bluuebunny/crossref_metadata_2025_split huggingface dataset:
Recent Advances in 2D Wearable Flexible Sensors
Authors: Aftab Sikandar , Al‐Kahtani Abdullah A. , Iqbal Muhammad Zahir , Hussain Sajjad , Koyyada Ganesh 
Published: May 2023

AbstractA variety of wearable technology for detecting human safety as well as environmental conditions have new research directions owing to 2D heterostructured transition metal dichalcogenides (TMDs), graphene (Gr), and reduced graphene‐oxide (rGrO). This in‐depth review article compiles the most recent and effective methods for ultrathin, large‐area flexible sensors with conformal adhesion to human skin that are essential for the development of wearable electronic skins. The results presented in this review aim to design flexible, comfortable wearable devices to monitor users’ continuous health conditions and to show the essential parameters (vital human activity signals such as heartbeat and pulse rate, expressions, and voice recognition) on smartphones in real‐time, allowing users to monitor their health issues in a convenient setting. When used to detect gases, higher selectivity biomolecules, and other organic and inorganic molecules, 2D TMDs can produce superior sensitivities and stability due to their unique and fascinating properties that result from the close interaction between the components. The understanding and control of excitonic effects and associated wearable applications in van der Waals heterostructures over a wide spectral response range is also encouraged. The review concludes by summarizing the present difficulties and opportunities.
Dual‐Phosphorescent Heteroleptic Silver(I) Complex in Long‐Lasting Red Light‐Emitting Electrochemical Cells
Authors: Lipinski Sophia , Cavinato Luca M. , Pickl Thomas , Biffi Giulia , Pöthig Alexander , Coto Pedro B. , Fernández‐Cestau Julio , Costa Rubén D. 
Published: May 2023

AbstractThe design of red‐emitting silver(I) complexes and their implementation in thin‐film lighting are still challenging as (i) their high ligand‐field splitting energy leads to high‐energy emissions with a controversial mechanism (thermally activated delayed fluorescence vs fluorescence/phosphorescence), and (ii) their low electrochemical stability leads to the formation of silver nanoclusters, limiting device stability to a few seconds. Herein, a thoughtful complex design [Ag(xantphos)(deebq)]PF6 combining a large‐bite angle diphosphine ligand (xantphos), a rigid, sterically hindered, π‐extended biquinolin (deebq) is reported. In contrast to prior‐art, this complex possesses (i) efficient red‐emission (λem = 660 nm; photoluminescence quantum yield of 42%) assigned to a thermally equilibrated dual‐phosphorescent emission based on spectroscopic/theoretical studies and (ii) stable reduction behavior without forming silver nanoclusters. This results in the first red light‐emitting electrochemical cells featuring (i) improved stability of two orders of magnitude compared to prior‐art (from seconds to hours) at irradiances of 20 µW cm−2, and (ii) a new degradation mechanism exclusively related to p‐doping as confirmed by electrochemical impedance spectroscopy analysis. Indeed, a multi‐layered architecture to decouple hole injection/transport and exciton formation enables a further 2‐fold enhanced irradiance/stability. Overall, this work illustrates that deciphering the rules for silver(I) complex design for lighting is tricky, but worthwhile.
Exploring the Key Factors of TADF Materials as Sensitizers: Toward High‐performance Triplet Fusion Upconversion
Authors: Tian Ye , Shi Yi‐Zhong , Fan Xiao‐Chun , Wan Shi‐Gang , Wang Xiao‐Mei , Wang Kai , Yu Jia , Zhang Xiao‐Hong , Ye Chang‐Qing 
Published: May 2023

AbstractEmploying metal‐free thermally activated delayed fluorescence (TADF) materials as novel photosensitizers (PSs) for triplet–triplet annihilation upconversion (TTA‐UC) systems has received great attention. Nevertheless, how to choose suitable TADF materials is still a gap that deserves further in‐depth research. Herein, by systematically investigating the three TADF‐based TTA‐UC systems, it is found that TADF materials with multiple resonance (MR) effect are more suitable PSs for high‐performance TTA‐UC systems than those with intramolecular charge transfer (ICT) properties. Therefore, unlike a negligible maximum UC quantum efficiency (ΦUC’, with a theoretical maximum of 100%) of 0.05% for ICT‐1 with a highly twisted molecular structure, MR‐TADF materials MR‐1 and MR‐2 offer superior UC performance with ΦUC’ values above 12.7%. All these results suggest that employing MR‐TADF materials as the PS is the key to achieving efficient TTA‐UC performance.
Mono‐ and Bi‐Dentate Chiral Ligands Lead to Efficient Circularly Polarized Luminescence in 0D and 3D Semiconducting Copper(I) Iodides
Authors: Ji Xiaoqin , Liu Yang , Li Ruiqian , Zhang Zixuan , Zhang Xuanyu , Chen Congcong , Chen Jian , Lu Haipeng , Chen Rui , Mao Lingling 
Published: May 2023

AbstractChiral hybrid Cu(I)‐based iodides with d10 closed shell demonstrate great potential for circularly polarized luminescence (CPL) because of high photoluminescence quantum yield (PLQY). Herein, by incorporating mono‐ or bi‐dentate coordination mode ligands as chiral source, the self‐assembly of four pairs of chiral hybrid Cu(I)‐based iodides, namely, (R/S)‐Cu4I4(Hmpy)4·H2O (R/S‐1), (R/S)‐Cu4I4(3Hpy)4 (R/S‐2), (R/S)‐Cu4I4(2MePI)4 (R/S‐3), and (R/S)‐Cu4I4(3AD)4 (R/S‐4) (where R/S‐Hmpy = R/S‐2‐pyrrolidinemethanol, R/S‐3Hpy = R/S‐3‐hydroxypyrrolidine, R/S‐2MePI = R/S‐2‐methylpiperazine, and R/S‐3AD = R/S‐3‐aminopiperidine), are reported. With the monodentate and bidentate ligands, these materials belong to two different structural types: 0D molecular clusters (R/S‐1, R/S‐2) and 3D porous metal–organic frameworks (R/S‐3, R/S‐4). These materials all crystallize in non‐centrosymmetric space groups containing similar basic Cu4I4 cubane tetramer building units but with different coordination modes. They are also semiconductors, with optical bandgaps ranging from 2.70 to 2.94 eV. The photoluminescence (PL) and circularly polarized luminescence (CPL) emissions are further characterized, where the highest PLQY of ≈95% and CPL dissymmetry factor (glum) of ≈7 × 10−3 are achieved in R/S‐1. This work offers a systematic comparison between different structural types with similar building blocks, bridging by the flexible chiral ligands, and shows that the hybrid copper iodides are highly promising candidates for next‐generation optoelectronics and chiroptics.
Hybridization of Salt Hydrates with Solid–Solid Phase Change Materials: A Novel Pathway to Sorption Thermochemical Materials Manufacturing
Authors: Palacios Anabel , Navarro Maria Elena , Barreneche Camila , Ding Yulong 
Published: May 2023

AbstractMajor advancements are needed in the thermochemical energy storage (TCES) field to bring the technology to commercial levels. The current research strategies are focused on improving heat and mass transfer using different supporting materials to achieve mechanical integrity during storage. However, these strategies are still under development, and they have not overcome the lab scale yet. This work explores novel matrices to expand the material database for TCES composites. Pure structural matrices (cellulose) and novel matrices with storage potential (polymeric solid–solid phase change materials) are selected and combined with three well‐known thermochemical materials (TCMs) (MgSO4·6H2O, SrBr2·6H2O and MgCl2·6H2O), providing evidence of hybridized composites with storage capacity up to 2.4 GJ m−3with a 25–20 wt% of polymeric matrix. The polymer content is found to act as a nucleating agent in the magnesium sulfate crystallization process forming a synthetic monohydrate crystalline phase (Kieserite) and inhibiting the formation of the amorphous phase. The effect of the matrix is proved to induce certain structural deformation or changes not observed in the pure TCM sorption process. This phenomenon has the potential to benefit the stabilization of the TCM, e.g., inhibition of the formation of amorphous phase in magnesium sulfate composites.
CsPbI3 Based All‐Inorganic Perovskite Solar Cells: Further Performance Enhancement of the Electron Transport Layer‐Free Structure from Device Simulation
Authors: Qin Zhiwei , Zhou Hao , Li Site , Xiang Junxin , Guan Ziyu , Zhang Hai , Ma Xinxia , Zhang Meilin , Wu Jiang , Yang Haoyan 
Published: May 2023

Abstract
Cesium lead iodide (CsPbI3) has attracted a great deal of attention as an absorption layer material for perovskite solar cells (PSCs) with high stability and suitable band gap (1.72 eV). In response to the problems of defect‐induced nonradiative compounding and voltage loss caused by the common perovskite layer, the common strategies of interfacial engineering, altering crystal equivalence, and other modifications involve more complex processes and higher fabrication costs. In order to simplify the process and save costs, this work has omitted the electron transport layer (ETL), while still maintaining a high power conversion efficiency (PCE). This work has simulated PSCs with CsPbI3 (electron transport layer free) and have matched Cu2O as the most suitable hole transport layer (HTL) material. By simulating and optimizing the thickness and defect density of perovskite absorption layer and the defect density of interface defect layer (IDL1, IDL2), and determining the most suitable operating temperature, the PCE of the device can reach 18.8%, which is consistent with the experimental data. The asymmetric effect of the interface defect layer obtained in this work is similar to previous research reports. This research provides an economical solution for high‐performance inorganic perovskite solar cells.
Recent Progress in the Emerging Modification Strategies for Layered Oxide Cathodes toward Practicable Sodium Ion Batteries
Authors: Peng Bo , Wan Guanglin , Ahmad Nazir , Yu Lai , Ma Xinyi , Zhang Genqiang 
Published: May 2023

AbstractLow‐cost sodium‐ion batteries (SIBs) have been extensively considered as a supplement or even a replacement for successful lithium‐ion batteries. However, the practical application of SIBs is limited by their energy density and cyclic performance, which are mainly constrained by the cathode side. Therefore, the development of advanced cathode materials is essential for the practical application of SIBs. Among the various cathode materials, layered transition metal oxides (LTMOs) are highly promising candidates due to their compact crystal structure, low‐cost, ease of preparation, and similarities to successful Li‐based LTMOs. Unfortunately, the bottleneck issues faced by Na‐based LTMOs, such as severe phase transitions, sluggish diffusion kinetics, and interface deterioration, pose significant challenges in achieving high‐performance cathodes. In this review, a comprehensive overview and summary of recently reported modification strategies for layered oxides are provided and the structure–function–performance relationship is refined. A perspective on the outlook and development direction for Na‐based LTMOs cathodes is also provided. This review comprehensively explores the modification strategies of Na‐based LTMOs, providing a new horizon for future research on Na‐based LTMOs.
Zinc‐Supported Nitrogen‐Rich Carbon Catalyst for Efficient Carbon Dioxide Cycloaddition with Epoxides under Solvent‐Free Conditions
Authors: Huang Yifei , Fan Limao , Cai Zhenyu , Zhang Lei , Huang Kai 
Published: May 2023

AbstractDeveloping carbon‐based catalyst with both high efficiency and stability presents an enticing prospect for CO2 cycloaddition. In this work, zinc‐loaded nitrogen‐rich carbon catalyst (Zn−NC) was fabricated facilely through the wet impregnation and one‐pot pyrolysis method. The Zn−NC coupled with tetrabutylammonium bromide (TBAB) could achieve the high catalytic efficiency with 93% or 98.1% yield of propylene carbonate (PC) in solvent‐free system under mild condition or traditional heating conditions. Excellent recyclability and versatility of Zn−NC catalyst were also observed. Moreover, the influence of calcination temperature on catalyst structure, composition and catalytic performance were investigated, and the catalytic mechanism of CO2 cycloaddition with Zn−NC and TBAB was legitimately proposed. Herein, this work provided a promising and sustainable insights to prepare high‐efficient and low‐cost carbon‐based catalysts for CO2 conversion.
Catalytic Synthesis of Phthalide Derivatives via Asymmetric Bromolactonization of Stilbene‐type Carboxylic Acids usingN,N‐Dibenzyl Diaminomethylenemalononitrile as Organocatalyst
Authors: Matsushima Yasuyuki , Fukuda Shunsuke , Kobayashi Yusuke , Nezu Hiroyasu , Nakashima Kosuke , Hirashima Shin‐ichi , Miura Tsuyoshi 
Published: May 2023

AbstractThe asymmetric 5‐exobromolactonization of stilbene‐type carboxylic acids could be achieved using aN,N‐dibenzyl diaminomethylenemalononitrile organocatalyst with high yields and excellent enantioselectivities (up to 92% ee) of the corresponding phthalide derivatives. This is the first report where the successful synthesis of the phthalide derivatives as the main product, with high optical purity, could be achieved using the asymmetric 5‐exobromolactonization of the stilbene‐type carboxylic acids with various substituents.
Connectivity Profile for Subthalamic Nucleus Deep Brain Stimulation in Early Stage Parkinson Disease
Authors: Hacker Mallory L. , Rajamani Nanditha , Neudorfer Clemens , Hollunder Barbara , Oxenford Simon , Li Ningfei , Sternberg Alice L. , Davis Thomas L. , Konrad Peter E. , Horn Andreas , Charles David 
Published: May 2023

ObjectiveThis study was undertaken to describe relationships between electrode localization and motor outcomes from the subthalamic nucleus (STN) deep brain stimulation (DBS) in early stage Parkinson disease (PD) pilot clinical trial.MethodsTo determine anatomical and network correlates associated with motor outcomes for subjects randomized to early DBS (n = 14), voxelwise sweet spot mapping and structural connectivity analyses were carried out using outcomes of motor progression (Unified Parkinson Disease Rating Scale Part III [UPDRS‐III] 7‐day OFF scores [∆baseline➔24 months, MedOFF/StimOFF]) and symptomatic motor improvement (UPDRS‐III ON scores [%∆baseline➔24 months, MedON/StimON]).ResultsSweet spot mapping revealed a location associated with slower motor progression in the dorsolateral STN (anterior/posterior commissure coordinates: 11.07 ± 0.82mm lateral, 1.83 ± 0.61mm posterior, 3.53 ± 0.38mm inferior to the midcommissural point; Montreal Neurological Institute coordinates: +11.25, −13.56, −7.44mm). Modulating fiber tracts from supplementary motor area (SMA) and primary motor cortex (M1) to the STN correlated with slower motor progression across STN DBS subjects, whereas fiber tracts originating from pre‐SMA and cerebellum were negatively associated with motor progression. Robustness of the fiber tract model was demonstrated in leave‐one‐patient‐out (R = 0.56, p = 0.02), 5‐fold (R = 0.50, p = 0.03), and 10‐fold (R = 0.53, p = 0.03) cross‐validation paradigms. The sweet spot and fiber tracts associated with motor progression revealed strong similarities to symptomatic motor improvement sweet spot and connectivity in this early stage PD cohort.InterpretationThese results suggest that stimulating the dorsolateral region of the STN receiving input from M1 and SMA (but not pre‐SMA) is associated with slower motor progression across subjects receiving STN DBS in early stage PD. This finding is hypothesis‐generating and must be prospectively tested in a larger study. ANN NEUROL 2023;94:271–284
A Concerted Enzymatic and Bioorthogonal Approach for Extra‐ and Intracellular Activation of Environment‐Sensitive Ruthenium(II)‐Based Imaging Probes and Photosensitizers
Authors: Shum Justin , Lee Lawrence Cho‐Cheung , Chiang Michael Wai‐Lun , Lam Yun‐Wah , Lo Kenneth Kam‐Wing 
Published: May 2023

AbstractIn this article, we report a novel targeting strategy involving the combination of an enzyme‐instructed self‐assembly (EISA) moiety and a strained cycloalkyne to generate large accumulation of bioorthogonal sites in cancer cells. These bioorthogonal sites can serve as activation triggers in different regions for transition metal‐based probes, which are new ruthenium(II) complexes carrying a tetrazine unit for controllable phosphorescence and singlet oxygen generation. Importantly, the environment‐sensitive emission of the complexes can be further enhanced in the hydrophobic regions offered by the large supramolecular assemblies, which is highly advantageous to biological imaging. Additionally, the (photo)cytotoxicity of the large supramolecular assemblies containing the complexes was investigated, and the results illustrate that cellular localization (extracellular and intracellular) imposes a profound impact on the efficiencies of photosensitizers.
Radical Coupling Initiated by Organophosphine Addition to Ynoates
Authors: Cao Jing , Seitz Antonia , Forni José A. , Polyzos Anastasios , Lupton David W. 
Published: May 2023

AbstractDual nucleophilic phosphine photoredox catalysis is yet to be developed due to facile oxidation of the phosphine organocatalyst to the phosphoranyl radical cation. Herein, we report a reaction design that avoids this event and exploits traditional nucleophilic phosphine organocatalysis with photoredox catalysis to allow the Giese coupling with ynoates. The approach has good generality, while its mechanism is supported by cyclic voltametric, Stern–Volmer quenching, and interception studies.
Probability of jet roping in solution blowing of multiple jets
Authors: Balakrishnan Vinod Kumar , Pourdeyhimi Behnam , Yarin Alexander L. 
Published: May 2023

AbstractThis study describes the development and implementation of a lab‐scale four‐needle nosepiece for solution blowing, which enabled the investigation of the roping probability of four polymer jets at different inter‐needle distances and air velocities. The roping probabilities of the four jets were compared to the corresponding roping probabilities of two jets previously established by the present group. The comparison revealed that at the relatively low air velocities (pressures), the four‐jet configuration reduces roping relative to the two‐jet case, which stems from the reduction of the end effect. However, at relatively high air velocities (pressures), turbulent pulsations in the surrounding air become more dominant than the end effect. Accordingly, the four‐jet case reveals a higher probability of roping at higher air velocities (pressures). The findings shed light on the behavior of multiple solution‐blown jets and the impact of the end effect on roping. The severity of roping in the case of four jets at diminishing inter‐needle distances and increasing air velocity was analyzed using recordings of polymer jets in flight by a high‐speed camera and scanning electron microscopy of the corresponding laydown structure.
Enantioselective Intramolecular Decarboxylative C−H Bond Func‐tionalization of Quinazolinones with Amino Acids by Visible Light Photoredox Catalysis
Authors: Sonavane Sameer R. , Mhaske Santosh B. 
Published: May 2023

AbstractThe direct visible light‐mediated intramolecular decarboxylative C−H functionalization of Csp2−H bond adjacent to the nitrogen of a heteroarene has been achieved by iridium‐catalyzed photodecarboxylative radical cyclization. This method offers rapid entry to the synthesis of quinazolinone scaffolds from easily accessible starting materials. The newly developed protocol is mild, operationally simple, oxidant free and general. The utility of this unique Csp3−Csp2 bond forming reaction has been demonstrated in the syntheses of Circumdatin, Sclerotigenine and Benzomalvin A class of quinazolinone natural products and their congeners. The present work represents an interesting example of use of memory of chirality in decarboxylative C−C bond forming enantioselective photoredox reaction.
A note on integrating the Clapeyron equation without neglecting the specific fluid volume
Authors: Swanson Richard M. 
Published: May 2023

AbstractUnder certain approximations, the Clapeyron equation can be integrated to yield a simple exponential relation giving the saturation vapor pressure over a condensed phase as a function of temperature. The derivation usually assumes that the vapor behaves as an ideal gas with constant specific heat, and that the fluid also has constant specific heat. In addition, the specific fluid volume is neglected in comparison with the specific vapor volume. In this case, the Clapeyron equation is separable and readily integrable in closed form. It is shown here that this latter assumption is not required. A simple closed‐form relation between saturation vapor pressure and temperature is derived which includes the condensed phase‐specific volume. Two examples of the use of this result are presented.
Lückenschluss an der Havel
Authors: Richter Torsten , Haas Holger , Dietrich Rolf , Meister Andreas 
Published: May 2023

AbstractDie Staustufe Steinhavel bei OHW‐km 64,3 ist ein wichtiger Bestandteil des Wasserwegs zwischen Berlin, Brandenburg und der Müritz und war noch bis vor Kurzem in einem desolaten Zustand. Daher schrieb das Wasserstraßen‐Neubauamt Berlin (WNA) den Ersatzneubau der Staustufe aus. Insgesamt werden in Steinhavel fast 38 Mio. Euro investiert. Die Planungs‐ARGE Ersatzneubau Staustufe Steinhavel, bestehend aus der IPROconsult GmbH und der PTW Planungsgemeinschaft Tief‐ und Wasserbau GmbH, hat im Auftrag des Wasserstraßen‐Neubauamts Berlin die Ausführungsplanung und Vorbereitung der Vergaben für die Ingenieurbauwerke, Verkehrsanlagen, technische Ausrüstung und Freianlagen sowie die Tragwerksplanung einschließlich Planung des Schleusenbetriebsgebäudes erbracht. Die bauliche Umsetzung erfolgt in drei Baulosen, um bei kontinuierlichem Baubetrieb die Schifffahrt möglichst wenig zu beeinträchtigen. Im Baulos 1 erfolgte die Erschließung der Baustelle und im Baulos 2 wurden unter Beachtung des laufenden Schiffsverkehrs die Vorhäfen grundlegend erneuert und erweitert. Zurzeit laufen die Bauarbeiten des Bauloses 3. Dieses Baulos ist vom Leistungsumfang das größte Los und umfasst die Schleuse, das Wehr mit Fischaufstiegsanlage sowie die Bootsschleppe. Mit der rechtzeitigen Inbetriebnahme der Schleuse nach nur neunmonatiger Bauzeit Ende Mai 2022 wurde bereits eine wichtige Bauetappe umgesetzt. Bis 2025 sollen alle Wasserbauwerke an der Steinhavelmühle bei Fürstenberg erneuert sein.