bluuebunny/crossref_metadata_2025_split huggingface dataset:
Organocatalyzed Photo‐Controlled Synthesis of Ultrahigh‐Molecular‐Weight Fluorinated Alternating Copolymers
Authors: Zhou Chengda , Zhang Zexi , Li Weiping , Chen Mao 
Published: November 2023

AbstractUltrahigh‐molecular‐weight (UHMW) polymers with tailored structures are highly desirable for the outstanding properties. In this work, we developed a novel photoorganocatalyzed controlled radical alternating copolymerizations of fluoroalkyl maleimide and diverse vinyl comonomers, enabling efficient preparation of fluorinated copolymers of predetermined UHMWs and well‐defined structures at high conversions. Versatility of this method was demonstrated by expanding to controlled terpolymerization, which allows facial access toward fluorinated terpolymers of UHMWs and functional pendants. The obtained copolymers exhibited attractive physical properties and furnished thermoplastic, anticorrosive and (super)hydrophobic attributes as coatings on different substrates. Molecular simulations provided insights into the coating morphology, which unveiled a fluorous protective layer on the top surface with polar groups attached to the bottom substrate, resulting in good adhesion and hydrophobicity, simultaneously. This synthetic method and customized copolymers shed light on the design of high‐performance coatings by macromolecular engineering.
Mg(C3O4H2)(H2O)2: A New Ultraviolet Nonlinear Optical Material Derived from KBe2BO3F2 with High Performance and Excellent Water‐Resistance
Authors: Wu Lingli , Lin Chensheng , Tian Haotian , Zhou Yuqiao , Fan Huixin , Yang Shunda , Ye Ning , Luo Min 
Published: November 2023

AbstractAcquiring high‐performance ultraviolet (UV) nonlinear optical (NLO) materials that simultaneously exhibit a strong second harmonic generation (SHG) coefficients, as short as possible SHG phase‐matching (PM) wavelength and non‐hygroscopic properties has consistently posed a significant challenge. Herein, through multicomponent modification of KBe2BO3F2 (KBBF), an excellent UV NLO crystal, Mg(C3O4H2)(H2O)2, was successfully synthesized in malonic system. This material possesses a unique 2D NLO‐favorable electroneutral [Mg(C3O4H2)3(H2O)2]∞ layer, resulting in the rare coexistence of a strong SHG response of 3×KDP (@1064 nm) and short PM wavelength of 200 nm. More importantly, it exhibits exceptional water resistance, which is rare among ionic organic NLO crystals. Theoretical calculations revealed that its excellent water‐resistant may be originated from its small available cavity volumes, which is similar to the famous LiB3O5 (LBO). Therefore, excellent NLO properties and stability against air and moisture indicate it should be a promising UV NLO crystal.
A General Synthesis of Nanostructured Conductive Metal–Organic Frameworks from Insulating MOF Precursors for Supercapacitors and Chemiresistive Sensors
Authors: Huang Chuanhui , Sun Weiming , Jin Yingxue , Guo Quanquan , Mücke David , Chu Xingyuan , Liao Zhongquan , Chandrasekhar Naisa , Huang Xing , Lu Yang , Chen Guangbo , Wang Mingchao , Liu Jinxin , Zhang Geping , Yu Minghao , Qi Haoyuan , Kaiser Ute , Xu Gang , Feng Xinliang , Dong Renhao 
Published: November 2023

AbstractTwo‐dimensional conjugated metal–organic frameworks (2D c‐MOFs) are emerging as a unique subclass of layer‐stacked crystalline coordination polymers that simultaneously possess porous and conductive properties, and have broad application potential in energy and electronic devices. However, to make the best use of the intrinsic electronic properties and structural features of 2D c‐MOFs, the controlled synthesis of hierarchically nanostructured 2D c‐MOFs with high crystallinity and customized morphologies is essential, which remains a great challenge. Herein, we present a template strategy to synthesize a library of 2D c‐MOFs with controlled morphologies and dimensions via insulating MOFs‐to‐c‐MOFs transformations. The resultant hierarchically nanostructured 2D c‐MOFs feature intrinsic electrical conductivity and higher surface areas than the reported bulk‐type 2D c‐MOFs, which are beneficial for improved access to active sites and enhanced mass transport. As proof‐of‐concept applications, the hierarchically nanostructured 2D c‐MOFs exhibit a superior performance for electrical properties related applications (hollow Cu‐BHT nanocubes‐based supercapacitor and Cu‐HHB nanoflowers‐based chemiresistive gas sensor), achieving over 225 % and 250 % improvement in specific capacity and response intensity over the corresponding bulk type c‐MOFs, respectively.
Grain‐growth Inhibitor with Three‐section‐sintering for Highly Dispersed Single‐crystal NCM90 Cubes
Authors: Huang Hao , Zhu Hongjian , Gao Jian , Wang Jiantao , Shao Minhua , Zhou Weidong 
Published: November 2023

AbstractSingle crystallization of LiNixCoyMn1‐x‐yO2(NCM) is currently an effective strategy to improve the cycling life of NCM cathode, owing to the reduced surface area and enhanced mechanical strength, but the application of single crystal NCM(SC‐NCM) is being hindered by severe particle agglomeration and poor C‐rate performance. Here, a strategy of three‐section‐sintering(TSS) with the presence of grain‐growth inhibitor was proposed, in which, the TSS includes three sections of phase‐formation, grain‐growth and phase‐preservation. While, the addition of MoO3 inhibits the grain growth and restrains the particle agglomeration. With the help of TSS and 1 mol % of MoO3, highly dispersed surface Mo‐doped SC‐NCM(MSC‐NCM) cubes are obtained with the average diameter of 1.3 μm. Benefiting from the surface Mo‐doping and the reduced surface energy, the Li+‐migration preferred (1 0 4) crystalline facet is exposed as the dominant plane in MSC‐NCM cubes, because of which, C‐rate performance is significantly improved compared with the regular SC‐NCM. Furthermore, this preparation strategy is compatible well with the current industrial production line, providing an easy way for the large‐scale production of SC‐NCM.
Controlled cluster expansion at a Zintl cluster surface
Authors: Townrow Oliver P. E. , Weller Andrew S. , Goicoechea Jose M. 
Published: November 2023

AbstractReaction of the tris‐hypersilyl nonagermanide Zintl cluster salt, K[Ge9(Hyp)3] (Hyp=Si(SiMe3)3) with [Rh(η2,η2‐L)Cl]2 (L=1,5‐cyclooctadiene, COD; norbornadiene, NBD) afforded eleven‐ and twelve‐vertex homo‐multimetallic clusters by cluster core expansion. Using a stepwise procedure, starting from the Zintl cluster [Rh(COD){Ge9(Hyp)3}] and [Ir(COD)Cl]2, this methodology was expanded for the synthesis of eleven‐vertex hetero‐multimetallic clusters. A mechanism for the formation of these first examples of closo eleven‐vertex Zintl clusters is proposed, informed by density functional theory calculations.
Study on porous layer formation kinetics under CO2‐aqueous conditions via partial‐bounceback lattice Boltzmann method
Authors: Chen Jukai , Wang Xiaodan , Wang Yueshe , Li Haisheng , Chen Yinghua 
Published: November 2023

AbstractThe porous layer of FeCO3, as a main corrosion product in CO2 aqueous environments, has a critical influence on corrosion kinetics. However, multi‐physicochemical processes are involved in the evolution of the FeCO3 porous layer, such as homogeneous chemical reactions, multi‐component transport, and dissolution/precipitation at the solid–fluid interface, which is notoriously complicated to be totally understood. This study builds a numerical framework based on partial‐bounceback lattice Boltzmann method to investigate the reactive transport in the evolving porous layer. Experimental observations on polarization behavior confirm the model performance. Results show that the formation of a protective FeCO3 film is self‐promoted under anodic polarization in CO2‐saturated alkaline solutions and the “self‐promoted” effect is highly associated with local water chemistry at the interface. The interfacial FeCO3 supersaturation is several orders of magnitude higher than that of the bulk, while the interfacial concentrations of CO32− and HCO3− are slightly changed from bulk. The growing porous layer hinders Fe2+ from transporting away from the interface, promotes the precipitation of FeCO3, and further facilitates a denser film to inhibit anodic processes, which is another manifestation of the self‐promoted effect.
Double regulation of conductivity by adhesive hydrogel based on catechol‐modified sodium alginate /acrylamide hydrogel with silver ions
Authors: Zhou Hairuo , Niu Xiao , Ding Xuanxuan , Yu Fei , Yang Hua 
Published: November 2023

AbstractThe purpose of this study is to explore how to control the conductivity of gel conveniently and effectively through experiments. First, a kind of acrylamide‐based composite with adhesion and conductivity adjustment was prepared by adding silver ions and silver monomers to the gel in one step. The semi interpenetrating network structure formed by the molecular chain of polyacrylamide and catechol modified sodium alginate in the composite is cross‐connected with silver ions to form a double network structure. This change of network structure not only makes the structure of gel more stable, but also brings extraordinary conductivity. Secondly, different types of conductive ions and organic solutions were added to the gel system. Electrochemical impedance spectroscopy showed that the addition of silver enhanced the conductivity of the material; When NaNO3 is used to replace water molecules in PAM, the ionic conductivity can be increased by 75.3% (from 2.44 × 10−5 to 20.8 × 10−5 mscm−1). When PDA/PAM was soaked in AgNO3, the ionic conductivity increased in the range of 10.4% ~ 674%. It provides a novel strategy for controlling the conductivity of composite materials.
Stretchable and ultra‐light non‐woven thermal material with effective photo‐thermal conversion based on solution blow spinning technology
Authors: Liu Fan , Liang Yuan , Xiang Hewei , Li Wenbo , Liang Hengtao , Shao Weili , Li Xiang , Han Pengju , He Jianxin , Yuan Zupei 
Published: November 2023

AbstractAn ideal insulation material has long been envisioned as one that not only minimizes heat loss but also provides additional heat. This study presents a non‐woven fabric, comprising ultra‐fine fibers embedded with zirconium carbide nanoparticles (ZrC NPs), prepared via solution blow spinning (SBS) and thermal crosslinking technology. Our results suggest that the fluffily‐structured elastomer, fabricated using rigid polystyrene and flexible polyurethane, exhibits high porosity (96.96%), ultra‐light characteristics (volume density of 47.12 mg cm−3), and effective heat retention (thermal conductivity of 23.1 mW mK−1 at −40°C). Moreover, the fabric demonstrates remarkable fracture strength (206.38 kPa), high elongation at break (34.5%), and superior elasticity even after 100 compression cycles at 40% strain. Despite the fact that introducing 12% ZrC increases the thermal conductivity of the base fabric by 6%, the NPs endow the material with an excellent photothermal conversion function. Following 10 min of exposure to visible light, the surface temperature increases to 71.5°C. Given its impressive performance, this novel non‐woven fabric demonstrates significant potential for applications in the field of cold protection.
Ternary system based on polyaniline, graphene, and acrylic matrix applied to thermoelectric systems
Authors: Costa Ana Clara Soares , Furtado Clascídia Aparecida , Oréfice Rodrigo Lambert 
Published: November 2023

AbstractThermoelectric (TE) materials have attracted attention for offering a green option for power generation, due to their ability to convert thermal energy into electricity. In recent years, a promising way to achieve efficiency in TE properties has been proposed based on composites of conjugated polymers, such as polyaniline (PANI), and carbon nanomaterials such as graphene (GR). Since polyaniline and GR composites are promising fillers for organic thermoelectric materials (OTE), we expanded their investigations for a ternary system (TS), providing materials with multiple functionalities, and high performance. In this research work, a TS based on an acrylic matrix (ACR), GR, and PANI was successfully prepared through the combination of in situ polymerization of aniline in contact with GR and mechanical mixture of the resulting hybrid with an ACR. Structural and morphological characterization confirmed that GR affected PANI morphology and crystallinity. The band gap determination by Tauc's relation indicated the occurrence of π‐π interaction between the chains and an increase of the electrical conductivity of the composites allowed to infer a synergistic effect. The measured Seebeck coefficient reached a maximum value of −17.02 μVK−1 and the highest power factor obtained was 4.94 μWm−1 K−2 for the ACR/PANI sample, indicating a material with promising thermoelectric properties.
Preparation of OVA‐loaded γ‐PGA/CS nanocomposite delivery vector and its immune response
Authors: Hu Shan , Liu Ruiqi , Hu Sheng , Ye Jianfeng , Chen Sheng , Ye Xiaozhou , Wang Yun 
Published: November 2023

AbstractTo improve the stability and immunization of proteins or peptides after vaccination, choosing biodegradable and biocompatible materials to encapsulate protein ovalbumin (OVA) is necessary. In this study, we aim to construct OVA‐loaded γ‐polyglutamic acid (γ‐PGA)/chitosan (CS) nanoparticles (NPs) using ionic cross‐linking and poly‐electrolyte composite methods and to explore its immune effect in mice. The as‐constructed γ‐PGA/CS/OVA NPs, with a positive charge on the surface, were uniformly round. Additionally, the particle size range of the as‐constructed γ‐PGA/CS/OVA NPs was 200–400 nm. Furthermore, the sodium dodecyl sulfate (SDS)‐PAGE analysis showed that OVA in γ‐PGA/CS/OVA NPs had high structural integrity. The conditions of preparing γ‐PGA/CS/OVA NPs were optimized in detail, and it was found that the resultant loading capacity of NPs achieved 207.7 ± 11.1 μg/mg. MTT assay showed that γ‐PGA/CS NPs have good biocompatibility. The results of immune experiments in mice showed that compared with OVA not wrapped with γ‐PGA/CS composite carrier, γ‐PGA/CS/OVA NPs can induce a stronger immune response through humoral immunity in vivo. Overall, these findings demonstrated that γ‐PGA/CS NPs can be regarded as a good protein delivery system to enhance the immune response in vivo.
A solid–solid phase change material with wide service temperature range based on polyethylene glycols with different molecular weights
Authors: Chang Jinming , Lu Huiyu , Xiao Yulong , Wu Sha , Xiao Yao , Wang Yuechuan 
Published: November 2023

AbstractThe service temperature ranges of existing polyethylene glycol (PEG)‐based solid–solid phase change materials (SSPCMs) and form‐stable PCMs (FSPCMs) are always above 0°C, which are not very suitable for the thermal energy storage and thermal management in cold area. In this study, we prepared a SSPCM based on the PEGs with different molecular weights. PEG‐200, PEG‐400, PEG‐600, and PEG‐1000 were reacted with isophorone diisocyanate forming a polyurethane with physical crosslinking structure. Meanwhile, PEG‐4000 and PEG‐20000 were physically blended with the polymer obtaining the SSPCM. PEG‐200, PEG‐400, PEG‐600, and PEG‐1000 were employed together to prepare PEG‐based PCMs for the first time. The physical crosslinking structure of the polymer restricts the movement of the PEG segments at high temperature, showing solid–solid phase transition, avoiding the leakage of the material. This SSPCM has a service temperature range between −27.4 and 73.2°C, which is wider than those of the existing PEG‐based SSPCMs and FSPCMs, showing outstanding ability for thermal energy storage and thermal management under different climate conditions.
In‐situ generated ZnO nanoparticles for enhanced performance of thin film nanocomposite membrane in forward osmosis process
Authors: Hakimi Ghazal , Shakeri Alireza , Salehi Hasan 
Published: November 2023

AbstractThis work developed a novel approach to the in‐situ synthesis of ZnO nanoparticles to modify the polysulfone (PSf) porous membrane substrate. The zinc acetate was added to the casting solution, and ZnO nanoparticles were synthesized during phase inversion. The non‐solvent pH and zinc acetate concentration controlled the ZnO synthesis and loading. Their effect on the substrates properties in terms of morphology, hydrophilicity and porosity was studied thoroughly. The result shows that the ZnO nanoparticles was not formed in acidic pH, while ZnO nanoparticles with size of 20 nm could be easily formed in basic pH. The successful synthesis of ZnO nanoparticles was investigated using FTIR and EDX analysis. The EDX images verify that in‐situ synthesis led to a more uniform dispersion than conventional incorporation method. Then the effect of ZnO loading on the interfacial reaction and polyamide (PA) structure was investigated. SEM images verify the successful synthesis of a uniform and defect‐free PA thin film on ZnO modified substrates. FO performance results show an enhancement in water flux and salt rejection as a result of ZnO incorporation in thin film nanocomposite (TFN) membranes, where TFN 1 wt.% in‐situ membrane showed 40% higher water flux than the control TFC membrane. The porous and hydrophile substrate in TFN 1 wt.% in‐situ membrane is responsible for improved separation performance. These modified membranes displayed uniform dispersion of ZnO nanoparticles within substrates, confirming that this method could effectively restrain the aggregation of the nanoparticles.
A novel alkylpolyglucoside‐modified montmorillonite‐filled starch bionanocomposites produced by extrusion
Authors: Alves Jefferson Lopes , Tadini Carmen Cecilia 
Published: November 2023

AbstractNative cassava starch was modified by dry heating treatment, and sodic montmorillonite was modified using an alkylpolyglucoside biosurfactant to produce a novel montmorillonite‐filled starch bionanocomposites with improved performance. The bionanocomposites were produced in two extrusion steps using a co‐rotating twin‐screw extruder. The structural properties of the bionanocomposites were studied by X‐ray diffraction. The reinforcement effect and material performance were evaluated by hydrophobicity, solubility, opacity, barrier, thermal and mechanical properties. In general, the dispersion of the nanofillers resulted in bionanocomposites with intercalated structures and improved properties compared with unfilled bioplastics. The main results exhibited that modified montmorillonite showed better compatibility with starch, improving nanofiller dispersion and interaction than the native one. As a result, it increased the hydrophobicity and reduced solubility, water, and oxygen permeabilities in comparison with bionanocomposites based on native starch by 36%, 48%, and 68%, respectively. Also, the tensile strength and Young modulus increased from 0.60 to 2.56 MPa and from 2.99 to 15.68 MPa, respectively. In conclusion, modification of MMT by the biosurfactant is a good approach to enhance dispersion/interaction with the starch matrix.
Anisotropy unveiled ∆g spin‐mixing for magnetotransport in conducting polymers
Authors: Guo Zean , Wang Jiawei , Shan Yu , Hu Ke , Lu Nianduan , Li Mengmeng , Bi Chong , Li Ling 
Published: November 2023

AbstractUnderstanding magnetotransport properties in semiconductors plays a vital role in either developing future spintronic or unveiling the underpinning physics of electronic dynamics. In recent years, the high‐field magnetoconductance (HFM, B ~ 1 T) in polymers has drawn intense discussions and always been attributed to thermal spin polarization (TSP). In this work, the HFMs in several benchmark polymers are proposed to be correlated to the ∆g spin‐mixing effect, determined from their remarkable anisotropy in response to magnetic fields, which cannot be explained only by TSP. It is the fundamental difference between two spins' Lande factors stemming from the random orientations of molecular backbones that contributes to the intense ∆g spin‐mixing effect, leading to HFMs' anisotropy as high as 150%. It is further found that the ∆g spin‐mixing mechanism greatly correlates with the charge transport dynamics in polymers, in which a slow‐ to fast‐hopping crossover was observed and further verified by pressure‐dependent HFMs characteristics.
Stimuli‐responsive colorimetric polydiacetylene sensor in polar organic solvent
Authors: Ma Chaoqun , Hu Li , Jiang Li , Huang Wenyan , Yang Hongjun , Jiang Qimin , Jiang Bibiao 
Published: November 2023

AbstractPolydiacetylene (PDA) has been actively employed as sensing vehicles owing to its unique colorimetric feature upon environmental stimulation. Here, blue phase PDA has been constructed by topological polymerization of commercial diacetylene acid (DA) noncovalently modified by guest amines. Specifically, PDA including 1‐naphthylmethylamine noncovalently bonded on both sides exhibits long‐term stability in polar organic solvents. The stability of PDA depended upon both the structures of the DA and the guest molecule, underscoring a stabilizing mechanism dominated by noncovalent bonding and strong π–π interaction. Accordingly, the blue phase PDA shows a colorimetric response from blue to red upon exposure to stimuli influencing noncovalent bonding and π–π interaction, such as elevated temperature, the existence of acid or alkali at concentrations as low as 50 ppm. Therefore, the PDA developed in this study has the potential of serving as a colorimetric sensor for detecting subtle environment changes and especially for measuring the quality of polar organic solvents recovered from industrial effluent.
Cloning of suppressor of cytokine signaling 7 from silkworm (Bombyx mori) and its response to the infection of Bombyx mori nucleopolyhedrovirus
Authors: Wang Qian , Cui Miao , Zhang Cong , Xia Anqi , Wang Qiang , Liu Xiaoyong , Chen Keping , Xia Hengchuan 
Published: November 2023

AbstractSuppressors of cytokine signaling (SOCS) play important roles in the regulation of growth, development, and immunity of eukaryotic organisms. SOCS7 is an important member of the SOCS family, but its physiological and pathological functions remain largely unknown in invertebrates including insects. Here, we first report the cloning of a SOCS7 gene from a domesticated silkworm (Bombyx mori), named BmSOCS7. We have characterized BmSOCS7 expression profiles in silkworm varieties susceptible or resistant to the infection of Bombyx mori nucleopolyhedrovirus (BmNPV) using the real‐time fluorescence quantitative PCR. BmSOCS7 expresses highly in embryogenesis and lowly in metamorphosis in resistant silkworms but does in opposite contrast in susceptible silkworms. Its expression is at very low level in the fat body of resistant silkworms but is relatively high in the fat body of susceptible ones. BmNPV inoculation induces a transient downregulation and then a general upregulation of BmSOCS7 expression in BmN cells, while it induces a general downregulation in silkworm midgut, fat body and hemolymph with more pronounced effect in resistant silkworms than susceptible ones and more prominent in the fat body and hemolymph than the midgut. Together, our work reveals that downregulation of BmSOCS7 expression may be an important strategy for silkworm anti‐BmNPV immune response, and BmSOCS7 may mainly function in the fat body and hemolymph rather than the midgut to participate in BmNPV infection process.