jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Mahendra D. Shirsat | Tibor Hianik
Source: Journal of Composites Science (article, 2023-11-11)
Field: Chemistry — Electrochemistry

Electrochemical Detection of Heavy Metal Ions Based on Nanocomposite Materials Heavy metal ions (HMIs) have acute toxic effects on health and are dangerous for human existence and the ecosystem. Therefore, their sensitive and selective detection is of great importance. In recent years, various nanocomposite materials have been used by researchers for the detection of HMIs by using various modalities of electrochemical techniques. This review summarizes the recent advances in developing electrochemical sensors based on numerous nanocomposite materials for detecting HMIs. Nanocomposite materials, such as metal–organic frameworks (MOFs), organic conducting polymer (OCPs), carbon nanotubes (CNTs), graphene oxide (GO), graphene/reduced graphene oxide (rGO), graphitic carbon nitride, metal oxide, chitosan, MXenes, metal nanoparticle-based nanocomposites, etc., have been explored by various researchers to improve the sensing properties of electrochemical sensors. This review emphasizes nanocomposite materials’ synthesis and characterization techniques, modalities for HMI detection using electrochemical techniques, and electrochemical sensors. Moreover, this review highlights the development of portable biosensors for detecting HMIs in real-world scenarios, such as environmental monitoring, food safety, and clinical diagnosis. This review also demonstrates the importance of electrochemical sensors based on nanocomposite materials as a reliable, sensitive, and selective tool for detecting HMIs. Nanocomposite ; Graphene ; Materials science ; Nanotechnology ; Oxide ; Carbon nanotube ; Electrochemistry ; Graphitic carbon nitride ; Chemistry ; Photocatalysis ; Electrode ; Metallurgy Electrochemical Analysis and Applications ; Electrochemical sensors and biosensors ; Advanced biosensing and bioanalysis techniques
Authors: Noura El‐Ahmady El‐Naggar | Marwa Eltarahony | E. S. E. Hafez | Shimaa Bashir
Source: Scientific Reports (article, 2023-07-10)
Field: Materials Science — Biomaterials

Green fabrication of chitosan nanoparticles using Lavendula angustifolia, optimization, characterization and in‑vitro antibiofilm activity Chitosan nanoparticles (CNPs) are promising polymeric nanoparticles with exceptional physicochemical, antimicrobial and biological characteristics. The CNPs are preferred for a wide range of applications in the food industry, cosmetics, agriculture, medical, and pharmaceutical fields due to their biocompatibility, biodegradability, eco-friendliness, and non-toxicity. In the current study, a biologically based approach was used to biofabricate CNPs using an aqueous extract of Lavendula angustifolia leaves as a reducing agent. The TEM images show that the CNPs were spherical in shape and ranged in size from 7.24 to 9.77 nm. FTIR analysis revealed the presence of several functional groups, including C-H, C-O, CONH<sub>2</sub>, NH<sub>2</sub>, C-OH and C-O-C. The crystalline nature of CNPs is demonstrated by X-ray diffraction. The thermogravimetric analysis revealed that CNPs are thermally stable. The CNPs' surface is positively charged and has a Zeta potential of 10 mV. For optimising CNPs biofabrication, a face-centered central composite design (FCCCD) with 50 experiments was used. The artificial intelligence-based approach was used to analyse, validate, and predict CNPs biofabrication. The optimal conditions for maximum CNPs biofabrication were theoretically determined using the desirability function and experimentally verified. The optimal conditions that maximize CNPs biofabrication (10.11 mg/mL) were determined to be chitosan concentration 0.5%, leaves extract 75%, and initial pH 4.24. The antibiofilm activity of CNPs was evaluated in‑vitro. The results show that 1500 μg/mL of CNPs suppressed P. aeruginosa, S. aureus and C. albicans biofilm formation by 91.83 ± 1.71%, 55.47 ± 2.12% and 66.4 ± 1.76%; respectively. The promising results of the current study in biofilm inhibition by necrotizing biofilm architecture, reducing its significant constituents and inhibiting microbial cell proliferation encourage their use as natural biosafe and biocompatible anti-adherent coating in antibiofouling membranes, medical bandage/tissues and food packaging materials. Biofabrication ; Chitosan ; Thermogravimetric analysis ; Aqueous solution ; Nanoparticle ; Biocompatibility ; Zeta potential ; Nuclear chemistry ; Chemistry ; Nanotechnology ; Chemical engineering ; Materials science ; Tissue engineering ; Organic chemistry ; Biomedical engineering Nanocomposite Films for Food Packaging ; Nanoparticles: synthesis and applications
Authors: Katherine R. Johnson | Darren M. Driscoll | Joshua T. Damron | Alexander S. Ivanov | Santa Jansone‐Popova
Source: JACS Au (article, 2023-01-25)
Field: Chemistry — Inorganic Chemistry

Size Selective Ligand Tug of War Strategy to Separate Rare Earth Elements Separating rare earth elements is a daunting task due to their similar properties. We report a "tug of war" strategy that employs a lipophilic and hydrophilic ligand with contrasting selectivity, resulting in a magnified separation of target rare earth elements. Specifically, a novel water-soluble bis-lactam-1,10-phenanthroline with an affinity for light lanthanides is coupled with oil-soluble diglycolamide that selectively binds heavy lanthanides. This two-ligand strategy yields a quantitative separation of the lightest (e.g., La-Nd) and heaviest (e.g., Ho-Lu) lanthanides, enabling efficient separation of neighboring lanthanides in-between (e.g., Sm-Dy). Lanthanide ; Ligand (biochemistry) ; Rare earth ; Chemistry ; Selectivity ; Phenanthroline ; Combinatorial chemistry ; Inorganic chemistry ; Ion ; Mineralogy ; Organic chemistry ; Receptor ; Biochemistry Radioactive element chemistry and processing ; Lanthanide and Transition Metal Complexes ; Extraction and Separation Processes
Authors: Hassan El-Ramady | Neama Abdalla | Daniella Sári | Aya Ferroudj | Arjun Muthu | József Prokisch | Zakaria F. Fawzy | Eric C. Brevik | Svein Øivind Sølberg
Source: Agronomy (article, 2023-06-13)
Field: Materials Science — Materials Chemistry

Nanofarming: Promising Solutions for the Future of the Global Agricultural Industry The agricultural sector is a vital source of human well-being that provides the necessities of daily life. A variety of farming systems are utilized in agriculture, such as a wide range of tillage options, no-till, agroforestry, precision farming, organic farming, cover cropping, crop rotations, etc. Each of these farming systems has unique challenges, and nanotechnology has successfully improved on many of them. Agricultural applications of nanotechnology include nanofertilizers, nanopesticides, nanosensors, nanobiotechnology, and nanoremediation. This study focuses on the application of nano-farming technologies to different farming systems. Suggested practices include nano improvement of soil quality, crop nano-protection under biotic stress, nanoremediation of polluted soil and water environments, nanomanagement of agro-wastes, nano-agrochemicals, nano-precision farming, and nanobiotechnology for modern farming. This review also addresses expected problems that may occur due to over application of nanomaterials to farming systems, such as nanopollution and nanotoxicity of agroecosystem compartments. Several dimensions are emphasized in this study, such as green energy, sustainable development, the circular bioeconomy, land biodegradation, pollution, and the one health approach, as essential for the global goals of sustainable development. Nanofarming presents both benefits and obstacles to human life. The exact balance between these benefits and challenges needs more study. Agriculture ; Nanobiotechnology ; Agrochemical ; Environmental science ; Agroforestry ; Integrated farming ; Sustainability ; Business ; Environmental planning ; Agricultural engineering ; Engineering ; Ecology ; Biology Nanoparticles: synthesis and applications
Authors: Yujing Sun | Dongyang Lou | Wei Liu | Zhikun Zheng | Xudong Chen
Source: Advanced Optical Materials (article, 2023-01-15)
Field: Materials Science — Electronic, Optical and Magnetic Materials

SERS Labels for Optical Anticounterfeiting: Structure, Fabrication, and Performance Abstract Developing new anticounterfeit technologies with good robustness, high safety index, strong readability, and low cost is highly demanded but challenging. In recent years, anticounterfeiting labels by surface‐enhanced Raman spectroscopy (SERS) have drawn great attention due to the molecular encoding, highly accurate identification, large coding capacity, and so on. Focusing on several basic elements in SERS anticounterfeiting, the SERS anticounterfeiting labels’ structure, the fabrication strategies, and their performances are summarized and commented in detail based on three main categories of SERS labels (SERS spectra, SERS images, and SERS codes). Moreover, despite the great advances achieved till now, SERS labels for anticounterfeiting still suffer from some limitations. Thus, the current challenges and the perspective of the SERS labels in anticounterfeiting are also discussed, aiming to give a comprehensive understanding and some valid guidelines for the development of SERS labels in anticounterfeiting. Nanotechnology ; Readability ; Surface-enhanced Raman spectroscopy ; Materials science ; Fabrication ; Computer science ; Raman spectroscopy ; Optics ; Medicine ; Raman scattering Gold and Silver Nanoparticles Synthesis and Applications ; Advanced biosensing and bioanalysis techniques ; Innovative Microfluidic and Catalytic Techniques Innovation
Authors: Chao Feng | Tao He | Yuzhi Shi | Qinghua Song | Jingyuan Zhu | Jian Zhang | Zhanshan Wang | Din Ping Tsai | Xinbin Cheng
Source: Laser & Photonics Review (article, 2023-03-23)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Diatomic Metasurface for Efficient Six‐Channel Modulation of Jones Matrix Abstract Multi‐channel modulation of Jones matrix facilitates encoding a variety of different functions in metasurfaces. However, multiple channels are usually accompanied by a high system complexity and a low efficiency. Here, a compact and effective diatomic metasurface platform that can impose the six‐channel modulation of Jones matrix efficiently is proposed. The metasurface consists of two anisotropic nanopillars with exquisitely designed structural sizes and rotation angles with near‐unity transmission. To verify the methodology, the independent regulation of six Jones‐matrix channels is demonstrated, and three nanoprinting images and three holographic images are integrated into a single metasurface. Furthermore, by interleaving two diatomic meta‐atoms operating at two different wavelengths within a super‐pixel, the multiplexing capacity of the Jones matrix is extended to twelve channels, paving the way to a broader exploitation of multi‐functional optical devices in optical communications, data storage and encryption, and so on. Multiplexing ; Matrix (chemical analysis) ; Modulation (music) ; Channel (broadcasting) ; Interleaving ; Computer science ; Holography ; Optics ; Transmission (telecommunications) ; Diatomic molecule ; Physics ; Topology (electrical circuits) ; Telecommunications ; Materials science ; Engineering ; Acoustics ; Electrical engineering Metamaterials and Metasurfaces Applications ; Advanced Antenna and Metasurface Technologies ; Antenna Design and Analysis
Authors: Quan Wang | Tuo Chen | Xiaodong Wang | Yue Zheng | Jiayu Zheng | Gaojie Song | Shuyi Liu
Source: Polymers (review, 2023-10-17)
Field: Materials Science — Polymers and Plastics

Recent Progress on Moisture Absorption Aging of Plant Fiber Reinforced Polymer Composites Plant fiber reinforced polymer matrix composites have attracted much attention in many industries due to their abundant resources, low cost, biodegradability, and lightweight properties. Compared with synthetic fibers, various plant fibers are easy to obtain and have different characteristics, making them a substitute for synthetic fiber composite materials. However, the aging phenomenon of composite materials has been a key issue that hinders development. In natural environments, moisture absorption performance leads to serious degradation of the mechanical properties of composite materials, which delays the use of composite materials in humid environments. Therefore, the effects of moisture absorption performance of plant fiber composite materials on their mechanical properties have been summarized in this article, as well as various treatment methods to reduce the water absorption of composite materials. Materials science ; Composite material ; Composite number ; Moisture ; Absorption of water ; Fiber ; Natural fiber ; Polymer ; Synthetic fiber ; Absorption (acoustics) Natural Fiber Reinforced Composites ; Advanced Cellulose Research Studies ; Electromagnetic wave absorption materials
Authors: Shan Mohanan | Xinwei Guan | Mingtao Liang | Ajay Karakoti | Ajayan Vinu
Source: Small (review, 2023-03-26)
Field: Materials Science — Biomaterials

Stimuli‐Responsive Silica Silanol Conjugates: Strategic Nanoarchitectonics in Targeted Drug Delivery The design of novel drug delivery systems is exceptionally critical in disease treatments. Among the existing drug delivery systems, mesoporous silica nanoparticles (MSNs) have shown profuse promise owing to their structural stability, tunable morphologies/sizes, and ability to load different payload chemistry. Significantly, the presence of surface silanol groups enables functionalization with relevant drugs, imaging, and targeting agents, promoting their utility and popularity among researchers. Stimuli-responsive silanol conjugates have been developed as a novel, more effective way to conjugate, deliver, and release therapeutic drugs on demand and precisely to the selected location. Therefore, it is urgent to summarize the current understanding and the surface silanols' role in making MSN a versatile drug delivery platform. This review provides an analytical understanding of the surface silanols, chemistry, identification methods, and their property-performance correlation. The chemistry involved in converting surface silanols to a stimuli-responsive silica delivery system by endogenous/exogenous stimuli, including pH, redox potential, temperature, and hypoxia, is discussed in depth. Different chemistries for converting surface silanols to stimuli-responsive bonds are discussed in the context of drug delivery. The critical discussion is culminated by outlining the challenges in identifying silanols' role and overcoming the limitations in synthesizing stimuli-responsive mesoporous silica-based drug delivery systems. Silanol ; Drug delivery ; Mesoporous silica ; Nanotechnology ; Surface modification ; Conjugate ; Context (archaeology) ; Chemistry ; Nanoparticle ; Materials science ; Combinatorial chemistry ; Mesoporous material ; Organic chemistry ; Catalysis Nanoparticle-Based Drug Delivery ; Mesoporous Materials and Catalysis ; Supramolecular Self-Assembly in Materials
Authors: Thomas C. Terwilliger | Pavel V. Afonine | Dorothée Liebschner | Tristan I. Croll | Airlie J. McCoy | Robert D. Oeffner | Christopher J. Williams | Billy K. Poon | Jane S. Richardson | Randy J. Read | Paul D. Adams
Source: Acta Crystallographica Section D Structural Biology (article, 2023-02-15)
Field: Materials Science — Materials Chemistry

Accelerating crystal structure determination with iterative <i>AlphaFold</i> prediction Experimental structure determination can be accelerated with artificial intelligence (AI)-based structure-prediction methods such as AlphaFold. Here, an automatic procedure requiring only sequence information and crystallographic data is presented that uses AlphaFold predictions to produce an electron-density map and a structural model. Iterating through cycles of structure prediction is a key element of this procedure: a predicted model rebuilt in one cycle is used as a template for prediction in the next cycle. This procedure was applied to X-ray data for 215 structures released by the Protein Data Bank in a recent six-month period. In 87% of cases our procedure yielded a model with at least 50% of C<sup>α</sup> atoms matching those in the deposited models within 2 Å. Predictions from the iterative template-guided prediction procedure were more accurate than those obtained without templates. It is concluded that AlphaFold predictions obtained based on sequence information alone are usually accurate enough to solve the crystallographic phase problem with molecular replacement, and a general strategy for macromolecular structure determination that includes AI-based prediction both as a starting point and as a method of model optimization is suggested. Sequence (biology) ; Computer science ; Algorithm ; Protein structure prediction ; Matching (statistics) ; Template ; Phase (matter) ; Data mining ; Biological system ; Artificial intelligence ; Protein structure ; Mathematics ; Chemistry ; Statistics Enzyme Structure and Function ; Protein Structure and Dynamics ; Machine Learning in Materials Science
Authors: Mehdi Vahdati | Dominique Hourdet | Costantino Creton
Source: Progress in Polymer Science (article, 2023-01-26)
Field: Materials Science — Surfaces, Coatings and Films

Soft underwater adhesives based on weak molecular interactions Adhesive ; Viscoelasticity ; Soft materials ; Underwater ; Nanotechnology ; Materials science ; Adhesion ; Covalent bond ; Polymer science ; Chemistry ; Composite material ; Organic chemistry ; Layer (electronics) ; Geology Polymer Surface Interaction Studies ; Advanced Polymer Synthesis and Characterization ; Luminescence and Fluorescent Materials
Authors: Guolong Xing | Jingjuan Liu | Yi Zhou | Shuai Fu | Jia‐Jia Zheng | Xi Su | Xingfa Gao | Osamu Terasaki | Mischa Bonn | Hai I. Wang | Long Chen
Source: Journal of the American Chemical Society (article, 2023-04-17)
Field: Chemistry — Inorganic Chemistry

Conjugated Nonplanar Copper-Catecholate Conductive Metal–Organic Frameworks via Contorted Hexabenzocoronene Ligands for Electrical Conduction Conductive metal-organic frameworks (<i>c</i>-MOFs) with outstanding electrical conductivities and high charge carrier mobilities are promising candidates for electronics and optoelectronics. However, the poor solubility of planar ligands greatly hinders the synthesis and widespread applications of <i>c</i>-MOFs. Nonplanar ligands with excellent solubility in organic solvents are ideal alternatives to construct <i>c</i>-MOFs. Herein, contorted hexabenzocoronene (<i>c</i>-HBC) derivatives with good solubility are adopted to synthesize <i>c</i>-MOFs. Three <i>c</i>-MOFs (<i>c</i>-HBC-6O-Cu, <i>c</i>-HBC-8O-Cu, and <i>c</i>-HBC-12O-Cu) with substantially different geometries and packing modes have been synthesized using three multitopic catechol-based <i>c</i>-HBC ligands with different symmetries and coordination numbers, respectively. With more metal coordination centers and increased charge transport pathways, <i>c</i>-HBC-12O-Cu exhibits the highest intrinsic electrical conductivity of 3.31 S m<sup>-1</sup>. Time-resolved terahertz spectroscopy reveals high charge carrier mobilities in <i>c</i>-HBC-based <i>c</i>-MOFs, ranging from 38 to 64 cm<sup>2</sup> V<sup>-1</sup> s<sup>-1</sup>. This work provides a systematic and modular approach to fine-tune the structure and enrich the <i>c</i>-MOF family with excellent charge transport properties using nonplanar and highly soluble ligands. Chemistry ; Solubility ; Molecular wire ; Metal ; Metal-organic framework ; Charge carrier ; Electrical resistivity and conductivity ; Crystallography ; Physical chemistry ; Molecule ; Optoelectronics ; Materials science ; Organic chemistry Metal-Organic Frameworks: Synthesis and Applications ; Covalent Organic Framework Applications ; 2D Materials and Applications
Authors: Yinghui Xie | You Wu | Xiaolu Liu | Mengjie Hao | Zhongshan Chen | Geoffrey I. N. Waterhouse | Xiangke Wang | Hui Yang | Shengqian Ma
Source: Cell Reports Physical Science (article, 2023-01-01)
Field: Chemistry — Inorganic Chemistry

Rational design of cooperative chelating sites on covalent organic frameworks for highly selective uranium extraction from seawater Amidoxime-functionalized adsorbents have been pursued for uranium extraction from seawater, though competitive adsorption of vanadium and copper ions remains an issue. Herein, we report the successful design of a family of covalent organic framework (COF) adsorbents adopting an alternative chelating strategy for uranium binding comprising hydrazine-carbonyl sites with assistant groups for enhanced uranium uptake. A COF possessing hydroxypropoxy assistant groups (denoted as COF-R5) showed exceptional selectivity for uranium over vanadium and other metal ions, resulting in a fast uranium adsorption kinetics and high uptake capacity of 11.3 mg/g with a distribution coefficient over 9.2 × 105 mL/g in seawater, which exceeded most COFs previously reported in the literature. Mechanism studies revealed that hydroxypropoxy groups enhanced the binding of UO22+ at the COF’s hydrazine-carbonyl sites through hydrogen bonding interactions and charge stabilization effects, thus boosting the overall uranium affinity and adsorption capacity. Results validate the developed “uranium nanotraps” strategy for potential large-scale uranium extraction. Uranium ; Adsorption ; Chemistry ; Vanadium ; Seawater ; Inorganic chemistry ; Extraction (chemistry) ; Chelation ; Covalent bond ; Hydrazine (antidepressant) ; Metal ions in aqueous solution ; Nuclear chemistry ; Chelating resin ; Metal ; Organic chemistry ; Materials science ; Chromatography ; Metallurgy Radioactive element chemistry and processing ; Covalent Organic Framework Applications ; Chemical Synthesis and Characterization
Authors: Kiwon Choi | Ahyeon Noh | Jinsil Kim | Pyong Hwa Hong | Min Jae Ko | Sung Woo Hong
Source: Polymers (review, 2023-11-14)
Field: Materials Science — Polymers and Plastics

Properties and Applications of Self-Healing Polymeric Materials: A Review Self-healing polymeric materials, engineered to autonomously self-restore damages from external stimuli, are at the forefront of sustainable materials research. Their ability to maintain product quality and functionality and prolong product life plays a crucial role in mitigating the environmental burden of plastic waste. Historically, initial research on the development of self-healing materials has focused on extrinsic self-healing systems characterized by the integration of embedded healing agents. These studies have primarily focused on optimizing the release of healing agents and ensuring rapid self-healing capabilities. In contrast, recent advancements have shifted the focus towards intrinsic self-healing systems that utilize their inherent reactivity and interactions within the matrix. These systems offer the advantage of repeated self-healing over the same damaged zone, which is attributed to reversible chemical reactions and supramolecular interactions. This review offers a comprehensive perspective on extrinsic and intrinsic self-healing approaches and elucidates their unique properties and characteristics. Furthermore, various self-healing mechanisms are surveyed, and insights from cutting-edge studies are integrated. Self-healing ; Self-healing material ; Nanotechnology ; New product development ; Wound healing ; Materials science ; Biochemical engineering ; Computer science ; Business ; Medicine ; Engineering Polymer composites and self-healing ; Antimicrobial agents and applications ; Advanced Polymer Synthesis and Characterization