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Article
Polymer Science
Celine W. S. Yeung et al.
Summary: Petroleum-based polyolefin plastics have unsustainable life cycles, but they can be transformed into water-soluble antimicrobial polymers to combat the spread of fungal pathogens. This study demonstrates the conversion of polyethylene into low-molecular-weight antimicrobial polymers with potential applications in controlling fungal infections.
Article
Nanoscience & Nanotechnology
Su Yeon Lee et al.
Summary: Due to its ability to remove particulate matter without compromising air permeability, nanofibrous membranes (NFMs) have become increasingly important as filter layers in face masks. In this study, tannic-acid-enriched poly(vinyl alcohol) (PVA-TA) NFMs were successfully fabricated using electrospinning, achieving a uniform solution without coacervate formation. These NFMs exhibited excellent filtration performance, UV-blocking, and antibacterial properties.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Michael Wilms et al.
Summary: We introduce a novel composite material composed of silver nanoparticles and three-dimensional molecular organic cages based on light-absorbing porphyrins. The porphyrin cages not only stabilize the particles but also enable diffusion and trapping of small molecules near the metallic surface. The combination of these two photoactive components leads to a Fano-resonant interaction, resulting in increased energy transfer and enhanced photocurrent for water-splitting applications. This composite structure demonstrates the potential of advanced photosensitizer systems with intrinsic porosity for photocatalytic and sensing applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Biochemistry & Molecular Biology
Sarah Keck et al.
Summary: During the past few decades, the research on 3D printing bio-based and renewable polymers, such as lignin, has gained attention. In this study, a liquid lignin-based photopolymer was synthesized and characterized for additive manufacturing. A lignin-based methacrylate resin was obtained through the oxyalkylation reaction and modification with methacryloyl chloride. A high conversion rate of double bonds (DBC) of up to 80% was achieved through photopolymerization experiments. 3D printing experiments of the methacrylated lignin were conducted using hot lithography technology, resulting in the successful printing of a lignin derivative with a high lignin content of over 30% without the need for reactive diluents.
Article
Biochemistry & Molecular Biology
Chongkai Ji et al.
Summary: The application of conductive hydrogels in flexible electronics has gained much attention due to their excellent mechanical properties and conductivity. However, the development of conductive hydrogels with superior self-adhesion, mechanical properties, antifreeze, and antibacterial activity remains challenging. Inspired by the ligament structure, a multifunctional conductive hydrogel is constructed by introducing collagen into polyacrylamide to address this issue. The obtained conductive hydrogel exhibits outstanding conductivity, ultra-stretchability, self-adhesion, and antibacterial properties.
Article
Chemistry, Physical
Jacob Jeskey et al.
Summary: We developed a simple method for synthesizing N-doped carbon nanospheres with uniform and tunable sizes. The synthesis involves the incorporation of EDTA into the emulsion droplets of phenolic resin oligomers, providing surface charges to prevent the coalescing of the droplets. The resulting N-doped carbon nanospheres have highly uniform sizes and shapes, and can be crystallized into opaline structures for fabricating opaline lattices with brilliant colors. The EDTA also promotes the formation of graphitic-N, making the nanospheres highly active electrocatalysts.
CHEMISTRY OF MATERIALS
(2023)
Article
Engineering, Multidisciplinary
Xiaowei Yang et al.
Summary: This review focuses on the fabrication and biomedical applications of liquid metal nanoparticles (LMNPs) based on gallium (Ga). Ga-based LMs possess outstanding physicochemical properties and can be transformed into functional nanocomposites. The biomedical applications of Ga-based LMs, such as drug delivery, infectious diseases treatment, cancer therapy, and imaging, have attracted increasing research attention.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Biochemistry & Molecular Biology
Jiankang Liu et al.
Summary: The introduction of an AL-Fe3+-H2O2 autocatalytic system allows for the assembly of multifunctional AL-Fe3+/polyacrylic acid hydrogels, which possess excellent mechanical properties, adhesion properties, and self-healing ability. Furthermore, hydrogel-based sensors with high durability and fast response times can accurately monitor motion or electrophysiological signals, and can be integrated into a portable sensing device for remote monitoring of a user's motion status. Therefore, the AL-Fe3+-H2O2 autocatalytic system shows great potential for sustainable development in flexible bioelectronics and wearable sensors.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biochemistry & Molecular Biology
Azhar Ahmad et al.
Summary: Chitosan based monodisperse poly[chitosan-N-isopropylmethacrylamide-acrylic acid] [P(CNA)] microgels were synthesized and used as micro-reactors to prepare Ag-P(CNA) hybrid microgels via chemical reduction of Ag+ ions. The resulting hybrid microgels were characterized by TEM, FTIR spectroscopy, and UV-vis spectroscopy. The catalytic potential of the Ag-P(CNA) hybrid system for the reduction of nitroarenes was evaluated using sodium borohydride as a reductant in aqueous medium. The Ag-P(CNA) hybrid microgel system exhibited stable, economical, and efficient catalytic activity for the rapid reduction of nitroarenes both individually and simultaneously.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Polymer Science
Huan Wang et al.
Summary: Polymer brushes are densely grafted polymer chains on surfaces or interfaces. They can self-assemble or coassemble with block copolymers to form surface nanostructures with different morphologies. In this study, polymer brushes and surface nanostructures were synthesized on tannic acid (TA) coatings. The brushes were anchored onto TA coatings through electrostatic interaction, and surface nanostructures were formed. The density of the polymer chains and the concentration of the block copolymers affected the formation of the nanostructures. These nanostructures could be removed from the surfaces in a sodium chloride solution.
Article
Polymer Science
Kriti Kapil et al.
Summary: Photoinduced ATRP techniques using green light and dual catalysis have been developed for efficient and controlled polymerization. This method allows rapid synthesis of well-defined polymers without the need for deoxygenation, overcoming the limitations of UV light-induced polymerization. The system also enables temporal control and synthesis of various hydrophilic acrylate monomers.
Article
Nanoscience & Nanotechnology
Wei Ha et al.
Summary: In recent years, there has been increasing attention on antibacterial nanosystems for cancer treatment involving bacterial infection. Silver nanoparticles (AgNPs) are widely used for their long-lasting and broad-spectrum antibacterial activity, but their inert surfaces make it difficult to load and deliver anticancer agents directly. This study developed biocompatible silver nanoparticles (TA-AgNPs) using tannic acid as a reducing and stabilizing agent. The TA-AgNPs exhibited low cytotoxicity and significant antibacterial activity. They could also effectively load and deliver the anticancer drug epirubicin hydrochloride (EPI), and showed pH- and GSH-sensitive drug release performance. The TA-AgNPs/EPI nanodrug demonstrated equal cytotoxicity to free EPI against cancer cells and prevented the influence of bacteria on EPI cytotoxicity.
ACS APPLIED NANO MATERIALS
(2023)
Article
Energy & Fuels
Rahat Nawaz et al.
Summary: Silver nanocubes decorated dopamine-magnetic (AgNCs-Dop@Fe3O4) nanomaterials were synthesized and used for analytical applications. The formation of AgNCs-Dop@Fe3O4 materials was confirmed by various characterization techniques. The electrochemical characteristics of the materials were studied for the detection of histamine, showing high catalytic activity and good sensitivity. The proposed material exhibited stability, selectivity, and sensitivity for histamine detection.
Article
Chemistry, Physical
Min Yan et al.
Summary: We report a convenient and environmentally friendly method for the synthesis of inorganic-organic hybrid nanomaterials using tannic acid as a reducing and coating agent. The resulting Pd nanoparticles coated with tannic acid show excellent oxygen reduction reaction activity and stability under alkaline conditions. This strategy allows for efficient interfacial coordination coating and has promising applications in interface engineering of electrocatalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Kang Jing et al.
Summary: Ag@Ti3C2-TA nanocomposite catalyst was constructed using Ti3C2 as the carrier, tannic acid (TA) as the modifier, and silver nitrate as the precious metal precursor. The catalyst exhibited efficient catalytic degradation performance towards rhodamine B (RB) and methyl orange (MO), with degradation percentages increasing with the content of TA in the catalyst. The catalytic degradation process followed quasi-level kinetic model, with catalytic reaction rate constants of 0.972 and 1.478 min-1 for RB and MO, respectively. The catalytic stability of Ag@Ti3C2-TA remained high, with degradation percentages above 80% even after 10 catalytic cycles.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Nanoscience & Nanotechnology
Jiongfeng Sun et al.
Summary: Hydrogels are formed through the cross-linking of hydrophilic polymer chains in an aqueous microenvironment. This study presented a novel synthesis strategy, UV-initiated frontal polymerization, to rapidly synthesize bubble-free, self-propagating hydrogel anticorrosive coatings in aqueous conditions with a polymerization rate of 16.7 mm min(-1). Various characterization techniques were used to investigate the surface morphology and anti-corrosion properties of the hydrogel coating. Nano-SiO2 was added to enhance the stability of the three-dimensional network by forming dense hydrogen bonds. The hydrogel coating demonstrated effective blocking of corrosive media and chloride ions underwater, and exhibited active anti-corrosion function through the accumulation of 1,2,4-triazole on the steel surface. This research provides a foundation for the in situ synthesis of hydrogel anticorrosive coatings on mild steel surfaces in wet or underwater conditions.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Hiral M. Mistry et al.
Summary: Graphene oxide nanocomposites containing silver and gold nanoparticles (Ag-GO and Au-GO) were successfully synthesized by reducing Ag+ and Au+ cations with black tea extract as the highly reactive reducing agent. The synthesized GO, Ag-GO, and Au-GO samples were characterized using various techniques, and the accumulation of metal nanoparticles on the surface of graphene oxide was observed. Measurements of I-V curves and transient photocurrent (I-t) were performed under different bias voltages and wavelengths, revealing the high detectivities of Ag-GO and Au-GO nanocomposites in future opto-electronic device applications.
APPLIED SURFACE SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Shuqi Li et al.
Summary: In this study, lignin-based polyurethane foams with silver nanoparticles were prepared using a simple one-step foaming method. The composite foam showed improved properties and antibacterial effects. The foam exhibited a high antibacterial rate and promoted wound healing in animal experiments, indicating its potential for clinical applications.
Article
Biochemistry & Molecular Biology
Jun Hu et al.
Summary: The search for novel fluorescent materials has attracted the attention of many researchers. In recent years, nonconventional fluorescence emitters have been developed as promising bioimaging candidates due to their enhanced biodegradability and relatively low cost, and their luminescent mechanism is similar to clustering-triggered emission (CTE). Our contribution involves the preparation of a series of glycopolymers with designed components using nonaromatic sugar as a monomer through sunlight-induced reversible addition fragmentation chain transfer polymerization, which can be utilized in bioimaging fields due to their bioactivity and CTE capacity.
Review
Medicine, Research & Experimental
Xirui Chen et al.
Summary: This article introduces the application of engineered noble metal nanoparticles in improving immunoassay sensitivity. By modulating the physical parameters of nanoparticles, including size, shape, composition, and external structure, the performance of immunoassay can be improved. Engineered nanoparticles have a wide range of applications in trace analysis.
Article
Biochemistry & Molecular Biology
Weishi Wang et al.
Summary: This study investigated the performance of lignin-based epoxy resin adhesives prepared using lignin sulfonates as raw materials. The resulting adhesive showed excellent tensile shear strength and stability in high-temperature and high-humidity environments.
Article
Engineering, Chemical
Xuliang Lin et al.
Summary: The study explores a hybrid electrocatalyst of CoFe alloy and CoxN heterojunction encapsulated in N-doped carbon support for oxygen evolution reaction (OER). The in situ coupled electrocatalyst exhibited outstanding OER activity and stability. DFT calculations showed that the heterojunction and N-doped graphitic encapsulation enhanced the OER activity and stability by improving electron transfer efficiency.
Article
Chemistry, Multidisciplinary
Xuliang Lin et al.
Summary: The study presents a fully lignocellulosic biomass-based hydrogel evaporator, which shows high evaporation rate and photothermal conversion efficiency, being able to produce freshwater from seawater. It also exhibits excellent salt resistance, durability, and long-term stability.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Mohammad Morsali et al.
Summary: This study reports the synthesis of hydroxymethylated lignin nanoparticles and their stabilization through hydrothermal curing. These particles have high biobased content, tunable particle size distribution, and structural stability in both aqueous media and organic solvents. The stabilized lignin particles can be further modified and reused, showing potential for their use in circular biobased nanomaterials.
Article
Environmental Sciences
Su Yeon Lee et al.
Summary: In this study, nanofibrous membranes (NFMs) were fabricated via green electrospinning of poly(vinyl alcohol) (PVA), and their water resistance was improved through simple heat treatment. Heavy metal adsorbents were prepared by dip-coating the NFMs in an aqueous solution of tannic acid (TA). The TA-coated PVA NFMs exhibited excellent selectivity for Pb(II) and retained over 70% of their initial adsorption capacity after multiple cycles of adsorption/desorption.
Article
Engineering, Multidisciplinary
Qian Guo et al.
Summary: As electronic devices become smaller and more integrated, the use of nano-sized silica as a reinforcing filler for epoxy resin in electronics packaging industries has become necessary. However, using silica nanoparticles poses challenges in terms of filler dispersion and the balance between rheology and thermal mechanical performance of epoxy nanocomposites. This study introduces a new strategy by using amino-rich branched polyethyleneimine (PEI) polymer molecules through a self-assembly process to address these challenges. The results show a significant decrease in viscosity and an improvement in viscosity stability, as well as a further reduction in CTE compared to silica nanoparticles. This work provides a new direction for developing high-performance epoxy composites for electrical packaging applications and offers insights into the interface-property relationships.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Engineering, Chemical
Shengjun Bian et al.
Summary: In this study, TFN membranes with added hollow polymer phenolic resin nanospheres (HPS) and silver nanoparticles immobilized HPS (Ag/HPS) were successfully prepared. The results showed that the addition of HPS and Ag/HPS significantly improved the separation performance, long-term stability, and fouling resistance of TFN membranes.
Article
Nanoscience & Nanotechnology
Xiaodong He et al.
Summary: The study demonstrates the synthesis of natural polyphenol tannic acid-capped silver nanoparticles for antibacterial surface coatings, showing significant antibacterial effects both in vitro and in vivo. The functionalized surfaces exhibit minimal cytotoxicity and no side effects on major organs after implantation, indicating their biocompatibility for potential biomedical applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Composites
Wenshuai Yang et al.
Summary: The review focused on recent advancements in synthesis methods and properties of NPs@GO nanocomposites, their recyclability, applications in catalytic reduction of organic pollutants and elimination of microbial pathogens in wastewater, as well as the corresponding catalytic and antibacterial mechanisms.
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COORDINATION CHEMISTRY REVIEWS
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CARBOHYDRATE POLYMERS
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