bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dissolution‐Recrystallization: A Novel Mechanism for Fluorochromic Detection of Th4+ Using Color‐Tunable Luminescent Metal–Organic Frameworks
Authors: Cui Yunyi , Lu Huangjie , Hou Huiliang , Bai Yaoyao , Yang Junpu , Li Yarui , Qiu Jie , Wang Shuao , Lin Jian 
Published: July 2024

AbstractThorium, a predominant actinide in the Earth's crust, presents significant environmental and health risks due to its radioactive nature. These risks are particularly pronounced during the mining and processing of monazite for rare earth elements (REEs), which contain substantial thorium concentrations. Current instrumental analysis methods for thorium, offer high accuracy but require laborious sample preparations and expensive instruments, making them unsuitable for on‐site analysis. Herein, we present a class of color‐tunable luminescent lanthanide‐based metal–organic frameworks (Ln‐MOFs) as fluorochromic sensors for Th4+ cations. Utilizing a heterobimetallic Eu3+/Tb3+ doping strategy, the luminescence colors of EuxTb1‐x‐BDC‐OH can be finely tuned from red, to orange, and to green. More intriguingly, the higher Lewis acidity of Th4+ facilitates the transformation of EuxTb1‐x‐BDC‐OH into a UiO‐type Th‐MOF via a dissolution‐recrystallization mechanism. This process results in a gradual reduction of characteristic Ln3+ emissions and the emergence of blue color ligand‐based fluorescence, thereby leading to selective fluorochromic responses with increasing Th4+ concentrations and enabling visible detection of Th4+ cations. Additionally, a custom‐built portable optoelectronic device is fabricated, which directly converts luminescence colors into red‐green‐blue (RGB) values. This device enables easy quantification of Th4+ concentrations without the need for complex instrumentation.
Extremely Active and Robust Ir−Mn Dual‐Atom Electrocatalyst for Oxygen Evolution Reaction by Oxygen‐Oxygen Radical Coupling Mechanism
Authors: Liu Wenbo , Long Guifa , Xiang Zhipeng , Ren Tianlu , Piao Jinhua , Wan Kai , Fu Zhiyong , Liang Zhenxing 
Published: July 2024

AbstractA novel Ir−Mn dual‐atom electrocatalyst is synthesized by a facile ion‐exchange method by incorporating Ir in SrMnO3, which yields an extremely high activity and stability for the oxygen evolution reaction (OER). The ion exchange process occurs in a self‐limitation way, which favors the formation of Ir−Mn dual‐atom in the IrMnO9 unit. The incorporation of Ir modulates the electronic structure of both Ir and Mn, thereby resulting in a shorter distance of the Ir−Mn dual‐atom (2.41 Å) than the Mn−Mn dual‐atom (2.49 Å). The modulated Ir−Mn dual‐atom enables the same spin direction O (↑) of the adsorbed *O intermediates, thus facilitating the direct coupling of the two adsorbed *O intermediates to release O2 via the oxygen‐oxygen radical coupling mechanism. Electrochemical tests reveal that the Ir‐SrMnO3 exhibits a superior OER's activity with a low overpotential of 207 mV at 10 mA cm−2 and achieves a mass specific activity of 1100 A gIr−1 at 1.5 V. The proton‐exchange‐membrane water electrolyzer with the Ir‐SrMnO3 catalyst exhibits a low electrolysis voltage of 1.63 V at 1.0 A cm−2 and a stable 2000‐h operation with a decay of only 15 μV h−1 at 0.5 A cm−2.
DNA Tetrahedra as Functional Nanostructures: From Basic Principles to Applications
Authors: Ouyang Yu , Zhang Pu , Willner Itamar 
Published: July 2024

AbstractSelf‐assembled supramolecular DNA tetrahedra composed of programmed sequence‐engineered complementary base‐paired strands represent elusive nanostructures having key contributions to the development and diverse applications of DNA nanotechnology. By appropriate engineering of the strands, DNA tetrahedra of tuneable sizes and chemical functionalities were designed. Programmed functionalities for diverse applications were integrated into tetrahedra structures including sequence‐specific recognition strands (aptamers), catalytic DNAzymes, nanoparticles, proteins, or fluorophore. The article presents a comprehensive review addressing methods to assemble and characterize the DNA tetrahedra nanostructures, and diverse applications of DNA tetrahedra framework are discussed. Topics being addressed include the application of structurally functionalized DNA tetrahedra nanostructure for the assembly of diverse optical or electrochemical sensing platforms and functionalized intracellular sensing and imaging modules. In addition, the triggered reconfiguration of DNA tetrahedra nanostructures and dynamic networks and circuits emulating biological transformations are introduced. Moreover, the functionalization of DNA tetrahedra frameworks with nanoparticles provides building units for the assembly of optical devices and for the programmed crystallization of nanoparticle superlattices. Finally, diverse applications of DNA tetrahedra in the field of nanomedicine are addressed. These include the DNA tetrahedra‐assisted permeation of nanocarriers into cells for imaging, controlled drug release, active chemodynamic/photodynamic treatment of target tissues, and regenerative medicine.
MXene Supported Electrodeposition Engineering of Layer Double Hydroxide for Alkaline Zinc Batteries
Authors: Chen Ze , Zhu Jiaxiong , Yang Shuo , Wei Zhiquan , Wang Yiqiao , Chen Ao , Huang Zhaodong , Zhi Chunyi 
Published: July 2024

AbstractThe main challenges faced by aqueous rechargeable nickel‐zinc batteries are their comparatively low energy density and poor cycling stability, mainly due to the limited capacity and reversibility of existing Ni‐based cathodes. Moreover, the preparation procedures of these cathodes are complex and not easily scalable, which makes them less promising for large‐scale energy storage. Herein, we utilized MXene as a functional additive to effectively improve the electrodeposition preparation of NiCo layered double hydroxides (LDH). Benefiting from the improved interfacial contact between nickel foam (NF) and platting solution and the enhanced ionic conductivity of platting product based on MXene additives, the resulting binder‐free NiCo LDH electrode can achieve ultrahigh areal loading (~65 mg cm−2) with abundant active surface for redox reactions and maintained short transport pathway for ion diffusion and charge transfer. Furthermore, the as‐fabricated alkaline NiCo LDH‐based battery delivers high discharge capacity, up to 20.2 mAh cm−2 (311 mAh g−1), accompanied by remarkable rate performance (9.6 mAh cm−2 or 148 mAh g−1 at 120 mA cm−2). Due to the high structural and chemical stability of MXenes/LDH‐based electrode, excellent cycling life can also be achieved with 88.6 % capacity retention after 10000 cycles. In addition, ultrahigh areal energy density (31.2 mWh cm−2) and gravimetric energy density (465 Wh kg−1) can be simultaneously achieved. This work has inspired the design of advanced cathode materials to develop high‐performance aqueous zinc batteries.
Transforming Zinc‐Ion Batteries with DTPA‐Na: A Synergistic SEI and CEI Engineering Approach for Exceptional Cycling Stability and Self‐Discharge Inhibition
Authors: Huang Yongfeng , Yan Hao , Liu Wenbao , Kang Feiyu 
Published: July 2024

AbstractAqueous zinc‐ion batteries (ZIBs) hold immense potential for large‐scale energy storage, but their practical implementation faces significant challenges related to the zinc anode, including dendrite formation, corrosion, and hydrogen evolution. This study addresses these challenges by introducing diethylenetriamine pentaacetate sodium salt (DTPA‐Na) as a novel electrolyte additive. DTPA‐Na exhibits a unique dual functionality, enabling the formation of a robust, multi‐layered solid electrolyte interphase (SEI) on the zinc anode and a stable cathode electrolyte interphase (CEI) on the MnOOH cathode. The engineered SEI effectively suppresses interfacial side reactions, facilitates uniform zinc deposition, and mitigates dendrite growth, while the CEI inhibits MnOOH dissolution and detrimental cathode side reactions. This synergistic SEI/CEI engineering approach significantly enhances ZIB performance, achieving remarkable cycling stability and self‐discharge inhibition, as evidenced by the extended lifespan of Zn||Zn symmetrical cells (4400 hours at 0.5 mA/cm2) and the exceptional capacity retention of Zn||MnOOH full cells after prolonged rest (98.61 % after 720 hours).
Self‐Assembly of an Unlikely Occurring Quadrangular Tube by Modulating Intramolecular Forces
Authors: Ge Chenqi , Cao Ze , Feng Tinglong , Wu Yating , Xiao Mingrui , Tang Hua , Wang Kun , Wang Linjun , Li Hao 
Published: July 2024

AbstractOne of the central focuses in self‐assembly is precisely controlling the self‐assembly pathway so that the target molecules can be produced exclusively. Trans‐1,2‐cyclohexanediamine contains two amino units that form a 60° angle when projected on a plane. This angle naturally favors the formation of triangular products in most cases when trans‐1,2‐cyclohexanediamine is used as a bisamino building block in the synthesis of macrocycles and tubes. Here, we synthesized a slightly bent tetraformyl precursor bearing a central dibenzothiophene moiety, whose 3,7‐positions are functionalized with two m‐phthalaldehyde units. We observed that combining this tetraformyl building block with trans‐1,2‐cyclohexanediamine yielded a quadrangular tube when the concentrations of the precursors were relatively high. Both experimental measurements and theoretical calculations indicate that the formation of this unlikely occurring quadrangular product was driven by the intramolecular C−H⋅⋅⋅π interactions between the dibenzothiophene building blocks within the tube framework. This driving force, however, was disturbed in the triangular tube, a smaller counterpart whose formation was considered previously much more thermodynamically favored. These results improved our fundamental understanding on how to create those products whose syntheses are considered difficult or impossible, by modulating the intramolecular driving forces.
Ultraviolet Nonlinear Optical Single Crystals of A Three‐Dimensional Chiral Covalent Framework Containing Te−O−B−O Bonds
Authors: Xue Miaomiao , Zhang Lei , Meng Xin , Yang Jinglun , He Yanping , Lee Chun‐Sing , Zhang Jian , Zhang Qichun 
Published: July 2024

AbstractExtending covalent organic frameworks (COFs) into crystalline carbon‐free covalent backbones is an important strategy to endow these materials with more exotic functions. Integrating metal‐free inorganic and organic components into one covalent framework is an effective way to address the issue of poor thermal/solvent stability in the field of nonlinear optics (NLO). However, constructing such structures is very challenging. Here, we linked 3‐connected nods (BO3) and 2‐connected organic building blocks (Te(Ph)2) together to produce colorless single crystals (size up to 400 μm) of a three‐dimensional (3D) chiral covalent framework (CityU‐22). The single‐crystal X‐ray diffraction (SCXRD) analysis reveals that CityU‐22 has a non‐carbon Te−O−B−O bond‐based network with the srs topology. The chiral CityU‐22 displays good stability under the treatment of different common solvents or heat (the decomposition temperature above 300 °C). Due to its non‐π‐conjugated backbone (−Te−O−B−O−), CityU‐22 shows an ultraviolet NLO behavior with a second‐harmonic generation (SHG) response similar to KH2PO4 (KDP).
Numerical simulation on the pressure, turbulence, and λ2 vortex characteristics within the annular symmetric jet process under different vacuum degrees
Authors: Chai Xinjie , Hu Yuxi , Gao Lishan , Qiu Facheng , Cheng Zhiliang 
Published: July 2024

AbstractThe jet impingement flash technology represents a paramount research subject in the domain of heat and mass transfer. To augment its commercial potential, the conjunction of annular multi‐aperture jet impingement with negative pressure flash evaporation is introduced in this study. The employment of an annular nozzle array is integral to the enhancement of the heat and mass transfer efficiency between the phases. The Realizable k‐ε model is used in this study. The negative pressure flash vaporization model was also developed by introducing a mass source term and an energy source term based on the Mixture model. The flow characteristics are characterized using numerical simulation. Additionally, the λ2 vortex identification criterion is investigated the vortex structure. The simulation results exhibit good agreement with experimental findings, demonstrating that a higher initial vacuum leads to a stronger flashing effect and a more chaotic movement of the flow group within the flow field. Thus, this study provides a reference method for the structural design and optimization of annular symmetric jet impingement negative pressure deammonia chemical equipment for engineering applications.
Ferulic acid and human platelet lysate incorporated alginate dialdehyde‐gelatin 3D (bio)printable hydrogels with biological activity
Authors: Bider Faina , Klotschan Artem , Kuth Sonja , Weisbach Volker , Boccaccini Aldo R. 
Published: July 2024

AbstractThis study investigates the creation of multifunctional scaffolds based on alginate dialdehyde (ADA) and gelatin (GEL) incorporating ferulic acid (FA), a phytotherapeutic agent with diverse pharmacological properties, and human platelet lysate (HPL). The multimaterial hydrogels were characterized in terms of degradation/swelling behavior showing that HPL decelerates the degradation process of ADA‐GEL hydrogels in absence of FA. A FA release study confirmed that the presence of HPL does not affect the FA release ability of ADA‐GEL hydrogel. A trinitrobenzenesulfonic acid (TNBS) assay confirmed no influence of HPL on the Schiff's base formation. The addition of HPL was shown to lead to a decrease in stiffness, mechanical stability, and viscosity of ADA‐GEL‐HPL inks. This effect was also observed for ADA‐GEL‐HPL inks when investigating their three‐dimensional (3D) printing ability. Cytocompatibility tests and a 3D bioprinting study confirmed the beneficial impact of the addition of HPL on MC3T3‐E1 cells. Moreover, an antibacterial effect provided by the addition of FA was confirmed while the incorporation of HPL led to higher VEGF‐A expression by MC3T3‐E1 cells. Overall, the addition of HPL and FA to ADA‐GEL hydrogel results in a promising ink, which has potential for future biofabrication applications.
Incorporation of polydopamine functionalized as double‐sided adhesive to connect phosphotungstic acid in Friedel‐Crafts cross‐linked SPEEK sulfonated poly(ether eether ketone) as proton exchange membranes
Authors: Yao Zi‐Ying , Ayaz Sher , Yin Xin‐Miao , Yu Hai‐Yin 
Published: July 2024

AbstractUsing highly sulfonated poly(ether ether ketone) (SPEEK) as the base material, the structure and properties of poly(ether ether ketone) (PEEK) membranes are optimized by precisely controlling the doping of phosphotungstic acid (HPW), dopamine (DA), and various amounts of carbon nanomaterials. Compared with conventional PEEK membranes, this optimized membrane exhibits higher proton conductivity, lower water absorption swelling rate, and excellent thermal stability. Highly SPEEK is soluble in water, thus fails to be used in fuel cell applications. Herein, we conduct Friedel‐Crafts method to obtain cross‐linked highly sulfonated membrane with controlled water uptake and swelling while still maintaining high proton conductivity. The polymer is then doped with phosphotungstic acid (HPW) to acquire enhanced performance. To control HPW leakage, polydopamine (PDA) acting as double‐sided adhesive is incorporated within the membrane. By distributing 1 wt.% PDA, the HPW leakage is reduced almost three times. The composite C‐SPEEK/HPWx/PDAy membranes have exhibited excellent overall performance. Specifically, the best proton conductivity result of C‐SPEEK/HPW50 has reached 0.271 S/cm. Moreover, it has presented superb performance in H2/O2 single cell test recorded as power density of 886.13 mW/cm2 while current density is 1614.20 mA/cm2 at 60°C.
Epoxy‐based coatings containing bentonite and ZnO obtained by modified solution blow spinning
Authors: Zárate Raquel P. L. , Veras Tiago N. , Nascimento Jordan M. , Santos Ieda M. G. , Medeiros Eliton S. 
Published: July 2024

AbstractActive coatings have been extensively studied due to their ability to contain active substances that can promote ab/adsorption and/or catalysis of compounds of interest. In this work, solution blow spraying (SBSp), which is a modification of the solution blow spinning (SBS), was used to produce active coatings via a multistep process: The first stage consisted in applying a cross‐linkable polymer layer (epoxy) to a metallic substrate, followed by heating at 50°C to promote partial cross‐linking; in the second step, particle suspensions containing zinc oxide (ZnO) and/or bentonite/ZnO were sprayed over the resin layer so that particles adhered to the surface rather than embedded in, what would reduce surface activity. Primarily, rheology of the suspensions and resin cure were characterized by rheometry and differential scanning calorimetry (DSC), respectively. Infrared spectroscopy and scanning electron microscopy of the ZnO synthesized by the Pechini method was performed. Coatings were analyzed by optical microscopy (OM), scanning electron microscopy (SEM), and x‐ray diffraction (XRD). Based on the suspension studies, the optimized particle concentration was found to be 10 wt% in water. Thermal analysis of resin showed the ideal time and temperature of 16 min or 33 min at 50°C. Using these variables, active coatings with ZnO and bentonite/ZnO particles exposed to the surface were successful produced by SBSp.
Novel 1,2,4‐triazole derivatives containing the naphthalene moiety as selective butyrylcholinesterase inhibitors: Design, synthesis, and biological evaluation
Authors: Koçak Aslan Ebru , Sezer Aysima , Tüylü Küçükkılınç Tuba , Palaska Erhan 
Published: July 2024

AbstractButyrylcholinesterase (BChE) is considered a promising therapeutic target for treating Alzheimer's disease due to the increase in the levels and activity of BChE in the late stage of the disease. In this study, a series of novel 1,2,4‐triazole derivatives bearing the naphthalene moiety linked to the benzothiazole, thiazole, and phenyl scaffolds via amid chain were designed and synthesized as potential and selective BChE inhibitors. The results of the inhibitory activity studies revealed that most of these compounds exhibited significant inhibitor potency on BChE. Compounds 35a (0.025 ± 0.01 μM) and 37a (0.035 ± 0.01 μM) displayed the most potent inhibitory activity, with excellent selectivity against BChE over acetylcholinesterase (SIBChE, 23,686 and 16,936, respectively) among the target compounds. The kinetics studies revealed that these compounds behaved with noncompetitive BChE inhibitors. Molecular docking studies indicated that 35a and 37a fit well into the active side of BChE. In addition, 35a and 37a also had the lowest cytotoxicity for human neuroblastoma cells (SH‐SY5Y), potential antioxidant capacity, moderate inhibition potency on amyloid‐β1‐42 aggregation, and significant neuroprotective effect against SH‐SY5Y cell injury induced by H2O2 and amyloid‐β1‐42. All results suggest that these compounds might be considered as promising new lead compounds in the drug discovery process for the treatment of late‐stage Alzheimer's disease.
Effect of the Imidazole π‐Extension on TADF Emitters in Electrochemiluminescence
Authors: Pelorosso Elisa , Pavan Giulio , Scattolin Thomas , Orian Laura , Antonello Sabrina , Demitri Nicola , Aliprandi Alessandro 
Published: July 2024

AbstractAlready known molecules which exhibit good electrochemiluminescence (ECL) efficiencies and high photoluminescence quantum yields (PLQY) have been structurally modified in order to increase their performance. The followed strategy is to stiffen the structures to limit the rotational and vibrational freedom degrees and favour radiative decay processes once excited. Molecules under investigation consist of donor‐acceptor systems in which the acceptor fraction is a benzonitrile with an imidazole in para position, while the donor fraction consists of four diphenylamine (NPh2) or 3,6‐di(tert‐butyl)‐9H‐carbazole (t‐BuCz) groups in the remaining positions on the central benzene ring. Therefore, in order to stiffen these systems and restrict the intramolecular rotations (RIR), the imidazole in the para position has been replaced with more extended π‐systems, i. e., benzimidazole and phenanthro[9,10‐d]imidazole. The restriction of the intramolecular rotation can be clearly observed by 1H NMR analysis. We expected to observe an increase in ECL efficiency and PLQY with the rigidity. Surprisingly, we observed a generally opposite trend: molecules with the smallest imidazole fraction showed the best performance in ECL and higher PLQY. Notably, NPh2 derivatives with benzimidazole and phenanthro[9,10‐d]imidazole showed an hypsochromic shift of the emission spectra with concomitant increase of the PLQY as the solvent polarity increases.
A primer for junior trainees: Recognition of RNA modifications by RNA‐binding proteins
Authors: Angelo Murphy , Bhargava Yash , Aoki Scott Takeo 
Published: July 2024

AbstractThe complexity of RNA cannot be fully expressed with the canonical A, C, G, and U alphabet. To date, over 170 distinct chemical modifications to RNA have been discovered in living systems. RNA modifications can profoundly impact the cellular outcomes of messenger RNAs (mRNAs), transfer and ribosomal RNAs, and noncoding RNAs. Additionally, aberrant RNA modifications are associated with human disease. RNA modifications are a rising topic within the fields of biochemistry and molecular biology. The role of RNA modifications in gene regulation, disease pathogenesis, and therapeutic applications increasingly captures the attention of the scientific community. This review aims to provide undergraduates, junior trainees, and educators with an appreciation for the significance of RNA modifications in eukaryotic organisms, alongside the skills required to identify and analyze fundamental RNA–protein interactions. The pumilio RNA‐binding protein and YT521‐B homology (YTH) family of modified RNA‐binding proteins serve as examples to highlight the fundamental biochemical interactions that underlie the specific recognition of both unmodified and modified ribonucleotides, respectively. By instilling these foundational, textbook concepts through practical examples, this review contributes an analytical toolkit that facilitates engagement with RNA modifications research at large.