bluuebunny/crossref_metadata_2025_split huggingface dataset:
Inorganic Building Unit Isomerization Engineering for Multicolor Room Temperature Phosphorescence
Authors: Song Wen‐Tao , Zhang Bo‐Lun , Miao Lei , Chen Jun , Zhang Pei‐Pei , Wang Rui‐Hong , Shi Wen‐Jing , Ni Jun , Zhang Jian‐Jun 
Published: December 2024

AbstractRoom temperature phosphorescence (RTP) materials have gained significant attention in current research. However, facile regulation of RTP color remains a great challenge. Here an “inorganic building unit (IBU) isomerization engineering” strategy is proposed to facilely regulate RTP color. Four coordination polymers (CPs) with different packing structures from the same raw material are prepared. Among them, 1 has a 2D layered structure, while 2, 3, and 4 can be viewed as 3D framework isomers, which display a wide‐range of RTP colors (505‐612 nm) ranging from cyan to red, and the optimal RTP excitation wavelengths for 3 and 4 are both located within the visible light region. Detailed investigation reveals that the IBU isomerization effectively regulates the interaction between organic linkers, leading to different charge transfer (CT) processes and inducing various RTP emission. Additionally, color‐tunable doped RTP materials with calcium formate as matrix and in‐situ formed 4 as guest components are prepared, exhibiting interesting excitation/ concentration/ time‐dependent RTP emission. Finally, the potential application of the materials in multi‐level information encryption is demonstrated. This study not only proposes an effective method for regulating RTP color, but also highlights the great potential of CP‐type guest components in preparing doped RTP materials.
High‐Resolution Self‐Assembly of Functional Materials and Microscale Devices via Selective Plasma Induced Surface Energy Programming
Authors: Tinsley Luke J. , Karipoth Prakash , Chandler James H. , Taccola Silvia , Valdastri Pietro , Harris Russell A. 
Published: December 2024

AbstractCurrent technologies preclude effective and efficient self‐assembly of heterogeneous arrangements of functional materials between 10−1 and 10−5 m. Consequently, their fabrication is dominated by methods of direct material manipulation, which struggle to meet the designers’ demands regarding resolution, material freedom, production time, and cost. A two‐step, computer‐controlled is presented, multi‐material self‐assembly technique that allows heterogenous patterns of several centimeters with features down to 12.5 µm in size. First, a micro plasma jet selectively programs the surface energy of a polydimethylsiloxane substrate through localized chemical functionalization. Second, polar fluids containing functional materials are simplistically introduced which then self‐assemble according to the patterned regions of high surface energy over timescales of the order of seconds. In‐process control enables both high‐resolution patterning and high throughput. This approach is demonstrated to produce heterogenous patterns of materials with varying conductive, magnetic, and mechanical properties. These include magneto‐mechanical films and flexible electronic devices with unprecedented processing times and economy for high‐resolution patterns. This self‐assembly approach can disrupt the current lithography/direct write paradigm that dominates micro/meso‐fabrication, enabling the next generation of devices across a broad range of fields via a flexible, industrially scalable, and environmentally friendly manufacturing route.
Ti3C2Tx MXene Functionalized via Boron Doped MoS2 Quantum Dots: A Synergy of Heterojunctions and Doping Effect Enabling Ultrasensitive SO2 Detection at Room Temperature
Authors: Pal Ayan , Sharma Deepak , Tripathi Pragyan , Khandelwal Upanya , Singh Abhishek K. , Bhat Navakanta 
Published: December 2024

AbstractThe design of mixed‐dimensional heterostructures has emerged to be a new frontier of research as it induces exciting physical/chemical properties that extend beyond the fundamental properties of single dimensional systems. Therefore, rational design of heterostructured materials with novel surface chemistry and tailored interfacial properties appears to be very promising for the devices such as the gas sensors. Here, a highly sensitive gas sensor device is constructed by employing heterostructures of boron doped molybdenum disulfide quantum dots (B‐MoS2 Qdots) assembled into the matrix of Ti3C2Tx MXene. Functionalization of MXene surface with B‐MoS2 Qdots as a result of strong electrostatic attraction leads to improved charge migration behavior, active site exposure and abundant specific surface area. As a result, the Ti3C2Tx/B‐MoS2 sensor device shows ultra‐high response (28,998.3% @ 3 ppm), ultra‐fast response rate (23.1% s−1), sub‐ppm (10 ppb lowest) detection of sulfur dioxide (SO2) gas and excellent reversibility at room temperature. Density functional theory‐based calculations indicate that enhanced SO2 sensing performance results from synergy of the 2D‐0D heterostructure formation and preferential adsorption of SO2, induced by doped boron (B) heteroatoms in Qdots. Finally, a portable and wireless SO2 monitoring system is demonstrated for real‐time detection of SO2 leakage and quantification under certain circumstances.
Reconstructed Hydroxyl Coordination Field Enhances Mass Transfer for Efficient Electrocatalytic Water Oxidation
Authors: Jiang Haomin , Dong Haohai , Liu Yicheng , Wan Qiuhong , Pan Feng , Zhang Shuting , Yang Zhuojin , Chen Yingzhi , Chen Le , Zheng Xiaofang , Luo Lanke , Su Peiyuan , Wu Jie , Sun Zemin , Lin Liu 
Published: December 2024

AbstractMass transfer factor plays an indispensable role in high current density to accelerate the oxygen evolution reaction (OER) process, yet research on modulating reactant mass transport remains limited. Herein, by leveraging the dual acid‐base properties of aluminum sites, both the activation of the electronic activity of the layer for layered double hydroxides (LDH) and construction of the interlayer hydroxide coordination field (IHCF) have been achieved through in situ electrochemical reconstruction. It not only facilitates charge transfer and the surface catalytic transformation of reaction intermediates but, most notably, the presence of the IHCF significantly enhances the mass transport of reactants. As a result, the overpotential of LDHs with IHCF is only 164 mV, significantly better than the reported Ni‐based catalysts. Deuterium kinetic isotope effect experiments and pH‐dependence measurements demonstrate that the IHCF effectively enhances substrate mass transport capability and structural stability, thereby accelerating the proton‐coupled electron transfer process. To further validate the high mass transport characteristics, stability tests of the alkaline flow electrolyzer show that catalysts maintain over 1000 h of stability at a high current density. This work suggests that the IHCF effect can be utilized for further design and synthesis of efficient water oxidation catalysts for practical application.
Sub‐Nanoscale Caffeic Acid‐Functionalized TiO2 Composite: Enhancing Mechanical Properties and Odontogenic Differentiation Capacity of Resin‐Based Dental Restoration
Authors: Cui Aixin , Ouyang Zhangyi , Xu Changzhen , Wang Chunyao , Rana Zohaib , Liu Rui , Hou Dandan , Wang Lijun , Li Hongbo , Xiang Guolei , Xu Rongchen 
Published: December 2024

AbstractResin‐based materials (RBMs) are widely applied in dentistry because they withstand the recurrent multi‐dimensional force striking and the hydrolysis of teeth. Sub‐nanoscale materials can enhance the mechanical strength and bioactivity of RBMs, but the effects are still limited and the mechanisms to enhance bioactivity remain unclear. Here, a TiO2‐based sub‐nanocomposite modified with caffeic acid (CA) to enhance mechanical robustness, structural stability, and bioactivity of RBMs is reported. This sub‐nanocomposite can promote the proliferation, adhesion, and odontogenic differentiation of human dental pulp stem cells (hDPSCs) through specifically up‐regulating the expression of genes related to cell‐matrix adhesion, integrin‐mediated signaling pathways, and collagen fibril organization. These effects lead to a better capacity for up‐regulating odontogenic differentiation of RBMs.
Deciphering the Basis of Enhanced Na+ Storage Induced by Halogen Doping in Na2VTi(PO4)3
Authors: Shao Jia Cheng , Meng Qing Yu , Chi Hong Zhong , Zhang Wen , Qin Haiying 
Published: December 2024

AbstractElemental doping is a widely adopted strategy to enhance the electrochemical performance of electrode materials, yet limited studies have explored the resulting variations in the bonding environments and the interactions between dopant atoms and their neighboring atoms. In this study, halogen‐doped (fluorine, chlorine, and bromine) polyanionic phosphates are synthesized to investigate the effects of halogen doping on the fine crystal structure, chemical micro‐environment, and electronic structure of Na2VTi(PO4)3 for Na ion storage. Density functional theory analysis reveals that halogen doping strengthens interactions at the Na sites while disrupting their symmetry, thereby promoting Na+ conductivity. Simultaneously, the increased electron density and expanded electron cloud potentially bridge the electron clouds previously isolated by [PO4] tetrahedra, facilitating electron transport. As a result, the doped samples demonstrate improved performance in rate capability, capacity, and cycling stability. This study provides deeper insights into the influence of elemental doping on electrode materials properties.
Investigation of Solid Electrolyte Interphase Regarding Extra Capacity in Fe‐Fe3C as a Superior Sodium‐Ion Anode Material
Authors: Maulana Achmad Yanuar , Kim Jongsik 
Published: December 2024

AbstractSodium‐ion batteries (SIBs) offer promising advantages over lithium‐ion batteries (LIBs) due to sodium's abundance and lower cost. However, challenges like thick solid electrolyte interphase (SEI) layers and the larger radius of sodium (1.02 Å vs. 0.76 Å for lithium) make graphite, the most common LIB anode, unsuitable for SIBs. To realize the maximum potential of carbon anode for SIBs, one of the main strategies is to fabricate carbon materials with tailored microstructures and to enhance redox reactivity by incorporating catalytic metals. In this work, the Fe‐Fe3C nanoparticles embedded in worm‐like graphitic carbon (Fe‐Fe3C@GC) were synthesized by a simple chemical vapor deposition. This hybrid structure promotes the catalytic activity to achieve additional capacities through the reversible SEI layer formation, in detail, by the reversible interconversion of ester and ether derivatives as well as conductivity enhancement. Furthermore, in situ formed Fe2O3 from Fe(0) contributed extra capacity. The Fe‐Fe3C@GC showed a large reversible discharge capacity of 376.2 mAh g−1 with a fading rate of 0.013% per cycle after 1000 cycles at a current density of 50 mA g−1. A full cell coupled with an FeOF cathode delivered a high energy density of 602.8 Wh kg−1.
Mechanistic Insights Into NIR‐II AIEgens Boosted Multimodal Phototheranostics
Authors: Zhu Jun , Tian Leyuan , Yan Dingyuan , Wang Dong , Tang Ben Zhong 
Published: December 2024

AbstractExploiting single molecular species synchronously affording powerful second near‐infrared (NIR‐II) fluorescence, superior photoacoustic output, prominent reactive oxygen species generation, and satisfactory photothermal conversion is supremely appealing for phototheranostics, yet remains formidably challenging. In this work, electron donor/π‐bridge engineering is implemented on the basis of 6,7‐di(thiophen‐2‐yl)‐[1,2,5]thiadiazolo[3,4‐g]quinoxaline moiety. The optimal molecule, namely TPATO‐TTQ, is demonstrates to exhibit those notable features requested by exceptional phototheranostics, which are systematically elucidated through the depictions of excited‐state energy dissipation pathways and the influence of intramolecular motion on the photophysical properties, with assistances of quantum chemical calculation and molecular dynamic simulation. By utilizing TPATO‐TTQ nanoparticles, unprecedented performance on NIR‐II fluorescence‐photoacoustic‐photothermal trimodal imaging‐navigated type I photodynamic‐photothermal synergistic therapy to orthotopic breast cancer is authenticates by the precise tumor diagnosis and complete tumor ablation.
Halogen‐Atom Engineering on Aromatic‐Core in Tethered Small Molecule Acceptors for High‐Performance Polymer Solar Cells
Authors: Jian Shanshan , Zang Yu , Meng Shixin , Zhang Ming , Li Zhengkai , Chen Qi , Chen Hongru , Wang Qingyuan , Chen Shanshan , Xue Lingwei , Wang Xiuyu , Zhang Zhi‐Guo 
Published: December 2024

AbstractTethered small molecular acceptors (SMAs), where multiple SMA‐subunits are connected to the aromatic core via flexible chains, are proposed to suppress thermodynamic relaxation when blended with polymer donors to construct stable polymer solar cells (PSCs). However, optimizing their chemical structure to further enhance device performance remains a challenge, requiring careful fine‐tuning between molecular aggregation and photovoltaic efficiency. In this study, the photovoltaic properties of tethered dimers are effectively modulated simply through halogen‐atom engineering on the aromatic core. Specifically, DY‐Cl with a chlorine atom and DY‐Br with a bromine atom are designed. The study revealed the chloride acceptor enhances the intermolecular interaction, promotes charge transport, and optimizes the morphology of the active layer compared with its bromide counterpart. Notably, DY‐Cl based PSCs achieves a power conversion efficiency of 18.72%, maintaining over 80% of initial PCE after operating for 1000 h. These findings underscore the potential advantages of halogen‐atom engineering on tethered acceptors as a straightforward yet effective method to achieve high efficiency and stable PSCs.
Spatially Confined Electrosynthesis of Halogen‐Poor and Carbonyl‐Rich Graphene for Boosting Water Desalination and Water Splitting
Authors: Liu Xiaotian , Yang Shuting , Huang Mingzheng , Devasenathipathy Rajkumar , Huang Qiulan , Huang Dujuan , Yang Zhongyun , Wang Limin , Chen Du‐Hong , Li Jian‐Feng , Fan Youjun , Chen Wei 
Published: December 2024

AbstractElectrochemical in situ modification of graphene remains a challenge because of the pretty low concentration of radicals generated during the electroexfoliation process. The spatially confined electrosynthesis of halogen‐poor and carbonyl‐rich graphene (XCG, X═F, Cl, Br) is reported. It is found that the effective radical addition reaction between graphite/graphene and electro‐generated radicals (halogen radical and carboxylic radical) is promoted by using X− and HCOO− as both intercalation ions and co‐reactants, which assists the efficient formation of high crystalline XCG. The assembled XCG membrane exhibited high interception for NaCl, KCl, MgCl2, and K2SO4 due to the narrow interlayer space. Theoretical calculations revealed favorable water migration on surface of F atoms, thus grasping the high water permeation. Furthermore, the halogen and carboxyl functional groups afforded XCG highly efficient water splitting. The current work highlights the in situ modification of graphene during the electroexfoliation process and the subsequent applications in membrane science, molecular engineering, and other energy‐related applications.
Iono‐Optic Impedance Spectroscopy (I‐OIS): A Model‐Less Technique for In Situ Electrochemical Characterization of Mixed Ionic Electronic Conductors
Authors: Nizet Paul , Chiabrera Francesco , Tang Yunqing , Alayo Nerea , Laurenti Beatrice , Baiutti Federico , Morata Alex , Tarancón Albert 
Published: December 2024

AbstractFunctional properties of mixed ionic electronic conductors (MIECs) can be radically modified by (de)insertion of mobile charged defects. A complete control of this dynamic behavior has multiple applications in a myriad of fields including advanced computing, data processing, sensing or energy conversion. However, the effect of different MIEC's state‐of‐charge is not fully understood yet and there is a lack of strategies for fully controlling the defect content in a material. In this work we present a model‐less technique to characterize ionic defect concentration and ionic insertion kinetics in MIEC materials: Iono‐Optic Impedance Spectroscopy (I‐OIS). The proof of concept and advantages of I‐OIS are demonstrated by studying the oxygen (de)insertion in thin films of hole‐doped perovskite oxides. Ion migration into/out of the studied materials is achieved by the application of an electrochemical potential, achieving stable and reversible modification of its optical properties. By tracking the dynamic variation of optical properties depending on the gating conditions, I‐OIS enables to extract electrochemical parameters involved in the electrochromic process. The results demonstrate the capability of the technique to effectively characterize the kinetics of single‐ and even multi‐layer systems. The technique can be employed for studying underlying mechanisms of the response characteristics of MIEC‐based devices.
Young children's translanguaging as emergent in and through open‐ended science pedagogies
Authors: Siry Christina , Wilmes Sara E. D. , Sportelli Doriana 
Published: December 2024

AbstractEquity‐focused calls for elementary education reform recognize the importance of student and teacher translanguaging, yet nuances of how this process unfolds in early childhood science is an underexplored area. This study examines young plurilingual children's participation in science investigations, with a view toward understanding how open‐ended pedagogical structures supported their communication and engagement as related to science learning. We examine the work of 4‐ to 6‐year‐olds as they participated in a 3‐week unit exploring worms and draw upon translanguaging theoretical perspectives to interpretively analyze their interactions in science. Situated in the multilingual national context of Luxembourg, the study examines the interactions of these plurilingual children and their teacher as they investigated worms in varied open‐ended pedagogical structures. Schools are trilingual in Luxembourg, yet approximately half of the students in the country's elementary schools do not come to school with proficiency in any of the three languages of instruction. Issues of equity in schooling are thus heavily bound in languages. The robust dataset incorporating video data were examined using multimodal interaction analysis, and three vignettes zoom in on children's actions, utterances, and materials in open‐ended science learning spaces, providing rich examples of classroom structures that support meaningful translanguaging through students' agentic science communication. Young students' communication and science engagement are inseparable, and this study shows that these intertwine through translanguaging, in a process which is emergent when children are able to agentically draw upon diverse resources to make meanings.
Translingual negotiation in mixed‐gender communication: An analysis of the interactions in research group meetings in engineering
Authors: Sun Minghui , Canagarajah Suresh 
Published: December 2024

AbstractAs a practical theory of language, translanguaging refers not only to speakers' use of multiple languages, but also to the deployment of other semiotic resources and artifacts in communication. To examine the use of semiotic resources and translingual negotiation strategies in STEM communication, this study explores the intersectionality of translingual communication and gender in a research group consisting of international engineering scientists (including doctoral students, postdoc and faculty) at a public university in the Midwestern United States. Using a translingual approach, we analyze the semiotic resources and translingual negotiation strategies adopted by these engineering scientists to resolve trouble‐in‐interaction and claim agency in group interaction. Data include eight audiovisual recordings of research group meetings (RGMs), transcribed following the conventions in conversation analysis for verbal and nonverbal communication. A turn‐by‐turn analysis of the chosen excerpts reveals: (1) members of the group adopt negotiation strategies to collaboratively resolve trouble‐in‐interaction, including entextualization (visualization in particular), recontextualization, and various verbal and nonverbal interactional strategies. In employing these strategies, they also skillfully integrate various semiotic repertoires such as gestures, body movements, environmental artifacts, and board work to facilitate the resolution of trouble‐in‐interaction and (2) female scientists adopt envoicing and interactional strategies to regain the floor to speak and display resistance when interrupted or ignored by their male colleagues. These findings suggest that while we embrace the affordances of a translingual orientation to STEM communication as it values the entire linguistic and semiotic repertoires of international STEM scientists, we should also acknowledge the existence of microaggressive acts against female members in RGMs. A more equitable and inclusive environment for intellectual engagement and group communication in STEM fields can only be created through the collaborative efforts of individuals, groups, and institutions.
Toward pedagogías entrenzadas: Braiding critical and asset‐based pedagogies of sciences, languages, and cultural responsiveness
Authors: Bonilla Diana , Morales‐Doyle Daniel 
Published: December 2024

AbstractRecent reforms in science education shift the focus of instruction to supporting students' sensemaking about phenomena. At the same time, discussions of equity in science education have become more common and more contested. For emergent bilingual (EB) learners, there is growing consensus that these trends together imply valuing diverse linguistic and cultural resources that students draw upon to make sense of the world. However, asset‐based pedagogies often do not attend to the role of oppression and the co‐construction of linguistic and racial marginalization. Furthermore, culturally responsive pedagogies push beyond valuing student assets to challenge the end goals of education, emphasizing the development of critical consciousness. Through this case study of one thematic unit within a transitional bilingual physical science class, this study puts forth pedagogías entrenzadas as a purposeful braiding of asset and critical pedagogies that attend to science, language, and cultural responsiveness. The study took place in a Title I school in the suburbs of a large midwestern city where the majority of students are from Latin American immigrant families. Pedagogías entrenzadas are articulated through the analysis of classroom episodes that attended to language, science, and cultural responsiveness in combination. By attending to these three facets in braided ways, the teacher created ruptures in systems that structurally exclude EB students. We present three classroom episodes in conjunction with additional evidence from a larger data set to demonstrate the ways pedagogías entrenzadas created spaces where (1) generative themes and words created opportunities for holistic sensemaking; (2) there were opportunities to consider and critique language and science; and (3) heterogeneity in linguistic, cultural, and academic resources was upheld and valued. The implications of this pedagogical work extended outside of the classroom, where the teacher successfully advocated with colleagues for the creation of an asset‐based bilingual science program.