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Yang H, Zhang M, Wang J, Wang S, Wang S, Yang L, Wang P, Song H, Liu H, He Y. An investigation of a strengthening polysaccharide interfacial membrane strategy utilizing an anionic polysaccharide-alkaline ligand interfacial assembly for all-liquid printing. Int J Biol Macromol 2024; 274:133487. [PMID: 38944093 DOI: 10.1016/j.ijbiomac.2024.133487] [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: 04/09/2024] [Revised: 06/11/2024] [Accepted: 06/26/2024] [Indexed: 07/01/2024]
Abstract
The applications of polysaccharides as emulsifiers are limited due to the lack of hydrophobicity. However, traditional hydrophobic modification methods used for polysaccharides are complicated and involve significant mechanical and thermal losses. In this study, soy hull polysaccharide (SHP) and terminally aminopropylated polydimethylsiloxane (NPN) were selected to investigate the feasibility of a simple and green interfacial membrane strengthening strategy based on the interfacial polymerization of anionic polysaccharides and fat-soluble alkaline ligands. Our results show that deprotonated SHP and protonated NPN can be complexed at the water/oil (W/O) interface, reduce interfacial tension, and form a strong membrane structure. Moreover, they can quickly form a membrane at the W/O interface upon the moment of contact to produce stable all-liquid printing products with complex patterns. However, the molecular weight of NPN affects the complexation reaction. Consequently, this study has long-term implications to expanding the areas of application for anionic polysaccharides.
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Affiliation(s)
- Hui Yang
- College of Food Science and Technology, Bohai University, Jinzhou 121013, People's Republic of China.
| | - Minghao Zhang
- College of Food Science and Technology, Bohai University, Jinzhou 121013, People's Republic of China
| | - Junting Wang
- College of Food Science and Technology, Bohai University, Jinzhou 121013, People's Republic of China
| | - Shengnan Wang
- College of Food Science and Technology, Bohai University, Jinzhou 121013, People's Republic of China; Grain and Cereal Food Bio-efficient Transformation Engineering Research Center of Liaoning Province, Jinzhou 121013, China.
| | - Shumin Wang
- College of Food Science and Technology, Bohai University, Jinzhou 121013, People's Republic of China
| | - Lina Yang
- College of Food Science and Technology, Bohai University, Jinzhou 121013, People's Republic of China; Grain and Cereal Food Bio-efficient Transformation Engineering Research Center of Liaoning Province, Jinzhou 121013, China
| | - Peng Wang
- College of Food Science and Technology, Bohai University, Jinzhou 121013, People's Republic of China; Grain and Cereal Food Bio-efficient Transformation Engineering Research Center of Liaoning Province, Jinzhou 121013, China
| | - Hong Song
- College of Food Science and Technology, Bohai University, Jinzhou 121013, People's Republic of China; Grain and Cereal Food Bio-efficient Transformation Engineering Research Center of Liaoning Province, Jinzhou 121013, China
| | - He Liu
- College of Food Science and Technology, Bohai University, Jinzhou 121013, People's Republic of China; Grain and Cereal Food Bio-efficient Transformation Engineering Research Center of Liaoning Province, Jinzhou 121013, China
| | - Yutang He
- College of Food Science and Technology, Bohai University, Jinzhou 121013, People's Republic of China; Grain and Cereal Food Bio-efficient Transformation Engineering Research Center of Liaoning Province, Jinzhou 121013, China
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da Silva PL, Bittencourt HR, Burnett LH, Spohr AM. Is additional silane application necessary for a new silane-containing universal adhesive to bond to glass ceramics? J ESTHET RESTOR DENT 2024. [PMID: 39016071 DOI: 10.1111/jerd.13283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Revised: 07/06/2024] [Accepted: 07/10/2024] [Indexed: 07/18/2024]
Abstract
OBJECTIVE To evaluate the in vitro influence of prior silane application on the microshear bond strength (μSBS) of Scotchbond Universal Plus to glass ceramic. MATERIALS AND METHODS Thirty blocks of lithium disilicate ceramic were etched with hydrofluoric acid for 20 s and distributed into Group 1 (no silane and no adhesive), Group 2 (adhesive), Group 3 (silane + adhesive). Three cylinders of resin cement were made on each ceramic block. Five blocks (n = 15 cylinders) were subjected to the μSBS test after 24 h, and the other five blocks (n = 15 cylinders) were tested after 6 months of water storage. RESULTS According to two-way ANOVA, followed by Tukey's test, the means of μSBS (MPa), denoted by different letters, show significant differences (p < 0.05): after 24 h-Group 1 (31.7)B, Group 2 (43.3)A, and Group 3 (31.3)B; after 6 months-Group 1 (14.8)B, Group 2 (33.6)A, and Group 3 (30.3)A. After 6 months of storage, there was a significant decrease in μSBS for Groups 1 and 2, along with an increase in adhesive failures across all groups. CONCLUSIONS Prior application of silane did not increase the μSBS between Scotchbond Universal Plus and ceramic, and there was degradation at the bond interface over time. CLINICAL SIGNIFICANCE Prior application of a silane agent is not necessary when using Scotchbond Universal Plus for bonding to glass ceramics. Regardless of the prior application of silane, there is degradation at the bond interface over time.
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Affiliation(s)
- Priscila Luciane da Silva
- Department of Restorative Dentistry, Pontifical Catholic University of Rio Grande do Sul, School of Dentistry, Porto Alegre, Brazil
| | - Hélio Radke Bittencourt
- Department of Statistics, Pontifical Catholic University of Rio Grande do Sul, Polytechnic School, Porto Alegre, Brazil
| | - Luiz Henrique Burnett
- Department of Restorative Dentistry, Pontifical Catholic University of Rio Grande do Sul, School of Dentistry, Porto Alegre, Brazil
| | - Ana Maria Spohr
- Department of Restorative Dentistry, Pontifical Catholic University of Rio Grande do Sul, School of Dentistry, Porto Alegre, Brazil
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Ahn JY, Kim YJ, Lee JH, Singh RK, Lee HH. Mechanophysical and Anti-Adhesive Properties of a Nanoclay-Containing PMMA Denture Resin. ACS Biomater Sci Eng 2024; 10:2151-2164. [PMID: 38453640 DOI: 10.1021/acsbiomaterials.3c01817] [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] [Indexed: 03/09/2024]
Abstract
Poly(methyl methacrylate) (PMMA) is commonly used for dental dentures, but it has the drawback of promoting oral health risks due to oral bacterial adhesion. Recently, various nanoparticles have been incorporated into PMMA to tackle these issues. This study aims to investigate the mechanophysical and antimicrobial adhesive properties of a denture resin by incorporating of nanoclay into PMMA. Specimens were prepared by adding 0, 1, 2, and 4 wt % surface-modified nanoclay (Sigma) to self-polymerizing PMMA denture resin. These specimens were then evaluated using FTIR, TGA/DTG, and FE-SEM with EDS. Various mechanical and surface physical properties, including nanoindentation, were measured and compared with those of pure PMMA. Antiadhesion experiments were conducted by applying a Candida albicans (ATCC 11006) suspension to the surface of the specimens. The antiadhesion activity of C. albicans was confirmed through a yeast-wall component (mannan) and mRNA-seq analysis. The bulk mechanical properties of nanoclay-PMMA composites were decreased compared to those of pure PMMA, while the flexural strength and modulus met the ISO 20795-1 requirement. However, there were no significant differences in the nanoindentation hardness and elastic modulus. The surface energy revealed a significant decrease at 4 wt % nanoclay-PMMA. The antiadhesion effect of Candida albicans was evident along with nanoclay content in the nanocomposites and confirmed by the reduced attachment of mannan on nanoclay-PMMA composites. mRNA-seq analysis supported overall transcriptome changes in altering attachment and metabolism behaviors on the surface. The nanoclay-PMMA materials showed a lower surface energy as the content increased, leading to an antiadhesion effect against Candida albicans. These findings indicate that incorporating nanoclay into PMMA surfaces could be a valuable strategy for preventing the fungal biofilm formation of denture base materials.
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Affiliation(s)
- Jun-Yong Ahn
- Department of Biomaterials Science, College of Dentistry, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do 31116, Republic of Korea
| | - Yu-Jin Kim
- Department of Biomaterials Science, College of Dentistry, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do 31116, Republic of Korea
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do 31116, Republic of Korea
| | - Jung-Hwan Lee
- Department of Biomaterials Science, College of Dentistry, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do 31116, Republic of Korea
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do 31116, Republic of Korea
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do 31116, Republic of Korea
| | - Rajendra K Singh
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do 31116, Republic of Korea
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do 31116, Republic of Korea
| | - Hae-Hyoung Lee
- Department of Biomaterials Science, College of Dentistry, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do 31116, Republic of Korea
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do 31116, Republic of Korea
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do 31116, Republic of Korea
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Tavassoli S, Cheraghi S, Etemadifar P, Mollahosseini A, Joodaki S, Sedighi N. Optimization and characterization of silver nanoparticle-modified luffa for the adsorption of ketoprofen and reactive yellow 15 from aqueous solutions. Sci Rep 2024; 14:4398. [PMID: 38388671 PMCID: PMC10884008 DOI: 10.1038/s41598-024-54790-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Accepted: 02/16/2024] [Indexed: 02/24/2024] Open
Abstract
In the current work, luffa was modified with silver nanoparticles to prepare LF/AgNPs adsorbent for the elimination of ketoprofen and reactive yellow 15 (RY15) from aqueous media. Various characterization techniques, including FT-IR, XRD, BET, and SEM-EDS analysis, were employed to confirm the successful modification of LF/AgNPs. Several key parameters such as contact time, adsorbent dosage, concentration, pH, and agitation technique were fine-tuned to optimize the adsorption process. Ketoprofen removal was found to be most effective in weakly acidic conditions (pH = 5), while reactive yellow 15 adsorption was enhanced in an acidic environment (pH = 2). At 298 K, the highest adsorption capacities reached 56.88 mg/g for ketoprofen and 97.76 mg/g for reactive yellow 15. In both scenarios involving the elimination of ketoprofen and RY15, the Temkin isotherm exhibits higher R2 values, specifically 0.997 for ketoprofen and 0.963 for RY15, demonstrating a strong correlation with the observed adsorption data. Additionally, the kinetics of ketoprofen adsorption were best described by the Pseudo-first order model (R2 = 0.989), whereas the Pseudo-second order model provided the most accurate fit for reactive yellow 15 adsorption (R2 = 0.997). Importantly, the LF/AgNPs adsorbent displayed consistent performance over five consecutive reuse cycles, affirming its stability and efficacy in removing both contaminants. These findings underscore the exceptional potential of LF/AgNPs as a reliable adsorbent for the removal of reactive yellow 15 and ketoprofen from aqueous solutions.
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Affiliation(s)
- Soheil Tavassoli
- Research Laboratory of Spectroscopy and Micro and Nano Extraction, Department of Chemistry, Iran University of Science and Technology (IUST), Narmak, Tehran, Iran
| | - Setareh Cheraghi
- Research Laboratory of Spectroscopy and Micro and Nano Extraction, Department of Chemistry, Iran University of Science and Technology (IUST), Narmak, Tehran, Iran
| | - Pardis Etemadifar
- Research Laboratory of Spectroscopy and Micro and Nano Extraction, Department of Chemistry, Iran University of Science and Technology (IUST), Narmak, Tehran, Iran
| | - Afsaneh Mollahosseini
- Research Laboratory of Spectroscopy and Micro and Nano Extraction, Department of Chemistry, Iran University of Science and Technology (IUST), Narmak, Tehran, Iran.
| | - Shirin Joodaki
- Research Laboratory of Spectroscopy and Micro and Nano Extraction, Department of Chemistry, Iran University of Science and Technology (IUST), Narmak, Tehran, Iran
| | - Niloofar Sedighi
- Research Laboratory of Spectroscopy and Micro and Nano Extraction, Department of Chemistry, Iran University of Science and Technology (IUST), Narmak, Tehran, Iran
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Meng X, Xu Z, Wang C, Patitz J, Boccaccini AR, Burkovski A, Zheng K. Surface engineering of mesoporous bioactive glass nanoparticles with bacteriophages for enhanced antibacterial activity. Colloids Surf B Biointerfaces 2024; 234:113714. [PMID: 38128358 DOI: 10.1016/j.colsurfb.2023.113714] [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: 08/03/2023] [Revised: 11/17/2023] [Accepted: 12/13/2023] [Indexed: 12/23/2023]
Abstract
Binary SiO2-CaO mesoporous bioactive glass nanoparticles (MBGNs) are multifunctional biomaterials able to promote osteogenic, angiogenic, and immunomodulatory activities. MBGNs have been applied in a variety of tissue regeneration strategies. However, MBGNs lack strong antibacterial activity and current strategies (loading of antibacterial ions or antibiotics) toward enhanced antibacterial activity may cause cytotoxicity or antibiotic resistance. Here we engineered MBGNs using bacteriophages (phages) to enhance the antibacterial activity. Salmonella Typhimurium (S. T) phage PFPV25.1 that can infect Salmonella enterica serovar Typhimurium strain LT2 was used as a model phage to engineer MBGNs. MBGNs were first modified with amine groups to enhance the affinity between phages and MBGNs surfaces. Afterward, the physicochemical and antibacterial activity of phage-engineered MBGNs was evaluated. The results showed that S. T phage PFPV25.1 was successfully bound onto MBGNs surfaces without losing their bioactivity. A higher quantity of phages could be bounded onto amine-functionalized MBGNs than onto non-functionalized MBGNs. Phages on amine-functionalized MBGNs exhibited higher antibacterial activity. The stability test showed that phages could remain on amine-functionalized MBGNs for over 28 days. This work provides valuable information on developing phage-modified MBGNs as a new and effective antibacterial system for biomedical applications.
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Affiliation(s)
- Xiangjun Meng
- Microbiology Division, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany; School of Rehabilitation Science and Engineering, University of Health and Rehabilitation Sciences, Qingdao 266024, China
| | - Zhiyan Xu
- Institute of Biomaterials, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Chen Wang
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing 210029, China; Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210029, China
| | - Jennifer Patitz
- Microbiology Division, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Andreas Burkovski
- Microbiology Division, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Kai Zheng
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing 210029, China; Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210029, China.
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6
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Song Z, Chen R, Huang Z, Gong Y, Zhao H. Preparation and Characterization of Perfluoropolyether-Silane@Ethye Cellulose Polymeric Microcapsules. Polymers (Basel) 2024; 16:169. [PMID: 38256968 PMCID: PMC10818722 DOI: 10.3390/polym16020169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 12/29/2023] [Accepted: 01/03/2024] [Indexed: 01/24/2024] Open
Abstract
A novel polymeric microcapsule was designed and synthesized using perfluoropolyether silane (PFPE-silane) as a superhydrophobic core material and ethyl cellulose (EC) as a shell material. The effects of the stirring rate and the core-to-shell ratio on the synthesized microcapsules were investigated. The physicochemical properties of the polymeric microcapsules were evaluated using scanning electron microscopy, fourier transform infrared spectroscopy, thermogravimetric analysis, laser particle size analysis, and wettability analysis. The results showed that when the stirring rate was 650 rpm and the core-to-shell ratio was 1:1, well-distributed and uniformly dispersed microcapsules could be obtained. The results also indicated that the prepared polymeric microcapsules were spherical particles with micropores on the surface, and they had an average particle size of 165.71 μm. The EC shells could effectively prevent the thermal decomposition of PFPE-silane during cement hydration, and the PFPE-silane also exhibited excellent hydrophobicity. The specially designed structure of this polymeric microcapsule suggests its potential for enhancing the corrosion resistance of reinforced concrete structures.
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Affiliation(s)
- Zijian Song
- College of Civil and Transportation Engineering, Hohai University, 1# Xikang Road, Nanjing 210098, China
- College of Mechanics and Materials, Hohai University, 8# West Focheng Road, Nanjing 210098, China
| | - Ruijie Chen
- College of Mechanics and Materials, Hohai University, 8# West Focheng Road, Nanjing 210098, China
| | - Zilang Huang
- College of Mechanics and Materials, Hohai University, 8# West Focheng Road, Nanjing 210098, China
| | - Yucheng Gong
- College of Civil and Transportation Engineering, Hohai University, 1# Xikang Road, Nanjing 210098, China
| | - Haitao Zhao
- College of Civil and Transportation Engineering, Hohai University, 1# Xikang Road, Nanjing 210098, China
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Robinson C, Juska VB, O'Riordan A. Surface chemistry applications and development of immunosensors using electrochemical impedance spectroscopy: A comprehensive review. ENVIRONMENTAL RESEARCH 2023; 237:116877. [PMID: 37579966 DOI: 10.1016/j.envres.2023.116877] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 08/04/2023] [Accepted: 08/10/2023] [Indexed: 08/16/2023]
Abstract
Immunosensors are promising alternatives as detection platforms for the current gold standards methods. Electrochemical immunosensors have already proven their capability for the sensitive, selective, detection of target biomarkers specific to COVID-19, varying cancers or Alzheimer's disease, etc. Among the electrochemical techniques, electrochemical impedance spectroscopy (EIS) is a highly sensitive technique which examines the impedance of an electrochemical cell over a range of frequencies. There are several important critical requirements for the construction of successful impedimetric immunosensor. The applied surface chemistry and immobilisation protocol have impact on the electroanalytical performance of the developed immunosensors. In this Review, we summarise the building blocks of immunosensors based on EIS, including self-assembly monolayers, nanomaterials, polymers, immobilisation protocols and antibody orientation.
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Affiliation(s)
- Caoimhe Robinson
- Tyndall National Institute, University College Cork, T12 R5CP, Cork, Ireland
| | - Vuslat B Juska
- Tyndall National Institute, University College Cork, T12 R5CP, Cork, Ireland.
| | - Alan O'Riordan
- Tyndall National Institute, University College Cork, T12 R5CP, Cork, Ireland.
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8
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Bu N, Wang L, Zhang D, Xiao H, Liu X, Chen X, Pang J, Ma C, Mu R. Highly Hydrophobic Gelatin Nanocomposite Film Assisted by Nano-ZnO/(3-Aminopropyl) Triethoxysilane/Stearic Acid Coating for Liquid Food Packaging. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37881864 DOI: 10.1021/acsami.3c10757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
Biodegradable gelatin (G) food packaging films are in increasing demand as the substitution of petroleum-based preservative materials. However, G packaging films universally suffer from weak hydrophobicity in practical applications. Constructing a hydrophobic micro/nanocoating with low surface energy is an effective countermeasure. However, the poor compatibility with the hydrophilic G substrate often leads to the weak interfacial adhesion and poor durability of the hydrophobic coating. To overcome this obstacle, we used (3-aminopropyl) triethoxysilane (APS) as an interfacial bridging agent to prepare a highly hydrophobic, versatile G nanocomposite film. Specifically, tannic acid (TA)-modified nanohydroxyapatite (n-HA) particles (THA) were introduced in G matrix (G-THA) to improve the mechanical properties. Micro/nanostructure with low surface energy composed of nanozinc oxide (Nano-ZnO)/APS/stearic acid (SA) (NAS) was constructed on the surface of G-THA film (G-THA/NAS) through one-step spray treatment. Consequently, as-prepared G-THA/NAS film presented excellent mechanics (tensile strength: 7.6 MPa, elongation at break: 292.7%), water resistance ability (water contact angle: 150.4°), high UV-shielding (0% transmittance at 200 nm), degradability (100% degradation rate after buried in the natural soil for 15 days), antioxidant (78.8% of 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity), and antimicrobial (inhibition zone against Escherichia coli: 15.0 mm and Staphylococcus aureus: 16.5 mm) properties. It should be emphasized that the bridging function of APS significantly improves the interfacial adhesion ability of the NAS coating with more than 95% remaining area after the cross-cut adhesion test. Meanwhile, the G-THA/NAS film could maintain stable and long-lasting hydrophobic surfaces against UV radiation, high temperature, and abrasion. Based on these multifunctional properties, the G-THA/NAS film was successfully applied as a liquid packaging material. To sum up, we provide a feasible and effective method to prepare high-performance green packaging films.
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Affiliation(s)
- Nitong Bu
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Lin Wang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
| | - Di Zhang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Huimin Xiao
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaoman Liu
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xianrui Chen
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jie Pang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chen Ma
- Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
| | - Ruojun Mu
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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Baghapour S, Nehema J, Zhang WQ, Warren-Smith SC, Hickey SM, Plush SE, Afshar Vahid S. Surface Functionalised Optical Fibre for Detection of Hydrogen Sulphide. BIOSENSORS 2023; 13:949. [PMID: 37998124 PMCID: PMC10669384 DOI: 10.3390/bios13110949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 11/25/2023]
Abstract
Dysregulated production of hydrogen sulphide in the human body has been associated with various diseases including cancer, underlining the importance of accurate detection of this molecule. Here, we report the detection of hydrogen sulphide using fluorescence-emission enhancement of two 1,8-naphthalimide fluorescent probes with an azide moiety in position 4. One probe, serving as a control, featured a methoxyethyl moiety through the imide to evaluate its effectiveness for hydrogen sulphide detection, while the other probe was modified with (3-aminopropyl)triethoxysilane (APTES) to enable direct covalent attachment to an optical fibre tip. We coated the optical fibre tip relatively homogeneously with the APTES-azide fluorophore, as confirmed via x-ray photoelectron spectroscopy (XPS). The absorption and fluorescence responses of the control fluorophore free in PBS were analysed using UV-Vis and fluorescence spectrophotometry, while the fluorescence emission of the APTES-azide fluorophore-coated optical fibres was examined using a simple, low-cost optical fibre-based setup. Both fluorescent probes exhibited a significant increase (more than double the initial value) in fluorescence emission upon the addition of HS- when excited with 405 nm. However, the fluorescence enhancement of the coated optical fibres demonstrated a much faster response time of 2 min (time for the fluorescence intensity to reach 90% of its maximum value) compared to the control fluorophore in solution (30 min). Additionally, the temporal evolution of fluorescence intensity of the fluorophore coated on the optical fibre was studied at two pH values (7.4 and 6.4), demonstrating a reasonable overlap and confirming the compound pH insensitivity within this range. The promising results from this study indicate the potential for developing an optical fibre-based sensing system for HS- detection using the synthesised fluorophore, which could have significant applications in health monitoring and disease detection.
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Affiliation(s)
- Shaghayegh Baghapour
- Laser Physics and Photonic Devices Laboratory, UniSA STEM, University of South Australia, Adelaide, SA 5095, Australia
| | - Jasmine Nehema
- Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia
| | - Wen Qi Zhang
- Laser Physics and Photonic Devices Laboratory, UniSA STEM, University of South Australia, Adelaide, SA 5095, Australia
- Future Industries Institute, University of South Australia, Adelaide, SA 5095, Australia
| | - Stephen C Warren-Smith
- Laser Physics and Photonic Devices Laboratory, UniSA STEM, University of South Australia, Adelaide, SA 5095, Australia
- Future Industries Institute, University of South Australia, Adelaide, SA 5095, Australia
| | - Shane M Hickey
- Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia
| | - Sally E Plush
- Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia
| | - Shahraam Afshar Vahid
- Laser Physics and Photonic Devices Laboratory, UniSA STEM, University of South Australia, Adelaide, SA 5095, Australia
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Huang Y, Chen P, Zhou L, Zheng J, Wu H, Liang J, Xiao A, Li J, Guan BO. Plasmonic Coupling on an Optical Microfiber Surface: Enabling Single-Molecule and Noninvasive Dopamine Detection. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2304116. [PMID: 37342974 DOI: 10.1002/adma.202304116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/12/2023] [Indexed: 06/23/2023]
Abstract
Optical fibers can be effective biosensors when employed in early-stage diagnostic point-of-care devices as they can avoid interference from molecules with similar redox potentials. Nevertheless, their sensitivity needs to be improved for real-world applications, especially for small-molecule detection. This work demonstrates an optical microfiber biosensor for dopamine (DA) detection based on the DA-binding-induced aptamer conformational transitions that occur at plasmonic coupling sites on a double-amplified nanointerface. The sensor exhibits ultrahigh sensitivity when detecting DA molecules at the single-molecule level; additionally, this work provides an approach for overcoming optical device sensitivity limits, further extending optical fiber single-molecule detection to a small molecule range (e.g., DA and metal ions). The selective energy enhancement and signal amplification at the binding sites effectively avoid nonspecific amplification of the whole fiber surface which may lead to false-positive results. The sensor can detect single-molecule DA signals in body-fluids. It can detect the released extracellular DA levels and monitor the DA oxidation process. An appropriate aptamer replacement allows the sensor to be used for the detection of other target small molecules and ions at the single-molecule level. This technology offers alternative opportunities for developing noninvasive early-stage diagnostic point-of-care devices and flexible single-molecule detection techniques in theoretical research.
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Affiliation(s)
- Yunyun Huang
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, 511143, China
| | - Pengwei Chen
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, 511143, China
| | - Luyan Zhou
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, 511143, China
| | - Jiaying Zheng
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, 511143, China
| | - Haotian Wu
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, 511143, China
| | - Jiaxuan Liang
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, 511143, China
| | - Aoxiang Xiao
- Department of Neurology and Stroke Center, The first Affiliated Hospital, & Clinical Neuroscience Institute, Jinan University, Guangzhou, 510630, China
| | - Jie Li
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, 511143, China
| | - Bai-Ou Guan
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, 511143, China
- Department of Neurology and Stroke Center, The first Affiliated Hospital, & Clinical Neuroscience Institute, Jinan University, Guangzhou, 510630, China
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11
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Scuto FR, Ciarlantini C, Chiappini V, Pietrelli L, Piozzi A, Girelli AM. Design of a 3D Amino-Functionalized Rice Husk Ash Nano-Silica/Chitosan/Alginate Composite as Support for Laccase Immobilization. Polymers (Basel) 2023; 15:3127. [PMID: 37514516 PMCID: PMC10383677 DOI: 10.3390/polym15143127] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 07/19/2023] [Accepted: 07/20/2023] [Indexed: 07/30/2023] Open
Abstract
Recycling of agro-industrial waste is one of the major issues addressed in recent years aimed at obtaining products with high added value as a future alternative to traditional ones in the per-spective of a bio-based and circular economy. One of the most produced wastes is rice husk and it is particularly interesting because it is very rich in silica, a material with a high intrinsic value. In the present study, a method to extract silica from rice husk ash (RHA) and to use it as a carrier for the immobilization of laccase from Trametes versicolor was developed. The obtained mesoporous nano-silica was characterized by X-ray diffraction (XRD), ATR-FTIR spectroscopy, Scanning Elec-tron Microscopy (SEM), and Energy Dispersive X-ray spectroscopy (EDS). A nano-silica purity of about 100% was found. Nano-silica was then introduced in a cross-linked chitosan/alginate scaffold to make it more easily recoverable after reuse. To favor laccase immobilization into the composite scaffold, functionalization of the nano-silica with (γ-aminopropyl) triethoxysilane (APTES) was performed. The APTES/RHA nano-silica/chitosan/alginate (ARCA) composite al-lowed to obtain under mild conditions (pH 7, room temperature, 1.5 h reaction time) a robust and easily reusable solid biocatalyst with 3.8 U/g of immobilized enzyme which maintained 50% of its activity after six reuses. The biocatalytic system, tested for syringic acid bioremediation, was able to totally oxidize the contaminant in 24 h.
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Affiliation(s)
- Francesca Romana Scuto
- Department of Chemistry, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Clarissa Ciarlantini
- Department of Chemistry, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Viviana Chiappini
- Department of Chemistry, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Loris Pietrelli
- DAFNE Department, Tuscia University, Via Santa Maria in Gradi 4, 01100 Viterbo, Italy
| | - Antonella Piozzi
- Department of Chemistry, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Anna M Girelli
- Department of Chemistry, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
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12
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Getnet TG, Cruz NC, Rangel EC. Effect of Plasma Excitation Power on the SiOxCyHz/TiOx Nanocomposite. MICROMACHINES 2023; 14:1463. [PMID: 37512774 PMCID: PMC10383557 DOI: 10.3390/mi14071463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/24/2023] [Accepted: 06/26/2023] [Indexed: 07/30/2023]
Abstract
Titanium dioxide has attracted a great deal of attention in the field of environmental purification due to its photocatalytic activity under ultraviolet light. Photocatalytic efficiency and the energy required to initiate the process remain the drawbacks that hinder the widespread adoption of the process. Consistently with this, it is proposed here the polymerization of hexamethyldisiloxane fragments simultaneously to TiO2 sputtering for the production of thin films in low-pressure plasma. The effect of plasma excitation power on the molecular structure and chemical composition of the films was evaluated by infrared spectroscopy. Wettability and surface energy were assessed by a sessile drop technique, using deionized water and diiodomethane. The morphology and elemental composition of the films were determined using scanning electron microscopy and energy dispersive spectroscopy, respectively. The thickness and roughness of the resulting films were measured using profilometry. Organosilicon-to-silica films, with different properties, were deposited by combining both deposition processes. Titanium was detected from the structures fabricated by the hybrid method. It has been observed that the proportion of titanium and particles incorporated into silicon-based matrices depends on the plasma excitation power. In general, a decrease in film thickness with increasing power has been observed. The presence of Ti in the plasma atmosphere alters the plasma deposition mechanism, affecting film deposition rate, roughness, and wettability. An interpretation of the excitation power dependence on the plasma activation level and sputtering yield is proposed. The methodology developed here will encourage researchers to create TiO2 films on a range of substrates for their prospective use as sensor electrodes, water and air purification systems, and biocompatible materials.
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Affiliation(s)
- Tsegaye Gashaw Getnet
- Laboratory of Technological Plasmas, Institute of Science and Technology, São Paulo State University (UNESP), Sorocaba 18087-180, SP, Brazil
- Department of Chemistry, College of Science, Bahir Dar University, Bahir Dar P.O. Box 79, Ethiopia
| | - Nilson C Cruz
- Laboratory of Technological Plasmas, Institute of Science and Technology, São Paulo State University (UNESP), Sorocaba 18087-180, SP, Brazil
| | - Elidiane Cipriano Rangel
- Laboratory of Technological Plasmas, Institute of Science and Technology, São Paulo State University (UNESP), Sorocaba 18087-180, SP, Brazil
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13
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Gercci Y, Yosef-Tal N, Bendikov T, Dodiuk H, Kenig S, Tenne R. The Mechanical Properties Relationship of Radiation-Cured Nanocomposites Based on Acrylates and Cationic Polymerized Epoxies and the Composition of Silane-Modified Tungsten Disulfide Nanoparticles. Polymers (Basel) 2023; 15:3061. [PMID: 37514450 PMCID: PMC10383511 DOI: 10.3390/polym15143061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 07/08/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023] Open
Abstract
The effect of semiconducting tungsten disulfide (WS2) nanoparticles (NPs), functionalized by either methacryloxy, glycidyl, vinyl, or amino silanes, has been studied in photocuring of acrylate and epoxy resins (the latter photocured according to a cationic mechanism). The curing time, degree of curing (DC), thermal effects, and mechanical properties of the radiation-cured resins were investigated. X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) analyses confirmed that a silane coating was formed (1-4 nm) on the NPs' surface having a thickness of 1-4 nm. Fourier transition infrared (FTIR) was used to determine the DC of the nanocomposite resin. The curing time of the epoxy resin, at 345-385 nm wavelength, was 10 to 20 s, while for acrylate, the curing time was 7.5 min, reaching 92% DC in epoxy and 84% in acrylate. The glass transition temperature (Tg) of the photocured acrylates in the presence of WS2 NPs increased. In contrast to the acrylate, the epoxy displayed no significant variations of the Tg. It was found that the silane surface treatments enhanced the DC. Significant increases in impact resistance and enhancement in shear adhesion strength were observed when the NPs were treated with vinyl silane. A previous study has shown that the addition of WS2 NPs at a concentration of 0.5 wt.% is the optimal loading for improving the resin's mechanical properties. This study supports these earlier findings not only for the unmodified NPs but also for those functionalized with silane moieties. This study opens new vistas for the photocuring of resins and polymers in general when incorporating WS2 NPs.
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Affiliation(s)
- Yarden Gercci
- Department of Polymer Materials Engineering, Shenkar College, Anna Frank 12, Ramat-Gan 5252626, Israel
| | - Natali Yosef-Tal
- Department of Polymer Materials Engineering, Shenkar College, Anna Frank 12, Ramat-Gan 5252626, Israel
| | - Tatyana Bendikov
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Hanna Dodiuk
- Department of Polymer Materials Engineering, Shenkar College, Anna Frank 12, Ramat-Gan 5252626, Israel
| | - Samuel Kenig
- Department of Polymer Materials Engineering, Shenkar College, Anna Frank 12, Ramat-Gan 5252626, Israel
| | - Reshef Tenne
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot 7610001, Israel
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14
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Liu X, Zhang H, Huang Z, Cheng Z, Li T. A highly sensitive and selective detection of 2,4,6-trinitrotoluene (TNT) using a peptide-functionalized silicon nanowire array sensor. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:2082-2087. [PMID: 37070764 DOI: 10.1039/d3ay00169e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
A highly sensitive and specific detection of 2,4,6-trinitrotoluene (TNT), a typical nitrated aromatic explosive, was demonstrated by a silicon nanowire (SiNW) array sensor. The SiNW array devices were self-assembled and functionalized with the anti-TNT peptide to obtain unique sensitivity toward TNT. Also, the effect of the biointerfacing linker's chemistry and Debye screening with varied ionic strength of phosphate buffer solution (PBS) on TNT binding response signals were investigated. The optimization of the peptide-functionalized SiNW array sensor showed high sensitivity for TNT with a detection limit of 0.2 fM, the highest sensitivity reported to date. These initial promising results may help accelerate the development of portable sensors for femtomolar level TNT detection.
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Affiliation(s)
- Xingqi Liu
- Department of Chemical Defense, Institute of NBC Defense, PLA Army, Beijing 102205, China.
- Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China.
| | - Hongpeng Zhang
- Department of Chemical Defense, Institute of NBC Defense, PLA Army, Beijing 102205, China.
| | - Zhiping Huang
- Department of Chemical Defense, Institute of NBC Defense, PLA Army, Beijing 102205, China.
| | - Zhenxing Cheng
- Department of Chemical Defense, Institute of NBC Defense, PLA Army, Beijing 102205, China.
| | - Tie Li
- Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China.
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15
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Millot Y, Hervier A, Ayari J, Hmili N, Blanchard J, Boujday S. Revisiting Alkoxysilane Assembly on Silica Surfaces: Grafting versus Homo-Condensation in Solution. J Am Chem Soc 2023; 145:6671-6681. [PMID: 36926855 DOI: 10.1021/jacs.2c11390] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Silica surface functionalization is often done through the condensation of functional silanes on silanols, silica surfaces' terminal groups. APTES, aminopropyltriethoxysilane, is widely used due to its assumed high reactivity with silanols, kinetically promoted by the catalytic action of the terminal amine function. Here, we revisit, based on a quantitative analysis by solid-state 29Si NMR, the assembly of this silane on silica surfaces to investigate whether its presence results from grafting, i.e., hetero-condensation with silanol groups or from homo-condensation of silane molecules in solution leading to polycondensates physisorbed on silica. We investigate the interaction of APTES with a crystalline layered silicate, ilerite, and with amorphous nonporous silica. We also studied a second silane, cyanopropyltrichlorosilane (CPTCS), terminated with a nitrile group. Our results undoubtedly prove that while CPTCS is grafted on the silica surface, the presence of APTES on silica and silicate materials is only marginally associated with silanol consumption. The analysis of the signal related to silicon atoms from silanes (Tn species) and those from silica (Qn species) allowed for the accurate estimation of the extent of homo-condensation vs grafting based on the ratio of T-O-T/Q-O-T siloxane bridges. These findings deeply question the well-established certainties on APTES assembly on silica that should no longer be seen as grafting of alkoxysilane by hetero-condensation with silanol groups but more accurately as a homo-condensed network of silanes, predominantly physisorbed on the surface but including some sparse anchoring points to the surface involving less than 6% of the overall silanol groups.
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Affiliation(s)
- Yannick Millot
- Sorbonne Université, CNRS, Laboratoire de Réactivité de Surface (LRS), 4 place Jussieu, F-75005 Paris, France
| | - Antoine Hervier
- Sorbonne Université, CNRS, Laboratoire de Réactivité de Surface (LRS), 4 place Jussieu, F-75005 Paris, France
| | - Jihed Ayari
- Sorbonne Université, CNRS, Laboratoire de Réactivité de Surface (LRS), 4 place Jussieu, F-75005 Paris, France
| | - Naoures Hmili
- Sorbonne Université, CNRS, Laboratoire de Réactivité de Surface (LRS), 4 place Jussieu, F-75005 Paris, France
| | - Juliette Blanchard
- Sorbonne Université, CNRS, Laboratoire de Réactivité de Surface (LRS), 4 place Jussieu, F-75005 Paris, France
| | - Souhir Boujday
- Sorbonne Université, CNRS, Laboratoire de Réactivité de Surface (LRS), 4 place Jussieu, F-75005 Paris, France
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16
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Shukla A, Shao S, Carter-Searjeant S, Haigh S, Richards D, Green M, Zayats AV. Carrier density tuning in CuS nanoparticles and thin films by Zn doping via ion exchange. NANOSCALE 2023; 15:3730-3736. [PMID: 36734034 DOI: 10.1039/d3nr00139c] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Copper sulphide (covellite) nanoplatelets have recently emerged as a plasmonic platform in the near-infrared with ultrafast nonlinear optical properties. Here we demonstrate that the free-carrier density in CuS, which is an order of magnitude lower than in traditional plasmonic metals, can be further tuned by chemical doping. Using ion exchange to replace Cu with an increasing content of Zn in the nanoparticles, the free-hole density can be lowered, resulting in a long-wavelength shift of the localised plasmon resonances from 1250 nm to 1750 nm. The proposed approach provides new opportunities for tuning the plasmonic response of covellite nanocrystals as well as the carrier relaxation time which decreases for lower free-carrier densities.
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Affiliation(s)
- Amaresh Shukla
- Department of Physics and London Centre for Nanotechnology, King's College London, Strand, London WC2R 2LS, UK.
| | - Shouqi Shao
- Department of Materials, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Sadie Carter-Searjeant
- Department of Physics and London Centre for Nanotechnology, King's College London, Strand, London WC2R 2LS, UK.
| | - Sarah Haigh
- Department of Materials, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - David Richards
- Department of Physics and London Centre for Nanotechnology, King's College London, Strand, London WC2R 2LS, UK.
| | - Mark Green
- Department of Physics and London Centre for Nanotechnology, King's College London, Strand, London WC2R 2LS, UK.
| | - Anatoly V Zayats
- Department of Physics and London Centre for Nanotechnology, King's College London, Strand, London WC2R 2LS, UK.
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17
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High-density amine-functionalized MCM-41 derived from pumice: facile synthesis and antibiotic adsorption. Polym Bull (Berl) 2023. [DOI: 10.1007/s00289-023-04685-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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18
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Sypabekova M, Hagemann A, Rho D, Kim S. Review: 3-Aminopropyltriethoxysilane (APTES) Deposition Methods on Oxide Surfaces in Solution and Vapor Phases for Biosensing Applications. BIOSENSORS 2022; 13:bios13010036. [PMID: 36671871 PMCID: PMC9856095 DOI: 10.3390/bios13010036] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 12/19/2022] [Accepted: 12/23/2022] [Indexed: 05/31/2023]
Abstract
Surface functionalization and bioreceptor immobilization are critical processes in developing a highly sensitive and selective biosensor. The silanization process with 3-aminopropyltriethoxysilane (APTES) on oxide surfaces is frequently used for surface functionalization because of beneficial characteristics such as its bifunctional nature and low cost. Optimizing the deposition process of the APTES layer to obtain a monolayer is crucial to having a stable surface and effectively immobilizing the bioreceptors, which leads to the improved repeatability and sensitivity of the biosensor. This review provides an overview of APTES deposition methods, categorized into the solution-phase and vapor-phase, and a comprehensive summary and guide for creating stable APTES monolayers on oxide surfaces for biosensing applications. A brief explanation of APTES is introduced, and the APTES deposition methods with their pre/post-treatments and characterization results are discussed. Lastly, APTES deposition methods on nanoparticles used for biosensors are briefly described.
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Affiliation(s)
- Marzhan Sypabekova
- Department of Electrical & Computer Engineering, Baylor University, Waco, TX 76798, USA
| | - Aidan Hagemann
- Department of Electrical & Computer Engineering, Baylor University, Waco, TX 76798, USA
| | - Donggee Rho
- Center for Nano Bio Development, National NanoFab Center (NNFC), Daejeon 34141, Republic of Korea
| | - Seunghyun Kim
- Department of Electrical & Computer Engineering, Baylor University, Waco, TX 76798, USA
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19
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Karawdeniya BI, Damry AM, Murugappan K, Manjunath S, Bandara YMNDY, Jackson CJ, Tricoli A, Neshev D. Surface Functionalization and Texturing of Optical Metasurfaces for Sensing Applications. Chem Rev 2022; 122:14990-15030. [PMID: 35536016 DOI: 10.1021/acs.chemrev.1c00990] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Optical metasurfaces are planar metamaterials that can mediate highly precise light-matter interactions. Because of their unique optical properties, both plasmonic and dielectric metasurfaces have found common use in sensing applications, enabling label-free, nondestructive, and miniaturized sensors with ultralow limits of detection. However, because bare metasurfaces inherently lack target specificity, their applications have driven the development of surface modification techniques that provide selectivity. Both chemical functionalization and physical texturing methodologies can modify and enhance metasurface properties by selectively capturing analytes at the surface and altering the transduction of light-matter interactions into optical signals. This review summarizes recent advances in material-specific surface functionalization and texturing as applied to representative optical metasurfaces. We also present an overview of the underlying chemistry driving functionalization and texturing processes, including detailed directions for their broad implementation. Overall, this review provides a concise and centralized guide for the modification of metasurfaces with a focus toward sensing applications.
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Affiliation(s)
- Buddini I Karawdeniya
- ARC Centre of Excellence for Transformative Meta Optical Systems (TMOS), Department of Electronic Materials Engineering, Research School of Physics, The Australian National University, Canberra, ACT 2600, Australia
| | - Adam M Damry
- Research School of Chemistry, College of Science, The Australian National University, Canberra, ACT 2601, Australia
| | - Krishnan Murugappan
- Research School of Chemistry, College of Science, The Australian National University, Canberra, ACT 2601, Australia
| | - Shridhar Manjunath
- ARC Centre of Excellence for Transformative Meta Optical Systems (TMOS), Department of Electronic Materials Engineering, Research School of Physics, The Australian National University, Canberra, ACT 2600, Australia
| | - Y M Nuwan D Y Bandara
- ARC Centre of Excellence for Transformative Meta Optical Systems (TMOS), Department of Electronic Materials Engineering, Research School of Physics, The Australian National University, Canberra, ACT 2600, Australia
| | - Colin J Jackson
- Research School of Chemistry, College of Science, The Australian National University, Canberra, ACT 2601, Australia
| | - Antonio Tricoli
- Research School of Chemistry, College of Science, The Australian National University, Canberra, ACT 2601, Australia
- School of Biomedical Engineering, Faculty of Engineering, The University of Sydney, Camperdown, NSW 2006, Australia
| | - Dragomir Neshev
- ARC Centre of Excellence for Transformative Meta Optical Systems (TMOS), Department of Electronic Materials Engineering, Research School of Physics, The Australian National University, Canberra, ACT 2600, Australia
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20
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Ma R, Lu X, Zhang S, Ren K, Gu J, Liu C, Liu Z, Wang H. Constructing discontinuous silicon-island structure with low surface energy based on the responsiveness of hydrophilic layers to improve the anti-fouling property of membranes. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120770] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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21
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Bartschmid T, Farhadi A, Musso ME, Goerlitzer ESA, Vogel N, Bourret GR. Self-Assembled Au Nanoparticle Monolayers on Silicon in Two- and Three-Dimensions for Surface-Enhanced Raman Scattering Sensing. ACS APPLIED NANO MATERIALS 2022; 5:11839-11851. [PMID: 36062062 PMCID: PMC9425434 DOI: 10.1021/acsanm.2c01904] [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: 06/30/2022] [Accepted: 08/03/2022] [Indexed: 05/05/2023]
Abstract
Gold nanoparticle/silicon composites are canonical substrates for sensing applications because of their geometry-dependent physicochemical properties and high sensing activity via surface-enhanced Raman spectroscopy (SERS). The self-assembly of gold nanoparticles (AuNPs) synthesized via wet-chemistry on functionalized flat silicon (Si) and vertically aligned Si nanowire (VA-SiNW) arrays is a simple and cost-effective approach to prepare such substrates. Herein, we report on the critical parameters that influence nanoparticle coverage, aggregation, and assembly sites in two- and three-dimensions to prepare substrates with homogeneous optical properties and SERS activity. We show that the degree of AuNP aggregation on flat Si depends on the silane used for the Si functionalization, while the AuNP coverage can be adjusted by the incubation time in the AuNP solution, both of which directly affect the substrate properties. In particular, we report the reproducible synthesis of nearly touching AuNP chain monolayers where the AuNPs are separated by nanoscale gaps, likely to be formed due to the capillary forces generated during the drying process. Such substrates, when used for SERS sensing, produce a uniform and large enhancement of the Raman signal due to the high density of hot spots that they provide. We also report the controlled self-assembly of AuNPs on VA-SiNW arrays, which can provide even higher Raman signal enhancement. The directed assembly of the AuNPs in specific regions of the SiNWs with a control over NP density and monolayer morphology (i.e., isolated vs nearly touching NPs) is demonstrated, together with its influence on the resulting SERS activity.
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Affiliation(s)
- Theresa Bartschmid
- Department
of Chemistry and Physics of Materials, University
of Salzburg, Jakob Haringer Strasse 2A, 5020 Salzburg, Austria
| | - Amin Farhadi
- Department
of Chemistry and Physics of Materials, University
of Salzburg, Jakob Haringer Strasse 2A, 5020 Salzburg, Austria
| | - Maurizio E. Musso
- Department
of Chemistry and Physics of Materials, University
of Salzburg, Jakob Haringer Strasse 2A, 5020 Salzburg, Austria
| | - Eric Sidney Aaron Goerlitzer
- Institute
of Particle Technology, Friedrich-Alexander University Erlangen-Nürnberg, Cauerstrasse 4, 91058 Erlangen, Germany
| | - Nicolas Vogel
- Institute
of Particle Technology, Friedrich-Alexander University Erlangen-Nürnberg, Cauerstrasse 4, 91058 Erlangen, Germany
| | - Gilles R. Bourret
- Department
of Chemistry and Physics of Materials, University
of Salzburg, Jakob Haringer Strasse 2A, 5020 Salzburg, Austria
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22
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Sato T, Amano A, Dunderdale GJ, Hozumi A. Transparent Composite Films Showing Durable Antifogging and Repeatable Self-Healing Properties Based on an Integral Blend Method. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:9874-9883. [PMID: 35920887 DOI: 10.1021/acs.langmuir.2c01085] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Antifogging coatings for infrastructures and transparent objects have attracted much attention lately from the perspective of safety and visibility. We have developed a one-pot process to fabricate transparent composite films showing long-lasting antifogging and fast repeatable self-healing properties based on an integral blend (IB) method. This method does not require any specific pretreatments of inorganic fillers/particles. Thus, the precursor solutions could be prepared in a single step by simply mixing raw materials, e.g., poly(vinylpyrrolidone) (PVP) having different molecular weights (MWs: 55, 360, and 1300 k), nano-clay particles (NCPs), and amino-terminated organosilane (AOS). In this study, to control the degree of cross-linking between the PVP matrices and NCPs, addition of AOS as a cross-linker to the PVP matrices (weight percentage of AOS to the PVP matrices, α = 0.01-300%) was carefully controlled. Transparency and self-healing abilities/kinetics of the resulting samples were found to be strongly influenced by both the MWs of PVP and α values. Samples spin-coated with the lowest MW of PVP (55 k) and α values of 0.01-1% gave highly transparent and durable antifogging performance. For example, no fogging was observed for 7 days under >80% relative humidity, and scratches about 30 μm in width could be completely self-healed within a few hours. However, samples with α > 10% gave opaque/grayish films that did not show any self-healing abilities because of an increase in cross-linking of the matrices. The optimized precursor solution was also deposited directly onto the glass slides covered with a transparent porous silica nano-framework (SNF) by a spray-coating method. Due to the formation of the hard and superhydrophilic/hygroscopic SNF with a large surface area, durability of antifogging and self-healing properties of the composite films were moderately improved, compared to those on the flat glass slides.
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Affiliation(s)
- Tomoya Sato
- National Institute of Advanced Industrial Science and Technology (AIST), 2266-98, Anagahora, Shimoshidami, Moriyama, Nagoya 463-8560, Japan
| | - Asei Amano
- National Institute of Advanced Industrial Science and Technology (AIST), 2266-98, Anagahora, Shimoshidami, Moriyama, Nagoya 463-8560, Japan
- Graduate School of Engineering, Aichi Institute of Technology (AIT), 1247 Yachigusa, Yakusa, Toyoya 470-0392, Japan
| | - Gary J Dunderdale
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, U.K
| | - Atsushi Hozumi
- National Institute of Advanced Industrial Science and Technology (AIST), 2266-98, Anagahora, Shimoshidami, Moriyama, Nagoya 463-8560, Japan
- Graduate School of Engineering, Aichi Institute of Technology (AIT), 1247 Yachigusa, Yakusa, Toyoya 470-0392, Japan
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Widyasari DA, Kristiani A, Randy A, Manurung RV, Dewi RT, Andreani AS, Yuliarto B, Jenie SNA. Optimized antibody immobilization on natural silica-based nanostructures for the selective detection of E. coli. RSC Adv 2022; 12:21582-21590. [PMID: 35975066 PMCID: PMC9346624 DOI: 10.1039/d2ra03143d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 07/12/2022] [Indexed: 11/21/2022] Open
Abstract
This study reports for the first time the surface modification of fluorescent nanoparticles derived from geothermal silica precipitate with Escherichia coli (E. coli) antibody. The immobilization of biomolecules on the inorganic surface has been carried out using two different pathways, namely the silanization and hydrosilylation reactions. The former applied (3-aminopropyl)triethoxysilane (APTES) as the crosslinker, while the latter used N-hydroxysuccinimide coupled with N-ethyl-N′-(3-dimethyl aminopropyl) carbodiimide hydrochloride (EDC/NHS). Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy with energy dispersive X-ray spectroscopy (FESEM-EDX), and fluorescence spectroscopy were used to confirm the chemical, physical, and optical properties of the surface-modified fluorescent silica nanoparticles (FSNPs). Based on the results of the FTIR, fluorescence spectroscopy and stability tests, the modified FSNPs with EDC/NHS with a ratio of 4 : 1 were proven to provide the optimum results for further conjugation with antibodies, affording the FSNP-Ab2 sample. The FSNP-Ab2 sample was further tested as a nanoplatform for the fluorescence-quenching detection of E. coli, which provided a linear range of 102 to 107 CFU mL−1 for E. coli with a limit of detection (LoD) of 1.6 × 102 CFU mL−1. The selectivity of the biosensor was observed to be excellent for E. coli compared to that for P. aeruginosa and S. typhimurium, with reductions in the maximum fluorescence intensity at 588 nm of 89.22%, 26.23%, and 54.06%, respectively. The inorganic nanostructure–biomolecule conjugation with optimized coupling agents showed promising analytical performance as a selective nanoplatform for detecting E. coli bacteria. This work describes for the first time the surface modification of natural-based fluorescent nanoparticles with antibodies as optical biosensing platforms.![]()
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Affiliation(s)
- Diaz Ayu Widyasari
- Research Centre for Chemistry, National Research and Innovation Agency (BRIN) Kawasan PUSPIPTEK, Building 452, Serpong Tangerang Selatan 15314 Banten Indonesia .,Department of Physics Engineering, Research Centre for Nanosciences and Nanotechnology, Institut Teknologi Bandung (ITB) Jl. Ganesha 10 Bandung 40312 Jawa Barat Indonesia
| | - Anis Kristiani
- Research Centre for Chemistry, National Research and Innovation Agency (BRIN) Kawasan PUSPIPTEK, Building 452, Serpong Tangerang Selatan 15314 Banten Indonesia
| | - Ahmad Randy
- Research Centre for Raw Material for Medicine and Traditional Medicine, National Research and Innovation Agency (BRIN) Kawasan PUSPIPTEK, Serpong Tangerang Selatan 15314 Banten Indonesia
| | - Robeth V Manurung
- BRIN and ITB Collaboration Research Center for Biosensor and Biodevices Jl. Ganesha 10 Bandung 40132 Jawa Barat Indonesia.,Research Centre for Telecommunications, National Research and Innovation Agency (BRIN) Komplek LIPI Gd. 20, Jl. Cisitu Lama, Dago, Kecamatan Coblong Bandung 40135 Jawa Barat Indonesia
| | - Rizna Triana Dewi
- Research Centre for Raw Material for Medicine and Traditional Medicine, National Research and Innovation Agency (BRIN) Kawasan PUSPIPTEK, Serpong Tangerang Selatan 15314 Banten Indonesia
| | - Agustina Sus Andreani
- Research Centre for Chemistry, National Research and Innovation Agency (BRIN) Kawasan PUSPIPTEK, Building 452, Serpong Tangerang Selatan 15314 Banten Indonesia .,BRIN and ITB Collaboration Research Center for Biosensor and Biodevices Jl. Ganesha 10 Bandung 40132 Jawa Barat Indonesia
| | - Brian Yuliarto
- Department of Physics Engineering, Research Centre for Nanosciences and Nanotechnology, Institut Teknologi Bandung (ITB) Jl. Ganesha 10 Bandung 40312 Jawa Barat Indonesia.,BRIN and ITB Collaboration Research Center for Biosensor and Biodevices Jl. Ganesha 10 Bandung 40132 Jawa Barat Indonesia
| | - S N Aisyiyah Jenie
- Research Centre for Chemistry, National Research and Innovation Agency (BRIN) Kawasan PUSPIPTEK, Building 452, Serpong Tangerang Selatan 15314 Banten Indonesia .,BRIN and ITB Collaboration Research Center for Biosensor and Biodevices Jl. Ganesha 10 Bandung 40132 Jawa Barat Indonesia
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Rim M, Kang DG, Jung D, Lim SI, Lee KM, Godman NP, McConney ME, De Sio L, Ahn SK, Jeong KU. Remote-controllable and encryptable smart glasses: a photoresponsive azobenzene molecular commander determines the molecular alignments of liquid crystal soldiers. NANOSCALE 2022; 14:8271-8280. [PMID: 35586949 DOI: 10.1039/d2nr01382g] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
For the development of optically encryptable smart glass that can control the molecular alignment of liquid crystals (LCs), an azobenzene-based reactive molecule (ARM) capable of trans-cis photoisomerization is newly designed and synthesized. Photo-triggered LC-commandable smart glasses are successfully constructed by the surface functionalization technique using 3-aminopropyltriethoxysilane (APTMS) coupling agent and an ARM. The surface functionalization with the ARM is verified by spectroscopic analysis and various observations including changes in the wettability and surface morphology. Using the ARM-treated substrate, the LC command cell which can effectively switch the molecular orientation of nematic LC (E7) by the irradiation of UV and visible light is demonstrated. The results of optical investigation demonstrate the directional correlation between light and photoisomerization, revealing the tilt mechanism of azobenzene units. The capability to control the molecular orientation of LCs remotely and selectively allows the development of remote-controllable and encryptable smart glasses.
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Affiliation(s)
- Minwoo Rim
- Department of Polymer-Nano Science and Technology, Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea.
| | - Dong-Gue Kang
- Department of Polymer-Nano Science and Technology, Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea.
| | - Dayoung Jung
- Department of Polymer-Nano Science and Technology, Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea.
| | - Seok-In Lim
- Department of Polymer-Nano Science and Technology, Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea.
| | - Kyung Min Lee
- US Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA
| | - Nicholas P Godman
- US Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA
| | - Michael E McConney
- US Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA
| | - Luciano De Sio
- Department of Medico-Surgical Science and Biotechnologies, Center for Biophotonics, Sapienza University of Rome, Latina 04100, Italy
| | - Suk-Kyun Ahn
- Department of Polymer Science and Engineering, Pusan National University, Busan 46241, Republic of Korea.
| | - Kwang-Un Jeong
- Department of Polymer-Nano Science and Technology, Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea.
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25
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Liang H, Zhou L, Chen P, Zheng J, Huang Y, Liang J, Zhong J, Huang Y, Yu M, Guan BO. Optical Microfiber with a Gold Nanorods-Black Phosphorous Nanointerface: An Ultrasensitive Biosensor and Nanotherapy Platform. Anal Chem 2022; 94:8058-8065. [PMID: 35611971 DOI: 10.1021/acs.analchem.2c01499] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The detection and therapy of cancers in the early stage significantly alleviate the associated dangers. Optical devices offer new opportunities for these early measures. However, the clinical translation of the existing methods is severely hindered by their relatively low sensitivity or unclear physiological metabolism. Here, an optical microfiber sensor with a drug loading gold nanorod-black phosphorous nanointerface, as an ultrasensitive biosensor and nanotherapy platform, is developed to meet the early-stage requirement. With interface sensitization and functionalization of the hybrid nanointerface, the microfiber sensor presents an ultrahigh sensing performance, achieving the selective detection of the HER2 biomarker with limits of detection of 0.66 aM in buffer solution and 0.77 aM in 10% serum. It can also distinguish breast cancer cells from other cells in the early stage. Additionally, enabled by the interface, the optical microfiber is able to realize cellular nanotherapy, including photothermal/chemotherapy with pump laser coupling after diagnosis, and evaluate therapy results in real time. The immobilization of the interface on the optical microfiber surface prevents the damage to normal cells induced by nanomaterial enrichment, making the device more efficient and intelligent. This study opens up a new avenue for the development of smart optical platforms for sensitive biosensing and precision therapy.
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Affiliation(s)
- He Liang
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511143, China
| | - Luyan Zhou
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511143, China
| | - Pengwei Chen
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511143, China
| | - Jiaying Zheng
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511143, China
| | - Yunyun Huang
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511143, China
| | - Jiaxuan Liang
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511143, China
| | - Junyang Zhong
- School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Yugang Huang
- School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Mingguang Yu
- School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, China
| | - Bai-Ou Guan
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511143, China
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Ailawar S, Hunoor A, Basu D, Rudzinski B, Burel L, Millet JMM, Miller JT, Edmiston PL, Ozkan US. Aqueous Phase Hydrodechlorination of Trichloroethylene using Pd Supported on Swellable Organically Modified Silica (SOMS): Effect of Support Derivatization. J Catal 2022. [DOI: 10.1016/j.jcat.2022.04.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Chakraborty T, Das M, Lin CY, Lei KF, Kao CH. Highly sensitive and selective electrochemical detection of lipocalin 2 by NiO nanoparticles/perovskite CeCuOx based immunosensor to diagnose renal failure. Anal Chim Acta 2022; 1205:339754. [DOI: 10.1016/j.aca.2022.339754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 03/14/2022] [Accepted: 03/20/2022] [Indexed: 11/01/2022]
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Smits J, Prasad Giri R, Shen C, Mendonça D, Murphy B, Huber P, Rezwan K, Maas M. Assessment of nanoparticle immersion depth at liquid interfaces from chemically equivalent macroscopic surfaces. J Colloid Interface Sci 2022; 611:670-683. [PMID: 34974227 DOI: 10.1016/j.jcis.2021.12.113] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 12/14/2021] [Accepted: 12/18/2021] [Indexed: 01/22/2023]
Abstract
HYPOTHESIS We test whether the wettability of nanoparticles (NPs) straddling at an air/water surface or oil/water interface can be extrapolated from sessile drop-derived macroscopic contact angles (mCAs) on planar substrates, assuming that both the nanoparticles and the macroscopic substrates are chemically equivalent and feature the same electrokinetic potential. EXPERIMENTS Pure silica (SiO2) and amino-terminated silica (APTES-SiO2) NPs are compared to macroscopic surfaces with extremely low roughness (root mean square [RMS] roughness ≤ 2 nm) or a roughness determined by a close-packed layer of NPs (RMS roughness ∼ 35 nm). Equivalence of the surface chemistry is assessed by comparing the electrokinetic potentials of the NPs via electrophoretic light scattering and of the macroscopic substrates via streaming current analysis. The wettability of the macroscopic substrates is obtained from advancing (ACAs) and receding contact angles (RCAs) and in situ synchrotron X-ray reflectivity (XRR) provided by the NP wettability at the liquid interfaces. FINDINGS Generally, the RCA on smooth surfaces provides a good estimate of NP wetting properties. However, mCAs alone cannot predict adsorption barriers that prevent NP segregation to the interface, as is the case with the pure SiO2 nanoparticles. This strategy greatly facilitates assessing the wetting properties of NPs for applications such as emulsion formulation, flotation, or water remediation.
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Affiliation(s)
- Joeri Smits
- Advanced Ceramics, University of Bremen, Am Biologischen Garten 2, Bremen D-28359, Germany.
| | - Rajendra Prasad Giri
- Institute of Experimental and Applied Physics, Kiel University, Kiel D-24098, Germany.
| | - Chen Shen
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, Hamburg D-22607, Germany.
| | - Diogo Mendonça
- Advanced Ceramics, University of Bremen, Am Biologischen Garten 2, Bremen D-28359, Germany; Department of Mechanical Engineering, Federal University of Santa Catarina, Florianopolis 88040-900, Brazil.
| | - Bridget Murphy
- Institute of Experimental and Applied Physics, Kiel University, Kiel D-24098, Germany; Ruprecht-Haensel Laboratory, Kiel University, Kiel 24118, Germany.
| | - Patrick Huber
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, Hamburg D-22607, Germany; Hamburg University of Technology, Institute for Materials and X-Ray Physics, Eißendorfer Straße 42, Hamburg 21073, Germany; Hamburg University, Center for Hybrid Nanostructures ChyN, Luruper Chaussee 149, Hamburg 22607, Germany.
| | - Kurosch Rezwan
- Advanced Ceramics, University of Bremen, Am Biologischen Garten 2, Bremen D-28359, Germany; MAPEX Center for Materials and Processes, University of Bremen, Bibliothekstraße 1, Bremen D-28359, Germany.
| | - Michael Maas
- Advanced Ceramics, University of Bremen, Am Biologischen Garten 2, Bremen D-28359, Germany; MAPEX Center for Materials and Processes, University of Bremen, Bibliothekstraße 1, Bremen D-28359, Germany.
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29
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Shanmugaraj K, Bustamante TM, Torres CC, Campos CH. Gold nanoparticles supported on mesostructured oxides for the enhanced catalytic reduction of 4-nitrophenol in water. Catal Today 2022. [DOI: 10.1016/j.cattod.2020.05.051] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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30
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Doering U, Grigoriev D, Tapio K, Bald I, Böker A. Synthesis of nanostructured protein-mineral-microcapsules by sonication. SOFT MATTER 2022; 18:2558-2568. [PMID: 35294511 DOI: 10.1039/d1sm01638e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We propose a simple and eco-friendly method for the formation of composite protein-mineral-microcapsules induced by ultrasound treatment. Protein- and nanoparticle-stabilized oil-in-water (O/W) emulsions loaded with different oils are prepared using high-intensity ultrasound. The formation of thin composite mineral proteinaceous shells is realized with various types of nanoparticles, which are pre-modified with Bovine Serum Albumin (BSA) and subsequently characterized by EDX, TGA, zeta potential measurements and Raman spectroscopy. Cryo-SEM and EDX mapping visualizations show the homogeneous distribution of the densely packed nanoparticles in the capsule shell. In contrast to the results reported in our previous paper,1 the shell of those nanostructured composite microcapsules is not cross-linked by the intermolecular disulfide bonds between BSA molecules. Instead, a Pickering-Emulsion formation takes place because of the amphiphilicity-driven spontaneous attachment of the BSA-modified nanoparticles at the oil/water interface. Using colloidal particles for the formation of the shell of the microcapsules, in our case silica, hydroxyapatite and calcium carbonate nanoparticles, is promising for the creation of new functional materials. The nanoparticulate building blocks of the composite shell with different chemical, physical or morphological properties can contribute to additional, sometimes even multiple, features of the resulting capsules. Microcapsules with shells of densely packed nanoparticles could find interesting applications in pharmaceutical science, cosmetics or in food technology.
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Affiliation(s)
- Ulrike Doering
- University of Potsdam, Institute of Chemistry, Karl-Liebknecht-Str. 24-25, 14476, Potsdam, Germany
| | - Dmitry Grigoriev
- Fraunhofer Institute for Applied Polymer Research IAP, Geiselbergstr. 69, 14476 Potsdam, Germany.
| | - Kosti Tapio
- University of Potsdam, Institute of Chemistry, Karl-Liebknecht-Str. 24-25, 14476, Potsdam, Germany
- University of Jyväskylä, Department of Physics and Nanoscience Center, P.O. Box 35, Fi-40014 Jyväskylä, Finland
| | - Ilko Bald
- University of Potsdam, Institute of Chemistry, Karl-Liebknecht-Str. 24-25, 14476, Potsdam, Germany
| | - Alexander Böker
- Fraunhofer Institute for Applied Polymer Research IAP, Geiselbergstr. 69, 14476 Potsdam, Germany.
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Grzelak J, Gázquez J, Grayston A, Teles M, Herranz F, Roher N, Rosell A, Roig A, Gich M. Magnetic Mesoporous Silica Nanorods Loaded with Ceria and Functionalized with Fluorophores for Multimodal Imaging. ACS APPLIED NANO MATERIALS 2022; 5:2113-2125. [PMID: 35252779 PMCID: PMC8886853 DOI: 10.1021/acsanm.1c03837] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 01/26/2022] [Indexed: 05/12/2023]
Abstract
Multifunctional magnetic nanocomposites based on mesoporous silica have a wide range of potential applications in catalysis, biomedicine, or sensing. Such particles combine responsiveness to external magnetic fields with other functionalities endowed by the agents loaded inside the pores or conjugated to the particle surface. Different applications might benefit from specific particle morphologies. In the case of biomedical applications, mesoporous silica nanospheres have been extensively studied while nanorods, with a more challenging preparation, have attracted much less attention despite the positive impact on the therapeutic performance shown by seminal studies. Here, we report on a sol-gel synthesis of mesoporous rodlike silica particles of two distinct lengths (1.4 and 0.9 μm) and aspect ratios (4.7 and 2.2) using Pluronic P123 as a structure-directing template and rendering ∼1 g of rods per batch. Iron oxide nanoparticles have been synthesized within the pores yielding maghemite (γ-Fe2O3) nanocrystals of elongated shape (∼7 nm × 5 nm) with a [110] preferential orientation along the rod axis and a superparamagnetic character. The performance of the rods as T2-weighted MRI contrast agents has also been confirmed. In a subsequent step, the mesoporous silica rods were loaded with a cerium compound and their surface was functionalized with fluorophores (fluorescamine and Cyanine5) emitting at λ = 525 and 730 nm, respectively, thus highlighting the possibility of multiple imaging modalities. The biocompatibility of the rods was evaluated in vitro in a zebrafish (Danio rerio) liver cell line (ZFL), with results showing that neither long nor short rods with magnetic particles caused cytotoxicity in ZFL cells for concentrations up to 50 μg/ml. We advocate that such nanocomposites can find applications in medical imaging and therapy, where the influence of shape on performance can be also assessed.
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Affiliation(s)
- Jan Grzelak
- Institut
de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Catalonia, Spain
| | - Jaume Gázquez
- Institut
de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Catalonia, Spain
| | - Alba Grayston
- Neurovascular
Research Laboratory, Vall d’Hebron
Research Institute (VHIR), 08035, Barcelona, Catalonia, Spain
| | - Mariana Teles
- Institute
of Biotechnology and Biomedicine (IBB), Universitat Autònoma de Barcelona, 08193 Bellaterra, Catalonia, Spain
| | - Fernando Herranz
- Instituto
de Química Médica (IQM), Consejo
Superior de Investigaciones Científicas (CSIC), 28006 Madrid, Spain
| | - Nerea Roher
- Institute
of Biotechnology and Biomedicine (IBB), Universitat Autònoma de Barcelona, 08193 Bellaterra, Catalonia, Spain
| | - Anna Rosell
- Neurovascular
Research Laboratory, Vall d’Hebron
Research Institute (VHIR), 08035, Barcelona, Catalonia, Spain
| | - Anna Roig
- Institut
de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Catalonia, Spain
| | - Martí Gich
- Institut
de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Catalonia, Spain
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Amphiphilic Janus Microspheres Prepared by Caged Photoactivatable Alkoxysilane. COATINGS 2022. [DOI: 10.3390/coatings12020198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A simple photolysis route was proposed to prepare Amphiphilic Janus Particles (AJP) based on SiO2 microspheres. The surface of SiO2 microspheres were modified by photoactive alkoxysilane, which was synthesized by dealcoholization condensation of 6-nitroveratroyloxycarbonyl and isocyanatopropyl-triethoxysilane. UV irradiation caused eater-breaking allowed for the precise control of hydrophilic modification of the hemispherical exposed particles surfaces. The component and morphology of the obtained particles were characterized by fourier transform infrared spectroscopy and ultraviolet-visible spectroscopy, and the Janus feature was evaluated by scanning electron microscopy, transmission electron microscopy, and dispersity in the oil–water dual-phases. The following results were obtained. The AJP with 450 nm size processes the hydrophilic amino groups on one side and the hydrophobic 6-nitroveratryloxycarbonyl moieties on the other. Additionally, the AJP were located at the phase boundary between water and n-hexane, and the negative charged gold nanoparticles with 25 nm size were adsorbed only onto the side with the positive charged amino groups. The AJP have interfacial adsorption energies that can be as much as three times larger than that of homogeneous particles and thus exhibit excellent surface activities.
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Adsorption of arsenide through functionalized optical fiber: a finite model in silico approach as a perspective for sensing application. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-021-02013-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Keshta BE, Gemeay AH, Khamis AA. Impacts of horseradish peroxidase immobilization onto functionalized superparamagnetic iron oxide nanoparticles as a biocatalyst for dye degradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:6633-6645. [PMID: 34455562 DOI: 10.1007/s11356-021-16119-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 08/19/2021] [Indexed: 06/13/2023]
Abstract
To enhance the dye removal efficiency by natural enzyme, horseradish peroxidase (HRP) was immobilized onto amine-functionalized superparamagnetic iron oxide and used as a biocatalyst for the oxidative degradation of acid black-HC dye. The anchored enzyme was characterized by vibrating sample magnetometry, Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetry, scanning electron microscopy, Brunauer-Emmett-Teller and Barrett-Joyner-Halenda methods, nitrogen adsorption-desorption measurements, Zeta potential, energy dispersive X-ray spectroscopy, and transmission electron microscopy. The Michaelis constant values of free and immobilized HRP were determined to be 4.5 and 5 mM for hydrogen peroxide and 12.5 and 10 mM for guaiacol, respectively. Moreover, the maximum values of free and immobilized HRP were 2.4 and 2 U for H2O2, respectively, and 1.25 U for guaiacol. The immobilized enzyme was thermally stable up to 60°C, whereas the free peroxidase was stable only up to 40°C. In the catalytic experiment, the immobilized HRP exhibited superior catalytic activity compared with that of free HRP for the oxidative decolorization and removal of acid black-HC dye. The influence of experimental parameters such as the catalyst dosage, pH, H2O2 concentration, and temperature on the removal efficiency was investigated. The reaction followed second-order kinetics, and the thermodynamic activation parameters were determined.
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Affiliation(s)
- Basem E Keshta
- Chemistry Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Ali H Gemeay
- Chemistry Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Abeer A Khamis
- Biochemistry Division, Chemistry Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt.
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Kotliarevski L, Mani KA, Feldbaum RA, Yaakov N, Belausov E, Zelinger E, Ment D, Mechrez G. Single-Conidium Encapsulation in Oil-in-Water Pickering Emulsions at High Encapsulation Yield. Front Chem 2021; 9:726874. [PMID: 34912776 PMCID: PMC8666500 DOI: 10.3389/fchem.2021.726874] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 11/10/2021] [Indexed: 12/02/2022] Open
Abstract
This study presents an individual encapsulation of fungal conidia in an oil-in-water Pickering emulsion at a single-conidium encapsulation yield of 44%. The single-conidium encapsulation yield was characterized by analysis of confocal microscopy micrographs. Mineral oil-in-water emulsions stabilized by amine-functionalized titania dioxide (TiO2-NH2 or titania-NH2) particles were prepared. The structure and the stability of the emulsions were investigated at different compositions by confocal microscopy and a LUMiSizer® respectively. The most stable emulsions with a droplet size suitable for single-conidium encapsulation were further studied for their individual encapsulation capabilities. The yields of individual encapsulation in the emulsions; i.e., the number of conidia that were individually encapsulated out of the total number of conidia, were characterized by confocal microscopy assay. This rapid, easy to use approach to single-conidium encapsulation, which generates a significantly high yield with eco-friendly titania-based emulsions, only requires commonly used emulsification and agitation methods.
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Affiliation(s)
- Liliya Kotliarevski
- Department of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Institute, Rishon Lezion, Israel.,Institute of Biochemistry, Food Science and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Karthik Ananth Mani
- Department of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Institute, Rishon Lezion, Israel.,Institute of Biochemistry, Food Science and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Reut Amar Feldbaum
- Department of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Institute, Rishon Lezion, Israel
| | - Noga Yaakov
- Department of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Institute, Rishon Lezion, Israel
| | - Eduard Belausov
- Department of Ornamental Plants and Agricultural Biotechnology, Institute of Plant Science, Agricultural Research Organization (ARO), Volcani Institute, Rishon Lezion, Israel
| | - Einat Zelinger
- Institute of Biochemistry, Food Science and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Dana Ment
- Department of Plant Pathology and Weed Research, Institute of Plant Protection, Agricultural Research Organization (ARO), Volcani Institute, Rishon Lezion, Israel
| | - Guy Mechrez
- Department of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Institute, Rishon Lezion, Israel
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Layer-by-layer assembly of nanofilms from colloidally stable amine-functionalized silica nanoparticles. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127615] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Soliman AIA, Wu CT, Utsunomiya T, Ichii T, Sugimura H. Controlled Growth of Organosilane Micropatterns on Hydrophilic and Hydrophobic Surfaces Templated by Vacuum Ultraviolet Photolithography. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:13932-13940. [PMID: 34780193 DOI: 10.1021/acs.langmuir.1c02516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this report, micropatterns of (3-aminopropyl)trimethoxysilane (APTMS) were developed on hydrophilic and hydrophobic surfaces after patterning using 172 nm vacuum ultraviolet (VUV) photolithography. Self-assembled monolayers (SAMs) formed on Si substrates through UV hydrosilylation of 1-hexadecene (HD) and 10-undecenoic acid (UDA) were used as hydrophilic and hydrophobic surfaces, respectively. For templating the HD- and UDA-SAMs, the VUV light was exposed to HD- and UDA-SAMs from the slits of photomasks in atmospheric and evacuated environments, respectively. Various oxygenated groups were generated at the exposed domains of HD-SAM, while the COOH groups were trimmed from the irradiated domains of UDA-SAM. The APTMS molecules were immobilized on the domains that were terminated by oxygenated groups after chemical vapor deposition (CVD). The thicknesses of the developed APTMS micropatterns increased significantly by raising the CVD temperature and in the presence of ambient air in the CVD Teflon container as well. The increase in thicknesses was ascribed to the formation of APTMS multilayers, which were mediated by H3N+ ions. Also, the developed APTMS micropatterns on the UDA-SAM patterned by VUV light irradiation in a high-vacuum environment (HV-VUV) were thicker than those on the VUV/(O) patterned HD-SAM due to the presence of inactive oxygenated groups at the surface of VUV/(O)-terminated domains of HD-SAM such as COO-C and C-O-C groups. The presence of water or ambient air facilitated the silane coupling between the silyl groups with the oxygenated and amino groups The combination of VUV photolithography and the CVD method with control of the conditions would enable us to control the thicknesses and shapes of the developed APTMS micropatterns. These findings illustrate the applicability of VUV photolithography for templating hydrophobic and hydrophobic surfaces toward the development of organosilane architectures, which can be feasible for several applications.
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Affiliation(s)
- Ahmed I A Soliman
- Department of Materials Science and Engineering, Kyoto University, Yoshida-hommachi, Sakyo-Ku, Kyoto 606-8501, Japan
- Chemistry Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Cheng-Tse Wu
- Department of Materials Science and Engineering, Kyoto University, Yoshida-hommachi, Sakyo-Ku, Kyoto 606-8501, Japan
| | - Toru Utsunomiya
- Department of Materials Science and Engineering, Kyoto University, Yoshida-hommachi, Sakyo-Ku, Kyoto 606-8501, Japan
| | - Takashi Ichii
- Department of Materials Science and Engineering, Kyoto University, Yoshida-hommachi, Sakyo-Ku, Kyoto 606-8501, Japan
| | - Hiroyuki Sugimura
- Department of Materials Science and Engineering, Kyoto University, Yoshida-hommachi, Sakyo-Ku, Kyoto 606-8501, Japan
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Park H, Lee SH. Review on Interfacial Bonding Mechanism of Functional Polymer Coating on Glass in Atomistic Modeling Perspective. Polymers (Basel) 2021; 13:polym13142244. [PMID: 34301000 PMCID: PMC8309365 DOI: 10.3390/polym13142244] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/03/2021] [Accepted: 07/05/2021] [Indexed: 01/03/2023] Open
Abstract
Atomistic modeling methods are successfully applied to understand interfacial interaction in nanoscale size and analyze adhesion mechanism in the organic-inorganic interface. In this paper, we review recent representative atomistic simulation works, focusing on the interfacial bonding, adhesion strength, and failure behavior between polymer film and silicate glass. The simulation works are described under two categories, namely non-bonded and bonded interaction. In the works for non-bonded interaction, three main interactions, namely van der Waals interaction, polar interaction, and hydrogen bonds, are investigated, and the contributions to interfacial adhesion energy are analyzed. It is revealed that the most dominant interaction for adhesion is hydrogen bonding, but flexibility of the polymer film and modes of adhesion measurement test do affect adhesion and failure behavior. In the case of bonded interactions, the mechanism of covalent silane bond formation through condensation and hydrolysis process is reviewed, and surface reactivity, molecular density, and adhesion properties are calculated with an example of silane functionalized polymer. Besides interfacial interactions, effects of external conditions, such as surface morphology of the glass substrate and relative humidity on the adhesion and failure behavior, are presented, and modeling techniques developed for building interfacial system and calculating adhesion strengths are briefly introduced.
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Guleria A, Tomy A, Baby CM, Gandhi V, Kunwar A, Debnath AK, Adhikari S. Electron beam mediated synthesis of photoluminescent organosilicon nanoparticles in TX-100 micellar medium and their prospective applications. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Amar Feldbaum R, Yaakov N, Ananth Mani K, Yossef E, Metbeev S, Zelinger E, Belausov E, Koltai H, Ment D, Mechrez G. Single cell encapsulation in a Pickering emulsion stabilized by TiO 2 nanoparticles provides protection against UV radiation for a biopesticide. Colloids Surf B Biointerfaces 2021; 206:111958. [PMID: 34237526 DOI: 10.1016/j.colsurfb.2021.111958] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 06/10/2021] [Accepted: 06/28/2021] [Indexed: 11/25/2022]
Abstract
A new formulation for biological pest control with significant UV protection capability has been developed in this research. The formulation is based on individual encapsulation of fungal conidia in an oil/water Pickering emulsion. The droplets size of the emulsions was tuned to meet the demands of single conidia encapsulation in the oil droplets. The emulsions are stabilized by amine-functionalized TiO2 (titania) nanoparticles (NPs). The droplet size, stability, and structure of the emulsions were investigated at different TiO2 contents and oil/water phase ratios. Most of the emulsions remained stable for 6 months. The structural properties of the Pickering emulsions were characterized by confocal microscopy and high-resolution cryogenic scanning electron microscopy (cryo-HRSEM). The presence of the TiO2 particles at the interface was confirmed by both confocal microscopy and cryo-HRSEM. Metarhizium brunneum-7 (Mb7) conidia were added to the emulsions. The successful encapsulation of individual conidia in the oil droplets was confirmed by confocal microscopy. The individual encapsulation of the conidia in the emulsions was significantly improved by dispersing the conidia in a 0.02 % Triton X-100 solution prior to emulsification. In addition, the bioassay results have shown, that exposure of the encapsulated conidia to natural UV light did not change their germination rates, however, the unprotected conidia demonstrated a dramatic decrease in their germination rates. These results confirm the UV protection capability of the studied emulsions.
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Affiliation(s)
- Reut Amar Feldbaum
- Department of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Center, 68 HaMaccabim Road, Rishon Letzion, 7505101, Israel; The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan, 5290002, Israel
| | - Noga Yaakov
- Department of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Center, 68 HaMaccabim Road, Rishon Letzion, 7505101, Israel
| | - Karthik Ananth Mani
- Department of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Center, 68 HaMaccabim Road, Rishon Letzion, 7505101, Israel; Institute of Biochemistry, Food Science and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, POB 12, Rehovot, 7610001, Israel
| | - Eden Yossef
- Department of Plant Pathology and Weed Research, Institute of Plant Protection, Agricultural Research Organization (ARO), Volcani Center, 68 HaMaccabim Road, Rishon Letzion, 7505101, Israel
| | - Sabina Metbeev
- Department of Plant Pathology and Weed Research, Institute of Plant Protection, Agricultural Research Organization (ARO), Volcani Center, 68 HaMaccabim Road, Rishon Letzion, 7505101, Israel
| | - Einat Zelinger
- The Interdepartmental Equipment Unit, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, POB 12, Rehovot, 7610001, Israel
| | - Eduard Belausov
- Department of Ornamental Plants and Agricultural Biotechnology, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, 68 HaMaccabim Road, Rishon Letzion, 7505101, Israel
| | - Hinanit Koltai
- Department of Ornamental Plants and Agricultural Biotechnology, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, 68 HaMaccabim Road, Rishon Letzion, 7505101, Israel
| | - Dana Ment
- Department of Plant Pathology and Weed Research, Institute of Plant Protection, Agricultural Research Organization (ARO), Volcani Center, 68 HaMaccabim Road, Rishon Letzion, 7505101, Israel
| | - Guy Mechrez
- Department of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Center, 68 HaMaccabim Road, Rishon Letzion, 7505101, Israel.
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3-Aminopropyltriethoxysilane (APTES) and heat treatment: a novel and simple route for gold nanoparticles anchored on silica substrate. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-020-01499-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sun C, Xu D, Hou C, Zhang H, Li Y, Zhang Q, Wang H, Zhu M. Core-shell structured SiO 2@ZrO 2@SiO 2 filler for radiopacity and ultra-low shrinkage dental composite resins. J Mech Behav Biomed Mater 2021; 121:104593. [PMID: 34090118 DOI: 10.1016/j.jmbbm.2021.104593] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 05/09/2021] [Accepted: 05/11/2021] [Indexed: 11/15/2022]
Abstract
To overcome the interfacial problem between X-ray radiopaque ZrO2 fillers and polymer resin in dental composites, monodispersed SiO2@ZrO2@SiO2 (SZS) microspheres with narrow size distribution were prepared by a controlled sol-gel method. In the presence of SiO2 coating layer over SiO2@ZrO2 (SZ) microspheres, they were easily silanized same as SiO2 microspheres. Ethoxylated bisphenol A dimethacrylate (EBPADMA) with a higher molecular weight and a lower viscosity was used as base resin monomer mixed with a low amount of diluent triethylene glycol dimethacrylate (TEGDMA). Additionally, the addition of a small amount of pore agent acetone dicarboxylic acid (ADCA) produced some voids, thereby effectively reducing the polymerization shrinkage of the resin. The prepared dental composites combining 52 wt% monodispersed silica microsphere, 20 wt% SZS microspheres, exhibited significantly enhanced capacity in radiopacity (higher than tooth enamel) and very low shrinkage (<0.1%). It also has better mechanical properties than resin composites filled with SiO2 microspheres, and its strength can meet practical applications. The properties of the radiopaque dental composite were to be further tuned by varying the amount of SZS microspheres contents, and the radiopaque resin has an advantage over the commercial one in that it is clinically nondestructive.
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Affiliation(s)
- Chuanyue Sun
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Dongyu Xu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Chengyi Hou
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Hui Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, PR China.
| | - Yaogang Li
- Engineering Research Center of Advanced Glasses Manufacturing Technology, Ministry of Education, Donghua University, Shanghai, 201620, PR China
| | - Qinghong Zhang
- Engineering Research Center of Advanced Glasses Manufacturing Technology, Ministry of Education, Donghua University, Shanghai, 201620, PR China.
| | - Hongzhi Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Meifang Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, PR China
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Ishizaki Y, Yamamoto S, Miyashita T, Mitsuishi M. pH-Responsive Ultrathin Nanoporous SiO 2 Films for Selective Ion Permeation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:5627-5634. [PMID: 33900779 DOI: 10.1021/acs.langmuir.1c00486] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Ultrathin nanoporous (NP) films are an emerging field for selective and effective ion/molecular separation and electrochemical sensing applications. We describe selective ion permeation in surface-functionalized ultrathin NP SiO2 films (NP SiO2-NH2). The ultrathin NP SiO2 films with ca. 8 nm thickness were prepared from silsesquioxane-containing blend polymer Langmuir-Blodgett films (nanosheets) using the photo-oxidation method. The porous SiO2 surface was modified with a pH-responsive amine-containing silane coupling agent. Selective ion permeation was demonstrated under acidic pH conditions (pH ≤ 6) using two equally sized redox probes: negative (Fe(CN)63-/4-) and positive (Ru(NH3)62+/3+) ions. The current density for Fe(CN)63-/4- decreased as the pH value increased to pH = 6, whereas it increased for Ru(NH3)62+/3+. Control measurements revealed that the probes can penetrate the pores of nonfunctionalized SiO2 films irrespective of pH values, indicating that both the size and the surface charge response contributed to selective ion permeation. Results obtained from this study pave the way for new applications in molecular separation and sensing applications based on ultrathin nanoporous films (<10 nm) and tailored surfaces.
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Affiliation(s)
- Yuya Ishizaki
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579, Japan
| | - Shunsuke Yamamoto
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579, Japan
| | - Tokuji Miyashita
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579, Japan
| | - Masaya Mitsuishi
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579, Japan
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Gholizadeh A, Chowdhury M, Agah M. Ionic liquid stationary phase coating optimization for semi-packed microfabricated columns. J Chromatogr A 2021; 1647:462144. [PMID: 33957352 DOI: 10.1016/j.chroma.2021.462144] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 03/10/2021] [Accepted: 04/06/2021] [Indexed: 11/28/2022]
Abstract
This work highlights the effect of the stationary phase coating process on the separation efficiency of gas chromatography microcolumns. The stationary phase coating quality was characterized by three different bis(trifluoromethylsulfonyl)imide (NTf2) anion based ionic liquids. The ionic liquids containing NTf2 anion are used for gas chromatography due to their high temperature stability. In this work, the chemical and physical approaches of column deactivation as well as the temperature treatment were evaluated by separating a mixture of 20 organic components and saturated alkanes. The results show that higher oven temperature treatment provides higher efficiency while losing a bit of peak symmetry. The thermal treated 1-butylpyridinum bis(trifluoromethylsulfonyl) imide [BPY][NTf2] stationary phase at 240°C demonstrated as high as 8300 plates per meter for naphthalene. This was a 5-fold increase in separation efficiency in comparison to those of the columns treated at 200°C. Albeit being within acceptable ranges, the peak tailing degraded from 1.17 to 1.46 for naphthalene when the processing temperature for coating increased. Both chemical and physical deactivation process increased separation efficiencies and peak resolution.
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Affiliation(s)
- Azam Gholizadeh
- VT MEMS Lab, Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA, 24061, United States
| | - Mustahsin Chowdhury
- VT MEMS Lab, Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA, 24061, United States
| | - Masoud Agah
- VT MEMS Lab, Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA, 24061, United States.
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Silane-Coating Strategy for Titanium Functionalization Does Not Impair Osteogenesis In Vivo. MATERIALS 2021; 14:ma14071814. [PMID: 33917610 PMCID: PMC8038793 DOI: 10.3390/ma14071814] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/23/2021] [Accepted: 03/29/2021] [Indexed: 11/16/2022]
Abstract
Silane-coating strategy has been used to bind biological compounds to the titanium surface, thereby making implant devices biologically active. However, it has not been determined if the presence of the silane coating itself is biocompatible to osseointegration. The aim of the present study was to evaluate if silane-coating affects bone formation on titanium using a rabbit model. For this, titanium screw implants (3.75 by 6 mm) were hydroxylated in a solution of H2SO4/30% H2O2 for 4 h before silane-coating with 3-aminopropyltriethoxysilane (APTES). A parallel set of titanium screws underwent only the hydroxylation process to present similar acid-etched topography as a control. The presence of the silane on the surface was checked by x-ray photoelectron spectroscopy (XPS), with scanning electron microscopy (SEM) and atomic force microscopy (AFM). A total of 40 titanium screws were implanted in the tibia of ten New Zealand rabbits in order to evaluate bone-to-implant contact (BIC) after 3 weeks and 6 weeks of healing. Silane-coated surface presented higher nitrogen content in the XPS analysis, while micro- and nano-topography of the surface remained unaffected. No difference between the groups was observed after 3 and 6 weeks of healing (p > 0.05, independent t-test), although an increase in BIC occurred over time. These results indicate that silanization of a titanium surface with APTES did not impair the bone formation, indicating that this can be a reliable tool to anchor osteogenic molecules on the surface of implant devices.
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New poly(urethane-urea) microcapsules from PVA modified with APTES: preparation, characterization and enzyme encapsulation. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-020-03189-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Yao C, Ahmed MH, De Grave L, Yoshihara K, Mercelis B, Okazaki Y, Van Landuyt KL, Huang C, Van Meerbeek B. Optimizing glass-ceramic bonding incorporating new silane technology in an experimental universal adhesive formulation. Dent Mater 2021; 37:894-904. [PMID: 33757655 DOI: 10.1016/j.dental.2021.02.021] [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: 11/09/2020] [Revised: 02/22/2021] [Accepted: 02/24/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Incorporating silane-coupling agent into universal adhesives (UAs) to simplify adhesive luting of glass-ceramic restorations appeared ineffective due to silane's instability in an acidic aqueous solution. This study aimed to evaluate new silane technology added to an experimental UA to be bonded to glass ceramics without separate prior silanization. METHODS Combined silane technology, consisting of 3-(aminopropyl)triethoxysilane (APTES) and γ-methacryloxypropyltriethoxysilane (γMPTES), was incorporated into an experimental UA formulation, being referred to as ADH-XTE (3M Oral Care). Immediate and aged shear bond strength (SBS) of ADH-XTE onto as-milled ('AM'), tribochemical silica-coated ('TSC'), HF-etched ('HF'), and mirror-polished ('MP') glass-ceramic CAD/CAM blocks (IPS e.max CAD) with/without separate silanization was measured (n = 10/group). The control adhesives included Scotchbond Universal ('SBU') and Scotchbond 1 XT ('SB1-XT'). The glass-ceramic surface topography and the fractography of the SBS-debonded specimens were observed by SEM. RESULTS Without separate prior silanization, the experimental UA ADH-XTE, containing combined APTES/γMPTES silane technology, significantly outperformed the glass-ceramic bonding efficiency of its silane-containing SBU precursor, while it performed equally effective as SBU applied with prior silanization. Upon aging, significant reduction in SBS was recorded when ADH-XTE was bonded to TSC glass-ceramic surfaces (p < 0.05), while not to HF ones. Notably, the lowest SBS was obtained when the UAs were bonded to AM and MP glass-ceramic surfaces, in particular when applied without separate prior silanization (p < 0.05). SIGNIFICANCE The glass-ceramic bonding capacity of the new combined APTES/γMPTES silane-containing UA ADH-XTE surpassed that of its SBU precursor. HF etching remains needed to durably bond to glass-ceramics.
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Affiliation(s)
- Chenmin Yao
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry, 3000 Leuven, Belgium; Wuhan University, The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education (KLOBM), School & Hospital of Stomatology, 430079 Wuhan, China
| | - Mohammed H Ahmed
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry, 3000 Leuven, Belgium; Tanta University, Faculty of Dentistry, Department of Dental Biomaterials, 31511 Tanta, Egypt
| | - Lauren De Grave
- KU Leuven (University of Leuven), Department of Chemistry, Polymer Chemistry and Materials, 3000 Leuven, Belgium
| | - Kumiko Yoshihara
- National Institute of Advanced Industrial Science and Technology (AIST), Health and Medical Research Institute, 761-0395 Takamatsu, Japan; Okayama University, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Department of Pathology & Experimental Medicine, 700-8556 Okayama, Japan
| | - Ben Mercelis
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry, 3000 Leuven, Belgium
| | - Yohei Okazaki
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry, 3000 Leuven, Belgium; Hiroshima University, Department of Advanced Prosthodontics, 734-8553 Hiroshima, Japan
| | - Kirsten L Van Landuyt
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry, 3000 Leuven, Belgium
| | - Cui Huang
- Wuhan University, The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education (KLOBM), School & Hospital of Stomatology, 430079 Wuhan, China
| | - Bart Van Meerbeek
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry, 3000 Leuven, Belgium.
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Chen P, Huang Y, Bo Y, Liang H, Xiao A, Guan BO. 3D nanointerface enhanced optical microfiber for real-time detection and sizing of single nanoparticles. CHEMICAL ENGINEERING JOURNAL (LAUSANNE, SWITZERLAND : 1996) 2021; 407:127143. [PMID: 33013189 PMCID: PMC7524536 DOI: 10.1016/j.cej.2020.127143] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 09/10/2020] [Accepted: 09/21/2020] [Indexed: 06/11/2023]
Abstract
Portable devices, which can detect and characterize the individual nanoparticles in real time, are of insignificant interest for early diagnosis, homeland security, semiconductor manufacturing and environmental monitoring. Optical microfibers present a good potential in this field, however, are restricted by the sensitivity limit. This study reports the development of a 3D plasmonic nanointerface, which is made of a Cu-BTC framework supporting Cu3-xP nanocrystals, enhancing the optical microfiber for real-time detection and sizing of single nanoparticles. The Cu3-xP nanocrystals are successfully embedded in the 3D Cu-BTC framework. The localized-surface plasmon resonance is tuned to coincide with the evanescent field of the optical microfiber. The 3D Cu-BTC framework, as the scaffold of nanocrystals, confines the local resonance field on the microfiber with three dimensions, at which the binding of target nanoparticles occurs. Based on the evanescent field confinement and surface enhancement by the nanointerface, the optical microfiber sensor overcomes its sensitivity limit, and enables the detection and sizing of the individual nanoparticles. The compact size and low optical power supply of the sensor confirm its suitability as a portable device for the real-time single-nanoparticle characterization, especially for the convenient evaluation of the ultrafine particles in the environment. This work opens up an approach to overcome the sensitivity limit of the optical microfibers, as long with stimulating the portable real-time single-nanoparticle detection and sizing.
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Affiliation(s)
- Pengwei Chen
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511143, China
| | - Yunyun Huang
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511143, China
| | - Ye Bo
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511143, China
| | - He Liang
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511143, China
| | - Aoxiang Xiao
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511143, China
| | - Bai-Ou Guan
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511143, China
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Zeeshan M, Dilshad MR, Islam A, Iqbal SS, Akram MS, Mehmood F, Gull N, Khan RU. Synergistic effect of silane cross-linker (APTEOS) on PVA/gelatin blend films for packaging applications. HIGH PERFORM POLYM 2021. [DOI: 10.1177/0954008321994659] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The objective of this work is to fabricate hydrogel films which are biodegradable and also fit for packaging applications. The hydrogel films were prepared by the reaction of polyvinyl alcohol and gelatin with and without 3-aminopropyltriethoxysilane (APTEOS) cross-linker. The hydrogel films were then characterized by FTIR spectroscopy, degree of swelling, TGA, SEM analysis and mechanical testing. The FTIR spectra of the hydrogel films confirmed the presence of both polymers and hydrogen bonding between them. TGA analysis confirmed the increase in thermal stability with the increase of cross-linker amount. SEM analysis confirmed the increase in uniformity of structure with the increase of cross-linker amount. The increase in cross-linker amount resulted in decrease of degree of swelling and increase of tensile strength. The biodegradability of hydrogel films was evaluated by performing soil burial test and found to be decreased with the increase of cross-linker amount. In order to balance the tensile strength and biodegradability, the optimum amount of cross-linker was determined which resulted in the formation of the best performing film. Finally, our best performing film was compared with other hydrogel films reported in the literature. Hence, the hydrogel films cross-linked with APTEOS are biodegradable, having high tensile strength and suitable for packaging purpose.
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Affiliation(s)
- Muhammad Zeeshan
- Department of Polymer Engineering and Technology, University of the Punjab, Lahore, Pakistan
| | - Muhammad Rizwan Dilshad
- Department of Polymer Engineering and Technology, University of the Punjab, Lahore, Pakistan
- Institute of Chemical Engineering and Technology, University of the Punjab, Lahore, Pakistan
| | - Atif Islam
- Department of Polymer Engineering and Technology, University of the Punjab, Lahore, Pakistan
| | | | - Muhammad Sarfraz Akram
- Institute of Energy and Environmental Engineering, University of the Punjab, Lahore, Pakistan
| | - Farhan Mehmood
- Department of Polymer Engineering and Technology, University of the Punjab, Lahore, Pakistan
| | - Nafisa Gull
- Department of Polymer Engineering and Technology, University of the Punjab, Lahore, Pakistan
| | - Rafi Ullah Khan
- Department of Polymer Engineering and Technology, University of the Punjab, Lahore, Pakistan
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Laborie E, Bayle F, Bouville D, Smadja C, Dufour-Gergam E, Ammar M. Surface Biochemical Modification of Poly(dimethylsiloxane) for Specific Immune Cytokine Response. ACS APPLIED BIO MATERIALS 2021; 4:1307-1318. [DOI: 10.1021/acsabm.0c01188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Etienne Laborie
- Center for Nanosciences and Nanotechnologies, CNRS, Université Paris-Sud, Université Paris-Saclay, 10 Boulevard Thomas Gobert, 91120 Palaiseau, France
- Institut Galien Paris Sud, UMR 8612, Protein and Nanotechnology in Analytical Science (PNAS), CNRS, Université Paris-Sud, Université Paris-Saclay, 5 rue Jean Baptiste Clément, 92290 Châtenay-Malabry, France
| | - Fabien Bayle
- Center for Nanosciences and Nanotechnologies, CNRS, Université Paris-Sud, Université Paris-Saclay, 10 Boulevard Thomas Gobert, 91120 Palaiseau, France
| | - David Bouville
- Center for Nanosciences and Nanotechnologies, CNRS, Université Paris-Sud, Université Paris-Saclay, 10 Boulevard Thomas Gobert, 91120 Palaiseau, France
| | - Claire Smadja
- Institut Galien Paris Sud, UMR 8612, Protein and Nanotechnology in Analytical Science (PNAS), CNRS, Université Paris-Sud, Université Paris-Saclay, 5 rue Jean Baptiste Clément, 92290 Châtenay-Malabry, France
| | - Elisabeth Dufour-Gergam
- Center for Nanosciences and Nanotechnologies, CNRS, Université Paris-Sud, Université Paris-Saclay, 10 Boulevard Thomas Gobert, 91120 Palaiseau, France
| | - Mehdi Ammar
- Center for Nanosciences and Nanotechnologies, CNRS, Université Paris-Sud, Université Paris-Saclay, 10 Boulevard Thomas Gobert, 91120 Palaiseau, France
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