jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Xing-Liang Cheng | Shuojiang Liu | Yuling Hu
Source: Biosensors (review, 2024-10-23)
Field: Materials Science — Materials Chemistry

Recent Advances in Nanozyme Sensors Based on Metal–Organic Frameworks and Covalent–Organic Frameworks Nanozymes are nanomaterials that exhibit enzyme-like catalytic activity, which have drawn increasing attention on account of their unique superiorities including very high robustness, low cost, and ease of modification. Metal-organic frameworks (MOFs) and covalent-organic frameworks (COFs) have emerged as promising candidates for nanozymes due to their abundant catalytic activity centers, inherent porosity, and tunable chemical functionalities. In this review, we first compare the enzyme-mimicking activity centers and catalytic mechanisms between MOF and COF nanozymes, and then summarize the recent research on designing and modifying MOF and COF nanozymes with inherent catalytic activity. Moreover, typical examples of sensing applications based on these nanozymes are presented, as well as the translation of enzyme catalytic activity into a visible signal response. At last, a discussion of current challenges is presented, followed by some future prospects to provide guidance for designing nanozyme sensors based on MOFs and COFs for practical applications. Metal-organic framework ; Covalent organic framework ; Covalent bond ; Nanotechnology ; Environmental chemistry ; Biochemical engineering ; Chemistry ; Materials science ; Engineering ; Organic chemistry Advanced Nanomaterials in Catalysis ; Electrochemical sensors and biosensors ; Advanced biosensing and bioanalysis techniques
Authors: Zhiyang Wang | Liyan You | Vaidehi Pandit | Jagrity Chaudhary | Won‐June Lee | Jianguo Mei
Source: JACS Au (article, 2024-05-23)
Field: Materials Science — Polymers and Plastics

Transparent Electrochromic Polymers with High Optical Contrast and Contrast Ratio Colored-to-transmissive electrochromic polymers, known for their wide selection of colors and solution processability, have gained great attraction in thin film electrochromic devices that have entered the market. However, their adoption in the real world is limited due to their limited optical transparency and contrast. This study introduces a new molecular design strategy to overcome these issues. This strategy involves using meta-conjugated linkers (MCLs) and aromatic moieties along polymer backbones, which enable transparent-to-colored electrochromic switching. The MCL interrupts charge delocalization, increasing the band gap in the neutral state and ensuring transparency in the visible region. This innovative approach achieves nearly 100% transmittance in the neutral state and a high absorption in the oxidized state, overcoming residue absorption issues in conventional electrochromic polymers. Simultaneously, the MCL and aromatic moieties enable low oxidation potential, facilitating stable transparent-to-color switching. Polymers developed using this approach exhibit wide color tunability, optical contrast exceeding 93%, and cycling stability over 5000 cycles with less than 3% contrast decay. Our research represents a major advancement in overcoming existing challenges, enabling polymer-based electrochromic devices for visual comfort and energy conservation. Electrochromism ; Electrochromic devices ; Materials science ; Polymer ; Transparency (behavior) ; Colored ; Optoelectronics ; Optical transparency ; Transmittance ; Contrast ratio ; Conjugated system ; Absorption (acoustics) ; High contrast ; Nanotechnology ; Optics ; Computer science ; Chemistry ; Electrode Conducting polymers and applications ; Transition Metal Oxide Nanomaterials ; Perovskite Materials and Applications
Authors: Ming Bao | Klaudia Łuczak | Wojciech Chaładaj | Marriah Baird | Dorota Gryko | Michael P. Doyle
Source: Nature Communications (article, 2024-05-29)
Field: Chemistry — Organic Chemistry

Photo-cycloaddition reactions of vinyldiazo compounds Heterocyclic rings are important structural scaffolds encountered in both natural and synthetic compounds, and their biological activity often depends on these motifs. They are predominantly accessible via cycloaddition reactions, realized by either thermal, photochemical, or catalytic means. Various starting materials are utilized for this purpose, and, among them, diazo compounds are often encountered, especially vinyldiazo compounds that give access to donor-acceptor cyclopropenes which engage in [2+n] cycloaddition reactions. Herein, we describe the development of photochemical processes that produce diverse heterocyclic scaffolds from multisubstituted oximidovinyldiazo compounds. High chemoselectivity, good functional group tolerance, and excellent scalability characterize this methodology, thus predisposing it for broader applications. Experimental and computational studies reveal that under light irradiation these diazo reagents selectively transform into cyclopropenes which engage in cycloaddition reactions with various dipoles, while under thermal conditions the formation of pyrazole from vinyldiazo compounds is favored. Cycloaddition ; Diazo ; Chemoselectivity ; Combinatorial chemistry ; Chemistry ; Functional group ; Reagent ; Photochemistry ; Catalysis ; Organic chemistry Cyclopropane Reaction Mechanisms ; Catalytic Alkyne Reactions ; Catalytic C–H Functionalization Methods
Authors: Bebin Ambrose | Murugan Krishnan | Kalaivanan Ramamurthy | Murugavel Kathiresan
Source: Advanced Photonics Research (article, 2024-06-12)
Field: Materials Science — Polymers and Plastics

Recent Advances in Molecular Engineering for Viologen‐Based Electrochromic Materials: A Mini‐Review Viologens, with their unique redox‐active properties, have garnered increasing attention in the development of electrochromic devices. This review focuses on key strategies in molecular design, synthesis methodologies, and tailored functionalities that have propelled the field forward from 2019 to the present. The convergence of these approaches has led to the construction of viologen‐based electrochromic materials with enhanced performance, stability, and responsiveness. The review not only examines the current state of the field but also explores promising outlooks and opportunities, including tailored applications, environmental sustainability, and integration with emerging technologies. The synergy between molecular engineering and viologen‐based electrochromic materials holds significant promise, shaping the future of dynamic, responsive materials in diverse technological domains. This review serves as a valuable resource for researchers, offering insights into recent breakthroughs and inspiring further advancements in this rapidly evolving field. Viologen ; Electrochromism ; Electrochromic devices ; Materials science ; Nanotechnology ; Computer science ; Chemistry ; Photochemistry ; Electrode ; Physical chemistry Conducting polymers and applications ; Transition Metal Oxide Nanomaterials ; Polyoxometalates: Synthesis and Applications
Authors: Xuerong Huang | Feng Zhao | Zifan Teng | Yingkai Li | Chuang Zhang | Xingxun Liu | Songnan Li | Fengwei Xie
Source: Food Hydrocolloids (article, 2024-07-31)
Field: Materials Science — Biomaterials

Electrospinning of emulsions stabilized by octenylsuccinylated starch and pullulan Pullulan ; Electrospinning ; Starch ; Chemical engineering ; Polymer science ; Modified starch ; Emulsion ; Materials science ; Chemistry ; Polysaccharide ; Polymer ; Composite material ; Food science ; Organic chemistry Electrospun Nanofibers in Biomedical Applications ; Proteins in Food Systems ; Pickering emulsions and particle stabilization
Authors: J. Shida | Kaibo Ma | Harrison W. Toll | Omar Salinas | Xiaojie Ma | Chunte Sam Peng
Source: Nano Letters (article, 2024-03-18)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Multicolor Long-Term Single-Particle Tracking Using 10 nm Upconverting Nanoparticles Single-particle tracking (SPT) is a powerful technique to unveil molecular behaviors crucial to the understanding of many biological processes, but it is limited by factors such as probe photostability and spectral orthogonality. To overcome these limitations, we develop upconverting nanoparticles (UCNPs), which are photostable over several hours at the single-particle level, enabling long-term multicolor SPT. We investigate the brightness of core-shell UCNPs as a function of inert shell thickness to minimize particle size while maintaining sufficient signal for SPT. We explore different rare-earth dopants to optimize for the brightest probes and find that UCNPs doped with 2% Tm<sup>3+</sup>/30% Yb<sup>3+</sup>, 10% Er<sup>3+</sup>/90% Yb<sup>3+</sup>, and 15% Tm<sup>3+</sup>/85% Yb<sup>3+</sup> represent the optimal probes for blue, green, and near-infrared emission, respectively. The multiplexed 10 nm probes enable three-color single-particle tracking on live HeLa cells for tens of minutes using a single, near-infrared excitation source. These photostable and multiplexed probes open new avenues for numerous biological applications. Particle (ecology) ; Nanoparticle ; Nanotechnology ; Tracking (education) ; Materials science ; Term (time) ; Physics Gold and Silver Nanoparticles Synthesis and Applications ; Photoacoustic and Ultrasonic Imaging ; Biosensors and Analytical Detection
Authors: Rong Ding | Yifeng Zhou | Yu‐Chuan Zhang | Hao Chen | Fu‐Rong Zeng | Yutao Wang | Bowen Liu | Yuzhong Wang | Haibo Zhao
Source: Advanced Functional Materials (article, 2024-10-25)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Air‐Pyrolysis Precision Synthesis of Functional Porous Carbon Materials Abstract Carbon materials play a pivo tal role across various advanced applications, yet their synthesis traditionally necessitates inert atmospheres to avert oxidation at high temperatures, thus inflating production costs and resource utilization. Achieving precision synthesis of functional porous carbon materials via air‐pyrolysis remains a formidable challenge. Herein, a streamlined, one‐step lava‐like carbonization approach is introduced enabling the fabrication of porous carbons boasting tailored morphologies (0‐3D), elevated specific surface areas (540.7–1047.6 m 2 g⁻¹), heteroatom doping, and commendable carbon yields (20‐39.1%) through direct pyrolysis within an air environment. Leveraging recyclable boric acid as a reaction medium, a lava‐like flowing protective barrier above 170 °C is engendered that spontaneously creates an oxygen‐free‐like milieu devoid of high pressure or intricate procedures. This boron‐containing lava serves dually as a template and chemical activator, facilitating pore formation and catalyzing porous carbon production. Notably, the method accommodates a spectrum of carbon sources, encompassing sugars, proteins, graphene oxide, and their metal mixtures. The resultant morphologically customizable carbons exhibit excellent performance in areas as diverse as microwave absorption and electrocatalysis. This work pioneers a novel pathway for large‐scale precision synthesis of high‐quality carbon materials via air‐pyrolysis under mild conditions. Materials science ; Pyrolysis ; Porosity ; Carbon fibers ; Chemical engineering ; Porous medium ; Nanotechnology ; Composite material Supercapacitor Materials and Fabrication ; Electromagnetic wave absorption materials ; Graphene research and applications
Authors: Dominika Jerka | Klaudia Bonowicz | Klaudia Piekarska | Şeyda Gökyer | Utku Serhat Derici | Osama Ali Hindy | Barış Burak Altunay | Işıl Yazgan | Kerstin Steinbrink | Konrad Kleszczyński | Pınar Yılgör Huri | Maciej Gagat
Source: ACS Applied Bio Materials (article, 2024-03-23)
Field: Materials Science — Biomaterials

Unraveling Endothelial Cell Migration: Insights into Fundamental Forces, Inflammation, Biomaterial Applications, and Tissue Regeneration Strategies Cell migration is vital for many fundamental biological processes and human pathologies throughout our life. Dynamic molecular changes in the tissue microenvironment determine modifications of cell movement, which can be reflected either individually or collectively. Endothelial cell (EC) migratory adaptation occurs during several events and phenomena, such as endothelial injury, vasculogenesis, and angiogenesis, under both normal and highly inflammatory conditions. Several advantageous processes can be supported by biomaterials. Endothelial cells are used in combination with various types of biomaterials to design scaffolds promoting the formation of mature blood vessels within tissue engineered structures. Appropriate selection, in terms of scaffolding properties, can promote desirable cell behavior to varying degrees. An increasing amount of research could lead to the creation of the perfect biomaterial for regenerative medicine applications. In this review, we summarize the state of knowledge regarding the possible systems by which inflammation may influence endothelial cell migration. We also describe the fundamental forces governing cell motility with a specific focus on ECs. Additionally, we discuss the biomaterials used for EC culture, which serve to enhance the proliferative, proangiogenic, and promigratory potential of cells. Moreover, we introduce the mechanisms of cell movement and highlight the significance of understanding these mechanisms in the context of designing scaffolds that promote tissue regeneration. Vasculogenesis ; Regeneration (biology) ; Angiogenesis ; Cell biology ; Biomaterial ; Tissue engineering ; Context (archaeology) ; Regenerative medicine ; Endothelial stem cell ; Scaffold ; Biology ; Stem cell ; Nanotechnology ; Progenitor cell ; Medicine ; Materials science ; Biomedical engineering ; Cancer research ; In vitro Electrospun Nanofibers in Biomedical Applications ; Tissue Engineering and Regenerative Medicine ; Angiogenesis and VEGF in Cancer
Authors: K.H. Tan | MA Zaed | R. Saidur | Norulsamani Abdullah | Nurul Atiqah Izzati Md Ishak | Jayesh Cherusseri
Source: E3S Web of Conferences (review, 2024-01-01)
Field: Materials Science — Materials Chemistry

Strategic Insights for Bulk Production of MXene: A Review The remarkable versatility of MXene materials has propelled them into the forefront of advanced material science, with applications spanning energy storage, catalysis, water treatment, and electronics. Bulk production of MXene materials is essential to meet the demands of applications, enhance commercial viability, support research efforts, integrate MXene into industries, and drive technological advancements. It is a key step in realizing the full potential of MXene materials and ensuring their widespread use in diverse fields. However, the problem is that MXene synthesis methods, especially those developed at the laboratory scale, face challenges when transitioning to large-scale production. Maintaining the quality, consistency, and yield of MXene materials on a large scale can be complex. The paper provides a comprehensive overview of current synthesis methods, critical parameters that influence bulk production, precursor materials and post-synthesis characterizations, and innovations in scaling up MXene production. The necessary environmental and safety measures were also reviewed. This comprehensive review work is critical for developing the area of MXene bulk manufacturing and has major implications for the larger community. By thoroughly addressing problems, investigating crucial factors, and emphasising breakthroughs in large-scale synthesis, the study serves as a road map for researchers, industry experts, and maybe policymakers. Production (economics) ; Business ; Nanotechnology ; Materials science ; Economics MXene and MAX Phase Materials ; 2D Materials and Applications ; Energy Harvesting in Wireless Networks
Authors: Jamil K Jadoon | Phuong V. Pham
Source: Nanotechnology (article, 2024-08-12)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Hybrid TiO<sub>2</sub>–RGO nanocomposite as high specific capacitance electrode for supercapacitor This study describes the fabrication of composite electrodes comprising TiO<sub>2</sub>and reduced graphene oxide layers using a moderate-temperature hydrothermal method. The morphology, crystalline structure, chemical composition, and optical features of the prepared composites were analyzed by FE-SEM, x-ray diffraction, FTIR, and UV-visible spectroscopy. The cyclic voltammetry (CV) and Nyquist plots were used to assess the electrochemical and impedance responses of the composite electrodes, respectively. The analysis revealed that the incorporation of RGO reduced the TiO<sub>2</sub>bandgap to 3.87 eV 3.02 eV and improved the specific capacitance, enhancing the TiO<sub>2</sub>-RGO electrode's supercapacitive performance. CV studies highlight that the TiO<sub>2</sub>-RGO composite has a high specific capacitance of 152 F g<sup>-1</sup>at a substantially faster scan rate of 25 mV s<sup>-1</sup>in a 1.0 M-KOH dilute electrolyte. These findings confirmed the applicability of the fabricated electrodes as prospective supercapacitor electrodes. Materials science ; Supercapacitor ; Cyclic voltammetry ; Electrode ; Nanocomposite ; Horizontal scan rate ; Graphene ; Capacitance ; Dielectric spectroscopy ; Nyquist plot ; Fourier transform infrared spectroscopy ; Electrolyte ; Chemical engineering ; Composite number ; Oxide ; Electrochemistry ; Nanotechnology ; Composite material Supercapacitor Materials and Fabrication ; Conducting polymers and applications ; Electrochemical sensors and biosensors
Authors: Dasha Mao | Yi Zhou | Yong Yu | Yan Wang | Meng Han | Qiyu Meng | Yao Lu | Jianghe Feng | Minghua Kong | Hailong Yang | Quan Gan | Xiao Xu | Lin Xie | Ghim Wei Ho | Jiaqing He
Source: Joule (article, 2024-09-12)
Field: Materials Science — Materials Chemistry

Scalable and sustainable manufacturing of twin boundary-enhanced flexible Bi0.4Sb1.6Te3 films with high thermoelectric performance Materials science ; Thermoelectric effect ; Scalability ; Boundary (topology) ; Mechanical engineering ; Engineering physics ; Process engineering ; Composite material ; Engineering ; Computer science ; Physics ; Database ; Thermodynamics Advanced Thermoelectric Materials and Devices ; Thermal properties of materials ; Advanced Thermodynamics and Statistical Mechanics
Authors: Shakila Parveen Asrafali | Thirukumaran Periyasamy | Seong‐Cheol Kim | Jaewoong Lee
Source: Materials (article, 2024-06-21)
Field: Materials Science — Surfaces, Coatings and Films

Enhanced Wettability and Adhesive Property of PTFE through Surface Modification with Fluorinated Compounds Polytetrafluoroethylene (PTFE) is prized for its unique properties in electrical applications, but its natural hydrophobicity poses challenges as it repels water and can cause electrical short circuits, shortening equipment lifespan. In this work, the mentioned issue has been tackled by using two different fluorinated compounds, such as perfluorooctanoic acid (PFOA)/perfluorooctanol (PFOL), along with plasma processing to enhance the surface hydrophilicity (water attraction) of PTFE. This method, demonstrated on Teflon membrane, quickly transformed their surfaces from hydrophobic to hydrophilic in less than 30 s. The treated films achieved a water contact angle saturation of around 80°, indicating a significant increase in water affinity. High-resolution C 1s X-ray photoelectron spectroscopy (XPS) confirmed the formation of new bonds, such as -COOH and -OH, on the surface, responsible for enhanced hydrophilicity. Extended plasma treatment led to further structural changes, evidenced by increased intensity in infrared (IR) and Raman spectra, particularly sensitive to vibrations associated with the C-F bond. Moreover, Attenuated Total Reflectance Fourier-Transform Infrared Spectroscopy (ATR-FTIR) showed the formation of surface-linked functional groups, which contributed to the improved water attraction. These findings decisively show that treatment with fluoro-compound along with plasma processing can be considered as a highly effective and rapid method for converting PTFE surfaces from hydrophobic to hydrophilic, facilitating its broader use in various electrical applications. Contact angle ; Attenuated total reflection ; Wetting ; X-ray photoelectron spectroscopy ; Materials science ; Fourier transform infrared spectroscopy ; Raman spectroscopy ; Polytetrafluoroethylene ; Perfluorooctanoic acid ; Chemical engineering ; Adhesive ; Surface modification ; Adhesion ; Polymer chemistry ; Composite material ; Organic chemistry ; Chemistry ; Optics ; Layer (electronics) Surface Modification and Superhydrophobicity ; Advanced Sensor and Energy Harvesting Materials ; Adhesion, Friction, and Surface Interactions
Authors: Shichao Yang | Hanyan Long | Wenwei Chen | Baisheng Sa | Zhiyong Guo | Jingying Zheng | Jiajie Pei | Hongbing Zhan | Yuerui Lu
Source: Advanced Optical Materials (article, 2024-03-06)
Field: Materials Science — Materials Chemistry

Valleytronics Meets Straintronics: Valley Fine Structure Engineering of 2D Transition Metal Dichalcogenides Abstract 2D transition metal dichalcogenides (TMDs) have emerged as a novel class of semiconductors with promising applications in optoelectronics, owing to their rich and tunable valley fine structure, known as valleytronics. Strain engineering in TMDs presents opportunities to tailor their valley fine structures and band alignment, which greatly expands the potential to investigate their intrinsic properties and improve device performance, thus opening a new field of straintronics. In this review, recent advances in strain‐engineered 2D TMDs are summarized, with a focus on new phenomena and applications enabled by precision tuning of valley physics. The underlying mechanisms and connections are delineated between strain‐induced modifications to the valley fine structures based on intravalley, intervalley, and interlayer band alignment in single and heterostructure TMDs. These insights allow targeted strain control strategies to be devised for optimizing optoelectronic characteristics. This review provides perspectives and guidance on the future directions of valley‐straintronics and flexible 2D optoelectronics using TMDs, highlighting the substantial promise of valley‐strain engineering in TMDs for fundamental valley physics studies as well as practical device applications. Valleytronics ; Materials science ; Transition metal ; Nanotechnology ; Engineering physics ; Physics ; Catalysis ; Chemistry 2D Materials and Applications ; Perovskite Materials and Applications ; MXene and MAX Phase Materials
Authors: Liyan Sun | Zhe Li | Jinshuai Lan | Ya Wu | Tong Zhang | Yue Ding
Source: Frontiers in Pharmacology (article, 2024-05-20)
Field: Materials Science — Biomaterials

Better together: nanoscale co-delivery systems of therapeutic agents for high-performance cancer therapy Combination therapies can enhance the sensitivity of cancer to drugs, lower drug doses, and reduce side effects in cancer treatment. However, differences in the physicochemical properties and pharmacokinetics of different therapeutic agents limit their application. To avoid the above dilemma and achieve accurate control of the synergetic ratio, a nanoscale co-delivery system (NCDS) has emerged as a prospective tool for combined therapy in cancer treatment, which is increasingly being used to co-load different therapeutic agents. In this study, we have summarized the mechanisms of therapeutic agents in combination for cancer therapy, nanoscale carriers for co-delivery, drug-loading strategies, and controlled/targeted co-delivery systems, aiming to give a general picture of these powerful approaches for future NCDS research studies. Medicine ; Drug delivery ; Cancer therapy ; Cancer ; Therapeutic index ; Cancer treatment ; Drug ; Pharmacology ; Nanotechnology ; Materials science ; Internal medicine Nanoparticle-Based Drug Delivery ; Nanoplatforms for cancer theranostics ; Graphene and Nanomaterials Applications