bluuebunny/crossref_metadata_2025_split huggingface dataset:
Imaging Solvent‐Triggered Gaseous Iodine Uptake on Single Covalent Organic Frameworks
Authors: Wang Qianxi , Yu Haili , Chen Xuecheng , He Yi 
Published: April 2023

AbstractCovalent organic frameworks (COFs) are promising solid absorbents for the treatment of gaseous iodine. However, extensive efforts are still focused on empirical optimizations of specific binding sites and pore structures in COFs, and the chemical control of gaseous iodine uptake on COFs remains challenging. In this study, the chemically triggered sorption properties of COF‐300 for I2 vapors at the single‐particle level with the dark‐field microscope (DFM) are explored. The present operando single‐particle DFM imaging method enables the direct visualization of an adsorption activity transformation from inactive COF‐300 to active solvated COF‐300 toward gaseous I2 vapors. Exploiting the useful reaction information from time‐lapsed DFM images, the tunable adsorption performance of solvated COF‐300 is quantitatively compared by various solvents. The results illustrate that the isopropanol (IPA)‐solvated COF‐300 achieves the optimum adsorption capacity for I2 among the absorbents. The reaction mechanism is elucidated to be the channel size enlargement and modification of internal surface chemistry in the IPA‐solvated COF‐300, producing a stable I2/IPA‐solvated COF‐300 complex after the sorption reaction. The present chemical control of the sorption behavior of COF‐300 revealed by DFM opens up a new fundamental paradigm for rationally developing high‐performance COF‐based absorbents for removing I2 vapors.
Easily Available High‐Performance Organic Solar Cells by Regulating Phenylalkyl Side Groups of Non‐Fused Ring Electron Acceptors
Authors: Wang Junjie , Luan Qingrui , Wang Pengchao , Han Chenyu , Bi Fuzhen , Yang Chunming , Li Yonghai , Bao Xichang 
Published: April 2023

AbstractAlthough non‐fused ring electron acceptors (NFREAs) have received increasing attention due to their relatively low synthetic costs, the achievement of high efficiencies strongly depends on tedious pre‐ or/and post‐treatments to refine the active layers, which in turn greatly increase fabrication complexity and expense of organic solar cells (OSCs). Nowadays most of the available as‐cast devices based on NFREAs are below 12% efficiencies. Herein, phenylalkyl category side groups (CnPh) are employed to construct new NFREAs named BOR‐CnPh (n = 3, 4, and 6), which exhibit inherently decent molecular aggregation and thus exclude additional treatments from device fabrication. The modified alkyl spacers of CnPh side groups not only trigger different aggregation of the acceptors, but also regulate the interaction conformations of donor (D) and acceptor (A), and thus D/A interactions. Encouragingly, the pristine PBDB‐T:BOR‐C4Ph blend delivers intrinsic fibrous networks with dominating face‐on orientation, which yields an optimal efficiency up to 13.12%, and ranks as the highest value among as‐cast OSCs based on NFREAs. This research provides a practical strategy to control molecular aggregations, interactions, and pristine heterojunction morphologies for easily available and high‐performance organic photovoltaics.
Hybrid Cell Membrane‐Functionalized Matrixes for Modulating Inflammatory Microenvironment and Improving Bone Defect Repair
Authors: Qiao Fangyu , Lv Yonggang 
Published: April 2023

AbstractCell membranes from different sources retain the integrity of the original membrane structure and special membrane protein functions. However, the diversity function of membrane surface proteins is underutilized in bone defect repair. The current study creatively prepared a hybrid membrane (HM) (diameter, 92.25 ± 16.47 nm) and coated it on a poly‐ε‐caprolactone (PCL) (diameter, 313.79 ± 4.69 nm) electrospinning membrane for cell membrane‐functionalized matrixes (MFMs) (diameter, 368.76 ± 5.90 nm) preparation. The effects of the HM and MFMs on inflammatory regulation and bone formation are further explored in vitro and in vivo. The results showed that MFMs can regulate macrophage into anti‐inflammatory phenotype and promote alkaline phosphatase secretion and mineralization deposition of mesenchymal stem cells (MSCs) in vitro. The foreign body response is alleviated and bone regeneration is facilitated in rat calvarial critical‐size defect in vivo. The study provides an innovative approach to applicate the cell membrane functions from different sources for immunomodulatory and osteogenic differentiation and provides a promising choice for designing bone repair materials.
Active Thermal Metasurfaces for Remote Heating/Cooling by Mimicking Negative Thermal Conductivity
Authors: Liu Yichao , Chao Kun , Sun Fei , Chen Shaojie , Dai Hongtao , Chen Hanchuan 
Published: April 2023

AbstractRemote temperature control can be obtained by a long‐focus thermal lens that can focus heat fluxes into a spot far from the back surface of the lens and create a virtual thermal source/sink in the background material, around which the temperature field distribution can be remotely controlled by varying the parameters of the thermal lens. However, because of the lack of negative thermal conductivity, existing thermal lenses have extremely short focal lengths and cannot be used to remotely control the temperature field around the virtual thermal source/sink. In this study, a general approach is proposed to equivalently realize materials with negative thermal conductivity using elaborately distributed active thermal metasurfaces (ATMSs). Subsequently, the proposed ATMS is used to implement a novel thermal lens with a long focal length designed using transformation thermodynamics, and finally realize the ATMS with realistic materials and experimentally verify the performance of the designed long‐focus thermal lens (measured focal length of 19.8 mm) for remote heating/cooling. The proposed method expands the scope of the thermal conductivity and provides new pathways to realize unprecedented thermal effects with effective negative thermal conductivity, such as “thermal surface plasmon polaritons,” a thermal superlens, the thermal tunneling effect, and the thermal invisible gateway.
Investigating Charge Transport in Semiconducting Single‐Walled Carbon Nanotube Networks by Charge Modulation Microscopy
Authors: Jiang Mengting , Pecorario Stefano , Zorn Nicolas F. , Zaumseil Jana , Caironi Mario 
Published: April 2023

AbstractSolution‐processed networks of semiconducting single‐walled carbon nanotubes (SWCNTs) hold promise as active layers for large‐scale digital circuits, thermoelectric devices, and healthcare applications. Yet, the combined effects of local network properties and (n,m) species composition need to be addressed to improve the performance and reproducibility of state‐of‐the‐art devices. Charge modulation microscopy (CMM) is used to investigate charge transport in field‐effect transistors (FETs) based on monochiral (6,5) SWCNT networks and multichiral networks containing five semiconducting SWCNT species with different band gaps. By mapping the charge‐modulated signal within the FET channel with sub‐micrometer resolution, the spatial distribution of free carriers and its evolution during the switching of the FET are revealed. The CMM maps provide direct evidence that holes and electrons are transported preferentially through the same percolation paths. A moderate positive correlation between the SWCNT density in the monochiral (6,5) network and the charge density in subthreshold regime is demonstrated. In multichiral networks, the charge transport paths are on average less fragmented when involving low band gap species. CMM emerges as a valuable technique to estimate the size of preferential percolation domains associated with the average distance traversed by charge carriers on SWCNTs of the same chirality before tunneling onto other species.
Enhanced Photoassisted Li‐O2 Battery with Ce‐UiO‐66 Metal‐Organic Framework Based Photocathodes
Authors: Hu Zhaozhao , Yang Yuting , Ye Bin , Hu Xu , Chen Letian , Yu Hanjun , Zhou Yufei , Xie Zhaojun , Zhou Zhen 
Published: April 2023

AbstractLi‐O2 batteries have attracted extensive attention because of their theoretical specific energy equivalent to gasoline, but the poor electrical conductivity of Li2O2 leads to high overpotential, which limits their further development and application. Herein, this work introduces Ce‐UiO‐66, a metal‐organic framework material, as the photocatalyst to reduce the overpotential in the discharging and charging processes. With the simple in situ growth of Ce‐UiO‐66 on carbon cloth as an integrated photocathode, the photoassisted Li‐O2 batteries display decent discharge and charge voltages of 3.1 and 3.6 V, and a lifespan of 160 cycles. Moreover, theoretical calculations have been carried out to understand the band structure, spectroscopy, and photocatalytic property of Ce‐UiO‐66. The findings will encourage an enormous variety of novel MOFs‐based photocathodes for solar energy utilization systems.
ω‐Graphene: A Graphene Allotrope with Desirable Auxeticity and Dirac Cone
Authors: Gao Yan , Liu Yan , Li Da 
Published: April 2023

AbstractA material generally contracts transversely when stretched along one direction. A few materials exhibit unusual auxeticity, which is rarely observed in planar two‐dimensional materials. Herein, a planar graphene allotrope ω‐graphene with a highly negative Poisson's ratio is proposed. ω‐Graphene possesses excellent mechanical properties and exhibits a unique highly negative Poisson's ratio of −0.17 along the crystallographic armchair direction, which is six times larger than that of graphene. Additionally, ω‐graphene exhibits intrinsic semimetallic characteristics with a Dirac cone located at 0.08 eV below the Fermi level. In particular, the Dirac cone of ω‐graphene persists throughout the entire strain range. A highly negative Poisson's ratio and semimetallic properties endow ω‐graphene with excellent potential for practical application to nanomechanical and nanoelectronic devices.
Deafness‐Associated ADGRV1 Mutation Impairs USH2A Stability through Improper Phosphorylation of WHRN and WDSUB1 Recruitment
Authors: Guan Ying , Du Hai‐Bo , Yang Zhao , Wang Yu‐Zhu , Ren Rui , Liu Wen‐Wen , Zhang Chao , Zhang Jia‐Hai , An Wen‐Tao , Li Na‐Na , Zeng Xiao‐Xue , Li Jie , Sun Yi‐Xiao , Wang Yan‐Fei , Yang Fan , Yang Jun , Xiong Wei , Yu Xiao , Chai Ren‐Jie , Tu Xiao‐Ming , Sun Jin‐Peng , Xu Zhi‐Gang 
Published: April 2023

AbstractThe ankle‐link complex (ALC) consists of USH2A, WHRN, PDZD7, and ADGRV1 and plays an important role in hair cell development. At present, its architectural organization and signaling role remain unclear. By establishing Adgrv1 Y6236fsX1 mutant mice as a model of the deafness‐associated human Y6244fsX1 mutation, the authors show here that the Y6236fsX1 mutation disrupts the interaction between adhesion G protein‐coupled receptor V subfamily member 1 (ADGRV1) and other ALC components, resulting in stereocilia disorganization and mechanoelectrical transduction (MET) deficits. Importantly, ADGRV1 inhibits WHRN phosphorylation through regional cAMP‐PKA signaling, which in turn regulates the ubiquitination and stability of USH2A via local signaling compartmentalization, whereas ADGRV1 Y6236fsX1 does not. Yeast two‐hybrid screening identified the E3 ligase WDSUB1 that binds to WHRN and regulates the ubiquitination of USH2A in a WHRN phosphorylation‐dependent manner. Further FlAsH‐BRET assay, NMR spectrometry, and mutagenesis analysis provided insights into the architectural organization of ALC and interaction motifs at single‐residue resolution. In conclusion, the present data suggest that ALC organization and accompanying local signal transduction play important roles in regulating the stability of the ALC.
Bioinspired Polyacrylic Acid‐Based Dressing: Wet Adhesive, Self‐Healing, and Multi‐Biofunctional Coacervate Hydrogel Accelerates Wound Healing
Authors: Wang Lingshuang , Duan Lian , Liu Ga , Sun Jianfeng , Shahbazi Mohammad‐Ali , Kundu Subhas C. , Reis Rui L. , Xiao Bo , Yang Xiao 
Published: April 2023

AbstractPolyacrylic acid (PAA) and its derivatives are commonly used as essential matrices in wound dressings, but their weak wet adhesion restricts the clinical application. To address this issue, a PAA‐based coacervate hydrogel with strong wet adhesion capability is fabricated through a facile mixture of PAA copolymers with isoprenyl oxy poly(ethylene glycol) ether and tannic acid (TA). The poly(ethylene glycol) segments on PAA prevent the electrostatic repulsion among the ionized carboxyl groups and absorbed TA to form coacervates. The absorbed TA provides solid adhesion to dry and wet substrates via multifarious interactions, which endows the coacervate with an adhesive strength to skin of 23.4 kPa and 70% adhesion underwater. This coacervate achieves desirable self‐healing and extensible properties suitable for frequently moving joints. These investigations prove that the coacervate has strong antibacterial activity, facilitates fibroblast migration, and modulates M1/M2 polarization of macrophages. In vivo hemorrhage experiments further confirm that the coacervate dramatically shortens the hemostatic time from hundreds to tens of seconds. In addition, full‐thickness skin defect experiments demonstrate that the coacervate achieves the best therapeutic effect by significantly promoting collagen deposition, angiogenesis, and epithelialization. These results demonstrate that a PAA‐based coacervate hydrogel is a promising wound dressing for medical translation.
In Vivo Fluorescence Molecular Imaging Using Covalent Organic Nanosheets Without Labeling
Authors: Kang Seokmin , Ahn Heesu , Park Chanho , Yun Won Hyeok , Jeong Ju Gyeong , Lee Yong Jin , Kim Dong Wook 
Published: April 2023

AbstractOrganic nanomaterials, as nanocarrier platforms, have tremendous potential for biomedical applications. The authors successfully prepared novel two‐dimensional covalent organic nanosheets (CONs) that can be used as efficient in vivo bioimaging probes by condensing 1,3,5‐triformylglucinol (Tp) and 2,7‐diaminopyrene (Py) to produce TpPy covalent organic frameworks (COFs). TpPy COFs are then subjected to a liquid exfoliation process to obtain TpPy CONs (< 200 nm in size and < 1.7 nm in thickness). TpPy CONs disperse well in water to provide a stable, homogeneous colloidal suspension, which shows favorable photoluminescence properties. Cell viability tests using MDA‐MB‐231 and RAW 264.7 cells reveal that TpPy CONs are low in cytotoxicity. Confocal microscopy reveals clear fluorescent cell images after incubation with TpPy CONs for 24 h, without reduction in cell activity or cytosolic aggregation. To investigate the biological behavior of the TpPy CONs, the authors perform an in vivo fluorescence imaging study using MDA‐MB‐231 tumor‐bearing mice. After intravenous injection of TpPy CONs disperse in phosphate‐buffered saline (PBS), persistent and strong fluorescence signals are observed in the tumor region, with low background signals from normal tissues at 1, 3, 12, and 24 h after injection. Furthermore, these in vivo imaging results concurred with ex vivo biodistribution and histological results.
Novel Dielectric Nanogranular Materials with an Electrically Tunable Frequency Response
Authors: Cao Yang , Kobayashi Nobukiyo , Wang Cheng , Takahashi Saburo , Maekawa Sadamichi , Masumoto Hiroshi 
Published: April 2023

AbstractThe electrical modulation of the functionality of matter is of significant interest in physics and multifunctional tunable electronic device applications. Here, new dielectric materials with nanogranular structures comprised of nano‐sized Co granular metals dispersed in a Mg‐fluoride‐based dielectric matrix are explored. The dielectric relaxation frequency (fr), which represents a sharp decrease in dielectric permittivity in dielectrics, can be tuned by a DC electric field (E). As E increases, the position of fr first shifts to the low‐frequency side and then to the high‐frequency side, achieving a tunable fr in a certain frequency range. The ability to electrically modulate the relaxation frequency may help construct novel tunable frequency filters. The dielectric properties are theoretically examined based on the asymmetric electron tunnelling model that considers the size difference of granular pairs, offering an insightful understanding of the structure‐property relationship in disordered granular solids.
Electrostatic Potential as Solvent Descriptor to Enable Rational Electrolyte Design for Lithium Batteries
Authors: Wu Yanzhou , Hu Qiao , Liang Hongmei , Wang Aiping , Xu Hong , Wang Li , He Xiangming 
Published: April 2023

AbstractArtificial intelligence/machine learning (AI/ML) applied to battery research is considered to be a powerful tool for accelerating the research cycle. However, the development of appropriate materials descriptors is often the first hurdle toward implementing meaningful and accurate AI/ML. Currently, rational solvent selection remains a significant challenge in electrolyte development and is still based on experiments. The dielectric constant (ε) and donor number (DN) in electrolyte design are insufficient. Finding theoretically computable solvent descriptors for evaluating Li+ solvation is a significant step toward accelerating electrolyte development. Here, based on the electrostatic interaction between Li+ and solvent, the electrostatic potential (ESP) of electrolyte solvent is calculated by density functional theory calculations and reveals significant regularity. ESP as a direct and simple solvent descriptor for conveniently designing electrolytes is proposed. The lowest negative electrostatic potential (ESPmin) ensures the nucleophilic capacity of the solvating solvent and the weak ESPmin means decreased solvation energy. Weak ESPmin and strong highest positive electrostatic potential (ESPmax) are the main characteristics of non‐solvating antisolvents. Using the plot of ESPmin – ESPmax strong solvating solvent, weakly solvating solvent, or antisolvent are identified that have been used in electrolyte engineering. This solvent descriptor can boost AI/ML to develop high performance electrolytes.
Resonance‐induced acceleration of theRBNE‐BNEsegregation inversion
Authors: Shao Yufei , Li Anghao , Wang Zaizheng , Sun Min , Huang Decai 
Published: April 2023

AbstractThe experimental and simulation results indicate that the reverse Brazil nut effect (RBNE)‐Brazil nut effect (BNE) segregation inversion happens faster in the circular‐bottom container than that in the flat‐bottom container. The starting location of the sinkage of heavier grains at the top layer is triggered with certain randomness in the latter, whereas it first occurs at either of the lateral edges of the bottom in the former. The occurrence of standing‐wave resonant spots of higher and lower granular temperature accelerates the RBNE‐BNE transition. From the elastic collision model of single grain, the bottom with a larger angle leads to more energy transfer from the vertical direction. The simulation results of a monodisperse granular bed confirm that the circular‐bottom container possesses a higher granular temperature and a lower packing density at the lateral edges of the circular bottom, whereas the flat‐bottom container has a uniform distribution with a standing‐wave period.
Dual‐objective optimization for petroleum molecular reconstruction based on property and composition similarities
Authors: Guan Dong , Cai Guangqing , Zhang Linzhou 
Published: April 2023

AbstractPetroleum molecular reconstruction method can be used to calculate molecular composition from limited analytical data, which is the basis of the molecular‐level process modeling of petroleum refining. However, due to the problem of multiple solutions, it is difficult to obtain accurate and stable molecular compositional models. Therefore, based on the traditional bulk property constraints, composition similarity was proposed and a new petroleum molecular reconstruction method was proposed. In this article, diesel is taken as the study object, and the method was applied to construct various diesel compositional models. The results showed that the models' bulk properties and molecular fraction distribution were consistent with the experimental data. Finally, the method was applied to construct diesel compositional models of an actual refinery. With the reference oil compositional model as the molecular reference data, the problem of accurate construction of compositional models in a long‐term production process without detailed characterization data was solved.
Overview of systematic toxicological analysis strategies and their coverage of substances in forensic toxicology
Authors: Rygaard Karen , Pan Meiru , Nielsen Marie Katrine Klose , Dalsgaard Petur Weihe , Rasmussen Brian Schou , Linnet Kristian 
Published: April 2023

AbstractSystematic toxicological analysis (STA) is the process of using an adequate analytical methodology to detect and identify as many potentially toxicologically relevant compounds as possible in biological samples. STA is an important part of everyday routine work within forensic toxicology, and several methods for STA have frequently been published and reviewed independently. However, the many drugs and other substances involved, as well as the constant emergence of new ones, may pose a major challenge in STA, which often demands a strategy involving multiple analytical methods in parallel. Such strategies have been published and evaluated less frequently despite their relevance in forensic toxicology. This mini‐review briefly summarizes commonly applied methods for STA in forensic toxicology, including gas chromatography–mass spectrometry (GC–MS) and liquid chromatography–MS (LC–MS) methods, and highlights some of their potential pitfalls. Second, it provides an overview of previously reported strategies to conduct STA, including a presentation of the STA strategy applied in the authors’ laboratory. This involves broad drug screening by LC–high‐resolution MS, supported by targeted screening and quantification using LC–tandem MS, headspace (HS)‐GC–MS, HS‐GC–flame ionization detector and other complementary methods. The STA strategy aims to cover as many potentially relevant drugs as possible and seeks to reduce potential pitfalls arising in forensic casework. The review underlines that not every substance can be identified in all circumstances even with a comprehensive STA strategy.
Determination of doxepin hydrochloride in spiked human plasma and capsule after derivatization with eosin Y using resonance Rayleigh scattering, second‐order scattering and frequency doubling scattering methods
Authors: Geogin Jeeva , Patel Madhuri , Teraiya Nishith , Chauhan Ashlesha , Trivedi Priti , Patel Binit , Patel Samir , Patel Archita 
Published: April 2023

AbstractDoxepin hydrochloride (DOX) is a tricyclic antidepressant drug. Three sensitive spectrofluorimetric methods, namely resonance Rayleigh scattering (RRS), frequency doubling scattering (FDS) and second‐order scattering (SOS), were developed and validated for their estimation of doxepin in spiked human plasma and formulation using liquid–liquid extraction method through the formation of an ion pair complex with eosin Y at a pH of 4.5. Various factors affecting fluorescence intensity were optimized, and the reaction kinetics was determined using the Arrhenius equation method. Different scattering methods such as RRS, FDS and SOS were developed at maximum scattering wavelengths λex/λem = 567/567 nm for RRS, 720/360 nm for SOS and 260/520 nm for FDS, respectively. The methods exhibited high sensitivities, and the detection limits for DOX were found to be 0.82, 1.20 and 1.03 ng/ml for RRS, FDS and SOS methods, respectively. The FDS method exhibited the highest sensitivity. The methods were validated using the International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use guidelines and applied to determine DOX in capsule and spiked human plasma samples.