bluuebunny/crossref_metadata_2025_split huggingface dataset:
Nucleophilic Substitution Enables MXene Maximum Capacitance and Improved Stability
Authors: Xu Jiang , Longchamps Ryan S. , Wang Xi , Hu Bingqing , Li Xude , Wang Shijian , Li Lvzhou , Gu Yaokai , Cao Xiaoting , Yuan Ningyi , Ge Shanhai , Wang Guoxiu , Ding Jianning 
Published: September 2024

AbstractCombining the merits of battery and supercapacitor into a single device represents a major scientific and technological challenge. From a design perspective, electrode material plays a key role in the device and the fundamental difficulty lies in incorporating a high density of active sites into a stable material with excellent charge transfer kinetics. Here, the synthesis is reported of a nearly full‐oxygen‐functionalized 2D conductive transition metal carbide (Ti3C2Oy) with ultrahigh density of Ti─O/═O redox‐active sites by nucleophilic substitution and in situ oxidation under the presence of a proper electrophilic reagent (K+). The fabricated electrode delivered exceptionally high gravimetric and volumetric capacitance (1,082 F g−1 and 3,182 F cm−3 in a potential window of 0.85 V, approximating the theoretical capacity of many transition metal oxides), fast charging/discharging in tens of seconds across a wide range of temperature (−70 to 60 °C), and excellent structural and chemical stability. These promising results provide avenues for the development of high‐energy, high‐power storage devices as well as electromagnetic shielding, and electronic and optoelectronic devices.
In Situ Monitoring of Dynamic Loads on Shafting via Nanogenerators
Authors: Wang Pengfei , Zhu Jianyang , Liu Ruoshui , Zhang Xiaosong , Li Hengyu , Yang Zheng , Cai Zhaobing , Gu Le , Cheng Xiaojun , Cheng Tinghai 
Published: September 2024

AbstractDynamic loads are inevitably generated during the operation of rotating machinery. In situ monitoring the dynamic loads is of great significance for assessing shafting health. Triboelectric nanogenerator (TENG) is sensitive to motion but not suitable for load monitoring, while piezoelectric nanogenerator (PENG) is just the opposite. Therefore, the combination of the two can complement each other. From this, a dynamic load monitoring smart bearing (DLMSB) integrated with TENG and PENG is proposed. The specially designed TENG can produce an “M‐waveform”, which can be used to extract rotation frequency and distinguish the quadrant of the rotor. Meanwhile, applying PENG to capture the load condition of the bearing, and referring to the main frequency of M‐waveform, it is convenient to obtain the dynamic loads of shafting. Furthermore, a real‐time monitoring system is developed, which can realize not only real‐time monitoring of the rotation speed and dynamic loads magnitude but also the quadrant discriminating of dynamic loads. The results have shown that the monitoring error for dynamic loads is 3 N or 5.5%, and the accuracy rate for determining the quadrant of the dynamic loads can reach 93%. This study provides a novel approach for the in situ monitoring of mechanical operating status via nanogenerators.
Initiator‐Free Crosslinking Process Without Organic Solvent for Polymer Gel Electrolyte of Lithium Metal Batteries
Authors: Park Sanghyun , Song Chi Keung , Jung Mincheol , Jeon Seong Min , Chae Changhee , Song Woo‐Jin , Lee Kyung Jin 
Published: September 2024

AbstractFor the next generation of lithium batteries, polymer‐based electrolytes are promising candidates for resolving issues from liquid electrolytes such as leakage, flammability, and explosion. Various attempts have been carried out to develop polymer electrolytes based on poly(ethylene oxide) (PEO), polyacrylonitrile, polyvinylidene fluoride, etc., resulting in suppression for dendrite growth on Li metal and mechanical support against internal or external shock as well. Among these polymer electrolytes, PEO has been widely used due to their relatively high ionic conduction through the hopping of Li ions. Herein, poly(GAP‐co‐THF) diol (PGT) having a similar main chain to PEO while containing azide groups in a side chain is synthesized. To enhance the processability of polymer electrolytes, the thermal crosslinking process is performed via azide‐alkene cycloaddition between PGT and poly(ethylene glycol) diacrylate with lithium bis(trifluoromethanesulfonyl)imide without any initiators and organic solvents. Thickness controllable thin film of polymer electrolyte is obtained after the crosslinking process, resulting in outstanding advantages with respect to stacking of batteries. To check the electrochemical stabilities and cell performances of these polymer electrolytes, cyclic voltammetry, linear symmetric voltammetry, LiFePO4∥Li cell, and Li symmetric cell tests are accomplished.
Copper‐Catalyzed Enantioselective Dehydro‐Diels–Alder Reaction: Atom‐Economical Synthesis of Axially Chiral Carbazoles
Authors: Chen Hua‐Hong , Chen Yang‐Bo , Gao Jun‐Zhe , Ye Long‐Wu , Zhou Bo 
Published: September 2024

AbstractThe dehydro‐Diels–Alder (DDA) reaction is a powerful method for the construction of aromatic compounds. However, the enantioselective DDA reaction has been rarely developed, probably due to the competitive thermal reaction. Herein, we report a copper‐catalyzed enantioselective DDA reaction through vinyl cation pathway. The reaction leads to the atom‐economical synthesis of axially chiral phenyl and indolyl carbazoles in generally excellent yields with good to excellent atroposelectivities. This methodology represents the first example of non‐noble metal‐catalyzed enantioselective DDA reaction. Notably, new chiral ligand and organocatalyst derived from the constructed axially chiral carbazole are demonstrated to be useful in asymmetric catalysis.
Opal‐Inspired SiO2‐Mediated Carbon Dot Doping Enables the Synthesis of Monodisperse Multifunctional Afterglow Nanocomposites for Advanced Information Encryption
Authors: Guan Shuaimeng , Chen Xue , Yu Rui , Xu Weidong , Wu Zhongbin , Doug Suh Yung , Liu Xiaowang , Huang Wei 
Published: September 2024

AbstractDespite recent advancements in inorganic and organic phosphors, creating monodisperse afterglow nanocomposites (NCs) remains challenging due to the complexities of wet chemistry synthesis. Inspired by nanoinclusions in opal, we introduce a novel SiO2‐mediated carbon dot (CD) doping method for fabricating monodisperse, multifunctional afterglow NCs. This method involves growing a SiO2 shell matrix on monodisperse nanoparticles (NPs) and doping CDs into the SiO2 shell under hydrothermal conditions. Our approach preserves the monodispersity of the parent NP@SiO2 NCs while activating a green afterglow in the doped CDs with an impressive lifetime of 1.26 s. Additionally, this method is highly versatile, allowing for various core and dopant combinations to finely tune the afterglow through core‐to‐CD or CD‐to‐dye energy transfer. Our findings significantly enhance the potential of SiO2 coatings, transforming them from merely enhancing the biocompatibility of NCs to serving as a versatile matrix for emitters, facilitating afterglow generation and paving the way for new applications.
Gewellte Graphen‐Nanostreifen mit Periodischen Achtgliedrigen Ringen für Lichtemittierende Elektrochemische Zellen
Authors: Obermann Sebastian , Zhou Xin , Guerrero‐León L. Andrés , Serra Gianluca , Böckmann Steffen , Fu Yubin , Dmitrieva Evgenia , Zhang Jin‐Jiang , Liu Fupin , Popov Alexey A. , Lucotti Andrea , Hansen Michael Ryan , Tommasini Matteo , Li Yungui , Blom Paul W. M. , Ma Ji , Feng Xinliang 
Published: September 2024

AbstractPräzisions‐Graphen‐Nanostreifen (GNS, engl. GNR) bieten charakteristische physikalisch‐chemische Eigenschaften, die in hohem Maße von ihrer geometrischen Topologie abhängen, und bergen damit großes Potenzial für Anwendungen in der kohlenstoffbasierten Optoelektronik und Spintronik. Während die Kontrolle der Randstruktur und Breite eine beliebte Strategie für die Entwicklung der optoelektronischen Eigenschaften von GNRs ist, sind nicht‐Sechsring‐haltige GNRs aufgrund synthetischer Herausforderungen noch wenig erforscht, obwohl sie ein ebenso großes Potenzial für maßgeschneiderte Eigenschaften bieten. In diesem Artikel berichten wir über die Synthese eines gewellten GNR (engl. wGNR), in dessen Kohlenstoffgerüst periodisch achtgliedrige Ringe eingebettet sind. Dies wurde durch eine A2B2‐Diels–Alder‐Polymerisation zwischen Dibenzocyclooctadiin (6) und einem Dicyclopenta[e,l]pyren‐5,11‐dion‐Derivat (8) erreicht, gefolgt von einer selektiven Scholl‐Reaktion des erhaltenen Leiter‐Typ Polymervorläufers (engl. LTP). Der erhaltene wGNR mit einer Länge von bis zu 30 nm wurde durch Festkörper NMR ‐, FT‐IR‐, Raman‐ und UV/Vis‐Spektroskopie, und mit Hilfe von DFT‐Berechnungen eingehend charakterisiert. Die nicht planare Geometrie des wGNR verhindert effizient die π–π‐Aggregation zwischen den Streifen, was zu Photolumineszenz in Lösung führt. Folglich können die wGNR als emittierende Schicht für organische elektrochemisch Licht emittierende Zellen (engl. OLECs) fungieren und bieten einen Konzeptnachweis für die Implementierung lumineszierender GNRs in optoelektronische Geräte. Die schnell reagierenden OLECs, die wGNR verwenden, werden den Weg für Fortschritte in der OLEC‐Technologie und anderen optoelektronischen Geräten ebnen.
Diatomic Catalysts for Aqueous Zinc‐Iodine Batteries: Mechanistic Insights and Design Strategies
Authors: Hei Peng , Sai Ya , Li Wenjie , Meng Jianming , Lin Yulai , Sun Xiaoqi , Wang Jing , Song Yu , Liu Xiao‐Xia 
Published: September 2024

AbstractThere has been a growing interest in developing catalysts to enable the reversible iodine conversion reaction for high‐performance aqueous zinc‐iodine batteries (AZIBs). While diatomic catalysts (DACs) have demonstrated superior performance in various catalytic reactions due to their ability to facilitate synergistic charge interactions, their application in AZIBs remains unexplored. Herein, we present, for the first time, a DAC comprising Mn−Zn dual atoms anchored on a nitrogen‐doped carbon matrix (MnZn−NC) for iodine loading, resulting in a high‐performance AZIB with a capacity of 224 mAh g−1 at 1 A g−1 and remarkable cycling stability over 320,000 cycles. The electron hopping along the Mn−N−Zn bridge is stimulated via a spin exchange mechanism. This process broadens the Mn 3dxy band width and enhances the metallic character of the catalyst, thus facilitating charge transfer between the catalysts and reaction intermediates. Additionally, the increased electron occupancy within the d‐orbital of Zn elevates Zn's d‐band center, thereby enhancing chemical interactions between MnZn−NC and I‐based species. Furthermore, our mechanism demonstrates potential applicability to other Metal‐Zn−NC DACs with spin‐polarized atoms. Our work elucidates a clear mechanistic understanding of diatomic catalysts and provides new insights into catalyst design for AZIBs.
Glycosylated AIE‐active Red Light‐triggered Photocage with Precisely Tumor Targeting Capability for Synergistic Type I Photodynamic Therapy and CPT Chemotherapy
Authors: Zhou Wei , Liu Yi‐chen , Liu Guang‐jian , Zhang Yuan , Feng Gai‐li , Xing Guo‐wen 
Published: September 2024

AbstractPhotocaging is an emerging protocol for precisely manipulating spatial and temporal behaviors over biological activity. However, the red/near‐infrared light‐triggered photolysis process of current photocage is largely singlet oxygen (1O2)‐dependent and lack of compatibility with other reactive oxygen species (ROS)‐activated techniques, which has proven to be the major bottleneck in achieving efficient and precise treatment. Herein, we reported a lactosylated photocage BT‐LRC by covalently incorporating camptothecin (CPT) into hybrid BODIPY‐TPE fluorophore via the superoxide anion radical (O2−⋅)‐cleavable thioketal bond for type I photodynamic therapy (PDT) and anticancer drug release. Amphiphilic BT‐LRC could be self‐assembled into aggregation‐induced emission (AIE)‐active nanoparticles (BT‐LRCs) owing to the regulation of carbohydrate‐carbohydrate interactions (CCIs) among neighboring lactose units in the nanoaggregates. BT‐LRCs could simultaneously generate abundant O2−⋅ through the aggregation modulated by lactose interactions, and DNA‐damaging agent CPT was subsequently and effectively released. Notably, the type I PDT and CPT chemotherapy collaboratively amplified the therapeutic efficacy in HepG2 cells and tumor‐bearing mice. Furthermore, the inherent AIE property of BT‐LRCs endowed the photocaged prodrug with superior bioimaging capability, which provided a powerful tool for real‐time tracking and finely tuning the PDT and photoactivated drug release behavior in tumor therapy.
Exploring the Potential of Seed‐Based Dwarf Eelgrass (Zostera noltii) Restoration
Authors: Gräfnings Max L. E. , Hijner Nadia , Heusinkveld Jannes H. T. , Zwarts Maarten , Maldonado Gabriela , Wiersema Henk , Cammenga Raven , Smeele Quirin , van der Heide Tjisse , Govers Laura L. 
Published: September 2024

ABSTRACT

Dwarf eelgrass, Zostera noltii, is an important ecosystem engineer that creates dense meadows along the coasts of Europe and Northwest Africa. During the last century, this seagrass species suffered severe population declines, and to counteract these losses, restoration has emerged as an important management tool. Thus far, restoration efforts with Z. noltii have only been performed with shoot‐ and core‐based methods, which are challenging to upscale sustainably.

Here, we explored if Z. noltii can be restored with seeds, thus potentially offering an upscalable solution for future restoration efforts. With the newly developed dispenser injection seeding (DIS) method, we tried seed‐based Z. noltii restoration in the intertidal Wadden Sea. With a field experiment, we investigated how seeding depth (1.5 and 3 cm) and seed amount (5, 10 and 20 seeds/injection) affected Z. noltii recruitment success and efficiency.

Most importantly, our results show that Z. noltii can be restored with seeds, as 3 months after seeding, 184 individual patches had emerged from our 7000 seeds (2.6% recruitment). Recruitment success (number of restored patches/plot) was enhanced by higher seed amounts (20 > 5 seeds/injection), while the opposite was true for recruitment efficiency (number of restored patches/seed), which was reduced by higher seed amounts (20 < 5 seeds/injection). Restored Z. noltii survived the first winter in all experimental plots, but seagrass cover (square metre/plot) reduced in two‐thirds of the plots compared to the first growing season.

In conclusion, our findings show the potential of seed‐based Z. noltii restoration and provide insights on how upscaling of restoration efforts for this species can be performed more efficiently and sustainably in the future.
Output feedback stabilization of logical dynamical systems with state‐dependent control constraints
Authors: Dai Chaoqun , Guo Yuqian 
Published: September 2024

AbstractControl constraints are common in real‐world applications. However, when the control constraint depends on the system state, designing a stabilizing output feedback that adheres to the constraint can be challenging if the state is unmeasurable. This study proposes a novel dual‐loop structural output feedback for logical dynamical systems (LDSs) with state‐dependent control constraints. The inner‐loop controller is a pre‐output feedback designed based on the state‐dependent constraint, which always selects a common admissible control for all possible states. A system with free control input is obtained by combining the pre‐output feedback with the LDS. The outer‐loop controller, an ordinary output feedback, is then designed for the combined system. It is proven that any admissible time‐invariant output feedback can be decomposed into a pre‐output feedback and an ordinary output feedback. Furthermore, a necessary and sufficient condition for stabilizability by admissible output feedback is obtained. Finally, an example is presented to demonstrate the effectiveness of the obtained results.
Green servitization, circular economy, and sustainability a winning combination analysis through hybrid SEM‐ANN approach
Authors: Johl Satirenjit Kaur , Ali Kashif , Shirahada Kunio , Oyewale Oyelakin Idris 
Published: September 2024

AbstractTo accomplish the 2030 Sustainable Development Goals (SDGs), the manufacturing industry faces significant hurdles, particularly in embracing green servitization and circular economy ideas and confronting the dearth of research on green servitization for sustainability. To fill this lacuna, this study examines the role of green servitization in promoting circular economy practices (CEPs) and sustainability in Malaysian manufacturing firms. A robust framework has been forged based on the natural resource‐based view (NRBV) theory. Data from a survey of 251 manufacturing firms (Malaysian and Japanese) were collected and analyzed using a hybrid methodology that included structural equation modeling and artificial neural network (SEM‐ANN). The research findings from SEM highlight that green servitization positively promotes CEP and sustainable performance. Furthermore, CEP has a mediating role between green servitization and sustainable performance. The ANN results indicate that CEP is the dominant predictor of sustainability dimensions. Unlike the prior research that theoretically assumes that all relationships are linear, this has been the nascent study that has successfully validated that there exists a nonlinear relationship in the NRBV framework. Based on the outcomes, study contributions, practical implications, and future research avenues have been discussed.
Phytochemical Diversity and Biological Effects of Juniperus Thurifera L., Essential Oil : A Comparative Study using In Vitro and In Silico Methods
Authors: Elhrech Hamza , Aguerd Oumayma , El Omari Nasreddine , Benali Taoufiq , Akhazzane Mohamed , Ullah Riaz , Alotaibi Amal , Chamkhi Imane , Bouyahya Abdelhakim 
Published: September 2024

AbstractJuniperus thurifera L., a plant endemic to the Moroccan High Atlas Mountains, thrives in extreme climatic conditions, resulting in the production of valuable secondary metabolites. This study aims to elucidate the phytochemical diversity and biological activities of J. thurifera essential oil (JTEO) through a comparative analysis of samples from two distinct regions: Tensift‐Al Haouz and Azilal, using both in vitro and in silico methods. Gas Chromatography‐Mass Spectrometry (GC‐MS) analysis revealed 21 components in the Tensift‐Al Haouz JTEO (99.99 % of the oil) and 23 components in the Azilal JTEO (99.58 % of the oil), with oxygenated monoterpenes being the predominant compounds in both. The biological activities were assessed in vitro. Antioxidant properties, evaluated using DPPH, FRAP, and ABTS assays, showed significant activity in both oils. Antibacterial activity was tested against two strains of Gram‐positive and two strains of Gram‐negative bacteria, with both oils demonstrating notable bacterial growth inhibition. Enzymatic assays assessed the antidiabetic (α‐amylase and α‐glucosidase), dermo‐protective (tyrosinase and elastase), and neuroprotective (AChE and BChE) activities. Both oils displayed substantial inhibitory effects across all tested activities, with variations attributed to their distinct chemical compositions. In silico analyses of six target enzymes confirmed significant binding affinities of the major compounds. Notably, 2,2’‐Thiobis(6‐tert‐butyl‐p‐cresol) exhibited strong binding affinities with AChE, BChE, α‐amylase, α‐glucosidase, tyrosinase, and elastase, with binding energies ranging from −10.0 to −6.2 kcal/mol. These findings indicate that JTEO is a rich source of bioactive compounds with promising potential in pharmacological and cosmetic applications.
Concentration‐Dependent Thermodynamics of the Inhibitory Paths in Homogeneous Mn(I) Hydrogenation Catalysis
Authors: Yang Wenjun , Nieuwlands Erik , Chernyshov Ivan Yu. , Filonenko Georgy A. , Pidko Evgeny A. 
Published: September 2024

AbstractMany catalytic reactions suffer from product inhibition, which especially hard to control in homogeneous hydrogenation due to the scaling relation between the inhibited and active states of the catalyst. We recently reported one such pathway in Mn(I) hydrogenation and demonstrated that addition of alkoxide bases could affect the thermodynamic favorability of this reaction and selectively suppress the product inhibition. Since external reaction promotors are formally not involved in reaction thermodynamics, we set to investigate the explicit molecular interactions behind these apparently environmental effects. Herein, we reveal that the thermodynamic landscape of the inhibitory process exhibits a non‐monotonic dependence on the base concentration. This study related this phenomenon to the presence of two dominant mechanisms operating at different base concentrations. Specifically, the base additives can enhance the ionic strength and lower the free energy of the inhibited state at low promotor concentration. At high base concentrations this study suggested the formation of highly labile alcohol‐alkoxide clusters which stabilize the free alcohol and make its addition to the catalyst unfavourable, thereby suppressing the inhibition. While relatively weak, such noncovalent interactions between reactants and reaction environment can cause substantial perturbations to the free energy of catalytic process, ultimately deciding its fate.
Heterogeneous Electrocatalysts for Electrochemical Cross‐Coupling Reactions
Authors: Kori Deepak K. K. , Das Apurba K. 
Published: September 2024

AbstractElectro‐organic synthesis, a method that uses electrical current to drive various organic transformations, has garnered significant attention, and so has heterogeneous electrosynthesis, a process that produces chemicals through electrochemical reactions at the interface between the electrode and an electrolyte. This concept highlights the synergistic potential of heterogeneous electrocatalysts, particularly in their use in cross‐coupling reactions. After thoroughly analyzing existing literature, key examples have been highlighted in this paper where heterogeneous electrocatalysts have facilitated the transformation of simple starting materials into useful products. This process lowers energy consumption and reduces waste. We hope this short review sparks the interest among those involved in organic electrosynthesis to explore and use heterogeneous electrocatalysis for cross‐coupling reactions.
Political long‐termism and the European Union: Five research questions for the future
Authors: Leruth Benjamin 
Published: September 2024

AbstractThis article introduces the concept of political long‐termism, defined as the conscious choice to prioritise the future consequences of today's political actions over their short‐term benefits and emphasises its relevance in the realm of European Studies. It contends that the European Union (EU), in theory, possesses the potential to address creeping crises more effectively than its member states, while acknowledging the varying degrees of support for political long‐termism within different EU institutions. The article advocates for additional research to explore the EU and international organisations' role in fostering political long‐termism, an area that has seen limited empirical investigation. To do so, it proposes five research questions as a starting point to establish political long‐termism as a subdiscipline of European Studies. As such, it aims to set the agenda by shedding light on the intertemporal aspect of EU politics.