadband photodetectors based on 2D layered materials provide great potential applications in night vision, sensing, and communications. However, it remains a challenge for detectors to achieve both high photoresponsivity and fast response. Here, a high‐sensitive photodetector based on ReS2/BP van der Waals (vdW) heterodiode with fast speed, rising time (τr) of 770 ns, and decay time (τd) of 760 ns under a 637 nm laser is reported. The detection range is covered from visible to mid‐wave infrared (MWIR) 0.405–3.753 μm. In the visible range, a high photoresponsivity of 107.1 AW−1, competitive specific detectivity (D*) of 1.89 × 1010 cm Hz1/2 W−1, and a low noise equivalent power of 3.03 × 10−14 W Hz−1/2 are obtained. In the MWIR the D* of 3.26 × 108 cm Hz1/2 W−1 is demonstrated in the photovoltaic model. Notably, the photodiode realizes a high external quantum efficiency of 71.8%, and a high power conversion efficiency of 2.0%. This work provides a way to design broadband response and fast‐speed self‐driven photodetectors with great potential applications in weak light intensity.
The Regulatory Roles of Mitochondrial Metabolism Dynamics and Mitochondria Calcium Uniporter (MCU) in Bevacizumab Resistance of GBM
Authors: Kim Yejin , Kwak Chulhwan , Park Jong Bae , Nam Do‐Hyun , Rhee Hyun‐Woo , Kim Sung Soo 
Published: May 2023

AbstractAdapted oxidative phosphorylation (OXPHOS) and tricarboxylic acid (TCA) cycle activations are essential tumor microenvironments for abnormal energy consumption to acquire malignancy and drug resistance during cancer development and progression. To elucidate the molecular mechanism related to the mitochondrial metabolic dynamics and drug resistance in glioblastoma (GBM), a longitudinal GBM orthotopic mouse model with acquired resistance to bevacizumab is established. The longitudinal proteomic analysis results show that OXPHOS, TCA, and calcium signaling gene sets are enriched in the bevacizumab pre‐resistance phase for preparing resistance phase. Then, the APEX system to GBM to biotinylate and purify proteins of the mitochondria matrix is applied. The organelle specific proteomic analysis shows that the pore‐forming subunits of the mitochondrial calcium uniporter protein (MCU) are essential for acquiring bevacizumab resistance. Additionally, a combination effect of hypoxia and the MCU‐specific inhibitor DS16570511 in vitro shows that cell growth and proliferation are reduced via inhibition of NF‐κB and CEBP/β signaling pathways. In conclusion, the hypoxic tumor microenvironment induced by bevacizumab treatment affects mitochondrial metabolic dynamics, and targeting MCU is a promising therapeutic option in combination with bevacizumab in recurrent GBM.
Long‐Chain Acyl Carnitines Aggravate Polystyrene Nanoplastics‐Induced Atherosclerosis by Upregulating MARCO
Authors: Wang Bo , Liang Boxuan , Huang Yuji , Li Zhiming , Zhang Bingli , Du Jiaxin , Ye Rongyi , Xian Hongyi , Deng Yanhong , Xiu Jiancheng , Yang Xingfen , Ichihara Sahoko , Ichihara Gaku , Zhong Yizhou , Huang Zhenlie 
Published: May 2023

AbstractExposure to micro‐ and nanoplastics (MNPs) is common because of their omnipresence in environment. Recent studies have revealed that MNPs may cause atherosclerosis, but the underlying mechanism remains unclear. To address this bottleneck, ApoE−/− mice are exposed to 2.5–250 mg kg−1 polystyrene nanoplastics (PS‐NPs, 50 nm) by oral gavage with a high‐fat diet for 19 weeks. It is found that PS‐NPs in blood and aorta of mouse exacerbate the artery stiffness and promote atherosclerotic plaque formation. PS‐NPs activate phagocytosis of M1‐macrophage in the aorta, manifesting as upregulation of macrophage receptor with collagenous structure (MARCO). Moreover, PS‐NPs disrupt lipid metabolism and increase long‐chain acyl carnitines (LCACs). LCAC accumulation is attributed to the PS‐NP‐inhibited hepatic carnitine palmitoyltransferase 2. PS‐NPs, as well as LCACs alone, aggravate lipid accumulation via upregulating MARCO in the oxidized low‐density lipoprotein‐activated foam cells. Finally, synergistic effects of PS‐NPs and LCACs on increasing total cholesterol in foam cells are found. Overall, this study indicates that LCACs aggravate PS‐NP‐induced atherosclerosis by upregulating MARCO. This study offers new insight into the mechanisms underlying MNP‐induced cardiovascular toxicity, and highlights the combined effects of MNPs with endogenous metabolites on the cardiovascular system, which warrant further study.
Mass Production of Customizable Core–Shell Active Materials in Seconds by Nano‐Vapor Deposition for Advancing Lithium Sulfur Battery
Authors: Feng Lanxiang , Zhu Zhiwei , Yan Rui , Fu Xuewei , He Xuewei , Wu Dichen , Li Hua , Guo Zaiping , Yang Wei , Wang Yu 
Published: May 2023

AbstractRational design and scalable production of core–shell sulfur‐rich active materials is vital for not only the practical success of future metal–sulfur batteries but also for a deep insight into the core–shell design for sulfur‐based electrochemistry. However, this is a big challenge mainly due to the lack of efficient strategy for realizing precisely controlled core–shell structures. Herein, by harnessing the frictional heating and dispersion capability of the nanostorm technology developed in the authors’ laboratory, it is surprisingly found that sulfur‐rich active particles can be coated with on‐demand shell nanomaterials in seconds. To understand the process, a micro‐adhesion guided nano‐vapor deposition (MAG‐NVD) working mechanism is proposed. Enabled by this technology, customizable nano‐shell is realized in a super‐efficient and solvent‐free way. Further, the different roles of shell characteristics in affecting the sulfur‐cathode electrochemical performance are discovered and clarified. Last, large‐scale production of calendaring‐compatible cathode with the optimized core–shell active materials is demonstrated, and a Li–S pouch‐cell with 453 Wh kg−1@0.65 Ah is also reported. The proposed nano‐vapor deposition may provide an attractive alternative to the well‐known physical and chemical vapor deposition technologies.
Self‐Degradable Nanogels Reshape Immunosuppressive Tumor Microenvironment via Drug Repurposing Strategy to Reactivate Cytotoxic CD8+ T Cells
Authors: Tian Hao , Li Wenxi , Wang Guohao , Tian Ye , Yan Jie , Zhou Songtao , Yu Xinying , Li Bei , Dai Yunlu 
Published: May 2023

AbstractIntratumoral CD8+ T cells are crucial for effective cancer immunotherapy, but an immunosuppressive tumor microenvironment (TME) contributes to dysfunction and insufficient infiltration. Drug repurposing has successfully led to new discoveries among existing clinical drugs for use as immune modulators to ameliorate immunosuppression in TME and reactivate T‐cell‐mediated antitumor immunity. However, due to suboptimal tumor bioavailability, the full potential of immunomodulatory effects of these old drugs has not been realized. The self‐degradable PMI nanogels carrying two repurposed immune modulators, imiquimod (Imi) and metformin (Met), are reported for TME‐responsive drug release. It remodels the TME through the following aspects: 1) promoting dendritic cells maturation, 2) repolarizing M2‐like tumor‐associated macrophages, and 3) downregulating PD‐L1 expression. Ultimately, PMI nanogels reshaped the immunosuppressive TME and efficiently promote CD8+ T cell infiltration and activation. These results support that PMI nanogels can potentially be an effective combination drug for enhancing the antitumor immune response of anti‐PD‐1 antibodies.