jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Yuanyuan Huang | Xiaofei Han | Li Wang | Renjun Pei
Source: Advanced Optical Materials (article, 2024-06-11)
Field: Materials Science — Materials Chemistry

Assembly‐Driven Aggregation‐Induced Emission of Gold Nanoclusters with Excitation Wavelength‐Dependent Emission and Mechanochromic Property Abstract Metal nanoclusters with aggregation‐induced emission (AIE) characteristics are potential nanomaterial candidates for a wide array of advanced optical applications. In this study, a novel self‐assembly enhanced AIE strategy utilizing 6‐thioguanine (TG)‐protected gold nanoclusters (AuNCs) is fabricated with dual‐stimuli responsive modes of excitation wavelength‐dependent (Ex‐De) emission and mechanochromic properties. The sheetlike structures of AuNCs self‐assembly (AuNC sheets) with typical AIE characteristics are generated in bad solvent owing to the intermolecular hydrogen‐bonds interaction among guanine‐rich moieties of TG ligand. Interestingly, the maximum emission peaks of AuNC sheets are red‐shifted with the increased excitation wavelengths, indicating Ex‐De emission behavior. This phenomenon enables the achievement of wide‐range tunable photoluminescence (PL). In addition, the emission peak of AuNC sheets powders before and after grinding displays the bathochromic shift of 110 nm. The “off–on” switch of Ex‐De emission behavior in AuNC sheets can be manipulated by changing mechanical pressure. It is speculated that the tunable PL behavior of AuNC sheets originates from multiple excited states due to the existence of different Au(I)···Au(I) distances. The self‐assembly‐driven AIE strategy of AuNCs with stimuli‐responsive allochroic modes will facilitate the recording of rewritable information, opening up a new avenue for high‐throughput and multi‐dimensional optical security. Materials science ; Nanoclusters ; Photoluminescence ; Nanomaterials ; Luminescence ; Intermolecular force ; Optoelectronics ; Bathochromic shift ; Nanotechnology ; Photochemistry ; Fluorescence ; Optics ; Molecule ; Chemistry Nanocluster Synthesis and Applications ; Gold and Silver Nanoparticles Synthesis and Applications ; Luminescence and Fluorescent Materials
Authors: Kailiang Tao | Xing Wang | Huan Liu | Wenqing Chen | Yi Sun | Yun‐Qian Zhang | Yuxi Li | Zhenyu Wang | Yang Ye | Hui Xu | Lefu Lan | Hui‐Xiong Dai
Source: Nature Synthesis (article, 2024-10-25)
Field: Chemistry — Organic Chemistry

Multisite modifications of arenes using ketones as removable handles enabled by Pd and norbornene cooperative catalysis Norbornene ; Catalysis ; Chemistry ; Combinatorial chemistry ; Palladium ; Organic chemistry ; Polymerization Catalytic C–H Functionalization Methods ; Catalytic Cross-Coupling Reactions ; Asymmetric Hydrogenation and Catalysis
Authors: Dingyi Shen | Yejun Jin | Zucheng Zhang | Rong Song | Miao Liu | Wei Li | Xin Li | Ruixia Wu | Bo Li | Jia Li | Bei Zhao | Xidong Duan
Source: Precision Chemistry (review, 2024-02-13)
Field: Materials Science — Materials Chemistry

Recent Advances in Spin-coating Precursor Mediated Chemical Vapor Deposition of Two-Dimensional Transition Metal Dichalcogenides Two-dimensional (2D) transition metal dichalcogenides (TMDs) have garnered widespread interest in the scientific community and industry for their exceptional physical and chemistry properties, and great potential for applications in diverse fields including (opto)electronics, electrocatalysis, and energy storage. Chemical vapor deposition (CVD) is one of the most compelling growth methods for the scalable growth of high-quality 2D TMDs. However, the conventional CVD process for synthesis of 2D TMDs still encounters significant challenges, primarily attributed to the high melting point of precursor powders, and achieving a uniform distribution of precursor atmosphere on the substrate to obtain controllable smaple domains is difficult. The spin-coating precursor mediated chemical vapor deposition (SCVD) strategy provides refinement over traditional methods by eliminating the use of solid precursors and ensuring a more clean and uniform distribution of the growth material on the substrate. Additionally, the SCVD process allows fine-tuning of material thickness and purity by manipulating solution composition, concentration, and the spin coating process. This Review presents a comprehensive summary of recent advances in controllable growth of 2D TMDs with a SCVD strategy. First, a series of various liquid precursors, additives, source supply methods, and substrate engineering strategies for preparing atomically thin TMDs by SCVD are introduced. Then, 2D TMDs heterostructures and novel doped TMDs fabricated through the SCVD method are discussed. Finally, the current challenges and perspectives to synthesize 2D TMDs using SCVD are discussed. Chemical vapor deposition ; Nanotechnology ; Materials science ; Transition metal ; Substrate (aquarium) ; Coating ; Heterojunction ; Electrocatalyst ; Catalysis ; Chemistry ; Optoelectronics ; Electrochemistry ; Electrode ; Organic chemistry 2D Materials and Applications ; MXene and MAX Phase Materials ; ZnO doping and properties
Authors: Tanmayi Bathena | Truc Phung | Vijayakumar Murugesan | Konstantinos A. Goulas | Ajay Karakoti | Karthikeyan K. Ramasamy
Source: Journal of CO2 Utilization (article, 2024-06-01)
Field: Materials Science — Materials Chemistry

Transition metal oxides in CO2 driven oxidative dehydrogenation: Uncovering their redox properties Extensive research efforts have been devoted to using greenhouse gas CO2 in upgrading bio-derived feedstock to value-added chemicals using the oxidative dehydrogenation route (CO2-ODH) with low-energy input. To realize the effective deployment of CO2-ODH at an industrial scale, it is imperative to advance the development of robust catalysts that can selectively catalyze C-H over C-C bonds, while simultaneously demonstrating thermodynamic stability to coke formation or sintering. Transition metal-based catalysts exhibit significant potential for being highly selective and reactive in the simultaneous conversion of CO2 and hydrocarbons, owing to their surface reducibility, well-balanced acid/base properties, and dynamic oxygen storage capacity. To stimulate further optimization, it's crucial to discover key design principles, potential trends and descriptors, and effective strategies to fine-tune the catalyst materials. This review comprehensively examines experimental and theoretical research aimed at pinpointing the key catalytic characteristics that affect selectivity in transition metal-based mono, bi, and multimetal oxides. It covers aspects like combinations of active metals and supports, effects of composition and alloying, interfacial structures, adsorption strengths, dynamics of in-situ restructuring, defect creation, surface morphology, and electronic properties, among others. We wrap up by suggesting approaches to overcome present obstacles in catalyst design and reactor technology, potentially bridging the lab-to-industry gap in this domain. Dehydrogenation ; Catalysis ; Transition metal ; Materials science ; Sintering ; Coke ; Adsorption ; Chemical engineering ; Raw material ; Redox ; Nanotechnology ; Chemistry ; Metallurgy ; Organic chemistry Catalytic Processes in Materials Science ; Catalysis and Oxidation Reactions ; Carbon dioxide utilization in catalysis
Authors: Rebecca E. Ginesi | Emily R. Draper
Source: Soft Matter (article, 2024-01-01)
Field: Materials Science — Biomaterials

Methods of changing low molecular weight gel properties through gelation kinetics Low molecular weight gels continue to attract notable interest, with many potential applications. However, there are still significant gaps in our understanding of these systems and the correlation between the pre-gel and final gel states. The kinetics of the gelation process plays a crucial role in the bulk properties of the hydrogel and presents an opportunity to fine-tune these systems to meet the requirements of the chosen application. Therefore, it is possible to use a single gelator for multiple applications. This review discusses four ways to modify the pre-gelled structures before triggering gelation. Such modifications can enhance the material's intended performance, which may result in significant advancements in high-tech areas, such as drug delivery, cell culturing, electronics, and tissue engineering. Kinetics ; Chemistry ; Chemical engineering ; Materials science ; Physics Supramolecular Self-Assembly in Materials ; Lipid Membrane Structure and Behavior ; Polydiacetylene-based materials and applications
Authors: Jiangkun Chen | Yang Guo | Bing Chen | Weilin Zheng | Xin Zhang | Xiaohe Wei | Yaxin Cao | Hao Suo | Feng Wang
Source: Advanced Optical Materials (article, 2024-03-03)
Field: Materials Science — Materials Chemistry

Kinetics‐Tunable Hydrochromic Luminescence Switching in Rb<sub>3</sub>TbF<sub>6</sub>:Eu<sup>3+</sup> Perovskite Abstract Hydrochromic luminescent materials that are responsive to water or moisture have attracted considerable attention owing to their extensive use in sensing and information security. However, fine‐tuning hydrochromic response to water content remains unfulfilled research, posing constraints in the widespread application of hydrochromic luminescence. This study reports a 0D Rb 3 TbF 6 perovskite with highly controllable hydrochromic characteristics. The Rb 3 TbF 6 crystals exhibit a distinct hydrochromic luminescence switching after B‐site doping with Eu 3+ , stemming from Rb 3 TbF 6 to Rb 2 TbF 5 transformation that triggers intra‐crystal Tb 3+ ‐to‐Eu 3+ energy transfer. Through A‐site alkaline metal alloying, the sensitivity of the perovskite to water stimuli is precisely tuned, rendering distinct responses over a wide range of humidity conditions (RH: 1–90% RH) and water levels (v/v: 0.5–55%). As an added benefit, the hydrochromic crystals also show excellent repeatability and photothermal stability. These advances on hydrochromic materials provide exciting opportunities in water detection, humidity sensing, and multi‐level information encryption. Luminescence ; Materials science ; Perovskite (structure) ; Kinetics ; Optoelectronics ; Analytical Chemistry (journal) ; Crystallography ; Physics ; Chemistry Luminescence Properties of Advanced Materials ; Perovskite Materials and Applications ; Radiation Detection and Scintillator Technologies
Authors: Liu Zhang | Jincun Liu | Yaoguang Wei | Dong An | Ning Xin
Source: SSRN Electronic Journal (preprint, 2024-01-01)
Field: Chemistry — Analytical Chemistry

Self-Supervised Learning-Based Multi-Source Spectral Fusion for Fruit Quality Evaluation:A Case Study in Mango Fruit Ripeness Prediction Ripeness ; Quality (philosophy) ; Fusion ; Horticulture ; Mathematics ; Artificial intelligence ; Computer science ; Agricultural engineering ; Machine learning ; Pattern recognition (psychology) ; Ripening ; Biology ; Engineering ; Physics ; Linguistics ; Philosophy Spectroscopy and Chemometric Analyses ; Advanced Chemical Sensor Technologies ; Water Quality Monitoring and Analysis
Authors: Zheng-Xu He | Yuan Gao | Jianbei Qiu
Source: Ceramics International (article, 2024-03-05)
Field: Materials Science — Materials Chemistry

Effect of concentration of Er3+ on up-conversion luminescence in NaYF4 embedded oxy-fluoride glass-ceramics under 1550 nm excitation Materials science ; Fluoride ; Doping ; Photoelectric effect ; Luminescence ; Excitation ; Crystallite ; Analytical Chemistry (journal) ; Laser ; Ceramic ; Optoelectronics ; Optics ; Inorganic chemistry ; Composite material ; Metallurgy ; Chemistry Luminescence Properties of Advanced Materials ; Glass properties and applications ; Solid State Laser Technologies
Authors: Shudan Yang | Kang Lu | Han Xiao
Source: Current Opinion in Chemical Biology (review, 2024-07-09)
Field: Materials Science — Materials Chemistry

Advancements in boron difluoride formazanate dyes for biological imaging Boron ; Nanotechnology ; Chemistry ; Materials science ; Organic chemistry Luminescence and Fluorescent Materials ; Nanoplatforms for cancer theranostics ; Molecular Sensors and Ion Detection
Authors: Yuchen Li | Ji‐Guang Li | Dazheng Zhang | Qihang Pang
Source: Metals (review, 2024-06-07)
Field: Materials Science — Materials Chemistry

Optimization of Mechanical Properties of High-Manganese Steel for LNG Storage Tanks: A Comprehensive Review of Alloying Element Effects High-manganese austenitic steel represents an innovative variety of low-temperature steel used in the construction of liquefied natural gas (LNG) storage tanks. This steel boasts remarkable characteristics such as exceptional plasticity, superior toughness at cryogenic temperatures, and robust fatigue resistance, all while providing significant cost benefits. By utilizing high-manganese steel, the material manufacturing costs can be considerably lowered, simultaneously ensuring the long-term stability and safety of LNG storage tanks. The alloying design is pivotal in attaining superior performance in high-manganese steel. Choosing the right chemical components to control the stacked fault energy (SFE) of high-manganese steel and fine-tuning its structure can further improve the balance between strength and plasticity. Summarizing the advancements in alloying design for high-manganese steel is of great importance, as it offers a foundational dataset for correlating the chemical composition with the performance. Therefore, this paper outlines the deformation mechanisms and the principles of low-temperature brittleness in high-manganese austenitic steel, and from this foundation, it explicates the precise functions of alloying elements within it. This aims to provide a reference for future alloying designs and the industrial deployment of high-manganese steel in LNG storage tanks. Manganese ; Austenite ; Materials science ; Toughness ; Liquefied natural gas ; Storage tank ; Brittleness ; Metallurgy ; Natural gas ; Mechanical engineering ; Engineering ; Waste management ; Microstructure Corrosion Behavior and Inhibition ; Hydrogen embrittlement and corrosion behaviors in metals ; Microstructure and Mechanical Properties of Steels
Authors: Ishara Wijesinghe | Sajani Wimalachandra | Hiran Chathuranga | Ifra Marriam | Buddhika Sampath Kumara | Yashodha Kondarage | Hanisha Ponnuru | Amir Abdolazizi | Mike Tebyetekerwa | Ruixiang Bai | Zhenkun Lei | Tuquabo Tesfamichael | Cheng Yan
Source: European Polymer Journal (article, 2024-05-31)
Field: Materials Science — Materials Chemistry

Recent advances in MXene/elastomer nanocomposites: Synthesis, properties and applications MXene is a novel 2D nanomaterial with excellent mechanical properties, thermal and electrical conductivities, flame retardancy, electromagnetic interference shielding, etc. Owing to these inherent properties, MXene is extensively used as a reinforcing and functional material in elastomer nanocomposites while identifying its capabilities and potential applications. Due to the above reasons, a systematic and rationally well-detailed up-to-date review focused on an overall understanding of MXene/elastomer nanocomposites is needed. Hence, a critical review is provided herein, reporting the status of research on MXene/elastomer nanocomposites, knowledge gaps, and future potential. A bibliometric analysis shows a steady growth of research interest in MXene/elastomer nanocomposites. Also, metadata on reported synthesis processes and pre-surface modifications of MXene indicate the parameters and fine-tuned functionalities of MXene in nanocomposites. The characterization of MXene/elastomer nanocomposites is critically reviewed, focusing on mechanical properties, electrical and thermal conductivities, photothermal and electrothermal conversion, and flame resistance. Finally, the applications of these composites, e.g., electromagnetic interference shielding, sensing, and energy applications, have also been reviewed, emphasizing the existing technical challenges and possible future directions in the field. Nanocomposite ; Elastomer ; Materials science ; Nanomaterials ; Electromagnetic shielding ; Characterization (materials science) ; Composite material ; Polymer nanocomposite ; Nanotechnology MXene and MAX Phase Materials ; Electromagnetic wave absorption materials ; Flame retardant materials and properties
Authors: Yunqing Lu | Mengmeng Li | Yu F | Yuexin Xu | Yongqiang Zhou | Xu Ji | Jin Wang
Source: Optical Materials (article, 2024-06-19)
Field: Chemistry — Inorganic Chemistry

Tuning the optical properties of transparent ZIF-8 thin films by adjusting the crystal morphology Morphology (biology) ; Materials science ; Thin film ; Optical materials ; Optoelectronics ; Crystal (programming language) ; Optics ; Chemical engineering ; Nanotechnology ; Geology ; Computer science ; Physics Metal-Organic Frameworks: Synthesis and Applications ; Nonlinear Optical Materials Research ; Gas Sensing Nanomaterials and Sensors
Authors: Wei Zhang | Yalei Ma | Hongwei Song | Rong Miao | Jie Kong | Meng Zhou
Source: Physical Chemistry Chemical Physics (article, 2024-01-01)
Field: Chemistry — Physical and Theoretical Chemistry

Deciphering the photophysical properties of naphthalimide derivatives using ultrafast spectroscopy Naphthalimide derivatives composed of donor-acceptor type structures hold significant promise across a wide range of applications. Here, the solvent polarity and viscosity controlled excited-state dynamics of a naphthalimide derivative with a donor-acceptor structure were studied using multiple spectroscopic techniques. From the stationary spectroscopic investigations, large Stokes shift and low fluorescence quantum yield were observed with increasing the solvent polarity, suggesting a more polar excited state relative to the ground state, which is evidenced by the Lippert-Mataga relationship. We also observe an enhanced fluorescence with a prolonged lifetime in a more viscous solution due to the restriction of excited-state molecular rearrangement. These observations result from the emerged twisted intramolecular charge transfer (TICT) state. The ultrafast spectroscopy studies further unravel a solvent polarity dependent excited state evolution from the intramolecular charge transfer state to the TICT state, revealing that the TICT state can be populated only in strong polar solvents. Control experiments by tuning the solvent viscosity in ultrafast experiments were employed to verify the excited state molecular rearrangement subsequently. These observations collectively emphasize how fine-tuning the photophysical properties of naphthalimide derivatives can be achieved through strategic manipulation of solvent polarity and viscosity. Ultrashort pulse ; Spectroscopy ; Derivative (finance) ; Photochemistry ; Excited state ; Chemistry ; Physics ; Atomic physics ; Optics ; Quantum mechanics ; Laser Photochemistry and Electron Transfer Studies ; Analytical Chemistry and Sensors ; Spectroscopy and Quantum Chemical Studies
Authors: Binxuan Diao | Fuhao Jiang | Heqing Ye | Rui Wang | Hongjiang Li | Haoran Zhang | Sang Woo Joo | Chenhao Cong | Se Hyun Kim | Xinlin Li
Source: Journal of Colloid and Interface Science (article, 2024-08-16)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Interfacial modulation strategy using poly(3,4-ethylenedioxythiophene)–poly(4-styrenesulfonate) (PEDOT:PSS) and ultrathin two-dimensional metal–organic framework nanosheets for wearable supercapacitors: Solution engineering PEDOT:PSS ; Poly(3,4-ethylenedioxythiophene) ; Conductive polymer ; Supercapacitor ; Materials science ; Chemical engineering ; Modulation (music) ; Electrochromism ; Metal ; Wearable computer ; Nanotechnology ; Electrochemistry ; Polymer ; Chemistry ; Layer (electronics) ; Electrode ; Composite material ; Computer science ; Metallurgy ; Physics Supercapacitor Materials and Fabrication ; Conducting polymers and applications ; Advanced Sensor and Energy Harvesting Materials
Authors: Mariia Kostenko | Yurij Stetsyshyn | Khrystyna Harhay | Yuriy Melnyk | Volodymyr Donchak | Zoriana Gubriy | Milan Kráčalík
Source: Journal of Applied Polymer Science (article, 2024-04-10)
Field: Materials Science — Polymers and Plastics

Impact of the functionalized clay nanofillers on the properties of the recycled polyethylene terephthalate nanocomposites Abstract Polymer nanocomposites, such as polyethylene terephthalate (PET)‐clay systems, leverage intricate interactions between components to fine‐tune their thermal, mechanical, and rheological properties. In our study, we functionalized montmorillonite clay nanofillers (CloisiteNa + ) to fabricate recycled PET‐clay nanocomposites. The nanofillers underwent a three‐step functionalization process, involving the treatment with (3‐Aminopropyl)triethoxysilane (APTES), the grafting of initiating coatings (multifunctional peroxide initiator, [MPI]) onto clay/APTES, and the subsequent fabrication of grafted brushes using poly(butyl methacrylate) (PBMA) or poly(butyl acrylate) (PBA). The functionalization process and the properties of the modified clay were successfully confirmed through Fourier‐transform infrared spectroscopy and thermogravimetric analysis. The fabrication of nanocomposites, incorporating both clay and functionalized clay, influenced the thermal behavior of the composites, whereas the nanofillers had no discernible impact on the flow temperature. The PET and nanocomposites exhibited liquid viscoelastic behavior, with the exception of PET with clay, which displayed shear‐thinning and “rubber‐like” behavior. Rheological curves and x‐ray diffraction (XRD) analysis indicated improved dispersion and compatibility for clay/APTES and clay functionalized with PBA‐grafted brushes within the PET matrix. In some instances, the utilization of functionalized clay resulted in enhanced compatibility and customized properties in PET‐organoclay nanocomposites compared with conventional fillers. These findings bear implications for a broad spectrum of applications involving PET‐organoclay nanocomposites. Nanocomposite ; Polyethylene terephthalate ; Materials science ; Composite material ; Polyethylene ; Polymer science Polymer Nanocomposites and Properties ; Polymer crystallization and properties ; Polymer Nanocomposite Synthesis and Irradiation
Authors: Jayant Nagar | Anupam Shukla
Source: Journal of Power Sources (article, 2024-07-02)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Reduced TiO2 nanotube array electrode based supercapacitor with kilohertz frequency response Supercapacitor ; Electrode ; Nanotube ; Materials science ; Electrode array ; Nanotechnology ; Electrical engineering ; Optoelectronics ; Capacitance ; Carbon nanotube ; Chemistry ; Engineering Supercapacitor Materials and Fabrication ; Conducting polymers and applications ; Advanced Sensor and Energy Harvesting Materials