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Molecule configurations modulate packing array and charge transfer in cocrystal engineering

science China Chemistry 2024年第2期67卷 512-516页

作者： Shenglong An Mengyuan Qiao Xin Jin Xuanying Chen Jianhua Su Lifang Guo Zhiyun Zhang Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CentreFrontiers Science Center for Materiobiology and Dynamic ChemistryEast China University of Science&TechnologyShanghai200237China

Organic cocrystal as an emerging assembly strategy has received increasing attention in constructing multiple functional materials,through continually screening suitable constituent monomers or changing their stoichiometry ***,the role of molecule configuration in the cocrystal field is rarely explored despite the fascinating potential in regulating the packing *** this study,the N,N′-diphenyl-5,10-dihydrophenazine derivatives(DPPs) with the flexible scaffold and different methyl substitutions are selected as the donors bearing various molecular *** a simple collaborative way,a series of cocrystals based on DPPs and OFN(octafluoronaphthalene) are fabricated,exhibiting two self-adaptive molecular stacking arrays.X-ray crystallographic analysis and theoretical calculation unveil their different π···π interactions and charge transfer characters,leading to the significant emission redshift up to 125 nm compared with individual *** a result,controllable molecule stacking structure,tunable emission,and charge transfer properties can be *** study provides a new perspective to reveal the structure-property relationships at the molecular level by controlling the molecule configuration in cocrystal engineering,contributing to the development of cocrystal theoretical physics and organic functional materials.

关键词： cocrystals molecular configuration self-adaptive packing mode charge transfer

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n-Type Carbon Nanotubes Doped by Cross-Linked Organic Superbase for Stable Thermoelectric Materials

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Energy Material Advances 2024年第1期5卷 243-251页

作者： Mayuko Nishinaka Qingshuo Wei Yasuko Koshiba Shohei Horike Department of Chemical Science and Engineering Graduate School of EngineeringKobe UniversityKobe 657-8501Japan Nanomaterials Research Institute National Institute of Advanced Industrial Science and Technology(AIST)Tsukuba 305-8565Japan Graduate School of Pure and Applied Science University of Tsukuba1-1-1 TennodaiTsukuba 305-8577Japan Research Center for Membrane and Film Technology Kobe UniversityKobe 657-8501Japan Center for Environmental Management Kobe UniversityKobe 657-8501Japan

Carbon nanotubes(CNTs)are emerging as promising platforms for organic thermoelectric(TE)***,the poor stability of n-doped states often presents a problem for the long-term operation of p-n junction TE *** this study,we synthesized a cross-linked organic superbase,2TBD-C10,as a dopant to create n-type CNTs that are resistant to air,heat,and *** comparing the stability of 2TBD-C10-doped CNTs with those doped by a conventional superbase(TBD),we found that the enhanced stability could be attributed to the unique molecular structure of *** structure aids in effective adsorption on the CNT surfaces through multiple points,reduces volatility because of increased molecular weight,and suppresses water adsorption owing to the presence of hydrophobic alkyl *** results of our study demonstrate that tailoring the primary molecular structures of dopants can remarkably improve the stability of doped states in *** stable n-type materials were integrated into all-CNT TE modules,achieving good-to-excellent performance(power output of approximately 35μW from a temperature difference of approximately 65°C),making them suitable for powering wireless sensors and green light-emitting diodes.

关键词： p n junction modules carbon nanotubes thermoelectric materials organic superbase molecular structure hydrophobic alkyl chains carbon nanotubes cnts n type doping

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Bifunctionally Hydrophobic MOF-Supported Platinum Catalyst for the Removal of Ultralow Concentration Hydrogen Isotope

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Energy & Environmental Materials 2025年第2期8卷 140-150页

作者： Huiryung Heo Jeong-un Jang Euna Jeong Hyung-Ju Kim Young Jin Kim Chan Woo Park Jungseob So Dong-Yeun Koh Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141Korea Decommissioning Technology Division Korea Atomic Energy Research InstituteDaejeon 34057Korea Department of Chemical Engineering and Applied Chemistry Chungnam National UniversityDaejeon 34134Korea Department of Environmental Engineering Kyungpook National UniversityDaegu 41566Korea CO_(2)&Energy Research Center Korea Research Institute of Chemical Technology(KRICT)Daejeon 34114Korea Saudi Aramco-KAIST CO_(2)Management Center Daejeon 34141Korea

Water often presents significant challenges in catalysts by deactivating active sites,poisoning the reaction,and even degrading composite *** challenges are amplified when the water participates as a reactant and is fed as a liquid phase,such as trickle bed-type reactors in a hydrogen-water isotope exchange(HIE)*** key balance in such multiphase reactions is the precise control of catalyst design to repel bulk liquid water while diffusing water ***,a platinum-incorporated metal-organic framework(MIL-101)based bifunctional hydrophobic catalyst functionalized with long alkyl chains(C_(12),dodecylamine)and further manufactured with poly(vinylidene fluoride),Pt@MIL-101-12/PVDF,has been developed which can show dramatically improved catalytic activity under multi-phase reactions involving hydrogen gas and liquid ***@MIL-101-12/PVDF demonstrates enhanced macroscopic water-blocking properties,with a notable reduction of over 65%in water adsorption capacity and newly introduced liquid water *** exhibiting a negligible increase in mass transfer resistance,i.e.,bifunctional *** catalytic activity,evaluated via HIE reaction,and its durability underscore the impact of bifunctional *** situ DRIFTS analysis elucidates water adsorption/desorption dynamics within the catalyst composite,highlighting reinforced water diffusion at the microscopic level,affirming the catalyst's bifunctionality in different length *** demonstrated radiation resistance,Pt@MIL-101-12/PVDF emerges as a promising candidate for isotope exchange reactions.

关键词： bifunctional hydrophobiccatalyst hydrogen-waterisotopeexchange hydrophobic modification metal-organic framework tritiumremoval

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Characterization of Sub-Optical-Wavelength Structures through Optically Opaque Films Using Picosecond Ultrasonics

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Nano Letters 2025年第22期25卷 8909-8914页

作者： Illienko, Maksym Chaudhary, Komal Velsink, Matthias C. Witte, Stefan Advanced Research Center for Nanolithography Science Park 106 Amsterdam 1098 XG Netherlands Department of Imaging Physics Faculty of Applied Sciences Delft University of Technology Lorentzweg 1 Delft 2628 CK Netherlands

Periodic arrays of nanostructures form an important building block of modern integrated circuits and photonic devices. Functionality of such devices is often critically dependent on the detailed structure. Moreover, multistep lithographic processing requires accurate metrology tools to characterize device morphology noninvasively, often after the deposition of additional layers of material. Here we show that ultrafast picosecond ultrasonics enables the accurate characterization of periodic structures below optically opaque thin films. By optically generating and detecting ultrahigh-frequency ultrasound at the surface of the film, we quantitatively characterize the main features of subsurface gratings with line widths down to 100 nm. We find that the acoustic diffraction is sensitive to the shape of the grating lines on the scale of tens of nanometers. © 2025 The Authors. Published by American Chemical Society.

关键词： acoustic diffraction defect detection optical metrology picosecond ultrasonics subwavelength structures ultrafast photoacoustics

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Segregation behaviors in{101^(-)1}compressive twin boundaries of Mg-RE alloy under deformation at room temperature

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Journal of Magnesium and Alloys 2025年第1期13卷 330-337页

作者： Yujie Cui Lili Guo Yunwei Gui Kenta Aoyagi Haotian Tong Qinqin Wei Fangzhou Liu Yuichiro Hayasaka Akihiko Chiba Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Key Laboratory for Advanced Materials Processing(MOE) University of Science and Technology BeijingBeijing 100083China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Institute for Materials Research Tohoku University2-1-1 KatahiraAoba-kuSendaiMiyagi 980-8577Japan Department of Materials Science and Engineering Jilin University5988 Renmin StreetChangchunJilin 130025China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China The Electron Microscopy Center Tohoku UniversitySendai 980-8577Japan

Solute atoms and precipitates significantly influence the mechanical properties of Mg *** studies have mainly focused on the segregation behaviors of Mg alloys after *** this study,we investigated the segregation behaviors of an Mg-RE alloy under *** found that the enrichment of solute atoms occurred in{101^(-)1}compressive twin boundaries under compression at 298 K without any annealing in an Mg-RE alloy by scanning transmission electron microscopy and energy-dispersive X-ray *** segregated solutes and precipitates impeded the twin growth,partially contributing to the formation of small-sized{101^(-)1}compressive *** research indicates the twin boundaries can be strengthened by segregated solutes and precipitates formed under deformation at room temperature.

关键词： Magnesium alloys Compression test Scanning/transmission electron microscopy(STEM) Segregation Twin boundaries

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Multi-millijoule terahertz emission from laser- wakefield-accelerated electrons

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Light(science & Applications) 2023年第2期12卷 248-258页

作者： Taegyu Pak Mohammad Rezaei-Pandari Sang Beom Kim Geonwoo Lee Dae Hee Wi Calin loan Hojbota Mohammad Mirzaie Hyeongmun Kim Jae Hee Sung Seong Ku Lee Chul Kang Ki-Yong Kim Center for Relativistic Laser Science Institute for Basic ScienceGwangju 61005Korea Department of Physics and Photon Science Gwangju Institute of Science and Technology(GIST)Gwangju 61005Korea Laser and Plasma Research Institute Shahid Beheshti UniversityTehranIran Advanced Photonics Research Institute GISTGwangju 61005Korea Institute for Research in Electronics and Applied Physics and Department of Physics University of MarylandCollege ParkMaryland 20742USA

High-power terahertz radiation was observed to be emitted from a gas jet irradiated by 100-terawatt-class laser pulses in the laser-wakefield acceleration of *** emitted terahertz radiation was characterized in terms of its spectrum,polarization,and energy dependence on the accompanying electron bunch energy and charge under various gas target *** a nitrogen target,more than 4 mJ of energy Was produced at<10 THz with a laser-to-terahertz conversion efficiency of~0.15%.Such strong terahertz radiation is hypothesized to be produced from plasma electrons accelerated by the ponderomotive force of the laser and the plasma wakefelds on the time scale of the laser pulse duration and plasma *** model is examined with analytic calculations and particle-in-cell simulations to better understand the generation mechanism of high-energy terahertz radiation in laser-wakefield acceleration.

关键词： laser polarization acceleration

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microRNA-2184 orchestrates Mauthner-cell axon regeneration in zebrafish via syt3 modulation

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Journal of Genetics and Genomics 2024年第9期51卷 911-921页

作者： Xinghan Chen Yueru Shen Zheng Song Xinliang Wang Huaitong Yao Yuan Cai Zi-Ang Zhao Bing Hu Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of ChinaHefeiAnhui 230026China The First Affiliated Hospital of USTC Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui 230026China Center for Advanced Interdisciplinary Science and Biomedicine of IHM Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui 230026China

MicroRNAs(miRNAs)play a significant role in axon regeneration following spinal cord ***,the functions of numerous miRNAs in axon regeneration within the central nervous system(CNS)remain largely ***,we elucidate the positive role of microRNA-2184(miR-2184)in axon regeneration within zebrafish Mauthner cells(M-cells).The upregulation of miR-2184 in a single M-cell can facilitate axon regeneration,while the specific sponge-induced silencing of miR-2184 leads to impeded *** show that syt3,a downstream target of miR-2184,negatively regulates axon regeneration,and the regeneration suppression modulated by syt3 depends on its binding to Ca^(2+).Furthermore,pharmacological stimulation of the cAMP/PKA pathway suggests that changes in the readily releasable pool may affect axon *** data indicate that miR-2184 promotes axon regeneration of M-cells within the CNS by modulating the downstream target syt3,providing valuable insights into potential therapeutic strategies.

关键词： Axon regeneration Axon ablation miR-2184 syt3 Readily releasable pool

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advanced Machine Learning Approaches for Breast Cancer Detection with Neutrosophic Sets

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Neutrosophic Sets and Systems 2025年 81卷 273-284页

作者： Elbehiery, Hussam Fathi, Hanaa Eassa, Mohamed Abdelhafeez, Ahmed Abdellah, Mohamed Refaat Mahmoud, Hadeer Computer Science Department Faculty of Information System and Computer Science October 6 University Giza12585 Egypt College of Information Technology Amman Arab University Amman Jordan Applied Science Research Center Applied Science Private University Amman Jordan The Department of Computer Science College of Information Technology Misr University for Science and Technology Cairo Egypt Department of Artificial Intelligence Faculty of Computers and Artificial Intelligence Modern University for Technology & Information Cairo Egypt

Breast Cancer (BC) remains a significant health challenge for women and is one of the leading causes of mortality worldwide. Accurate diagnosis is critical for successful therapy and increased survival rates. Recent advances in medical imaging and computational technologies have enabled more precise methods of detecting and evaluating breast cancer. Accurate analysis and diagnosis utilizing medical imaging have developed as essential research topics, providing important help in clinical decision-making for various illnesses, including breast cancer. Machine learning (ML) can accurately predict breast cancer. But the breast cancer data has vague and uncertainty information. So, the neutrosophic sets (NSs) are used in this study to deal with uncertainty data. We convert the original dataset into neutrosophic data with three components such as truth, indeterminacy, and falsity values. Then we applied four ML models with N-data such as logistic regression, gradient boosting (GB), k-nearest neighbor (KNN), and support vector machines (SVM), to improve diagnostic accuracy. Then we compared the ML models with and without using N-data. The results show the logistic regression has higher accuracy with 98.6% with the N-data and 95.80% without N-data. So, the NSs can improve the accuracy of ML models. © 2025, University of New Mexico. All rights reserved.

关键词： Lung cancer

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Microneedle delivery platform integrated with Staphylococcus epidermidis-derived extracellular vesicles-based nanoantibiotics for efficient bacterial infection atopic dermatitis treatment

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Acta Pharmaceutica Sinica B 2025年第4期15卷 2197-2216页

作者： Zhou, Hong Zhang, Shuting Liu, Xinxin Feng, Aiping Chen, Siyuan Liu, Wei National Engineering Research Center for Nanomedicine College of Life Science and Technology Huazhong University of Science and Technology Wuhan 430074 China Department of Dermatology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430074 China Research Institute for Biomaterials Tech Institute for Advanced Materials Bioinspired Biomedical Materials & Devices Center College of Materials Science and Engineering Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites Suqian Advanced Materials Industry Technology Innovation Center Nanjing Tech University Nanjing 211816 China

Due to the difficulty of overcoming the abnormal epidermal barriers and addressing S. aureus infections without disrupting indigenous skin microbiota, effective treatment of bacterial infection atopic dermatitis (AD) remains a significant clinical challenge. Skin microbiota-derived extracellular vesicles (EVs) shows protentional for skin disease treatment, but the lack of antimicrobial activity and limited skin penetration hamper their application in bacterial infection AD treatment. Here, we developed novel nanoantibiotics by loading Lev into S. epidermidis-derived EVs (Lev@SE-EVs), with supreme antimicrobial activity, regulating epidermal immune responses and enhanced epidermal barrier functionality. The nanoantibiotics were further integrated into hyaluronic acid-based microneedle (MN) for efficient transdermal delivery of therapeutic agents and effectively treating bacterial infection in AD. Upon insertion into the skin, the rapidly released Lev@SE-EVs from MN are uptake by S. aureus in a selective manner, fibroblasts, and surrounding immune cells to exert therapeutic effects in the infected dermal layer, resulting in mitigated skin inflammation, reduced S. aureus burden and increased dermis repair. Notably, Lev@SE-EVs induce IL-17A⁺ CD8⁺ T-cell accumulation in the skin in an unrelated inflammation manner, which may represent heterologous protection. This EVs-integrated MN assisted Lev@SE-EVs to alleviate skin inflammation, repair skin, and provide an effective and safe therapeutic approach for bacterial infection AD treatment. © 2025 The Authors

关键词： Atopic dermatitis Bacterial infection Extracellular vesicles Microneedle Nanoantibiotics Skin microbiota Staphylococcus aureus Staphylococcus epidermidis

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Overcoming bandwidth limitations in space-coiled acoustic metamaterials through inclined perforated plate design

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Chinese Physics B 2025年第1期34卷 374-379页

作者： Jixin Liu Fengmin Wu Ting Li Junjun Wang Xinye Zou Dong Zhang Department of Applied Physics School of ScienceHarbin University of Science and TechnologyHarbin 150080China Key Laboratory of Modern Acoustics(MOE) Department of PhysicsCollaborative Innovation Center of Advanced MicrostructureNanjing UniversityNanjing 210093China Laboratory of Solid State Microstructures Nanjing UniversityNanjing 210093China

Traditional space-coiled acoustic metamaterials have been widely used in the fields of low-frequency sound absorption and noise ***,they have limitations in terms of low-frequency absorption bandwidth,and the weak coupling effect under complex coiled structures also limits their *** this work,we introduce the composite structure changing the characteristic impedance of acoustic metamaterials to enhance the coupling ***,the perforated plates with inclined design instead of traditional partitions greatly improve the sound *** model and method designed in this paper show significant innovation in enhancing low-frequency absorption performance.

关键词： metamaterials composite structure over-damped modes coupling sound absorption

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