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Tarannum N, Khatoon S, Yadav A, Yadav AK. SERS-Based Molecularly Imprinted Polymer Sensor for Highly Sensitive Norfloxacin Detection. J Food Compost Anal 2023. [DOI: 10.1016/j.jfca.2023.105281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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2
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Song J, Vikulina AS, Parakhonskiy BV, Skirtach AG. Hierarchy of hybrid materials. Part-II: The place of organics- on-inorganics in it, their composition and applications. Front Chem 2023; 11:1078840. [PMID: 36762189 PMCID: PMC9905839 DOI: 10.3389/fchem.2023.1078840] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 01/05/2023] [Indexed: 01/26/2023] Open
Abstract
Hybrid materials or hybrids incorporating organic and inorganic constituents are emerging as a very potent and promising class of materials due to the diverse but complementary nature of their properties. This complementarity leads to a perfect synergy of properties of the desired materials and products as well as to an extensive range of their application areas. Recently, we have overviewed and classified hybrid materials describing inorganics-in-organics in Part-I (Saveleva, et al., Front. Chem., 2019, 7, 179). Here, we extend that work in Part-II describing organics-on-inorganics, i.e., inorganic materials modified by organic moieties, their structure and functionalities. Inorganic constituents comprise of colloids/nanoparticles and flat surfaces/matrices comprise of metallic (noble metal, metal oxide, metal-organic framework, magnetic nanoparticles, alloy) and non-metallic (minerals, clays, carbons, and ceramics) materials; while organic additives can include molecules (polymers, fluorescence dyes, surfactants), biomolecules (proteins, carbohydtrates, antibodies and nucleic acids) and even higher-level organisms such as cells, bacteria, and microorganisms. Similarly to what was described in Part-I, we look at similar and dissimilar properties of organic-inorganic materials summarizing those bringing complementarity and composition. A broad range of applications of these hybrid materials is also presented whose development is spurred by engaging different scientific research communities.
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Affiliation(s)
- Junnan Song
- Nano-BioTechnology Group, Department of Biotechnology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium,*Correspondence: Junnan Song, ; Bogdan V. Parakhonskiy, ; Andre G. Skirtach,
| | - Anna S. Vikulina
- Bavarian Polymer Institute, Friedrich-Alexander-Universität Erlangen-Nürnberg, Bayreuth, Germany
| | - Bogdan V. Parakhonskiy
- Nano-BioTechnology Group, Department of Biotechnology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium,*Correspondence: Junnan Song, ; Bogdan V. Parakhonskiy, ; Andre G. Skirtach,
| | - Andre G. Skirtach
- Nano-BioTechnology Group, Department of Biotechnology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium,*Correspondence: Junnan Song, ; Bogdan V. Parakhonskiy, ; Andre G. Skirtach,
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Gao J, Feng M, Yan Y, Zhao Z, Wang Y. Preparation of a sulfonated coal@ZVI@chitosan-acrylic acid composite and study of its removal of groundwater Cr(VI). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:6544-6558. [PMID: 36001265 DOI: 10.1007/s11356-022-22413-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 08/02/2022] [Indexed: 06/15/2023]
Abstract
In this research, a new composite adsorbent (SC@ZVI@CS-AA) was designed and synthesized, and its application for the removal of Cr(VI) in groundwater was investigated. The interaction between SC@ZVI@CS-AA and Cr(VI) conformed to a pseudo-second-order model, and the adsorption process was dominated by chemisorption. The effects of material ratios, pH, temperature, SC@ZVI@CS-AA dosage, and coexisting ions on the removal of Cr(VI) were investigated. The removal efficiency of Cr(VI) by SC@ZVI@CS-AA reached 95%, and the reaction was significantly inhibited when SO42- was present. Thermodynamically, the adsorption of Cr(VI) proceeded spontaneously above 35 °C (ΔGθ < 0). According to scanning electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectrometry, and synchronous thermal analysis, the removal mechanism of Cr(VI) by SC@ZVI@CS-AA was attributed to electrostatic attraction and reduction. In addition, SC@ZVI@CS-AA had good cyclic adsorption performance. Overall, the SC@ZVI@CS-AA composite showed great potential in the remediation of Cr(VI)-contaminated groundwater.
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Affiliation(s)
- Jianlei Gao
- School of Ecology and Environmental Science, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450000, People's Republic of China
| | - Mengyuan Feng
- School of Ecology and Environmental Science, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450000, People's Republic of China
| | - Yixin Yan
- School of Ecology and Environmental Science, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450000, People's Republic of China.
| | - Zixu Zhao
- School of Ecology and Environmental Science, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450000, People's Republic of China
| | - Yingchun Wang
- School of Ecology and Environmental Science, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450000, People's Republic of China
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Vinnacombe-Willson GA, Conti Y, Jonas SJ, Weiss PS, Mihi A, Scarabelli L. Surface Lattice Plasmon Resonances by Direct In Situ Substrate Growth of Gold Nanoparticles in Ordered Arrays. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2205330. [PMID: 35903851 PMCID: PMC9549758 DOI: 10.1002/adma.202205330] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/13/2022] [Indexed: 05/24/2023]
Abstract
Precise arrangements of plasmonic nanoparticles on substrates are important for designing optoelectronics, sensors and metamaterials with rational electronic, optical and magnetic properties. Bottom-up synthesis offers unmatched control over morphology and optical response of individual plasmonic building blocks. Usually, the incorporation of nanoparticles made by bottom-up wet chemistry starts from batch synthesis of colloids, which requires time-consuming and hard-to-scale steps like ligand exchange and self-assembly. Herein, an unconventional bottom-up wet-chemical synthetic approach for producing gold nanoparticle ordered arrays is developed. Water-processable hydroxypropyl cellulose stencils facilitate the patterning of a reductant chemical ink on which nanoparticle growth selectively occurs. Arrays exhibiting lattice plasmon resonances in the visible region and near infrared (quality factors of >20) are produced following a rapid synthetic step (<10 min), all without cleanroom fabrication, specialized equipment, or self-assembly, constituting a major step forward in establishing in situ growth approaches. Further, the technical capabilities of this method through modulation of the particle size, shape, and array spacings directly on the substrate are demonstrated. Ultimately, establishing a fundamental understanding of in situ growth has the potential to inform the fabrication of plasmonic materials; opening the door for in situ growth fabrication of waveguides, lasing platforms, and plasmonic sensors.
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Affiliation(s)
- Gail A Vinnacombe-Willson
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Ylli Conti
- Institute of Materials Science of Barcelona, ICMAB-CSIC, Campus UAB, Bellaterra, 08193, Spain
| | - Steven J Jonas
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Paul S Weiss
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Agustín Mihi
- Institute of Materials Science of Barcelona, ICMAB-CSIC, Campus UAB, Bellaterra, 08193, Spain
| | - Leonardo Scarabelli
- Institute of Materials Science of Barcelona, ICMAB-CSIC, Campus UAB, Bellaterra, 08193, Spain
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Sarhan A, Fahmy T. Investigation of AC Conductivity Scaling and Dielectric Relaxation Dynamics of Chitosan/Iron Complexes. J MACROMOL SCI B 2022. [DOI: 10.1080/00222348.2022.2094673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- A. Sarhan
- Polymer Research Group, Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - T. Fahmy
- Polymer Research Group, Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt
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Rahimzadegan M, Mohammadi Q, Shafieian M, Sabzevari O, Hassannejad Z. Influence of reducing agents on in situ synthesis of gold nanoparticles and scaffold conductivity with emphasis on neural differentiation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 134:112634. [PMID: 35577691 DOI: 10.1016/j.msec.2021.112634] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 12/19/2021] [Accepted: 12/21/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND Recorded advancements in nerve tissue regeneration have still not provided satisfactory results, and complete physiological recovery is not assured. The engineering of nanofibrous scaffolds provides a suitable platform for stem cell transplantation by controlling cell proliferation and differentiation to replace lost cells. In this study, a conductive scaffold was fabricated by in situ synthesis of gold nanoparticles (Au-NPs) on electrospun polycaprolactone/chitosan nanofibrous scaffolds and its effect on neural differentiation of mesenchymal stem cells was investigated. METHOD The conductive scaffold was prepared using polycaprolactone/chitosan solution containing soluble Au ions by electrospinning approach. In situ synthesis of Au-NPs was conducted using two reducing agents, Tetrakis(hydroxymethyl)phosphonium chloride (THPC) as an organophosphorus compound and formaldehyde, and also different reduction times. Morphology and distribution of the Au-NPs on the nanofibrous scaffolds were assessed using field emission scanning electron microscopy (FE-SEM) and energy dispersed X-ray spectroscopy (EDX). The hydrophilicity and biocompatibility of the scaffolds were determined by water contact angle and MTT assays respectively. The characterization of the scaffolds was proceeded by testing the porosity, tensile strength and electrical conductivity. Also, the scaffold's ability to support neural differentiation of mesenchymal stem cells was evaluated by immune-staining/blotting of Beta tubulin III. RESULTS & CONCLUSION FE-SEM and EDX results demonstrated the uniform distribution of Au-NPs on electrospun nanofibers made of a combination of polycaprolactone and chitosan (PCL/CS). We found that electrical conductivity of the scaffolds fabricated using THPC for 4 days and formaldehyde for 7 days was in the range of electrical conductivity of the scaffolds suitable for nerve regeneration. Contact angle measurements showed the effect of Au-NPs on the hydrophilic properties of the scaffolds, where the scaffold showed the porosity of 50% in the presence of Au-NPs. Au-NPs decoration on the scaffold decreased the mechanical properties with the ultimate strength of 14 (MPa). In vitro assessment demonstrated the potential of the fabricated conductive scaffold to enhance the attachment and proliferation of fibroblast cells, and differentiation potential of mesenchymal stem cells toward neuron-like cells. This designed scaffold holds promise as a future carrier and delivery platform in nerve tissue engineering.
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Affiliation(s)
- Milad Rahimzadegan
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, and Toxicology and Poisoning Research Centre, Tehran University of Medical Sciences, Tehran, Iran
| | - Qazal Mohammadi
- Department of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Mehdi Shafieian
- Department of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Omid Sabzevari
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, and Toxicology and Poisoning Research Centre, Tehran University of Medical Sciences, Tehran, Iran..
| | - Zahra Hassannejad
- Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran; Pediatric Urology and Regenerative Medicine Research Center, Gene, Cell & Tissue Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
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Sarhan A, Fahmy T. Optical Properties, Antibacterial Activity, and Relaxation Behavior Investigation of Chitosan/Green Synthesized Silver Nanoparticles by Thermally Stimulated Depolarization Current Technique. POLYMER SCIENCE SERIES B 2021. [DOI: 10.1134/s1560090421050110] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Synthesis of Chitosan-Silver Nanoparticle Composite Spheres and Their Antimicrobial Activities. Polymers (Basel) 2021; 13:polym13223990. [PMID: 34833288 PMCID: PMC8620293 DOI: 10.3390/polym13223990] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 11/12/2021] [Accepted: 11/15/2021] [Indexed: 11/17/2022] Open
Abstract
Synthesis of silver nanoparticles–chitosan composite particles sphere (AgNPs-chi-spheres) has been completed and its characterization was fulfilled by UV–vis spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and zetasizer nano. UV–vis spectroscopy characterization showed that AgNPs-chi-spheres gave optimum absorption at a wavelength of 410 nm. The XRD spectra showed that the structure of AgNPs-chi-spheres were crystalline and spherical. Characterization by SEM showed that AgNPs-chi-spheres, with the addition of 20% of NaOH, resulted in the lowest average particle sizes of 46.91 nm. EDX analysis also showed that AgNPs-chi-spheres, with the addition of a 20% NaOH concentration, produced particles with regular spheres, a smooth and relatively nonporous structure. The analysis using zetasizer nano showed that the zeta potential value and the polydispersity index value of the AgNPs-chi-sphere tended to increase with an increased NaOH concentration. The results of the microbial activity screening showed that the AgNP-chi-Spheres with highest concentration of NaOH, produced the highest inhibition zone diameters against S. aureus, E. coli, and C. albicans, with inhibition zone diameters of 19.5, 18.56, and 12.25 nm, respectively.
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Tang Y, Li S, Hu L, Sun X, Zhang B, Ji W, Ma L, Qian W, Kang A, Zhu D. Hybrid Poly(AMPS-CS)-Au Microneedle Arrays to Enrich Metabolites from Skin for Early Disease Diagnosis. Adv Healthc Mater 2021; 10:e2100764. [PMID: 34028989 DOI: 10.1002/adhm.202100764] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Indexed: 12/15/2022]
Abstract
Recently, some metabolites in skin interstitial fluid (SIF) have become emerging re×sources for early disease diagnosis. However, their low level in SIF and difficulty to sampling are the biggest obstacle to further potential application. Here, a swellable microneedle array patch (MNAP) with high mechanical strength is presented, and the rapid enrichment of positively charged metabolites is achieved. The MNAP is fabricated by poly (chondroitin sulfate-acrylamido-2-methylpropane sulfonic acid)-gold nanoparticles (GNPs) composites via a micro-molding. The negatively charged copolymer hydrogel not only enrich positively charged metabolites, but also provide swellable capacity. The in situ synthesis of GNPs in the process of copolymerization make the GNPs cross-link to the hydrogel, which further enhance the MNAP mechanical strength and enrichment efficiency for positively charged metabolites. By using the MNAP, around 5 mg SIF in 10 min from the high fat/cholecalciferol/methimazole-induced atherogenesis rat is extracted and 23 metabolites including 13 quaternary ammonium cationic compounds can be detected and quantified by using a LC-QTOF-MS. Dysregulated L-carnitine and choline metabolism are discovered a week earlier in the SIF than in the serum, achieving early diagnosis of the metabolism syndrome disease. This MNAP also helps users complete home sampling for early disease diagnosis and monitoring.
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Affiliation(s)
- Yuyin Tang
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing Jiangsu 210023 P. R. China
| | - Su Li
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing Jiangsu 210023 P. R. China
| | - Linyu Hu
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing Jiangsu 210023 P. R. China
| | - Xuetong Sun
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing Jiangsu 210023 P. R. China
| | - Bei Zhang
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing Jiangsu 210023 P. R. China
| | - Wenwen Ji
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing Jiangsu 210023 P. R. China
| | - Lijuan Ma
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing Jiangsu 210023 P. R. China
| | - Wenhui Qian
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing Jiangsu 210023 P. R. China
| | - An Kang
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing Jiangsu 210023 P. R. China
| | - Dong Zhu
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing Jiangsu 210023 P. R. China
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Bashal AH, Khalafalla M, Abdel-Basset TA. Dielectric Properties and AC Conductivity of Chitosan-La2O3 Nanocomposite. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2021. [DOI: 10.1007/s13369-020-04958-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Synthesis of functionalized silk-coated chitosan-gold nanoparticles and microparticles for target-directed delivery of antitumor agents. Carbohydr Polym 2021; 258:117659. [PMID: 33593545 DOI: 10.1016/j.carbpol.2021.117659] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 01/07/2021] [Accepted: 01/12/2021] [Indexed: 01/05/2023]
Abstract
Chemically modified biopolymers derived nanomaterials have shown great potential in drug delivery and live-cell imaging. We have developed two materials, doxorubicin-loaded chitosan-gold nanoparticles and beads, both embedded with functionalized silk fibroin. Nanoparticles with size 8 ± 3 nm were synthesized using chitosan as reducing and stabilizing agent. Beads with 900-1000 μm size were formulated by the ionic gelation technique. Both the materials were coated with functionalized silk fibroin for targeted and sustained drug release properties. The coated materials showed retarded drug release compared to the uncoated ones. The cytotoxicity was assessed in HeLa cell lines, which demonstrated a maximum dose-dependent decrease in cell viability for the cells treated with folate conjugated silk fibroin coated nanoparticles. The live-cell imaging of the nanoparticles unveiled the increased cellular uptake of the coated materials by seven folds than the uncoated ones. Thus, functionalized silk coated materials can be effective drug delivery tools for targeted and sustained drug release.
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Bakr RO, Amer RI, Attia D, Abdelhafez MM, Al-Mokaddem AK, El-Gendy AENG, El-Fishawy AM, Fayed MAA, Gad SS. In-vivo wound healing activity of a novel composite sponge loaded with mucilage and lipoidal matter of Hibiscus species. Biomed Pharmacother 2021; 135:111225. [PMID: 33434856 DOI: 10.1016/j.biopha.2021.111225] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/30/2020] [Accepted: 12/31/2020] [Indexed: 02/06/2023] Open
Abstract
Many researches have been undergone to hasten the natural wound healing process. In this study, several Hibiscus species (leaves) were extracted with petroleum ether, methanol, and their mucilage was separated. All the tested species extracts were assessed for their viability percentage using the water-soluble tetrazolium. H.syriacus was the plant of choice to be incorporated in a new drug delivery system and evaluated for its wound healing activity. H.syriacus petroleum ether extract (PEE) showed a high percentage of palmitic and oleic acids while its mucilage demonstrated high glucosamine and galacturonic acid. It was selected to be formulated and pharmaceutically evaluated into three different composite sponges using chitosan in various ratios. Fourier-transformed infrared spectroscopy investigated the chemical interaction between the utilized sponges' ingredients. Morphological characteristics were evaluated using scanning electron microscopy. H.syriacus composite sponge of mucilage: chitosan (1:5) was loaded with three different concentrations of PEE. Medicated formulations were assessed in rat model of excision wound model. The wound healing ability was clearly proved by the clinical acceleration, histopathological examination, and modulation of correlated inflammatory parameters as tumor necrosis factor in addition to vascular endothelial growth factor suggesting a promising valuable candidate that supports the management of excision wounds using single-dose preparation.
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Affiliation(s)
- Riham O Bakr
- Department of Pharmacognosy, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), 11787, Giza, Egypt.
| | - Reham I Amer
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt; Department of Pharmaceutics, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), Giza, Egypt
| | - Dalia Attia
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, The British University in Egypt (BUE), Cairo, Egypt
| | - Mai M Abdelhafez
- Department of Pharmacology, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), Giza, Egypt
| | - Asmaa K Al-Mokaddem
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, 12211 Giza, Egypt
| | - Abd El-Nasser G El-Gendy
- Department of Medicinal and Aromatic Plants Research, National Research Center, Giza, 12622, Egypt
| | - Ahlam M El-Fishawy
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, 11562 Giza, Egypt
| | - Marwa A A Fayed
- Department of Pharmacognosy, Faculty of Pharmacy, University of Sadat City, 32897, Egypt
| | - Sameh S Gad
- Department of Pharmacology, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), Giza, Egypt
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Ceja I, González-Íñiguez KJ, Carreón-Álvarez A, Landazuri G, Barrera A, Casillas JE, Fernández-Escamilla VVA, Aguilar J. Characterization and Electrical Properties of PVA Films with Self-Assembled Chitosan-AuNPs/SWCNT-COOH Nanostructures. MATERIALS 2020; 13:ma13184138. [PMID: 32957600 PMCID: PMC7560243 DOI: 10.3390/ma13184138] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/11/2020] [Accepted: 09/14/2020] [Indexed: 11/16/2022]
Abstract
Nanostructured films with electrical conductivity in the semiconductor region were prepared in a polymeric matrix of poly(vinyl alcohol) (PVA) with nanostructures of chitosan-gold nanoparticles (AuNPs)/single-wall carbon nanotubes carboxylic acid functionalized (SWCNT-COOH) (chitosan-AuNPs/SWCNT-COOH) self-assembled. Dispersion light scattering (DLS) was used to determine the average particle sizes of chitosan-AuNPs, z-average particle size (Dz) and number average particle size (Dn), and the formation of crystalline domains of AuNPs was demonstrated by X-ray diffraction (XRD) patterns and observed by means of transmission electron microscopy (TEM). The electrostatic interaction was verified by Fourier transform infrared spectroscopy (FTIR). The electrical conductivity of PVA/chitosan-AuNPs/SWCNT-COOH was determined by the four-point technique and photocurrent. The calculated Dn values of the chitosan-AuNPs decreased as the concentration of gold (III) chloride trihydrate (HAuCl4·3H2O) increased: the concentrations of 0.4 and 1.3 mM were 209 and 90 nm, respectively. Average crystal size (L) and number average size (D) of the AuNPs were calculated in the range of 13 to 24 nm. Electrical conductivity of PVA/chitosan-AuNPs/SWCNT-COOH films was 3.7 × 10-5 σ/cm determined by the four-point technique and 6.5 × 10-4 σ/cm by photocurrent for the SWCNT-COOH concentration of 0.5 wt.% and HAuCl4·3H2O concentration of 0.4 mM. In this investigation, the protonation of the amine group of chitosan is fundamental to prepare PVA films with nanostructures of self-assembled chitosan-AuNPs/SWCNT-COOH.
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Affiliation(s)
- Israel Ceja
- Departamento de Física, Centro Universitario de Ciencias Exactas e Ingeniería, Universidad de Guadalajara, Blvd. M. García Barragán # 1421, C.P. 44430 Guadalajara, Mexico;
| | - Karla Josefina González-Íñiguez
- Departamento de Química, Centro Universitario de Ciencias Exactas e Ingeniería, Universidad de Guadalajara, Blvd. M. García Barragán # 1421, C.P. 44430 Guadalajara, Mexico;
| | - Alejandra Carreón-Álvarez
- Departamento de Ciencias Naturales y Exactas, Centro Universitario de los Valles, Universidad de Guadalajara, Carretera Guadalajara-Ameca Km. 45.5, C.P. 46600 Ameca, Mexico;
| | - Gabriel Landazuri
- Departamento de Ingeniería Química, Centro Universitario de Ciencias Exactas e Ingeniería, Universidad de Guadalajara, Blvd. M. García Barragán # 1421, C.P. 44430 Guadalajara, Mexico;
| | - Arturo Barrera
- Departamento de Ciencias Básicas, Centro Universitario de la Ciénega, Universidad de Guadalajara, Avenida Universidad No. 1115, C.P. 47810 Ocotlán, Mexico;
| | - José Eduardo Casillas
- Departamento de Ciencias Tecnológicas, Centro Universitario de la Ciénega, Universidad de Guadalajara, Avenida Universidad No. 1115, C.P. 47810 Ocotlán, Mexico; (J.E.C.); (V.V.A.F.-E.)
| | - Víctor Vladimir A. Fernández-Escamilla
- Departamento de Ciencias Tecnológicas, Centro Universitario de la Ciénega, Universidad de Guadalajara, Avenida Universidad No. 1115, C.P. 47810 Ocotlán, Mexico; (J.E.C.); (V.V.A.F.-E.)
| | - Jacobo Aguilar
- Departamento de Ciencias Tecnológicas, Centro Universitario de la Ciénega, Universidad de Guadalajara, Avenida Universidad No. 1115, C.P. 47810 Ocotlán, Mexico; (J.E.C.); (V.V.A.F.-E.)
- Correspondence:
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Douglas-Gallardo OA, Christensen CA, Strumia MC, Pérez MA, Gomez CG. Physico-chemistry of a successful micro-reactor: Random coils of chitosan backbones used to synthesize size-controlled silver nanoparticles. Carbohydr Polym 2019; 225:115241. [DOI: 10.1016/j.carbpol.2019.115241] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 08/22/2019] [Accepted: 08/22/2019] [Indexed: 01/27/2023]
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Choi M, Hasan N, Cao J, Lee J, Hlaing SP, Yoo JW. Chitosan-based nitric oxide-releasing dressing for anti-biofilm and in vivo healing activities in MRSA biofilm-infected wounds. Int J Biol Macromol 2019; 142:680-692. [PMID: 31622708 DOI: 10.1016/j.ijbiomac.2019.10.009] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 09/19/2019] [Accepted: 10/01/2019] [Indexed: 12/19/2022]
Abstract
Bacterial biofilms on wounds impair the healing process and often lead to chronic wounds. Chitosan is a well-known biopolymer with antimicrobial and anti-biofilm effects. S-nitrosoglutathione (GSNO) has been identified as a promising nitric oxide (NO) donor to defend against pathogenic biofilms and enhance wound healing activities. In this study, we prepared NO-releasing chitosan film (CS/NO film) and evaluated its anti-biofilm activity and in vivo wound healing efficacy against methicillin-resistant Staphylococcus aureus (MRSA) biofilm-infected wounds in diabetic mice. The in vitro release study showed sustained release of NO over 3 days in simulated wound fluid. The CS/NO film significantly enhanced antibacterial activity against MRSA by > 3 logs reduction in bacterial viability. Moreover, CS/NO film exhibited a 3-fold higher anti-biofilm activity than the control and CS film. In in vivo MRSA biofilm-infected wounds, the CS/NO film-treated group showed faster biofilm dispersal, wound size reduction, epithelialization rates, and collagen deposition than the untreated and CS film-treated groups. Therefore, the CS/NO film investigated in this study could be a promising approach for the treatment of MRSA biofilm-infected wounds.
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Affiliation(s)
- Moonjeong Choi
- College of Pharmacy, Pusan National University, Busan 609-735, South Korea
| | - Nurhasni Hasan
- College of Pharmacy, Pusan National University, Busan 609-735, South Korea
| | - Jiafu Cao
- College of Pharmacy, Pusan National University, Busan 609-735, South Korea
| | - Juho Lee
- College of Pharmacy, Pusan National University, Busan 609-735, South Korea
| | - Shwe Phyu Hlaing
- College of Pharmacy, Pusan National University, Busan 609-735, South Korea
| | - Jin-Wook Yoo
- College of Pharmacy, Pusan National University, Busan 609-735, South Korea.
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16
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Chitosan-capped gold nanoparticles for indicating temperature abuse in frozen stored products. NPJ Sci Food 2019; 3:2. [PMID: 31304274 PMCID: PMC6550203 DOI: 10.1038/s41538-019-0034-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 01/10/2019] [Indexed: 11/14/2022] Open
Abstract
The present study aimed to optimize the conditions for the synthesis of gold nanoparticles (AuNP) using chitosan and to assess its effectiveness as temperature threshold indication for frozen storage conditions. Chitosan concentration of 0.25% and temperature of 90 °C for 15 min was optimum for synthesizing AuNP. The maximum absorbance (λmax) was observed at 530 and 540 nm for 0.125% and 0.25% chitosan, respectively, indicating shifting of peak toward longer wavelengths (red shift) with increasing chitosan concentration indicating larger AuNPs. A prominent absorption peak at 1367 cm−1 by Fourier transform-infrared (FTIR) spectrum corresponding to C−C stretching of the glucosamine group of chitosan indicates the chitosan capping on the AuNP. Higher peak intensity and a peak shift toward shorter wavelength were observed for AuNPs exposed to frozen temperature abused conditions. Distinctly clear visible color variation from cherry red to gray indicates its application as temperature abuse indicator in frozen products. Thermal history indicators (THI) attached on packages can tell us the storage temperature history of food and pharmaceutical products, which influences their quality and safety a lot. Metal nanoparticles are widely considered as THI. Mohan from ICAR-Central Institute of Fisheries Technology, India and coworkers reported a temperature abuse indictor based on chitosan capped gold nanoparticles. Chitosan was used as a reducing and stabilizing agent in the synthesis of gold nanoparticles. The final size of Au nanoparticles was determined by the used concentration of chitosan. The chitosan capped gold nanoparticles were capable of altering color and color intensity when exposed to temperature fluctuations. This can be attributed to the aggregation of the gold nanoparticles, alteration in shape and size at frozen temperature abused conditions.
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17
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Ünal ÖF, Yeşildağ A, Ekinci D. Synthesis of gold nanoparticles on diazonium-generated heteroaryl films and their electrocatalytic activities. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.09.083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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18
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Saderi N, Rajabi M, Akbari B, Firouzi M, Hassannejad Z. Fabrication and characterization of gold nanoparticle-doped electrospun PCL/chitosan nanofibrous scaffolds for nerve tissue engineering. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:134. [PMID: 30120577 DOI: 10.1007/s10856-018-6144-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 08/01/2018] [Indexed: 06/08/2023]
Abstract
In the field of nerve tissue engineering, nanofibrous scaffolds could be a promising candidate when they are incorporated with electrical cues. Unique physico-chemical properties of gold nanoparticles (AuNPs) make them an appropriate component for increasing the conductivity of scaffolds to enhance the electrical signal transfer between neural cells. The aim of this study was fabrication of AuNPs-doped nanofibrous scaffolds for peripheral nerve tissue engineering. Polycaprolactone (PCL)/chitosan mixtures with different concentrations of chitosan (0.5, 1 and 1.5) were electrospun to obtain nanofibrous scaffolds. AuNPs were synthesized by the reduction of HAuCl4 using chitosan as a reducing/stabilizing agent. A uniform distribution of AuNPs with spherical shape was achieved throughout the PCL/chitosan matrix. The UV-Vis spectrum revealed that the amount of gold ions absorbed by nanofibrous scaffolds is in direct relationship with their chitosan content. Evaluation of electrical property showed that inclusion of AuNPs significantly enhanced the conductivity of scaffolds. Finally, after 5 days of culture, biological response of Schwann cells on the AuNPs-doped scaffolds was superior to that on as-prepared scaffolds in terms of improved cell attachment and higher proliferation. It can be concluded that the prepared AuNPs-doped scaffolds can be used to promote peripheral nerve regeneration.
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Affiliation(s)
- Narges Saderi
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | - Mina Rajabi
- Department of Polymer, School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Babak Akbari
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | - Masoumeh Firouzi
- Tissue Repair Lab, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
| | - Zahra Hassannejad
- Pediatric Urology and Regenerative Medicine Research Center, Children's Hospital Medical Center, Tehran University of Medical Sciences, Tehran, Iran.
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19
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20
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Chitosan/gelatin as a new nano-carrier system for calcium hydroxide delivery in endodontic applications: Development, characterization and process optimization. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 92:540-546. [PMID: 30184780 DOI: 10.1016/j.msec.2018.07.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Revised: 06/11/2018] [Accepted: 07/01/2018] [Indexed: 11/21/2022]
Abstract
The main aim of this study is preparation, optimization and in vitro characterization of Chitosan/Gelatin nano-carriers (NCs) for calcium hydroxide (CH) to improve its therapeutic potential. The designed system can be used in the endodontic applications demanding a sustained release of calcium and hydroxyl ions. Modeling and optimization of CH loaded polymeric NCs were performed using response surface methodology (RSM) based on central composite surface statistical design. The effect of Chitosan concentration (0.1-1% w/v), Gelatin concentration (0.1-1% w/v) and CH concentration (0.05-0.4% w/v) on the particle size, polydispersity index (PDI), drug loading (DL) and encapsulation efficiency (EE) of CH loaded polymeric NCs were investigated. Optimized CH loaded polymeric NCs formulation which obtained using RSM showed spherical and smooth surface with a particle size of 292 nm, PDI of 0.32, DL of 88.8% and EE of 99%. Optimized formulation was evaluated for in vitro calcium ion release in phosphate buffer solution (PBS) at pH 7.4 for 14 days. The presence of hydrogen bonding and some intermolecular interactions between Chitosan/Gelatin polymeric materials were confirmed using Fourier transform infrared (FTIR) analysis. These interactions enable Chitosan/Gelatin NCs to load CH and maintain sustained release of Calcium ions from CH during experimental period.
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21
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Hasan A, Waibhaw G, Saxena V, Pandey LM. Nano-biocomposite scaffolds of chitosan, carboxymethyl cellulose and silver nanoparticle modified cellulose nanowhiskers for bone tissue engineering applications. Int J Biol Macromol 2018; 111:923-934. [DOI: 10.1016/j.ijbiomac.2018.01.089] [Citation(s) in RCA: 144] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 01/05/2018] [Accepted: 01/13/2018] [Indexed: 12/17/2022]
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22
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Synthesis of chitosan mediated silver nanoparticles (Ag NPs) for potential antimicrobial applications. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.flm.2018.04.002] [Citation(s) in RCA: 154] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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Scarano S, Pascale E, Palladino P, Fratini E, Minunni M. Determination of fermentable sugars in beer wort by gold nanoparticles@polydopamine: A layer-by-layer approach for Localized Surface Plasmon Resonance measurements at fixed wavelength. Talanta 2018; 183:24-32. [PMID: 29567171 DOI: 10.1016/j.talanta.2018.02.044] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 02/08/2018] [Accepted: 02/10/2018] [Indexed: 11/26/2022]
Abstract
Polydopamine decorated in-situ with Localized Surface Plasmon Resonance (LSPR)-active gold nanoparticles (AuNPs) may extend the applicability of nanoplasmonic materials to original and innovative applications in several fields. Here we report the modification of disposable UV-Vis polystyrene cuvettes with AuNPs@PDA for refractive index LSPR-based measurements. An original layer-by-layer deposition method of PDA followed by AuNPs growth is here developed, showing linear correlation between PDA thickness and optical properties. In particular, the modulation from wavelength sensitivity toward absorbance sensitivity is obtained, allowing measurements at fixed wavelength (578 nm). As applicative example of the photonic cuvettes, the measurement of fermentable sugars in beer wort is here reported. The analytical performance of our approach has been directly compared to portable refractometer of reference, displaying excellent results in terms of the precise estimation of sugars in beer wort (expressed in degrees Brix), reproducibility and sensitivity. The approach may be extended to other materials of interest in LSPR based optical sensors, e.g. optical fibers.
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Affiliation(s)
- S Scarano
- Department of Chemistry, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy; CSGI, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy
| | - E Pascale
- Department of Chemistry, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy; CSGI, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy
| | - P Palladino
- Department of Chemistry, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy
| | - E Fratini
- Department of Chemistry, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy; CSGI, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy
| | - M Minunni
- Department of Chemistry, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy; CSGI, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy.
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24
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MubarakAli D, LewisOscar F, Gopinath V, Alharbi NS, Alharbi SA, Thajuddin N. An inhibitory action of chitosan nanoparticles against pathogenic bacteria and fungi and their potential applications as biocompatible antioxidants. Microb Pathog 2018; 114:323-327. [DOI: 10.1016/j.micpath.2017.11.043] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 11/22/2017] [Accepted: 11/23/2017] [Indexed: 12/18/2022]
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25
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Sun L, Li J, Cai J, Zhong L, Ren G, Ma Q. One pot synthesis of gold nanoparticles using chitosan with varying degree of deacetylation and molecular weight. Carbohydr Polym 2017; 178:105-114. [DOI: 10.1016/j.carbpol.2017.09.032] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 09/05/2017] [Accepted: 09/08/2017] [Indexed: 02/02/2023]
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26
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Template- and Additive-free Electrosynthesis and Characterization of Spherical Gold Nanoparticles on Hydrophobic Conducting Polydimethylsiloxane. Chem Asian J 2017; 12:1615-1624. [DOI: 10.1002/asia.201700444] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 04/26/2017] [Indexed: 01/21/2023]
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27
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Ayad MM, Amer WA, Kotp MG, Minisy IM, Rehab AF, Kopecký D, Fitl P. Synthesis of silver-anchored polyaniline–chitosan magnetic nanocomposite: a smart system for catalysis. RSC Adv 2017. [DOI: 10.1039/c7ra02575k] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel and smart four component system composed of chitosan, polyaniline, magnetite and silver was exploited for catalysis.
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Affiliation(s)
- Mohamad M. Ayad
- Chemistry Department
- Faculty of Science
- Tanta University
- Tanta 31527
- Egypt
| | - Wael A. Amer
- Chemistry Department
- Faculty of Science
- Tanta University
- Tanta 31527
- Egypt
| | - Mohammed G. Kotp
- Chemistry Department
- Faculty of Science
- Tanta University
- Tanta 31527
- Egypt
| | - Islam M. Minisy
- Chemistry Department
- Faculty of Science
- Tanta University
- Tanta 31527
- Egypt
| | - Ahmed F. Rehab
- Chemistry Department
- Faculty of Science
- Tanta University
- Tanta 31527
- Egypt
| | - Dušan Kopecký
- Department of Physics and Measurements
- Faculty of Chemical Engineering
- University of Chemistry and Technology
- 166 28 Prague
- Czech Republic
| | - Přemysl Fitl
- Department of Physics and Measurements
- Faculty of Chemical Engineering
- University of Chemistry and Technology
- 166 28 Prague
- Czech Republic
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28
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Bird SM, El-Zubir O, Rawlings AE, Leggett GJ, Staniland SS. A novel design strategy for nanoparticles on nanopatterns: interferometric lithographic patterning of Mms6 biotemplated magnetic nanoparticles. JOURNAL OF MATERIALS CHEMISTRY. C 2016; 4:3948-3955. [PMID: 27358738 PMCID: PMC4894075 DOI: 10.1039/c5tc03895b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 12/21/2015] [Indexed: 06/05/2023]
Abstract
Nanotechnology demands the synthesis of highly precise, functional materials, tailored for specific applications. One such example is bit patterned media. These high-density magnetic data-storage materials require specific and uniform magnetic nanoparticles (MNPs) to be patterned over large areas (cm2 range) in exact nanoscale arrays. However, the realisation of such materials for nanotechnology applications depends upon reproducible fabrication methods that are both precise and environmentally-friendly, for cost-effective scale-up. A potentially ideal biological fabrication methodology is biomineralisation. This is the formation of inorganic minerals within organisms, and is known to be highly controlled down to the nanoscale whilst being carried out under ambient conditions. The magnetotactic bacterium Magnetospirillum magneticum AMB-1 uses a suite of dedicated biomineralisation proteins to control the formation of magnetite MNPs within their cell. One of these proteins, Mms6, has been shown to control formation of magnetite MNPs in vitro. We have previously used Mms6 on micro-contact printed (μCP) patterned self-assembled monolayer (SAM) surfaces to control the formation and location of MNPs in microscale arrays, offering a bioinspired and green-route to fabrication. However, μCP cannot produce patterns reliably with nanoscale dimensions, and most alternative nanofabrication techniques are slow and expensive. Interferometric lithography (IL) uses the interference of laser light to produce nanostructures over large areas via a simple process implemented under ambient conditions. Here we combine the bottom-up biomediated approach with a top down IL methodology to produce arrays of uniform magnetite MNPs (86 ± 21 nm) with a period of 357 nm. This shows a potentially revolutionary strategy for the production of magnetic arrays with nanoscale precision in a process with low environmental impact, which could be scaled readily to facilitate large-scale production of nanopatterned surface materials for technological applications.
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Affiliation(s)
- S M Bird
- University of Sheffield , Department of Chemistry , Dainton Building , Sheffield , S3 7HF , UK .
| | - O El-Zubir
- University of Sheffield , Department of Chemistry , Dainton Building , Sheffield , S3 7HF , UK . ; University of Newcastle , Chemical Nanoscience Laboratories , School of Chemistry , Bedson Building , Newcastle Upon Tyne , NE1 7RU , UK
| | - A E Rawlings
- University of Sheffield , Department of Chemistry , Dainton Building , Sheffield , S3 7HF , UK .
| | - G J Leggett
- University of Sheffield , Department of Chemistry , Dainton Building , Sheffield , S3 7HF , UK .
| | - S S Staniland
- University of Sheffield , Department of Chemistry , Dainton Building , Sheffield , S3 7HF , UK .
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29
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Bird SM, Galloway JM, Rawlings AE, Bramble JP, Staniland SS. Taking a hard line with biotemplating: cobalt-doped magnetite magnetic nanoparticle arrays. NANOSCALE 2015; 7:7340-7351. [PMID: 25825205 DOI: 10.1039/c5nr00651a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Rapid advancements made in technology, and the drive towards miniaturisation, means that we require reliable, sustainable and cost effective methods of manufacturing a wide range of nanomaterials. In this bioinspired study, we take advantage of millions of years of evolution, and adapt a biomineralisation protein for surface patterning of biotemplated magnetic nanoparticles (MNPs). We employ soft-lithographic micro-contact printing to pattern a recombinant version of the biomineralisation protein Mms6 (derived from the magnetotactic bacterium Magnetospirillum magneticum AMB-1). The Mms6 attaches to gold surfaces via a cysteine residue introduced into the N-terminal region. The surface bound protein biotemplates highly uniform MNPs of magnetite onto patterned surfaces during an aqueous mineralisation reaction (with a mean diameter of 90 ± 15 nm). The simple addition of 6% cobalt to the mineralisation reaction maintains the uniformity in grain size (with a mean diameter of 84 ± 14 nm), and results in the production of MNPs with a much higher coercivity (increased from ≈ 156 Oe to ≈ 377 Oe). Biotemplating magnetic nanoparticles on patterned surfaces could form a novel, environmentally friendly route for the production of bit-patterned media, potentially the next generation of ultra-high density magnetic data storage devices. This is a simple method to fine-tune the magnetic hardness of the surface biotemplated MNPs, and could easily be adapted to biotemplate a wide range of different nanomaterials on surfaces to create a range of biologically templated devices.
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Affiliation(s)
- Scott M Bird
- University of Sheffield, Department of Chemistry, Dainton Building, Sheffield, S3 7HF, UK.
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30
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Hasan S, Ghosh A, Race K, Schreiber R, Prelas M. Dispersion of FeOOH on Chitosan Matrix for Simultaneous Removal of As(III) and As(V) from Drinking Water. SEP SCI TECHNOL 2014. [DOI: 10.1080/01496395.2014.949774] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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31
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Hsu KC, Lee CF, Tseng WC, Chao YY, Huang YL. Selective and eco-friendly method for determination of mercury(II) ions in aqueous samples using an on-line AuNPs–PDMS composite microfluidic device/ICP-MS system. Talanta 2014; 128:408-13. [DOI: 10.1016/j.talanta.2014.05.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 05/02/2014] [Accepted: 05/05/2014] [Indexed: 01/21/2023]
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32
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Wu Y, Zuo F, Lin Y, Zhou Y, Zheng Z, Ding X. Green and Facile Synthesis of Gold Nanoparticles Stabilized by Chitosan. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2014. [DOI: 10.1080/10601325.2014.893142] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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33
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Ramasamy RP, Maliyekkal SM. Formation of gold nanoparticles upon chitosan leading to formation and collapse of gels. NEW J CHEM 2014. [DOI: 10.1039/c3nj00603d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Wang Z, Zhai S, Zhai B, Xiao Z, Zhang F, An Q. In situ preparation of uniform Ag NPs onto multifunctional Fe3O4@SN/HPW@CG towards efficient reduction of 4-nitrophenol. NEW J CHEM 2014. [DOI: 10.1039/c4nj00094c] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Magnetic chitosan-based core–shell composites were prepared employing phosphotungstic acid as a layer-linker and chitosan as a green reducing agent.
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Affiliation(s)
- Zhenzhen Wang
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034, China
| | - Shangru Zhai
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034, China
| | - Bin Zhai
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034, China
| | - Zuoyi Xiao
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034, China
| | - Feng Zhang
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034, China
| | - Qingda An
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034, China
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35
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In situ photochemical generation of silver and gold nanoparticles on chitosan. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2012.12.036] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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36
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Li S, Wang L, Li Y, Zhu X, Zhong L, Lu L, Zhang W, Liu B, Xie G, Feng W. Electrochemical determination of BCR/ABL fusion gene based on in situ synthesized gold nanoparticles and cerium dioxide nanoparticles. Colloids Surf B Biointerfaces 2013; 112:344-9. [DOI: 10.1016/j.colsurfb.2013.07.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Revised: 07/10/2013] [Accepted: 07/11/2013] [Indexed: 01/05/2023]
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37
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Synthesis and characterization of gold nanoparticles supported on thiol functionalized chitosan for solvent-free oxidation of cyclohexene with molecular oxygen. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcata.2013.08.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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38
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Bovero E, Magee KEA, Young EC, Menon C. Dispersion of Silver Nanoparticles into Polymer Matrix Dry Adhesives to Achieve Antibacterial Properties, Increased Adhesion, and Optical Absorption. MACROMOL REACT ENG 2013. [DOI: 10.1002/mren.201300110] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Enrico Bovero
- Menrva Lab., School of Engineering; Simon Fraser University; 8888 University Drive Burnaby BC, V5A 1S6 Canada
| | - Kaylee E. A. Magee
- Department of Molecular Biology and Biochemistry; Simon Fraser University; 8888 University Drive Burnaby BC, V5A 1S6 Canada
| | - Edgar C. Young
- Department of Molecular Biology and Biochemistry; Simon Fraser University; 8888 University Drive Burnaby BC, V5A 1S6 Canada
| | - Carlo Menon
- Menrva Lab., School of Engineering; Simon Fraser University; 8888 University Drive Burnaby BC, V5A 1S6 Canada
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39
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De Luca A, Depalo N, Fanizza E, Striccoli M, Curri ML, Infusino M, Rashed AR, La Deda M, Strangi G. Plasmon mediated super-absorber flexible nanocomposites for metamaterials. NANOSCALE 2013; 5:6097-6105. [PMID: 23722253 DOI: 10.1039/c3nr00988b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A flexible host has been selected to achieve, for the first time, functional nanocomposites based on CdSe@ZnS core-shell type quantum dots (QDs) and Au nanoparticles (NPs), simultaneously dispersed in a polymer matrix. Coherent interactions between QDs and plasmonic Au NPs embedded in PDMS films have been demonstrated to lead to a relevant enhancement of the absorption cross-section of the QDs, remarkably modifying the optical response of the entire system. Optical and time resolved spectroscopy studies revealed an active gain-plasmon feedback behind the super-absorbing overall effect.
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Affiliation(s)
- Antonio De Luca
- CNR IPCF UOS Cosenza, Licryl Laboratory, Department of Physics, University of Calabria, 87036 Rende, Italy.
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40
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Marsich E, Bellomo F, Turco G, Travan A, Donati I, Paoletti S. Nano-composite scaffolds for bone tissue engineering containing silver nanoparticles: preparation, characterization and biological properties. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:1799-807. [PMID: 23553569 DOI: 10.1007/s10856-013-4923-4] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Accepted: 03/24/2013] [Indexed: 05/20/2023]
Abstract
In this study nano-composite scaffolds to be used as bone grafts have been endowed with antibacterial properties owing to the presence of silver nanoparticles. The alginate/hydroxyapatite composite scaffolds were prepared by internal gelation followed by a freeze-drying procedure to obtain a porous structure. The nanoparticles were prepared in presence of a lactose modified-chitosan and this colloidal solution was adsorbed on the scaffolds by exploiting electrostatic interactions. The adsorption and release of the silver from the composite scaffold was measured by ICP-AES and spectrofluorimetry measurements. Micro-computed tomography analysis of the scaffolds showed a homogeneous porous structure with average pore sizes of 341.5 μm and porosity of 80 %. In vitro biological tests (MTS and killing kinetics assays) demonstrated that silver does not affect the ability of the scaffolds to promote osteoblasts proliferation and that at the same time it exerts a strong bactericidal effect against both Gram+ and Gram- bacterial strains. Overall, the combined results indicate that these biocompatible antimicrobial scaffolds possess ideal characteristics for tissue engineering applications.
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Affiliation(s)
- Eleonora Marsich
- Department of Medical, Surgical and Health Sciences, University of Trieste, Piazza dell'Ospitale 1, 34129, Trieste, Italy.
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Galloway JM, Bird SM, Bramble JP, Critchley K, Staniland SS. Biotemplating Magnetic Nanoparticles on Patterned Surfaces for Potential Use in Data Storage. ACTA ACUST UNITED AC 2013. [DOI: 10.1557/opl.2013.828] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTThin-films of magnetic nanoparticles (MNPs) with high coercivities are deposited onto surfaces for use in data storage applications. This usually requires specialist clean-room facilities, sputtering equipment and high temperatures to achieve the correct crystallographic phases. One possible cheaper and more environmentally friendly alternative could be to use biomolecules. Many biomineralization and biotemplating molecules have been identified that are able to template a wide range of technologically relevant materials using mild, aqueous chemistry under physiological reaction conditions. Here, we have designed a dual affinity peptide (DAP) sequence to template MNPs onto a surface. One end of the DAP has a high binding affinity for SiO2 and the other for MNPs of the L10 phase of CoPt, a high coercivity magnetic material. Images of the biomineralized substrates show that nanoparticles of CoPt are localized onto the areas that were functionalized with the biotemplating DAP. Magnetic force microscopy (MFM) plots of the biotemplated nanoparticles show that there is magnetic contrast on the patterned surface.
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Li Y, Verbiest T, Vankelecom I. Improving the flux of PDMS membranes via localized heating through incorporation of gold nanoparticles. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2012.10.050] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
Three composite sponges were made with 10% of curcumin and by using polymers, namely, chitosan and gelatin with various ratios. The chemical structure and morphology were evaluated by FTIR and SEM. These sponges were evaluated for water absorption capacity, antibacterial activity,in vitrodrug release, andin vivowound healing studies by excision wound model using rabbits. Thein vivostudy presented a greater wound closure in wounds treated with curcumin-composite sponge than those with composite sponge without curcumin and untreated group. These obtained results showed that combination of curcumin, chitosan and gelatin could improve the wound healing activity in comparison to chitosan, and gelatin without curcumin.
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Xia B, Wang X, He F, Cui Q, Li L. Self-assembly of conjugated polymer on hybrid nanospheres for cellular imaging applications. ACS APPLIED MATERIALS & INTERFACES 2012; 4:6332-6337. [PMID: 23101490 DOI: 10.1021/am301945k] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A new kind of hybrid core-shell nanosphere was fabricated by combining the in situ formation of Au nanoparticles and covalent cross-linking of biocompatible carboxymethyl starch dialdehyde (CMSD) and chitosan (CTS). When the fluorescent dye poly[9,9'-bis(6″-(N,N,N-trimethylammonium)-hexyl)fluorene-2,7-ylenevinylene-co-alt-1,4-phenylene dibromide] (PFV) was assembled on the surface of the hybrid nanospheres through electrostatic attraction, these biocompatible hybrid nanospheres exhibited metal-enhanced fluorescence effects. The fluorescence intensity of (CTS-Au)@CMSD/PFV hybrid nanosphere is 1.43 times that of CTS-CMSD/PFV hybrid nanospheres lacking Au nanoparticle. In addition, the (CTS-Au)@CMSD/PFV hybrid nanospheres exhibit excellent biodegradability upon exposure to enzymatic aqueous solution and good biocompatibility when cocultured with HeLa cervical carcinoma cells; these advantages make them attractive for cellular imaging and biological analysis and detection.
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Affiliation(s)
- Bihua Xia
- State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
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Yao HB, Mao LB, Yan YX, Cong HP, Lei X, Yu SH. Gold nanoparticle functionalized artificial nacre: facile in situ growth of nanoparticles on montmorillonite nanosheets, self-assembly, and their multiple properties. ACS NANO 2012; 6:8250-8260. [PMID: 22909252 DOI: 10.1021/nn3029315] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Artificial nacre based on clay nanosheets have been emerging as a new generation of bioinspired materials due to their super mechanical, fire-retardant, heat-shield, and gas barrier properties. Functional design in artificial nacre is highly demanded to further broaden the applications of these promising bioinspired materials. However, there is rarely a report on the functionalization of artificial nacre at present possibly due to the lack of a feasible strategy to introduce functional components in nacre-like materials without weakening other properties. In this study, we report a feasible method to fabricate artificial nacre-like functional hybrid films by using Au nanoparticle (NP) modified natural clay montmorillonite (MTM) nanosheets as efficient two-dimensional building blocks. First, Au NPs-chitosan-MTM hybrid nanosheets were prepared and homogeneously dispersed in deionized water by the facile in situ growth of Au NPs on chitosan-MTM nanosheets. Then, the obtained Au NPs-chitosan-MTM hybrid nanosheet suspension can be sprayed or vacuum filtrated to form nacre-like layered hybrid nanocoatings or free-standing hybrid films, respectively. Finally, as-fabricated artificial nacre nanocoatings or hybrid films have been demonstrated to behave with surface enhanced Raman scattering (SERS), catalytic, and photothermal conversion properties indicating the successful functionalization of artificial nacre by introducing Au NPs.
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Affiliation(s)
- Hong-Bin Yao
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, PR China
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Label-free sandwich type of immunosensor for hepatitis C virus core antigen based on the use of gold nanoparticles on a nanostructured metal oxide surface. Mikrochim Acta 2012. [DOI: 10.1007/s00604-012-0842-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Mathew M, Sureshkumar S, Sandhyarani N. Synthesis and characterization of gold–chitosan nanocomposite and application of resultant nanocomposite in sensors. Colloids Surf B Biointerfaces 2012; 93:143-7. [DOI: 10.1016/j.colsurfb.2011.12.028] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Revised: 11/30/2011] [Accepted: 12/22/2011] [Indexed: 11/25/2022]
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Chai H, Liu H, Guo X, Zheng D, Kutes Y, Huey BD, Rusling JF, Hu N. Long Distance Electron Transfer Across >100 nm Thick Au Nanoparticle/Polyion Films to a Surface Redox Protein. ELECTROANAL 2012; 24:1129-1140. [PMID: 23730120 PMCID: PMC3666353 DOI: 10.1002/elan.201200079] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Accepted: 03/19/2012] [Indexed: 11/09/2022]
Abstract
Glutathione-decorated 5 nm gold nanoparticles (AuNPs) and oppositely charged poly(allylamine hydrochloride) (PAH) were assembled into {PAH/AuNP} n films fabricated layer-by-layer (LbL) on pyrolytic graphite (PG) electrodes. These AuNP/polyion films utilized the AuNPs as electron hopping relays to achieve direct electron transfer between underlying electrodes and redox proteins on the outer film surface across unprecedented distances >100 nm for the first time. As film thickness increased, voltammetric peak currents for surface myoglobin (Mb) on these films decreased but the electron transfer rate was relatively constant, consistent with a AuNP-mediated electron hopping mechanism.
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Affiliation(s)
- Hongmei Chai
- Department of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
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Jena P, Mohanty S, Mallick R, Jacob B, Sonawane A. Toxicity and antibacterial assessment of chitosan-coated silver nanoparticles on human pathogens and macrophage cells. Int J Nanomedicine 2012; 7:1805-18. [PMID: 22619529 PMCID: PMC3356211 DOI: 10.2147/ijn.s28077] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Pathogenic bacteria are able to develop various strategies to counteract the bactericidal action of antibiotics. Silver nanoparticles (AgNPs) have emerged as a potential alternative to conventional antibiotics because of their potent antimicrobial properties. The purpose of this study was to synthesize chitosan-stabilized AgNPs (CS-AgNPs) and test for their cytotoxic, genotoxic, macrophage cell uptake, antibacterial, and antibiofilm activities. Methods AgNPs were synthesized using chitosan as both a stabilizing and a reducing agent. Antibacterial activity was determined by colony-forming unit assay and scanning electron microscopy. Genotoxic and cytotoxic activity were determined by DNA fragmentation, comet, and MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] assays. Cellular uptake and intracellular antibacterial activity were tested on macrophages. Results CS-AgNPs exhibited potent antibacterial activity against different human pathogens and also impeded bacterial biofilm formation. Scanning electron microscopy analysis indicated that CS-AgNPs kill bacteria by disrupting the cell membrane. CS-AgNPs showed no significant cytotoxic or DNA damage effect on macrophages at the bactericidal dose. Propidium iodide staining indicated active endocytosis of CS-AgNPs resulting in reduced intracellular bacterial survival in macrophages. Conclusion The present study concludes that at a specific dose, chitosan-based AgNPs kill bacteria without harming the host cells, thus representing a potential template for the design of antibacterial agents to decrease bacterial colonization and to overcome the problem of drug resistance.
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Affiliation(s)
- Prajna Jena
- School of Biotechnology, KIIT University, Bhubaneswar, Orissa, India
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Thomas V, Yallapu MM, Sreedhar B, Bajpai SK. Fabrication, Characterization of Chitosan/Nanosilver Film and Its Potential Antibacterial Application. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 20:2129-44. [DOI: 10.1163/156856209x410102] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Varsha Thomas
- a Department of Chemistry, Polymer Research Laboratory, Govt. Model Science College, Jabalpur (M. P.) 482001, India
| | - Murali Mohan Yallapu
- b Department of Biomedical Engineering ND-20, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - B. Sreedhar
- c Inorganic and Physical Chemistry, Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007 (A. P.), India
| | - S. K. Bajpai
- d Department of Chemistry, Polymer Research Laboratory, Govt. Model Science College, Jabalpur (M. P.) 482001, India
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