jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Noura El‐Ahmady El‐Naggar | Alaa M. Shiha | Hoda Mahrous | A. B. Abeer Mohammed
Source: Scientific Reports (article, 2024-05-17)
Field: Materials Science — Biomaterials

A sustainable green-approach for biofabrication of chitosan nanoparticles, optimization, characterization, its antifungal activity against phytopathogenic Fusarium culmorum and antitumor activity Chitosan is a natural non-toxic, biocompatible, biodegradable, and mucoadhesive polymer. It also has a broad spectrum of applications such as agriculture, medical fields, cosmetics and food industries. In this investigation, chitosan nanoparticles were produced by an aqueous extract of Cympopogon citratus leaves as a reducing agent. According to the SEM and TEM micrographs, CNPs had a spherical shape, and size ranging from 8.08 to 12.01 nm. CNPs have a positively charged surface with a Zeta potential of + 26 mV. The crystalline feature of CNPs is determined by X-ray diffraction. There are many functional groups, including C꞊C, CH<sub>2</sub>-OH, C-O, C-S, N-H, CN, CH and OH were detected by FTIR analysis. As shown by the thermogravimetric study, CNPs have a high thermal stability. For the optimization of the green synthesis of CNPs, a Face centered central composite design (FCCCD) with 30 trials was used. The maximum yield of CNPs (13.99 mg CNPs/mL) was produced with chitosan concentration 1.5%, pH 4.5 at 40 °C, and incubation period of 30 min. The antifungal activity of CNPs was evaluated against phytopathogenic fungus; Fusarium culmorum. A 100% rate of mycelial growth inhibition was gained by the application of 20 mg CNPs/mL. The antitumor activity of the green synthesized CNPs was examined using 6 different cell lines, the viability of the cells reduced when the concentration of green synthesized CNPs increased, the IC<sub>50</sub> dose of the green synthesized CNPs on the examined cell lines HePG-2, MCF-7, HCT-116, PC-3, Hela and WI-38 was 36.25 ± 2.3, 31.21 ± 2.2, 67.45 ± 3.5, 56.30 ± 3.3, 44.62 ± 2.6 and 74.90 ± 3.8; respectively. Chitosan ; Nuclear chemistry ; Thermogravimetric analysis ; Chemistry ; Biofabrication ; Mycelium ; Zeta potential ; Fusarium culmorum ; Fusarium oxysporum ; Drug delivery ; Nanoparticle ; Materials science ; Nanotechnology ; Fusarium ; Organic chemistry ; Tissue engineering ; Botany ; Biology ; Biomedical engineering ; Medicine Nanocomposite Films for Food Packaging ; Nanoparticles: synthesis and applications ; Essential Oils and Antimicrobial Activity
Authors: Huifang Wang | Weidong Zhao | Ziting Zhang | Wenteng Hou | Leang Yin | Henghan Dai | Xinnan Zhu | Jingbo Zhou | Shaochun Tang | Wei Huang | Gengzhi Sun
Source: Advanced Functional Materials (article, 2024-08-05)
Field: Materials Science — Materials Chemistry

Synergizing Electron and Ion Transports of Ti<sub>3</sub>C<sub>2</sub>T<sub>X</sub> MXene Fiber via Dot‐Sheet Heterostructure and Covalent Ti─C─Ti Cross‐Linking for Efficient Charge Storage and Thermal Management Abstract Ti 3 C 2 T X MXene with the merits of metallic conductivity, superhigh volumetric capacitance, and efficient absorption of the electromagnetic wave is considered a promising building block for fiber fabrication; nevertheless, the simultaneous improvement in electrochemical charge storage and electrical conductivity/thermal management is seldom achieved for MXene‐based fibers due to the contradictory in material design. Typically, aligned and densified packing of MXene fibers is highly desired for an enhanced intra‐/inter‐flake electron transport; however, the narrowed inter‐layer spacing restricts the kinetics of ion diffusion (the intercalation/de‐intercalation of electrolyte ions) and diminishes the accessible active sites for charge storage. Herein, the electron and ion transports of Ti 3 C 2 T X MXene fiber are synergized via a unique dot‐sheet heterostructure covalently bonded by Ti─C─Ti which provides the optimal inter‐layer spacing for rapid ion diffusion and enhances the intra‐/inter‐flake cross‐linking for fast electron transport. As a result, the obtained fiber offers an improved conductivity of 2405 S cm −1 , a desirable capacitance of 1597 F cm −3 , an impressive energy density of 19.8 mWh cm −3 for the assembled supercapacitor, superior Joule heating performance, and a photo‐thermal temperature. These remarkable attributes enable their practical applications in energy‐supply scenarios, such as powering LEDs and wearable thermal management. Materials science ; Heterojunction ; Capacitance ; Fiber ; Supercapacitor ; Optoelectronics ; Ion ; Electrolyte ; Nanotechnology ; Joule heating ; Composite material ; Electrode MXene and MAX Phase Materials ; Advanced Sensor and Energy Harvesting Materials ; 2D Materials and Applications
Authors: Jing Li | Qing Huang | Yajun Yin | Jigang Xu | Yimin Jiang | Wenjie Du
Source: Polymer Composites (article, 2024-07-19)
Field: Materials Science — Polymers and Plastics

The technology and current applications of continuous fiber‐reinforced thermoplastic composites Abstract Because of its inherent properties, the use of thermoplastic composites is expanding in a number of industries, including aerospace, rail transportation, and wind power generation. However, the development of 2D and 3D reinforced thermoplastic composite structures is hampered by the high viscosity and poor wetting of thermoplastic matrices, resulting in their application being mainly limited to nonload‐bearing components. This article provides a comprehensive overview of the technology and current applications of thermoplastic composites, covering materials, preform structures, manufacturing methods, process parameters, performance, and applications. It also provides an outlook on their future development. Highlights Thermoplastic composite has economic and environmental benefits. Summarized the current technology and application of thermoplastic composites. The manufacturing difficulty is the thermoplastic polymers wet fibers. One promising approach to the issue is prepreg technology. Prepreg technology make 3D thermoplastic composites become possible. Materials science ; Composite material ; Thermoplastic composites ; Thermoplastic ; Fiber ; Current (fluid) ; Electrical engineering Natural Fiber Reinforced Composites ; Additive Manufacturing and 3D Printing Technologies ; Epoxy Resin Curing Processes
Authors: Kai Zhang | Xihao Tang | Xi Yang | Shuanghao Wu | Baoying Guo | Rui Xiao | Yao Xie | Sheng‐Run Zheng | Hua‐Wei Jiang | Jun Fan | Wei‐Guang Zhang | Yi Liu | Song‐Liang Cai
Source: ACS Applied Materials & Interfaces (article, 2024-02-20)
Field: Materials Science — Materials Chemistry

Raising the Asymmetric Catalytic Efficiency of Chiral Covalent Organic Frameworks by Tuning the Pore Environment Chiral covalent organic frameworks (COFs) hold considerable promise in the realm of heterogeneous asymmetric catalysis. However, fine-tuning the pore environment to enhance both the activity and stereoselectivity of chiral COFs in such applications remains a formidable challenge. In this study, we have successfully designed and synthesized a series of clover-shaped, hydrazone-linked chiral COFs, each with a varying number of accessible chiral pyrrolidine catalytic sites. Remarkably, the catalytic efficiencies of these COFs in the asymmetric aldol reaction between cyclohexanone and 4-nitrobenzaldehyde correlate well with the number of accessible pyrrolidine sites within the frameworks. The COF featuring nearly one pyrrolidine moiety at each nodal point demonstrated excellent reaction yields and enantiomeric excess (ee) values, reaching up to 97 and 83%, respectively. The findings not only underscore the profound impact of a deliberately controlled chiral pore environment on the catalytic efficiencies of COFs but also offer a new perspective for the design and synthesis of advanced chiral COFs for efficient asymmetric catalysis. Pyrrolidine ; Cyclohexanone ; Aldol reaction ; Catalysis ; Enantioselective synthesis ; Moiety ; Covalent bond ; Enantiomer ; Organocatalysis ; Combinatorial chemistry ; Materials science ; Organic chemistry ; Chemistry Covalent Organic Framework Applications ; Metal-Organic Frameworks: Synthesis and Applications ; Advanced Photocatalysis Techniques
Authors: Linlin Liu | Tursunay Yibibulla | Yang Yang | Sibt ul Hassan | Lizhen Hou | Daitao Kuang | James L. Mead | Lianwen Deng | Shiliang Wang
Source: Microporous and Mesoporous Materials (article, 2024-02-07)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Design and microwave absorption characteristics of porous lamellar hard carbon materials Lamellar structure ; Microwave ; Porosity ; Materials science ; Reflection loss ; Absorption (acoustics) ; Porous medium ; Carbon fibers ; Nanotechnology ; Chemical engineering ; Composite material ; Composite number ; Computer science Electromagnetic wave absorption materials ; Flame retardant materials and properties ; Natural Fiber Reinforced Composites
Authors: Isabel Thiele | Lara Santolin | Klas Meyer | Rainhard Machatschek | U. Bölz | Natalia A. Tarazona | Sebastian L. Riedel
Source: International Journal of Biological Macromolecules (article, 2024-02-17)
Field: Materials Science — Biomaterials

Microbially synthesized poly(hydroxybutyrate-co-hydroxyhexanoate) with low to moderate hydroxyhexanoate content: Properties and applications Plastic pollution is the biggest environmental concern of our time. Breakdown products like micro- and nano-plastics inevitably enter the food chain and pose unprecedented health risks. In this scenario, bio-based and biodegradable plastic alternatives have been given a momentum aiming to bridge a transition towards a more sustainable future. Polyhydroxyalkanoates (PHAs) are one of the few thermoplastic polymers synthesized 100 % via biotechnological routes which fully biodegrade in common natural environments. Poly(hydroxybutyrate-co-hydroxyhexanoate) [P(HB-co-HHx)] is a PHA copolymer with great potential for the commodity polymers industry, as its mechanical properties can be tailored through fine-tuning of its molar HHx content. We have recently developed a strategy that enables for reliable tailoring of the monomer content of P(HB-co-HHx). Nevertheless, there is often a lack of comprehensive investigation of the material properties of PHAs to evaluate whether they actually mimic the functionalities of conventional plastics. We present a detailed study of P(HB-co-HHx) copolymers with low to moderate hydroxyhexanoate content to understand how the HHx monomer content influences the thermal and mechanical properties and to link those to their abiotic degradation. By increasing the HHx fractions in the range of 2 - 14 mol%, we impart an extension of the processing window and application range as the melting temperature (T<sub>m</sub>) and glass temperature (T<sub>g</sub>) of the copolymers decrease from T<sub>m</sub> 165 °C to 126 °C, T<sub>g</sub> 4 °C to -5.9 °C, accompanied by reduced crystallinity from 54 % to 20 %. Elongation at break was increased from 5.7 % up to 703 % at 14 mol% HHx content, confirming that the range examined was sufficiently large to obtain ductile and brittle copolymers, while tensile strength was maintained throughout the studied range. Finally, accelerated abiotic degradation was shown to be slowed down with an increasing HHx fraction decreasing from 70 % to 55 % in 12 h. Copolymer ; Polymer ; Chemistry ; Monomer ; Polyhydroxyalkanoates ; Chemical engineering ; Polymer chemistry ; Materials science ; Organic chemistry biodegradable polymer synthesis and properties ; Microplastics and Plastic Pollution ; Additive Manufacturing and 3D Printing Technologies
Authors: Abeer S. Altowyan | Ümit H. Kaynar | Jabir Hakami | Mustafa Burak Çoban | M. Ayvacıklı | H. Aydın | A. Canımoğlu | N. Can
Source: Sensors and Actuators A Physical (article, 2024-05-12)
Field: Materials Science — Materials Chemistry

Integrating K+ into Eu and Tb doped GdCa4O(BO3)3: A dual study on photoluminescence and structure Phosphor ; Photoluminescence ; Doping ; Dopant ; Ion ; Monoclinic crystal system ; Materials science ; Emission spectrum ; Excitation ; Analytical Chemistry (journal) ; Rietveld refinement ; Photoluminescence excitation ; Luminescence ; Emission intensity ; Spectral line ; Chemistry ; Crystal structure ; Crystallography ; Optoelectronics ; Physics Luminescence Properties of Advanced Materials ; Crystal Structures and Properties ; Nuclear materials and radiation effects
Authors: Xiang Zhang | Dawei Zhang | Chenyang Wei | D.D. Wang | Roy Lavendomme | Shuo Qi | Yu Zhu | Jingshun Zhang | Yongya Zhang | Jiachen Wang | Lin Xu | En‐Qing Gao | Wei Yu | Hai‐Bo Yang | Mingyuan He
Source: Nature Communications (article, 2024-05-04)
Field: Chemistry — Organic Chemistry

Coordination cages integrated into swelling poly(ionic liquid)s for guest encapsulation and separation Coordination cages have been widely reported to bind a variety of guests, which are useful for chemical separation. Although the use of cages in the solid state benefits the recycling, the flexibility, dynamicity, and metal-ligand bond reversibility of solid-state cages are poor, preventing efficient guest encapsulation. Here we report a type of coordination cage-integrated solid materials that can be swelled into gel in water. The material is prepared through incorporation of an anionic Fe<sup>II</sup><sub>4</sub>L<sub>6</sub> cage as the counterion of a cationic poly(ionic liquid) (MOC@PIL). The immobilized cages within MOC@PILs have been found to greatly affect the swelling ability of MOC@PILs and thus the mechanical properties. Importantly, upon swelling, the uptake of water provides an ideal microenvironment within the gels for the immobilized cages to dynamically move and flex that leads to excellent solution-level guest binding performances. This concept has enabled the use of MOC@PILs as efficient adsorbents for the removal of pollutants from water and for the purification of toluene and cyclohexane. Importantly, MOC@PILs can be regenerated through a deswelling strategy along with the recycling of the extracted guests. Swelling ; Ionic liquid ; Cationic polymerization ; Ionic bonding ; Counterion ; Adsorption ; Chemical engineering ; Chemistry ; Polymer chemistry ; Materials science ; Organic chemistry ; Ion ; Catalysis Supramolecular Chemistry and Complexes ; Metal-Organic Frameworks: Synthesis and Applications ; Supramolecular Self-Assembly in Materials
Authors: Alina Cherniienko | Roman Lesyk | Lucjusz Zaprutko | Anna Pawełczyk
Source: Journal of Pharmaceutical Analysis (review, 2024-02-22)
Field: Materials Science — Materials Chemistry

IR-EcoSpectra: Exploring sustainable ex situ and in situ FTIR applications for green chemical and pharmaceutical analysis In various industries, particularly in the chemical and pharmaceutical fields, Fourier transform infrared spectroscopy (FTIR) spectroscopy provides a unique capacity to detect and characterise complex chemicals while minimising environmental damage by minimal waste generation and reducing the need for extensive sample preparation or use of harmful reagents. This review showcases the versatility of <i>ex situ</i> and <i>in situ</i> FTIR applications for substance identification, analysis, and dynamic monitoring. <i>Ex situ</i> FTIR spectroscopy's accuracy in identifying impurities, monitoring crystallisation processes, and regulating medication release patterns improves product quality, safety, and efficacy. Furthermore, its quantification capabilities enable more effective drug development, dosage procedures, and quality control practices, all of which are consistent with green analytical principles. On the other hand, <i>in situ</i> FTIR spectroscopy appears to be a novel tool for the real-time investigation of molecular changes during reactions and processes, allowing for the monitoring of drug release kinetics, crystallisation dynamics, and surface contacts, as well as providing vital insights into material behaviour. The combination of <i>ex situ</i> FTIR precision and <i>in situ</i> FTIR dynamic capabilities gives a comprehensive analytical framework for developing green practices, quality control, and innovation in the chemical and pharmaceutical industries. This review presents the wide range of applications of <i>ex situ</i> and <i>in situ</i> FTIR spectroscopy in chemical, pharmaceutical and medical fields as an analytical green chemistry tool. However, further study is required to fully realise FTIR's potential and develop new applications that improve sustainability in these areas. Chemistry ; In situ ; Fourier transform infrared spectroscopy ; Chemical engineering ; Nanotechnology ; Organic chemistry Advanced Nanomaterials in Catalysis ; Advanced Chemical Sensor Technologies ; Electrochemical sensors and biosensors
Authors: Mengyao Pan | Huijuan Shao | Yue Fan | Jinlong Yang | Jiaxin Liu | Zhongqian Deng | Zhenda Liu | Zhidi Chen | Jun Zhang | Kangfeng Yi | Yucai Su | Dehui Wang | Xu Deng | Fei Deng
Source: Nano-Micro Letters (review, 2024-01-04)
Field: Materials Science — Surfaces, Coatings and Films

Superhydrophobic Surface-Assisted Preparation of Microspheres and Supraparticles and Their Applications Superhydrophobic surface (SHS) has been well developed, as SHS renders the property of minimizing the water/solid contact interface. Water droplets deposited onto SHS with contact angles exceeding 150°, allow them to retain spherical shapes, and the low adhesion of SHS facilitates easy droplet collection when tilting the substrate. These characteristics make SHS suitable for a wide range of applications. One particularly promising application is the fabrication of microsphere and supraparticle materials. SHS offers a distinct advantage as a universal platform capable of providing customized services for a variety of microspheres and supraparticles. In this review, an overview of the strategies for fabricating microspheres and supraparticles with the aid of SHS, including cross-linking process, polymer melting, and droplet template evaporation methods, is first presented. Then, the applications of microspheres and supraparticles formed onto SHS are discussed in detail, for example, fabricating photonic devices with controllable structures and tunable structural colors, acting as catalysts with emerging or synergetic properties, being integrated into the biomedical field to construct the devices with different medicinal purposes, being utilized for inducing protein crystallization and detecting trace amounts of analytes. Finally, the perspective on future developments involved with this research field is given, along with some obstacles and opportunities. Nanotechnology ; Materials science ; Microsphere ; Fabrication ; Evaporation ; Chemical engineering ; Engineering Surface Modification and Superhydrophobicity ; Nanomaterials and Printing Technologies ; Advanced Sensor and Energy Harvesting Materials
Authors: J. Nandhini | M. Bellarmin | Surya Prakash | D Sri | Karthikeyan Elumalai
Source: Food Bioengineering (article, 2024-10-13)
Field: Materials Science — Biomaterials

Advancements in metal oxide bio‐nanocomposites for sustainable food packaging: Fabrication, applications, and future prospectives Abstract The research on metal oxide bio‐nanocomposites for sustainable food packaging has witnessed significant advancements, offering a promising alternative to traditional food packaging materials. This review briefly describes their fabrication techniques, applications, superiority over conventional packaging, challenges, limitations, and potential trends. These new materials are derived by incorporating metal oxide nanoparticles into the biopolymers and show better properties, such as better antimicrobial properties, which are vital in food packaging. The advantages of using metal oxide bio‐nanocomposites over typical food packaging films include enhanced mechanical properties, better moisture and oxygen resistance, bacterial resistance, and light protection. These versatile materials not only serve the purpose of properly preserving the quality and possibly even the wholesomeness of packed food products, but they are also environmentally friendly. Moreover, the review presents current developments and areas of use of metal oxide bio‐nanocomposites in food packaging and it also proposes future developments to meet the modern challenge of the food industry in the development of advanced packaging technologies. Fabrication ; Food packaging ; Nanocomposite ; Nanotechnology ; Oxide ; Materials science ; Metal ; Business ; Engineering ; Metallurgy ; Mechanical engineering ; Medicine Nanocomposite Films for Food Packaging ; biodegradable polymer synthesis and properties ; Nanoparticles: synthesis and applications
Authors: Mikołaj Sadowski | Beata Synkiewicz-Musialska | Karolina Kula
Source: Molecules (article, 2024-01-22)
Field: Chemistry — Organic Chemistry

(1E,3E)-1,4-Dinitro-1,3-butadiene—Synthesis, Spectral Characteristics and Computational Study Based on MEDT, ADME and PASS Simulation The chemistry of conjugated nitrodienes is becoming increasingly popular. These molecules are successfully applied in cycloaddition to synthesize six-membered rings in Diels-Alder reactions. Nitrodienes can be also applied to obtain bis-compounds in [3+2] cycloaddition. Moreover, the presence of a nitro group in the structure provides a possibility of further modification of the products. The simplest symmetrical representative of conjugated nitrodienes is (1<i>E</i>,3<i>E</i>)-1,4-dinitro-1,3-butadiene. Although the first mentions of the compound date back to the early 1950s, the compound has not yet been examined thoroughly enough. Therefore, in this article, a comprehensive study of (1<i>E</i>,3<i>E</i>)-1,4-dinitro-1,3-butadiene has been described. For this purpose, an experimental study including the synthesis process as well as an evaluation of the spectral characteristics has been conducted. So as to better understand the properties of this compound, a computational study of reactivity indices based on MEDT and also an assessment of pharmacokinetics and biological activity according to ADME and PASS methodologies have been made. On this basis, some future application trends of (1<i>E</i>,3<i>E</i>)-1,4-dinitro-1,3-butadiene have been proposed. ADME ; Cycloaddition ; Conjugated system ; Computational chemistry ; Chemistry ; Molecule ; Combinatorial chemistry ; Nitro ; 1,3-Butadiene ; Computer science ; Organic chemistry ; Catalysis Organic Chemistry Cycloaddition Reactions ; Free Radicals and Antioxidants ; Chemistry and Chemical Engineering