1
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Li D, Chen L, Qiu X. Rapid synthesis of ferulic acid-derived lignin coated silver nanoparticles with low cytotoxicity and high antibacterial activity. Int J Biol Macromol 2024; 277:134471. [PMID: 39102905 DOI: 10.1016/j.ijbiomac.2024.134471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 07/09/2024] [Accepted: 08/02/2024] [Indexed: 08/07/2024]
Abstract
Antibiotic resistance and the rise of untreatable bacterial infections pose severe threats to human health. Silver nanoparticles (AgNPs) have emerged as a promising antibacterial solution due to their broad-spectrum effectiveness. However, their relatively high cytotoxicity has limited their widespread application. In this study, ferulic acid (FA) was used as a reducing agent, while silver oxide served as a silver precursor to rapidly prepare FA-derived lignin (FAL) coated AgNPs (AgNPs@FAL) with a size ranging from 34.8 to 77.1 nm. Density functional theory (DFT) calculations indicated that the coating of FAL endowed AgNPs@FAL with high stability, preventing the oxidation of AgNPs prior to antibacterial applications. Cell experiments further indicated that AgNPs@FAL exhibited lower cell toxicity (∼80 % viability of normal kidney cells cultured at 25 μg/mL AgNPs@FAL) compared to fully exposed commercially available citrate-modified AgNPs (AgNPs@CA). Antibacterial experiments revealed that the minimum inhibitory concentrations (MIC) of AgNPs@FAL against E. coli and S. aureus were 12.5 μg/mL and 25 μg/mL, respectively, surpassing the antibacterial effect of AgNPs@CA, as well as ampicillin and penicillin. Additionally, AgNPs@FAL was capable of disrupting E. coli and S. aureus biofilm formation. This novel AgNPs@FAL formulation presents a promising antibacterial solution, addressing limitations observed in conventional drugs.
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Affiliation(s)
- Dan Li
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Liheng Chen
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China; Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center, Jieyang 515200, China.
| | - Xueqing Qiu
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China; Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center, Jieyang 515200, China.
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2
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Yao X, Cao X, He J, Hao L, Chen H, Li X, Huang W. Controlled Fabrication of Unimolecular Micelles as Versatile Nanoplatform for Multifunctional Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2405816. [PMID: 39246207 DOI: 10.1002/smll.202405816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2024] [Revised: 08/26/2024] [Indexed: 09/10/2024]
Abstract
Unimolecular micelles (UMs) are nano-sized structures that are composed of single molecules with precise composition. Compared to self-assembled polymeric micelles, UMs possess ultra-stable property even in complex biological environment. With the development of controllable polymerization and coupling chemistry, the preparation of narrowly monodispersed UMs with precise morphology and size has been realized, which further facilitates their multifunctional applications. After brief introduction, state-of-the-art advances in the synthesis and applications of UMs are discussed with an emphasis on their bioapplications. It is believed that these UMs have great potential in future fabrication of multifunctional nanoplatforms.
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Affiliation(s)
- Xikuang Yao
- School of Flexible Electronics (Future Technologies) and Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, 211816, P. R. China
| | - Xudong Cao
- School of Flexible Electronics (Future Technologies) and Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, 211816, P. R. China
| | - Jiayu He
- School of Flexible Electronics (Future Technologies) and Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, 211816, P. R. China
| | - Linhui Hao
- School of Flexible Electronics (Future Technologies) and Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, 211816, P. R. China
| | - Haobo Chen
- School of Flexible Electronics (Future Technologies) and Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, 211816, P. R. China
| | - Xin Li
- School of Pharmaceutical Science, Nanjing Tech University (NanjingTech), Nanjing, 211816, P. R. China
| | - Wei Huang
- School of Flexible Electronics (Future Technologies) and Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, 211816, P. R. China
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), Northwestern Polytechnical University (NPU), Xi'an, 710072, P. R. China
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3
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Wang XY, Meng W, Xie HP, Song DN, Du MH, Chen JX, Braunstein P, Lang JP. Zwitterionic Thiolate-Protected Ag 22(0/I) and Ag 20(I) Clusters: Assembly, Structural Characterization, and Antibacterial Activity. Inorg Chem 2024; 63:13014-13021. [PMID: 38943593 DOI: 10.1021/acs.inorgchem.4c01735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2024]
Abstract
Zwitterionic thiolate ligands have the potential to introduce novel assembly modes and functions for noble metal clusters. However, their utilization in the synthesis of silver clusters remains understudied, particularly for the clusters containing reductive Ag(0) species. In this article, we report the first synthesis of a mixed-valence silver(0/I) cluster protected by zwitterionic Tab as thiolate ligands (Tab = 4-(trimethylammonio)benzenethiolate), denoted as [Ag22(Tab)24](PF6)20·16CH3OH·6Et2O (Ag22·16CH3OH·6Et2O), alongside an Ag(I) cluster [Ag20(Tab)12(PhCOO)10(MeCN)2(H2O)](PF6)10·11MeCN (Ag20·11MeCN). Ag22 has a distinct hierarchical supratetrahedral structure with a central {Ag6} kernel surrounded by four [Ag4(Tab)6]4+ units. High-resolution electrospray ionization mass spectra demonstrate that Ag22 has two free electrons, indicating a superatomic core. Ag20 has a drum-like [Ag12(Tab)6(PhCOO)6(H2O)]6+ inner core capped by two tetrahedral-like [Ag4(Tab)3(PhCOO)2(MeCN)]2+ units. Ag20 can be transformed into Ag22 after its reaction with NaBH4 in solution. Antibacterial measurements reveal that Ag22 has a significantly lower minimum inhibitory concentration than that of the Ag20 cluster. This work not only extends the stabilization of silver(0/I) clusters to neutral thiol ligands but also offers new materials for the development of novel antibacterial materials.
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Affiliation(s)
- Xin-Yao Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Wei Meng
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, Guangdong, China
| | - Hong-Ping Xie
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu, China
| | - Dan-Na Song
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu, China
| | - Ming-Hao Du
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu, China
| | - Jin-Xiang Chen
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, Guangdong, China
| | - Pierre Braunstein
- Université de Strasbourg - CNRS, Institut de Chimie (UMR 7177 CNRS), 4 rue Blaise Pascal, 67081 Strasbourg, France
| | - Jian-Ping Lang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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4
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Argenziano R, Viggiano S, Laezza A, Scalia AC, Aprea P, Bochicchio B, Pepe A, Panzella L, Cochis A, Rimondini L, Napolitano A. Highly Cytocompatible Polylactic Acid Based Electrospun Microfibers Loaded with Silver Nanoparticles Generated onto Chestnut Shell Lignin for Targeted Antibacterial Activity and Antioxidant Action. ACS APPLIED MATERIALS & INTERFACES 2024; 16:28230-28244. [PMID: 38775439 DOI: 10.1021/acsami.4c05761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Electrospun (e-spun) fibers are generally regarded as powerful tools for cell growth in tissue regeneration applications, and the possibility of imparting functional properties to these materials represents an increasingly pursued goal. We report herein the preparation of hybrid materials in which an e-spun d,l-polylactic acid matrix, to which chitosan or crystalline nanocellulose was added to improve hydrophilicity, was loaded with different amounts of silver(0) nanoparticles (AgNP) generated onto chestnut shell lignin (CSL) (AgNP@CSL). A solvent-free mechanochemical method was used for efficient (85% of the theoretical value by XRD analysis) Ag(0) production from the reduction of AgNO3 by lignin. For comparison, e-spun fibers containing CSL alone were also prepared. SEM and TEM analyses confirmed the presence of AgNP@CSL (average size 30 nm) on the fibers. Different chemical assays indicated that the AgNP@CSL containing fibers exhibited marked antioxidant properties (EC50 1.6 ± 0.1 mg/mL, DPPH assay), although they were halved with respect to those of the CSL containing fibers, as expected because of the efficient silver ion reduction. All the fibers showed high cytocompatibility toward human mesenchymal stem cells (hMSCs) representative of the self-healing process, and their antibacterial properties were tested against the pathogens Escherichia coli (E. coli), Staphylococcus epidermidis, and Pseudomonas aeruginosa. Finally, competitive surface colonization as simulated by cocultures of hMSC and E. coli showed that AgNP@CSL loaded fibers offered the cells a targeted protection from infection, thus well balancing cytocompatibility and antibacterial properties.
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Affiliation(s)
- Rita Argenziano
- Department of Chemical Sciences, University of Naples "Federico II", Naples 80126, Italy
- Department of Agricultural Sciences, University of Naples "Federico II", Portici (NA), Naples 80055, Italy
| | - Sara Viggiano
- Department of Chemical Sciences, University of Naples "Federico II", Naples 80126, Italy
| | - Antonio Laezza
- Department of Science, University of Basilicata, Potenza 85100, Italy
| | - Alessandro Calogero Scalia
- Department of Health Sciences, Center for Translational Research on Autoimmune and Allergic Diseases-CAAD, Università del Piemonte Orientale UPO, Novara 28100, Italy
| | - Paolo Aprea
- Department of Chemical, Materials and Industrial Production Engineering, University of Naples"Federico II", Naples 80125, Italy
| | | | - Antonietta Pepe
- Department of Science, University of Basilicata, Potenza 85100, Italy
| | - Lucia Panzella
- Department of Chemical Sciences, University of Naples "Federico II", Naples 80126, Italy
| | - Andrea Cochis
- Department of Health Sciences, Center for Translational Research on Autoimmune and Allergic Diseases-CAAD, Università del Piemonte Orientale UPO, Novara 28100, Italy
| | - Lia Rimondini
- Department of Health Sciences, Center for Translational Research on Autoimmune and Allergic Diseases-CAAD, Università del Piemonte Orientale UPO, Novara 28100, Italy
| | - Alessandra Napolitano
- Department of Chemical Sciences, University of Naples "Federico II", Naples 80126, Italy
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5
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Li D, Chen L. Solvent-Induced Lignin Conformation Changes Affect Synthesis and Antibacterial Performance of Silver Nanoparticle. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:957. [PMID: 38869582 PMCID: PMC11173806 DOI: 10.3390/nano14110957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/16/2024] [Accepted: 05/23/2024] [Indexed: 06/14/2024]
Abstract
The emergence of antibiotic-resistant bacteria necessitates the development of novel, sustainable, and biocompatible antibacterial agents. This study addresses cytotoxicity and environmental concerns associated with traditional silver nanoparticles (AgNPs) by exploring lignin, a readily available and renewable biopolymer, as a platform for AgNPs. We present a novel one-pot synthesis method for lignin-based AgNPs (AgNPs@AL) nanocomposites, achieving rapid synthesis within 5 min. This method utilizes various organic solvents, demonstrating remarkable adaptability to a wide range of lignin-dissolving systems. Characterization reveals uniform AgNP size distribution and morphology influenced by the chosen solvent. This adaptability suggests the potential for incorporating lignin-loaded antibacterial drugs alongside AgNPs, enabling combined therapy in a single nanocomposite. Antibacterial assays demonstrate exceptional efficacy against both Gram-negative and Gram-positive bacteria, with gamma-valerolactone (GVL)-assisted synthesized AgNPs exhibiting the most potent effect. Mechanistic studies suggest a combination of factors contributes to the antibacterial activity, including direct membrane damage caused by AgNPs and sustained silver ion release, ultimately leading to bacterial cell death. This work presents a straightforward, adaptable, and rapid approach for synthesizing biocompatible AgNPs@AL nanocomposites with outstanding antibacterial activity. These findings offer a promising and sustainable alternative to traditional antibiotics, contributing to the fight against antibiotic resistance while minimizing environmental impact.
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Affiliation(s)
- Dan Li
- Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center, Jieyang 515200, China;
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Liheng Chen
- Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center, Jieyang 515200, China;
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
- Guangdong Basic Research Center of Excellence for Ecological Security, Green Development in Guangdong-Hong Kong-Marco Greater Bay Area (GBA), Guangdong University of Technology, Guangzhou 510006, China
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6
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Xiao S, Lao Y, Liu H, Li D, Wei Q, Ye L, Lu S. A nanocomposite hydrogel loaded with Ag nanoparticles reduced by aloe vera polysaccharides as an antimicrobial multifunctional sensor. Int J Biol Macromol 2024; 267:131541. [PMID: 38614183 DOI: 10.1016/j.ijbiomac.2024.131541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/08/2024] [Accepted: 04/09/2024] [Indexed: 04/15/2024]
Abstract
Developing high-performance hydrogels with anti-freeze, and antimicrobial properties is crucial for the practical application of flexible sensors. In this study, we prepared silver nanoparticles (AgNPs) with aloe polysaccharide (AP) as a reducing agent. Then, the AP/AgNPs were added to a system of polyvinyl alcohol and borax crosslinked in water/glycerol to obtain a multifunctional conductive hydrogel. The incorporated AgNPs improved the conductivity (0.39 S/m) and mechanical properties (elongation at break: 732.9 %, fracture strength: 1267.6 kPa) of the hydrogel. In addition, resultant hydrogel exhibited potential for sensing strain, temperature, and humidity. When used as a strain sensor, the hydrogel system exhibited low detection limit (0.1 %), and fast response (0.08 s). The resistance of the hydrogel decreased with an increase in the absorbed moisture content, enabling humidity detection (25-95 %) to monitor breathing status. As a temperature sensor, the hydrogel supported a wide detection range (-50 to +90 °C) and sensitivity (-30-0 °C, temperature coefficient of resistance (TCR) = -5.64 %/°C) to detect changes in the ambient temperature. This study proposes a simple method for manufacturing multifunctional hydrogel sensors, which broadens their application prospects in wearable sensing and electronic products.
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Affiliation(s)
- Suijun Xiao
- Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education/Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin 541004, China
| | - Yufei Lao
- Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education/Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin 541004, China
| | - Hongbo Liu
- Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education/Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin 541004, China
| | - Dacheng Li
- Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education/Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin 541004, China
| | - Qiaoyan Wei
- Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education/Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin 541004, China
| | - Liangdong Ye
- Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education/Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin 541004, China
| | - Shaorong Lu
- Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education/Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin 541004, China.
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7
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Durairaj S, Sridhar D, Ströhle G, Li H, Chen A. Bactericidal Effect and Cytotoxicity of Graphene Oxide/Silver Nanocomposites. ACS APPLIED MATERIALS & INTERFACES 2024; 16:18300-18310. [PMID: 38574271 DOI: 10.1021/acsami.3c15798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
To tackle the proliferation of pathogenic microorganisms without relying on antibiotics, innovative materials boasting antimicrobial properties have been engineered. This study focuses on the development of graphene oxide/silver (GO/Ag) nanocomposites, derived from partially reduced graphene oxide adorned with silver nanoparticles. Various nanocomposites with different amounts of silver (GO/Ag-1, GO/Ag-2, GO/Ag-3, and GO/Ag-4) were synthesized, and their antibacterial efficacy was systematically studied. The silver nanoparticles were uniformly deposited on the partially reduced graphene oxide surface, exhibiting spherical morphologies with an average size of 25 nm. The nanocomposites displayed potent antibacterial properties against both gram-positive bacteria (S. aureus and B. subtilis) and gram-negative bacteria (E. coli and S. enterica) as confirmed by minimum inhibition concentration (MIC) studies and time-dependent experiments. The optimal MIC for Gram-positive bacteria was 62.5 μg/mL and for Gram-negative bacteria was 125 μg/mL for the GO/Ag nanocomposites. Bacterial cells that encountered the nanocomposite films exhibited significantly greater inhibitory effects compared to those exposed to conventional antibacterial materials. Furthermore, the cytotoxicity of these nanocomposites was assessed using human epithelial cells (HEC), revealing that GO/Ag-1 and GO/Ag-2 exhibited lower toxicity levels toward HEC and remained compatible even at higher dilution rates. This study underscores the potential of GO/Ag-based nanocomposites as versatile materials for antibacterial applications, particularly as biocompatible wound dressings, offering promising prospects for wound healing and infection control.
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Affiliation(s)
- Sharmila Durairaj
- Electrochemical Technology Centre, Department of Chemistry, University of Guelph, 50 Stone Road East, Guelph, Ontario N1G 2W1, Canada
| | - Deepak Sridhar
- Zentek Ltd., 24 Corporate Court, Guelph, Ontario N1G 5G5, Canada
| | - Gisela Ströhle
- School of Engineering, University of Guelph, 50 Stone Road East, Guelph, Ontario N1G 2W1, Canada
| | - Huiyan Li
- School of Engineering, University of Guelph, 50 Stone Road East, Guelph, Ontario N1G 2W1, Canada
| | - Aicheng Chen
- Electrochemical Technology Centre, Department of Chemistry, University of Guelph, 50 Stone Road East, Guelph, Ontario N1G 2W1, Canada
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Sarkar AN, Padhi S, Kumari S, Jagadevan S, Pal S. Facile Synthesis of Carbon Dot Deposited γ-FeOOH Nanosheet/Polypyrrole Composite: A Robust Photocatalyst for Degradation of Antibiotics under Sunlight Irradiation with Enhanced Antibacterial Activity. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c03172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Abanindra Nath Sarkar
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM), Dhanbad826004, India
| | - Satyajeet Padhi
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM), Dhanbad826004, India
| | - Soni Kumari
- Department of Environmental Science and Engineering, Indian Institute of Technology (ISM), Dhanbad826004, India
| | - Sheeja Jagadevan
- Department of Environmental Science and Engineering, Indian Institute of Technology (ISM), Dhanbad826004, India
| | - Sagar Pal
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM), Dhanbad826004, India
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9
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Liu W, Wu X, Li Y, Liu S, Lv Y, Zhang C. Fabrication of silver ions aramid fibers and polyethylene composites with excellent antibacterial and mechanical properties. E-POLYMERS 2022. [DOI: 10.1515/epoly-2022-0082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Abstract
Nowadays, with the continuous understanding of the pathogenic mechanism of bacterium, the demand for antibacterial plastic products had significantly increased. Besides that, many counties issued mandatory standards for plastic products, which imposed strict requirements on ash content to prevent the addition of excessive inorganic matter to plastics in order to avoid weakening the properties of plastics and deteriorating the recyclable property. Based on this, the development of composites with organic fiber-loaded antibacterial agents is of practicable value and urgency. We used an open-ring addition reaction to modified aramid fiber (AF) by utilizing epoxypropyltrimethoxysilane to react with the reactive groups on the surface of AFs. Subsequently, the modified fibers were surface loaded with silver ionic glass beads. After that, a series of high-density polyethylene composites with excellent mechanical properties and antibacterial properties were prepared using melt mixing method. It was shown that the composite had a low ash value (1.88 wt%) even at a higher filling concentration (7 wt%) and the fibers could change the crystalline properties and morphology of the composite. Because of the fiber reinforcement and crystallization induction effects, the tensile strength and elasticity module of the composites could be improved by 141% and 136%, respectively. In addition, the composites had excellent long-lasting contact antibacterial effects against the inhibition of E. coli. The proposed organic fiber loading technique and antibacterial composites will provide a method for designing and preparing eco-friendly and high-performance plastic products.
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Affiliation(s)
- Wei Liu
- School of Materials and Energy Engineering, Guizhou Institute of Technology , Guiyang , 550003 , China
| | - Xian Wu
- School of Materials and Energy Engineering, Guizhou Institute of Technology , Guiyang , 550003 , China
| | - Yang Li
- School of Materials and Energy Engineering, Guizhou Institute of Technology , Guiyang , 550003 , China
| | - Shan Liu
- School of Materials and Energy Engineering, Guizhou Institute of Technology , Guiyang , 550003 , China
| | - Yunwei Lv
- R&D Department, Guizhou Yuandan New Materials Company , Zhenyuan , 522625 , China
| | - Chun Zhang
- School of Materials and Energy Engineering, Guizhou Institute of Technology , Guiyang , 550003 , China
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10
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Zheng Y, Wei M, Wu H, Li F, Ling D. Antibacterial metal nanoclusters. J Nanobiotechnology 2022; 20:328. [PMID: 35842693 PMCID: PMC9287886 DOI: 10.1186/s12951-022-01538-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 05/14/2022] [Indexed: 11/10/2022] Open
Abstract
Combating bacterial infections is one of the most important applications of nanomedicine. In the past two decades, significant efforts have been committed to tune physicochemical properties of nanomaterials for the development of various novel nanoantibiotics. Among which, metal nanoclusters (NCs) with well-defined ultrasmall size and adjustable surface chemistry are emerging as the next-generation high performance nanoantibiotics. Metal NCs can penetrate bacterial cell envelope more easily than conventional nanomaterials due to their ultrasmall size. Meanwhile, the abundant active sites of the metal NCs help to catalyze the bacterial intracellular biochemical processes, resulting in enhanced antibacterial properties. In this review, we discuss the recent developments in metal NCs as a new generation of antimicrobial agents. Based on a brief introduction to the characteristics of metal NCs, we highlight the general working mechanisms by which metal NCs combating the bacterial infections. We also emphasize central roles of core size, element composition, oxidation state, and surface chemistry of metal NCs in their antimicrobial efficacy. Finally, we present a perspective on the remaining challenges and future developments of metal NCs for antibacterial therapeutics.
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Affiliation(s)
- Youkun Zheng
- Key Laboratory of Medical Electrophysiology, Ministry of Education, Institute of Cardiovascular Research of Southwest Medical University, 646000, Luzhou, China
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Min Wei
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Haibin Wu
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Fangyuan Li
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China.
| | - Daishun Ling
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China.
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, National Center for Translational Medicine, Shanghai Jiao Tong University, 200240, Shanghai, China.
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11
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Ma J, Li K, Gu S, Wu Y, Zhang J, Wu J, Zhao L, Li X. Antimicrobial carbon-dot–stabilized silver nanoparticles. NEW J CHEM 2022. [DOI: 10.1039/d1nj05798g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Carbon-dot–stabilized silver nanoparticles (CD–AgNPs) with high stability and low toxicity exhibit good antibacterial activity and broad-spectrum performance.
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Affiliation(s)
- Jinliang Ma
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan 471023, China
- Institute of Molecular Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Kexin Li
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan 471023, China
| | - Shaobin Gu
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan 471023, China
| | - Ying Wu
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan 471023, China
| | - Jing Zhang
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan 471023, China
| | - Jiafa Wu
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan 471023, China
| | - Lina Zhao
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan 471023, China
| | - Xuan Li
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan 471023, China
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12
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Wu YM, Zhao PC, Jia B, Li Z, Yuan S, Li CH. A silver-functionalized metal–organic framework with effective antibacterial activity. NEW J CHEM 2022. [DOI: 10.1039/d1nj06183f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A metal–organic framework with alkene-functional groups was constructed and postsynthetically modified with Ag(i) for antibacterial applications.
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Affiliation(s)
- Ya-Meng Wu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, P. R. China
| | - Pei-Chen Zhao
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, P. R. China
| | - Bin Jia
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Zhe Li
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Shuai Yuan
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, P. R. China
| | - Cheng-Hui Li
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, P. R. China
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