bluuebunny/crossref_metadata_2025_split huggingface dataset:
Linker‐Mediated Delocalized Excited States in Dimeric Acceptors Enable Efficient Exciton Dissociation with Negligible Energy‐Level Offsets
Authors: Shi Sheng‐Yu , Yang Chao , Xu Xinjie , Liu Zhi‐Xi , Duan Wanchun , Chen Xing‐Xing , Lu Zhou , Zhou Hongping , Yu Zhi‐Peng , Li Chang‐Zhi 
Published: October 2024

AbstractEfficient exciton dissociation at low energy offsets is key to overcoming voltage losses in organic solar cells. In this work, we developed two dimeric acceptors, i‐YT and o‐YT, by precisely controlling the position of an asymmetric electron‐donating linker. It induced the foldamer conformation of i‐YT with a para linkage (relative to the dicyano groups), while retaining the unfold conformation for o‐YT. This subtle structural modification influenced the molecular assembly properties, enabled near‐zero energy offset exciton dissociation and power conversion efficiencies exceeding 18 % for i‐YT based organic solar cells. Detailed excitonic dynamics further revealed that the linker position critically influences three processes: the formation of delocalized singlet excited states, ultrafast charge transfer (~5 ps) in solid blends, and the suppression of exciton recombination. Additionally, devices based on i‐YT demonstrated outstanding long‐term stability, retaining 85 % of their initial efficiency after 1,400 hours of continuous illumination. These findings introduce a new class of dimeric acceptors that combine high efficiency with exceptional stability, offering a promising pathway toward low‐energy‐loss organic photovoltaics.
Remote Enantioselective ϵ‐Alkylation of Copper Ethynylallenylidenes: Precise Control of Central and Axial Chirality
Authors: Wen Yu‐Hua , Liu Minghao , Wang Yu‐Hao , Gong Qian‐Wei , Li Shuai , Song Jin , Gong Liu‐Zhu 
Published: October 2024

AbstractChiral tetrasubstituted allenes have emerged as important architectures for engineering biologically active compounds. The construction of unique tetrasubstituted allene scaffolds with precise control of continuous central and axial chirality remains yet to be developed. Here, we report a remote enantioselective ϵ‐alkylation of yne‐propargylic acetates with enals enabled by NHC and copper cooperative catalysis, leading to a series of tetrasubstituted allenes with excellent enantioselectivities (up to >99 % ee) and diastereoselectivities (up to >95 : 5 dr). This method features high regioselectivity and simultaneous control of axial and central chirality. Mechanistic studies suggest a cooperative activation mode and synergistic control of distal chirality created from the copper ethynylallenylidenes.
A Synthetic Oligosaccharide Resembling Francisella tularensis Strain 15 O‐Antigen Capsular Polysaccharide as a Lead for Tularemia Diagnostics and Therapeutics
Authors: Pradhan Kabita , Reuber Emelie E. , Sletten Eric T. , Tomaso Herbert , Seeberger Peter H. 
Published: October 2024

AbstractFrancisella tularensis, a category A bioterrorism agent, causes tularemia in many animal species. F. tularensis subspecies tularensis (type A) and holarctica (type B) are mainly responsible for human tularemia. The high mortality rate of 30–60 % caused by F. tularensis subspecies tularensis if left untreated and the aerosol dispersal renders this pathogen a dangerous bioagent. While a live attenuated vaccine strain (LVS) of F. tularensis type B does not provide sufficient protection against all forms of tularemia infections, a significant level of protection against F. tularensis has been observed for both passive and active immunization of mice with isolated O‐antigen capsular polysaccharide. Well‐defined, synthetic oligosaccharides offer an alternative approach towards the development of glycoconjugate vaccines. To identify diagnostics and therapeutics leads against tularemia, a collection of F. tularensis strain 15 O‐antigen capsular polysaccharide epitopes were chemically synthesized. Glycan microarrays containing synthetic glycans were used to analyze the sera of tularemia‐infected and non‐infected animals and revealed the presence of IgG antibodies against the glycans. Two disaccharide (13 and 18), both bearing a unique formamido moiety, were identified as minimal glycan epitopes for antibody binding. These epitopes are the starting point for the development of diagnostics and therapeutics against tularemia.
Upcycling of Polyamide Wastes to Tertiary Amines Using Mo Single Atoms and Rh Nanoparticles
Authors: Tang Minhao , Shen Ji , Zhang Fengtao , Zhao Yanfei , Gan Tao , Zeng Wei , Li Rongxiang , Wang Dingsheng , Han Buxing , Liu Zhimin 
Published: October 2024

AbstractThe pursuit of sustainable practices through the chemical recycling of polyamide wastes holds significant potential, particularly in enabling the recovery of a range of nitrogen‐containing compounds. Herein, we report a novel strategy to upcycle polyamide wastes to tertiary amines with the assistance of H2 in acetic acid under mild conditions (e.g., 180 °C), which is achieved over anatase TiO2 supported Mo single atoms and Rh nanoparticles. In this protocol, the polyamide is first converted into diacetamide intermediates via acidolysis, which are subsequently hydrogenated into corresponding carboxylic acid monomers and tertiary amines in 100 % selectivity. It is verified that Mo single atoms and Rh nanoparticles work together to activate both amide bonds of the diacetamide intermediate, and synergistically catalyze its hydrodeoxygenation to form tertiary amine, but this catalyst is ineffective for hydrogenation of carboxylic acid. This work presents an effective way to reconstruct various polyamide wastes into tertiary amines and carboxylic acids, which may have promising application potential.
Cross‐Linkable Fullerene Electron Transport Layer with Internal Encapsulation Capability for Efficient and Stable Inverted Perovskite Solar Cells
Authors: Hou Enlong , Cheng Shuo , Qiu Yujue , Chen Xingyu , Chen Jingfu , Sun Chao , Zhang Hui , Yang Jinxin , Zhao Xinjing , Xie Liqiang , Chen Zuochang , Tian Chengbo , Wei Zhanhua 
Published: October 2024

AbstractA stable and compact fullerene electron transport layer (ETL) is crucial for high‐performance inverted perovskite solar cells (PSCs). However, traditional fullerene‐based ETLs like C60 and PCBM are prone to aggregate under operational conditions, a challenge recently recognized by academic and industrial researchers. Here, we designed and synthesized a novel cross‐linkable fullerene molecule, bis((3‐methyloxetan‐3‐yl)methyl) malonate‐C60 monoadduct (BCM), for use as an ETL in PSCs. Upon a low‐temperature annealing at 100 °C, BCM undergoes in situ cross‐linking to form a robust cross‐linked BCM (CBCM) film, which demonstrates excellent electron mobility and a suitable band structure for efficient PSCs. Our results show that PSCs incorporating CBCM‐based ETL achieve an impressive efficiency of 25.89 % (certified: 25.36 %), significantly surpassing the 23.25 % efficiency of PCBM‐based devices. The intramolecular covalent interactions within CBCM films effectively prevent aggregation and enhance film compactness, creating an internal encapsulation layer that mitigates the decomposition and ion migration of perovskite components. Consequently, CBCM‐based PSCs show exceptional stability, maintaining 97.8 % of their initial efficiency after 1000 hours of maximum power point tracking, compared to only 78.6 % retention in PCBM‐based devices after less than 820 hours.
Sustaining 500,000 Folding Cycles Through Bioinspired Stress Dispersion Design in Sodium‐Ion Batteries
Authors: Pu Shu , Zan Guangtao , Zhou Hongmin , Dong Kangze , Mao Xiaoge , Wu Qingsheng , Wu Tong 
Published: October 2024

AbstractDeveloping super‐foldable electronic materials and devices presents a significant challenge, as intrinsic conductive materials are unable to achieve numerous true‐folding operations (super‐foldable) due to limitations from short‐range forces of chemical bonds. Consequently, super‐foldable batteries remain unexplored. This work focused on sodium‐ion batteries as a breakthrough point to advance super‐foldable devices. By employing a “2+1” bioinspired strategy, we stepwise designed and assembled super‐foldable components, from substrates to electrodes, and to ultimately device. This bioinspired approach completely disperses folding stress and thus prevents the breakage of chemical bonds, enabling the successful fabrication of the first super‐foldable ion battery. This battery can withstand true‐folding at any angle, in any direction, and for an unprecedented number of cycles—far outperforming current foldable phones with hinge structures. Remarkably, after 500,000 true‐folding cycles, the battery's microstructure remains intact with no significant degradation of electrochemical performance. Real‐time dynamic folding observations reveal an M‐shaped folding structure within the bioinspired materials, which effectively disperses stress via bulged layers, dispersed arcs, and slidable microgrooves that work together across different directions and dimensions to achieve super‐foldability. Mechanical simulations vividly verify this principle. This work represents a breakthrough in super‐foldable devices, offering valuable insights and promoting practical application for future super‐foldable devices.
A Novel Anion Receptor Additive for −40 °C Sodium Metal Batteries by Anion/Cation Solvation Engineering
Authors: Li Meng , Jiang Jinlong , Chen Ying , Huang Shoushuang , Liu Xiaoyu , Yi Jin , Jiang Yong , Zhao Bing , Li Wenrong , Sun Xueliang , Zhang Jiujun 
Published: October 2024

AbstractSodium metal batteries, known for their high theoretical specific capacity, abundant reserves, and promising low‐temperature performance, have garnered significant attention. However, the large ionic radius of Na+ and sluggish transport kinetics across the interfacial structure hinder their practical application. Previous reviews have rarely regulated electrolyte performance from the perspective of anions, as important components of the electrolyte, the regulation mechanism is not well understood. Herein, a novel anion receptor additive, 4‐aminophenylboronic acid pinacol ester (ABAPE), is proposed to weaken the coupling between anions and cations and accelerate Na+ transport kinetics. The results of theoretical calculations and X‐ray photoelectron spectroscopy with deep Ar‐ion etching demonstrate that the introduction of this additive alters the solvation structure of Na+, reduces the desolvation barrier and forms a stable and dense electrode‐electrolyte interface. Moreover, ABAPE forms hydrogen bonds (−NH ⋅ ⋅ ⋅ O/F) with H2O/HF, effectively preventing the hydrolysis of NaPF6 and stabilizing acidic species. Consequently, the Na||Na symmetric cell exhibits excellent long‐cycle performance of 500 h at 1 mA cm−2 and 0.5 mAh cm−2. The Na||Na3V2(PO4)3 (NVP) cell with the addition of ABAPE maintains a capacity retention of 84.29 % at 1 C after 1200 cycles and presents no capacity decay over 150 cycles at −40 °C.
Polysilaketals: High‐Performance Polyether‐Based Electrolytes with Tunable Disubstituted Silane Linkers
Authors: Rugh Haley J. , Lee Jaeyong , Sun Chenyue , Abdo Emily E. , Bem Juliana N. , Balsara Nitash P. , Coates Geoffrey W. 
Published: October 2024

AbstractPolymer electrolytes exhibit higher energy density and improved safety in lithium‐ion batteries relative to traditionally used liquid electrolytes but are currently limited by their lower electrochemical performance. Aiming to access polymer electrolytes with competitive electrochemical properties, we developed the anionic ring‐opening polymerization (AROP) of cyclic silaketals to synthesize amorphous silicon‐containing polyether‐based electrolytes with varying substituent bulk of the general formula [OSi(R)2(CH2CH2O)2]n (R=alkyl, phenyl). As opposed to previously reported uncontrolled polycondensation routes toward low molecular weight polysilaketals, AROP allows access to targeted molecular weights above the entanglement threshold of the polymers. The polysilaketal with the lowest steric bulk (P(OSiMe,Me‐2EO)) exceeds the conductivity of poly(ethylene oxide) (PEO), a leading polymer electrolyte. To the best of our knowledge, this is the first solid polymer electrolyte to achieve this benchmark. Steric bulk in polysilaketals was found to impart stability and two bulkier polysilaketals, P(OSiEt,Et‐2EO) and P(OSiMe,Ph‐2EO), exhibited higher current fractions than PEO over a wide range of salt loadings. Moreover, the efficacy of P(OSiEt,Et‐2EO) was competitive with that of PEO. Taken together, the tunable and competitive electrochemical properties of polysilaketals validate the systematic incorporation of silyl groups as a strategy to access high performance polymer electrolytes.
Prompting CO2 Electroreduction to Ethanol by Iron Group Metal Ion Dopants Induced Multi‐sites at the Interface of SnSe/SnSe2 p–n Heterojunction
Authors: Zheng Xinyue , Hu Yan , Wang Xiangyu , Zhu Jiahui , Zhang Xingyue , Sheng Tian , Wu Zhengcui 
Published: October 2024

AbstractThe development of non‐copper‐based materials for CO2 electroreduction to ethanol with high selectivity at large current density is highly desirable, but still a great challenge. Herein, we report iron group metal ions of M2+ (M=Fe, Co, or Ni)‐doped amorphous/crystalline SnSe/SnSe2 nanorod/nanosheet hierarchical structures (a/c‐SnSe/SnSe2) for selective CO2 electroreduction to ethanol. Iron group metal ions doping induces multiple active sites at the interface of M2+‐doped SnSe/SnSe2 p‐n heterojunction, which strengthens *CO intermediate binding for further C−C coupling to eventual ethanol generation. As a representative, Fe9.0%‐a/c‐SnSe/SnSe2 exhibits an ethanol Faradaic efficiency of 62.7 % and a partial current density of 239.0 mA cm−2 at −0.6 V in a flow cell. Moreover, it can output an ethanol Faradaic efficiency of 63.5 % and a partial current density of 201.2 mA cm−2 with a full‐cell energy efficiency of 24.1 % at 3.0 V in a membrane electrode assembly (MEA) electrolyzer. This work provides insight into non‐Cu based catalyst design for stabilizing the key intermediates for selective ethanol production from CO2 electroreduction.
The Methods for Estimating Lake Volume, Mean Depth, and Maximum Depth in European Standard EN 16039:2011 Are Flawed and Should Not Be Used
Authors: Seekell David , Gudasz Cristian 
Published: October 2024

ABSTRACTThe European Standard EN 16039:2011 provides guidelines for assessing lake hydromorphology within the Water Framework Directive and includes methods for estimating volume, mean depth, and maximum depth based on statistical models applied to data from topographic maps. We tested the predictive accuracy of these models using independently collected bathymetric data from 35 Swedish lakes. The models had no predictive power, and the maximum depth predictions were inversely correlated with the observed values. The mean absolute percent error was 46% for volume and mean depth, and 85% for maximum depth. The models are flawed and should not be used.
Landing control of a quadrotor on a moving platform with unknown speed in the field of view
Authors: Li Junyan , Zhu Chunli , Lv Yuezu , Chen Lei 
Published: October 2024

AbstractThis paper proposes a solution for the landing of quadrotor UAV on moving platform with unknown speed. To ensure landing target within the field of view, a feasible region is first defined with the angle between the centroid of quadrotor and target in an expected range. Then an adaptive controller is designed to complete the landing process constrained in the feasible region for all targets with smaller speed than a control gain. Furthermore, to restrain the disturbance of target speed, the controller is improved to regulate landing process with an induced angle. The robust controller restrains the possible oscillation caused by uncertainty of target speed. Both numerical simulations and real‐world experiment validated the proposed solution.
The role of visual perception and executive functions on writing skills with learning disabilities: The case of Turkish‐speaking children
Authors: Altindağ Kumaş Özlem , Sümer Dodur Halime Miray 
Published: October 2024

AbstractThis study examined the effects of visual perception and executive function skills on the writing skills of Turkish students with learning disabilities and typically developing Turkish students. Given the unique features of the Turkish language, such as vowel harmony and articulatory structure, this research addresses a significant gap in understanding how these factors influence writing abilities in this population. The study employed a comparative design involving students with learning disabilities and typically developing students and analysed their writing errors, executive function and visual perception levels. Significant differences were found between the two groups, with students with learning disabilities performing worse across all the measures. Correlation analysis indicated significant relationships between writing errors and visual perception, working memory and executive functioning. Multiple regression analysis further revealed that these cognitive factors were crucial predictors of writing skills. These findings underscore the importance of considering visual perception and executive functions when formulating and implementing writing instruction strategies for Turkish students with learning disabilities.
Effect of Dopant Concentration on Luminescence Properties of Na3Ca2(SO4)3F: RE (RE = Eu3+, Dy3+) Phosphor for Solid‐State Lighting
Authors: Tatte Sonal P. , Mishra G. C. , Dhoble N. S. , Dhoble S. J. 
Published: October 2024

ABSTRACTA fluoride material phosphor doped with rare earth ions Eu3+ and Dy3+ was studied for its photoluminescence (PL) properties. The material was synthesized using a combustion method and characterized using X‐ray diffraction (XRD) and PL techniques. The Na3Ca2(SO4)3F: Eu3+ phosphor exhibits two distinct peaks at 593 nm (orange) and 615 nm (red) at an excitation wavelength of 395 nm. The PL excitation spectrum of the Na3Ca2(SO4)3F: Dy3+ phosphor showed series of peaks, corresponding to the 4f → 4f transitions of Dy3+ ions. Under 350‐nm excitation, the PL emission spectrum revealed two prominent bands one at 483 nm (blue region) due to the 4F₉/₂ → 6H₁₅/₂ transition, and another at 573 nm (yellow region) resulting from the 4F₉/₂ → 6H₁₃/₂ transition. These blue and yellow emissions suggest potential applications in solid‐state lighting, particularly for mercury‐free excitation sources. Rare earth–doped Eu3+/Dy3+ materials exhibit highly efficient PL properties, making them suitable candidates for white light‐emitting diodes (LEDs) or other solid‐state lighting phosphors.
Recent advances of nanomaterials in imaging liver fibrosis
Authors: Cui Jin , Zhang Shuxuan , Xu Xueli , Ren Ke , Dong Mengzhen , Nie Zhaokun , Xu Yang , Dai Xiaohui , Xu Peng , Sun Shuo , Zhao Xinya , Sun Xiao 
Published: October 2024

AbstractLiver fibrosis is a pathological process resulting from prolonged exposure to various injury factors. It is characterized by the abnormal proliferation and activation of hepatic stellate cells and excessive deposition of extracellular matrix. If left untreated, it can progress to cirrhosis, liver failure, and even liver cancer. There is currently no efficient and accurate clinical diagnostic method for early liver fibrosis. Therefore, there is an urgent need to address the challenge of accurate staging and early diagnosis of liver fibrosis in clinical practice. Recently, nanomaterials have demonstrated significant potential for enhancing the diagnosis of liver fibrosis. Nanomaterials possess the ability to precisely identify and target the microenvironment associated with liver fibrosis. By enhancing their enrichment in the target area, nanomaterials can improve imaging contrast of fibrosis lesions in the liver, thereby enabling accurate diagnosis of liver fibrosis. Accordingly, this review delves into the latest research and advancements concerning nanomaterials in liver fibrosis diagnosis.
Improvements in Sleep Quality in Patients With Major Depressive and Generalized Anxiety Disorders Treated With Individualized, Parcel‐Guided Transcranial Magnetic Stimulation
Authors: Tang Si Jie , Holle Jonas , Mor Sirjan , Dadario Nicholas B. , Ryan Mark , Teo Charles , Sughrue Michael , Yeung Jacky 
Published: October 2024

ABSTRACTIntroductionPoor quality sleep has often been cited as a cause of lowered quality of life in patients with affective disorders such as major depressive disorder (MDD) and generalized anxiety disorder (GAD). As sleep and affective disorders are affected by multi‐network interactions, we hypothesize that the modulation of the central executive network (CEN), salience, and default mode networks (DMNs) through individualized repetitive transcranial magnetic stimulation (rTMS) may improve sleep and quality of life.MethodsA retrospective analysis from 2020 to 2023 was conducted in patients with affective disorders at Cingulum Health. Multiple targets were selected based on anomalies detected from individual, functional connectivity networks from a machine‐learning connectivity software. rTMS was conducted with accelerated continuous or intermittent theta burst stimulation (TBS) based on the anomaly detected. Pittsburgh Sleep Quality Index (PSQI), EuroQol (EQ5D), Beck's Depression Inventory (BDI), and the General Anxiety Disorder‐7 (GAD‐7) questionnaires were administered prior to, after, and at follow‐up of rTMS.ResultsTwenty‐seven patients were identified, and the most common diagnoses were MDD (41%) or MDD with GAD (41%). All patients had at least one rTMS target in the CEN. The most common target (19 patients) was L8Av in the dorsolateral prefrontal cortex (dlPFC). Patients experienced significant improvements in sleep, quality of life, depressive, and anxiety symptoms after rTMS and during follow‐up. Improvements in sleep correlated with quality of life at follow‐up.ConclusionThis study suggests that personalized, parcel‐guided rTMS is safe and may provide sustained improvements in sleep, quality of life, and affective symptoms for patients with affective disorders.
Unveiling the role of sustainability practices, co‐innovation and entrepreneurial orientation on SMEs performance: An empirical study in developing country
Authors: Do Hai‐Ninh , Do Ngoc Bich , Nguyen Tra My 
Published: October 2024

AbstractThe emergence of climate change calls for the high‐intensity adoption of sustainability practices in all business actors, especially small‐and‐medium enterprises (SMEs). Yet the adoption of such practices remains lag far lower than developed nations. This article examines the relationship between sustainability practices, a firm's strategic movements towards co‐innovation and entrepreneurial orientation, and SMEs performance. Using quantitative data from questionnaires, a total of 450 SMEs in Vietnam participated in this research. The results indicate two crucial findings. First, economic and social sustainability practices enable technological innovation and innovation outcomes through co‐innovation and entrepreneurial orientation. Second, the effectiveness of technological innovation on SMEs performance is examined in a developing country context. These findings will provide empirical evidence for SMEs and corporations in developing countries to craft sustainable orientations and practices to aid the Sustainable Development Goals.