701
|
Yang Y, Westerhoff P. Presence in, and Release of, Nanomaterials from Consumer Products. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 811:1-17. [DOI: 10.1007/978-94-017-8739-0_1] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
|
702
|
de Faria AF, de Moraes ACM, Alves OL. Toxicity of Nanomaterials to Microorganisms: Mechanisms, Methods, and New Perspectives. Nanotoxicology 2014. [DOI: 10.1007/978-1-4614-8993-1_17] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
703
|
A combination of TiO2–UV photocatalysis and high hydrostatic pressure to inactivate Bacillus cereus in freshly squeezed Angelica keiskei juice. Lebensm Wiss Technol 2014. [DOI: 10.1016/j.lwt.2013.08.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
704
|
Bott J, Störmer A, Franz R. A Comprehensive Study into the Migration Potential of Nano Silver Particles from Food Contact Polyolefins. ACS SYMPOSIUM SERIES 2014. [DOI: 10.1021/bk-2014-1159.ch005] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Affiliation(s)
- J. Bott
- Fraunhofer Institute for Process Engineering and Packaging IVV, Giggenhauser Straße 35, 85354 Freising, Germany
| | - A. Störmer
- Fraunhofer Institute for Process Engineering and Packaging IVV, Giggenhauser Straße 35, 85354 Freising, Germany
| | - R. Franz
- Fraunhofer Institute for Process Engineering and Packaging IVV, Giggenhauser Straße 35, 85354 Freising, Germany
| |
Collapse
|
705
|
Pradittham A, Charitngam N, Puttajan S, Atong D, Pechyen C. Surface Modified CaCO3 by Palmitic Acid as Nucleating Agents for Polypropylene Film: Mechanical, Thermal and Physical Properties. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.egypro.2014.07.157] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
706
|
Uysal Unalan I, Cerri G, Marcuzzo E, Cozzolino CA, Farris S. Nanocomposite films and coatings using inorganic nanobuilding blocks (NBB): current applications and future opportunities in the food packaging sector. RSC Adv 2014. [DOI: 10.1039/c4ra01778a] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
|
707
|
Heo JH, Cho HH, Lee JW, Lee JH. Achromatic–chromatic colorimetric sensors for on–off type detection of analytes. Analyst 2014; 139:6486-93. [DOI: 10.1039/c4an01645a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We developed a method to convert a general colorimetric sensor to an achromatic colorimetric sensor by introducing a complementary colored dye to the sensor, helping users to detect the presence of analytes at much lower concentration and recognize the existence of analytes instinctively.
Collapse
Affiliation(s)
- Jun Hyuk Heo
- School of Advanced Materials Science and Engineering
- Sungkyunkwan University (SKKU)
- Suwon 440-476, Republic of Korea
| | - Hui Hun Cho
- SKKU Advanced Institute of Nanotechnology (SAINT)
- Sungkyunkwan University (SKKU)
- Suwon 440-476, Republic of Korea
| | - Jin Woong Lee
- School of Advanced Materials Science and Engineering
- Sungkyunkwan University (SKKU)
- Suwon 440-476, Republic of Korea
| | - Jung Heon Lee
- School of Advanced Materials Science and Engineering
- Sungkyunkwan University (SKKU)
- Suwon 440-476, Republic of Korea
- SKKU Advanced Institute of Nanotechnology (SAINT)
- Sungkyunkwan University (SKKU)
| |
Collapse
|
708
|
Haraguchi K, Takada T. Polymer-Clay Nanocomposite Microspheres and their Thermosensitive Characteristics. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201300593] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kazutoshi Haraguchi
- Material Chemistry Laboratory, Kawamura Institute of Chemical Research; 631 Sakado, Sakura Chiba 285-0078 Japan
| | - Tetsuo Takada
- Material Chemistry Laboratory, Kawamura Institute of Chemical Research; 631 Sakado, Sakura Chiba 285-0078 Japan
| |
Collapse
|
709
|
Kim D, Kim I, Seo J, Han H. Water Sorption Behaviors of Poly(Propylene Carbonate)/Exfoliated Graphite Nanocomposite Films. APPLIED CHEMISTRY FOR ENGINEERING 2013. [DOI: 10.14478/ace.2013.1082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
710
|
Bioactivity, mechanism of action, and cytotoxicity of copper-based nanoparticles: A review. Appl Microbiol Biotechnol 2013; 98:1001-9. [DOI: 10.1007/s00253-013-5422-8] [Citation(s) in RCA: 303] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 11/15/2013] [Accepted: 11/18/2013] [Indexed: 11/30/2022]
|
711
|
Yining X, Rubino M, Auras R. Detection and quantification of montmorillonite nanoclay in water-ethanol solutions by graphite furnace atomic absorption spectrometry. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2013; 30:2177-83. [DOI: 10.1080/19440049.2013.845800] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
712
|
Preparation and characterization of agar/silver nanoparticles composite films with antimicrobial activity. Food Hydrocoll 2013. [DOI: 10.1016/j.foodhyd.2013.04.002] [Citation(s) in RCA: 231] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
713
|
Size and mass determination of silver nanoparticles in an aqueous matrix using asymmetric flow field flow fractionation coupled to inductively coupled plasma mass spectrometer and ultraviolet–visible detectors. J Chromatogr A 2013; 1321:100-8. [DOI: 10.1016/j.chroma.2013.10.060] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 10/10/2013] [Accepted: 10/20/2013] [Indexed: 01/24/2023]
|
714
|
|
715
|
|
716
|
|
717
|
Antimicrobial and physical-mechanical properties of agar-based films incorporated with grapefruit seed extract. Carbohydr Polym 2013; 102:708-16. [PMID: 24507339 DOI: 10.1016/j.carbpol.2013.10.099] [Citation(s) in RCA: 147] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 10/30/2013] [Accepted: 10/31/2013] [Indexed: 11/23/2022]
Abstract
The use of synthetic petroleum based packaging films caused serious environmental problems due to their difficulty in recycling and poor biodegradability. Therefore, present study was aimed to develop natural biopolymer-based antimicrobial packaging films as an alternative for the synthetic packaging films. As a natural antimicrobial agent, grapefruit seed extract (GSE) has been incorporated into agar to prepare antimicrobial packaging film. The films with different concentrations of GSE were prepared by a solvent casting method and the resulting composite films were examined physically and mechanically. In addition, the films were characterized by FE-SEM, XRD, FT-IR and TGA. The incorporation of GSE caused increase in color, UV barrier, moisture content, water solubility and water vapor permeability, while decrease in surface hydrophobicity, tensile strength and elastic modulus of the films. As the concentration of GSE increased from 0.6 to 13.3 μg/mL, the physical and mechanical properties of the films were affected significantly. The addition of GSE changed film microstructure of the film, but did not influence the crystallinity of agar and thermal stability of the agar-based films. The agar/GSE films exhibited distinctive antimicrobial activity against three test food pathogens, such as Listeria monocytogenes, Bacillus cereus and Escherichia coli. These results suggest that agar/GSE films have potential to be used in an active food packaging systems for maintaining food safety and extending the shelf-life of the packaged food.
Collapse
|
718
|
Coles D, Frewer L. Nanotechnology applied to European food production – A review of ethical and regulatory issues. Trends Food Sci Technol 2013. [DOI: 10.1016/j.tifs.2013.08.006] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
719
|
Fresh fruits and vegetables—An overview on applied methodologies to improve its quality and safety. INNOV FOOD SCI EMERG 2013. [DOI: 10.1016/j.ifset.2013.07.002] [Citation(s) in RCA: 321] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
720
|
|
721
|
Kanmani P, Lim ST. Synthesis and characterization of pullulan-mediated silver nanoparticles and its antimicrobial activities. Carbohydr Polym 2013; 97:421-8. [DOI: 10.1016/j.carbpol.2013.04.048] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Revised: 04/11/2013] [Accepted: 04/12/2013] [Indexed: 12/17/2022]
|
722
|
Tauran Y, Brioude A, Coleman AW, Rhimi M, Kim B. Molecular recognition by gold, silver and copper nanoparticles. World J Biol Chem 2013; 4:35-63. [PMID: 23977421 PMCID: PMC3746278 DOI: 10.4331/wjbc.v4.i3.35] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 06/11/2013] [Accepted: 06/18/2013] [Indexed: 02/05/2023] Open
Abstract
The intrinsic physical properties of the noble metal nanoparticles, which are highly sensitive to the nature of their local molecular environment, make such systems ideal for the detection of molecular recognition events. The current review describes the state of the art concerning molecular recognition of Noble metal nanoparticles. In the first part the preparation of such nanoparticles is discussed along with methods of capping and stabilization. A brief discussion of the three common methods of functionalization: Electrostatic adsorption; Chemisorption; Affinity-based coordination is given. In the second section a discussion of the optical and electrical properties of nanoparticles is given to aid the reader in understanding the use of such properties in molecular recognition. In the main section the various types of capping agents for molecular recognition; nucleic acid coatings, protein coatings and molecules from the family of supramolecular chemistry are described along with their numerous applications. Emphasis for the nucleic acids is on complementary oligonucleotide and aptamer recognition. For the proteins the recognition properties of antibodies form the core of the section. With respect to the supramolecular systems the cyclodextrins, calix[n]arenes, dendrimers, crown ethers and the cucurbitales are treated in depth. Finally a short section deals with the possible toxicity of the nanoparticles, a concern in public health.
Collapse
|
723
|
Influence of PA6 nanocomposite films on the stability of vacuum-aged beef loins during storage in modified atmospheres. Meat Sci 2013; 96:574-80. [PMID: 24013698 DOI: 10.1016/j.meatsci.2013.07.020] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 07/03/2013] [Accepted: 07/16/2013] [Indexed: 01/01/2023]
Abstract
A masterbatch of polyamide 6 (PA6) containing dispersed nanoclays, was used to fabricate a novel multilayer film for vacuum packed meat. Performance of the nanocomposite was compared to a control PA6 multilayer and a high barrier commercial film. Addition of nanoclays improved oxygen barrier properties, UV-blocking capability and stiffness. Beef loins were vacuum-aged using the three films for 0 7, 14 and 21 days at 2°C. After each ageing time, beef steaks were packaged in commercial trays and high oxygen atmosphere and stored at 4°C for 9 days. Beef quality parameters and gas content were studied during display time in MAP (1, 3, 6 and 9 d). Beef quality parameters were not influenced by the packaging materials used during ageing and the performance of nanocomposites was comparable to high barrier films. Ageing had a positive impact on the stabilization of redness up to day 6 in MAP. Thereafter, oxymyoglobin content and oxidation levels were negatively influenced by ageing.
Collapse
|
724
|
Lacatusu I, Mitrea E, Badea N, Stan R, Oprea O, Meghea A. Lipid nanoparticles based on omega-3 fatty acids as effective carriers for lutein delivery. Preparation and in vitro characterization studies. J Funct Foods 2013. [DOI: 10.1016/j.jff.2013.04.010] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
|
725
|
Kanmani P, Lim ST. Synthesis and structural characterization of silver nanoparticles using bacterial exopolysaccharide and its antimicrobial activity against food and multidrug resistant pathogens. Process Biochem 2013. [DOI: 10.1016/j.procbio.2013.05.011] [Citation(s) in RCA: 137] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
726
|
Molinaro S, Cruz Romero M, Boaro M, Sensidoni A, Lagazio C, Morris M, Kerry J. Effect of nanoclay-type and PLA optical purity on the characteristics of PLA-based nanocomposite films. J FOOD ENG 2013. [DOI: 10.1016/j.jfoodeng.2013.01.021] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
727
|
Komatsu D, Paranhos CM, Venâncio T, Ruvolo-Filho A. Change in the Properties of Linear Low-Density Polyethylene (LLDPE)/Montmorillonite Clay Nanocomposites after a Fuel-Aging Process. Ind Eng Chem Res 2013. [DOI: 10.1021/ie303112w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel Komatsu
- Department
of Chemistry and ‡Department of Materials Engineering, Federal University of São Carlos, Rodovia Washington
Luís, km 235 - SP-310, São Carlos, São Paulo,
Brazil
| | - Caio Márcio Paranhos
- Department
of Chemistry and ‡Department of Materials Engineering, Federal University of São Carlos, Rodovia Washington
Luís, km 235 - SP-310, São Carlos, São Paulo,
Brazil
| | - Tiago Venâncio
- Department
of Chemistry and ‡Department of Materials Engineering, Federal University of São Carlos, Rodovia Washington
Luís, km 235 - SP-310, São Carlos, São Paulo,
Brazil
| | - Adhemar Ruvolo-Filho
- Department
of Chemistry and ‡Department of Materials Engineering, Federal University of São Carlos, Rodovia Washington
Luís, km 235 - SP-310, São Carlos, São Paulo,
Brazil
| |
Collapse
|
728
|
Jin S, Zhou N, Xu D, Shen J. Synthesis and characterization of poly(2-methacryloyloxyethyl phosphorylcholine) onto graphene oxide. POLYM ADVAN TECHNOL 2013. [DOI: 10.1002/pat.3148] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Suxing Jin
- Jiangsu Key Laboratory of Biofunctional Materials; College of Chemistry and Materials Science, Nanjing Normal University; Nanjing 210023 China
- Jiangsu Engineering Research Center for Biomedical Function Materials; Nanjing Normal University; Nanjing 210023 China
| | - Ninglin Zhou
- Jiangsu Key Laboratory of Biofunctional Materials; College of Chemistry and Materials Science, Nanjing Normal University; Nanjing 210023 China
- Jiangsu Engineering Research Center for Biomedical Function Materials; Nanjing Normal University; Nanjing 210023 China
- Jiangsu Technological Research Center for Interfacial Chemistry Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Dong Xu
- Jiangsu Key Laboratory of Biofunctional Materials; College of Chemistry and Materials Science, Nanjing Normal University; Nanjing 210023 China
- Jiangsu Engineering Research Center for Biomedical Function Materials; Nanjing Normal University; Nanjing 210023 China
| | - Jian Shen
- Jiangsu Key Laboratory of Biofunctional Materials; College of Chemistry and Materials Science, Nanjing Normal University; Nanjing 210023 China
- Jiangsu Engineering Research Center for Biomedical Function Materials; Nanjing Normal University; Nanjing 210023 China
- Jiangsu Technological Research Center for Interfacial Chemistry Chemical Engineering; Nanjing University; Nanjing 210023 China
| |
Collapse
|
729
|
Applications of Surface Modified Ionic Liquid/Nanomaterial Composite in Electrochemical Sensors and Biosensors. BIONANOSCIENCE 2013. [DOI: 10.1007/s12668-013-0094-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
730
|
Vukovic I, Brinke GT, Loos K. Block copolymer template-directed synthesis of well-ordered metallic nanostructures. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.03.013] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
731
|
Preparation, characterization and antimicrobial efficiency of Ag/PDDA-diatomite nanocomposite. Colloids Surf B Biointerfaces 2013; 110:191-8. [PMID: 23732794 DOI: 10.1016/j.colsurfb.2013.04.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Revised: 03/27/2013] [Accepted: 04/16/2013] [Indexed: 11/24/2022]
Abstract
Nanocomposites consisting of diatomaceous earth particles and silver nanoparticles (silver NPs) with high antimicrobial activity were prepared and characterized. For the purpose of nanocomposite preparation, silver NPs with an average size of 28nm prepared by modified Tollens process were used. Nanocomposites were prepared using poly(diallyldimethylammonium) chloride (PDDA) as an interlayer substance between diatomite and silver NPs which enables to change diatomite original negative surface charge to positive one. Due to strong electrostatic interactions between negatively charged silver NPs and positively charged PDDA-modified diatomite, Ag/PDDA-diatomite nanocomposites with a high content of silver (as high as 46.6mgAg/1g of diatomite) were prepared. Because of minimal release of silver NPs from prepared nanocomposites to aqueous media (<0.3mg Ag/1g of nanocomposite), the developed nanocomposites are regarded as a potential useful antimicrobial material with a long-term efficiency showing no risk to human health or environment. All the prepared nanocomposites exhibit a high bactericidal activity against Gram-negative and Gram-positive bacteria and fungicidal activity against yeasts at very low concentrations as low as 0.11g/L, corresponding to silver concentration of 5mg/L. Hence, the prepared nanocomposites constitute a promising candidate suitable for the microbial water treatment in environmental applications.
Collapse
|
732
|
Cappeletti LB, Moncada E, Poisson J, Butler IS, Dos Santos JHZ. Determination of the network structure of sensor materials prepared by three different sol-gel routes using Fourier transform infrared spectroscopy (FT-IR). APPLIED SPECTROSCOPY 2013; 67:441-447. [PMID: 23601544 DOI: 10.1366/12-06748] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Solid acid-base sensor materials were prepared by encapsulating three pH indicators (alizarin red, brilliant yellow, and acridine) within a silica matrix using a sol-gel approach through three different routes: (1) non-hydrolytic, (2) acid-catalyzed, and (3) base-catalyzed. Raman and Fourier transform infrared spectroscopies were used to evaluate the silica-indicator interactions. Because vibrational bands assigned to functional groups present in the indicator molecules were not detected, the main silica stretching mode νSi-O between approximately 1300 and 1000 cm(-1) was used to detect the presence of our indicators within the silica matrix. The large band centered at 1100 cm(-1) was deconvoluted into four components corresponding to the longitudinal optic and transversal optic modes of the silicon monoxide (SiO)4 and (SiO)6 siloxane rings. Using the component area of each mode, it was possible to calculate the percentage of each structure. Such percentages ranged from 49% to 70% (SiO)6 for the analyzed samples, within a confidence level of 95% (p = 0.05). (The confidence limits were 53-62%.) These results could be related to the pH indicator content, indicating that the quantity of the encapsulated molecule affects the (SiO)6 percentage values. In addition, a comparison with the radius of gyration obtained by small angle X-ray scattering was done. These results indicate that the analyte accesses the receptor elements through the passages between the siloxane rings but not through the siloxane rings themselves.
Collapse
|
733
|
Enhanced moisture barrier films based on EVOH/exfoliated graphite (EGn) nanocomposite films by solution blending. Macromol Res 2013. [DOI: 10.1007/s13233-013-1124-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
734
|
Elzey S, Tsai DH, Yu LL, Winchester MR, Kelley ME, Hackley VA. Real-time size discrimination and elemental analysis of gold nanoparticles using ES-DMA coupled to ICP-MS. Anal Bioanal Chem 2013; 405:2279-88. [PMID: 23338753 DOI: 10.1007/s00216-012-6617-z] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Revised: 11/19/2012] [Accepted: 11/28/2012] [Indexed: 01/25/2023]
Abstract
We report the development of a hyphenated instrument with the capacity to quantitatively characterize aqueous suspended gold nanoparticles (AuNPs) based on a combination of gas-phase size separation, particle counting, and elemental analysis. A customized electrospray-differential mobility analyzer (ES-DMA) was used to achieve real-time upstream size discrimination. A condensation particle counter and inductively coupled plasma mass spectrometer (ICP-MS) were employed as downstream detectors, providing information on number density and elemental composition, respectively, of aerosolized AuNPs versus the upstream size selected by ES-DMA. A gas-exchange device was designed and optimized to improve the conversion of air flow (from the electrospray) to argon flow required to sustain the ICP-MS plasma, the key compatibility issue for instrumental hyphenation. Our work provides the proof of concept and a working prototype for utilizing this construct to successfully measure (1) number- and mass-based distributions; (2) elemental compositions of nanoparticles classified by size, where the size classification and elemental analysis are performed within a single experiment; (3) particle concentrations in both solution (before size discrimination) and aerosol (after size discrimination) phases; and (4) the number of atoms per nanoparticle or the nanoparticle density.
Collapse
Affiliation(s)
- Sherrie Elzey
- Materials Measurement Science Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
| | | | | | | | | | | |
Collapse
|
735
|
Feldman D. Polymer Nanocomposite Barriers. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2013. [DOI: 10.1080/10601325.2013.768440] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
736
|
Nano-scale temperature dependent visco-elastic properties of polyethylene terephthalate (PET) using atomic force microscope (AFM). Micron 2013; 44:174-8. [DOI: 10.1016/j.micron.2012.06.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Revised: 06/06/2012] [Accepted: 06/06/2012] [Indexed: 11/23/2022]
|
737
|
Christoforidis KC, Kubacka A, Ferrer M, Cerrada ML, Fernández-García M, Fernández-García M. Role of TiO2 morphological characteristics in EVOH–TiO2 nanocomposite films: self-degradation and self-cleaning properties. RSC Adv 2013. [DOI: 10.1039/c3ra23271a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
738
|
Preparation and Characterization of Some Hyperbranched Polyesteramides/Montmorillonite Nanocomposites. INT J POLYM SCI 2013. [DOI: 10.1155/2013/528468] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Different polyesteramides hyperbranched polymers (HPEA1-6)/montomorillonite clay (MMT) nanocomposites were prepared with three different loading contents of clay (4, 10, and 15 wt%). The obtained nanocomposites were characterized via XRD, thermal analyses, and TEM. Generally, intercalation behavior was observed. The hyperbranched polyesteramides (HPEA1-6) were originally prepared by the bulky reaction between maleic anhydride (MAn), succinic anhydride (ScAn), and phthalic anhydride (PhAn) with either diethanolamine (DEA) or diisopropanolamine (DiPA). The resulting hyperbranched polyesteramides (HPEA1-6) were characterized by GPC, IR,1H-NMR, TGA, and DSC.
Collapse
|
739
|
Valentini F, Carbone M, Palleschi G. Graphene oxide nanoribbons (GNO), reduced graphene nanoribbons (GNR), and multi-layers of oxidized graphene functionalized with ionic liquids (GO–IL) for assembly of miniaturized electrochemical devices. Anal Bioanal Chem 2012; 405:3449-74. [DOI: 10.1007/s00216-012-6615-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 11/27/2012] [Accepted: 11/28/2012] [Indexed: 11/24/2022]
|
740
|
Chernousova S, Epple M. Silber als antibakterielles Agens: Ion, Nanopartikel, Metall. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201205923] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
741
|
Chernousova S, Epple M. Silver as antibacterial agent: ion, nanoparticle, and metal. Angew Chem Int Ed Engl 2012; 52:1636-53. [PMID: 23255416 DOI: 10.1002/anie.201205923] [Citation(s) in RCA: 1292] [Impact Index Per Article: 107.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 08/22/2012] [Indexed: 12/12/2022]
Abstract
The antibacterial action of silver is utilized in numerous consumer products and medical devices. Metallic silver, silver salts, and also silver nanoparticles are used for this purpose. The state of research on the effect of silver on bacteria, cells, and higher organisms is summarized. It can be concluded that the therapeutic window for silver is narrower than often assumed. However, the risks for humans and the environment are probably limited.
Collapse
Affiliation(s)
- Svitlana Chernousova
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, Universitätsstrasse 5-7, 45117 Essen, Germany
| | | |
Collapse
|
742
|
Durán N, Marcato PD. Nanobiotechnology perspectives. Role of nanotechnology in the food industry: a review. Int J Food Sci Technol 2012. [DOI: 10.1111/ijfs.12027] [Citation(s) in RCA: 144] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
743
|
|
744
|
Enhancement of antidandruff activity of shampoo by biosynthesized silver nanoparticles from Solanum trilobatum plant leaf. APPLIED NANOSCIENCE 2012. [DOI: 10.1007/s13204-012-0164-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
745
|
Schacht V, Neumann L, Sandhi S, Chen L, Henning T, Klar P, Theophel K, Schnell S, Bunge M. Effects of silver nanoparticles on microbial growth dynamics. J Appl Microbiol 2012; 114:25-35. [DOI: 10.1111/jam.12000] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 08/02/2012] [Accepted: 08/22/2012] [Indexed: 01/25/2023]
Affiliation(s)
- V.J. Schacht
- Institute of Applied Microbiology, Justus Liebig University of Giessen; Giessen Germany
- The University of Queensland; National Research Centre for Environmental Toxicology (Entox); 39 Kessels Road Coopers Plains QLD 4108 Australia
| | - L.V. Neumann
- Institute of Applied Microbiology, Justus Liebig University of Giessen; Giessen Germany
| | - S.K. Sandhi
- Institute of Applied Microbiology, Justus Liebig University of Giessen; Giessen Germany
| | - L. Chen
- Institute of Experimental Physics I, Justus Liebig University of Giessen; Giessen Germany
| | - T. Henning
- Institute of Experimental Physics I, Justus Liebig University of Giessen; Giessen Germany
| | - P.J. Klar
- Institute of Experimental Physics I, Justus Liebig University of Giessen; Giessen Germany
| | - K. Theophel
- Institute of Applied Microbiology, Justus Liebig University of Giessen; Giessen Germany
| | - S. Schnell
- Institute of Applied Microbiology, Justus Liebig University of Giessen; Giessen Germany
| | - M. Bunge
- Institute of Applied Microbiology, Justus Liebig University of Giessen; Giessen Germany
| |
Collapse
|
746
|
Priolo MA, Holder KM, Greenlee SM, Grunlan JC. Transparency, gas barrier, and moisture resistance of large-aspect-ratio vermiculite nanobrick wall thin films. ACS APPLIED MATERIALS & INTERFACES 2012; 4:5529-5533. [PMID: 23013618 DOI: 10.1021/am3014289] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The ability to incorporate large-aspect-ratio vermiculite (VMT) clay into thin films fabricated using the layer-by-layer assembly techinique is reported for the first time. Thin films of branched polyethylenimine (PEI) and VMT were analyzed for their growth rate, clay composition, transparency, and gas barrier behavior. These films consist of >96 wt% clay, are >95% transparent, and, because of their nanobrick wall structure, exhibit super gas barrier behavior at thicknesses of <165 nm. When coupled with flexibility, the optical clarity and super barrier that these coatings can impart make them superb candidates for a variety of packaging applications.
Collapse
Affiliation(s)
- Morgan A Priolo
- Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843-3123, USA.
| | | | | | | |
Collapse
|
747
|
Santos CM, Mangadlao J, Ahmed F, Leon A, Advincula RC, Rodrigues DF. Graphene nanocomposite for biomedical applications: fabrication, antimicrobial and cytotoxic investigations. NANOTECHNOLOGY 2012; 23:395101. [PMID: 22962260 DOI: 10.1088/0957-4484/23/39/395101] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Materials possessing excellent bacterial toxicity, while presenting low cytotoxicity to human cells, are strong candidates for biomaterials applications. In this study, we present the fabrication of a nanocomposite containing poly(N-vinylcarbazole) (PVK) and graphene (G) in solutions and thin films. Highly dispersed PVK-G (97-3 w/w%) solutions in various organic and aqueous solvents were prepared by solution mixing and sonication methods. The thermal properties and morphology of the new composite were analyzed using thermal gravimetry analysis (TGA) and atomic force microscopy (AFM), respectively. PVK-G films were immobilized onto indium tin oxide (ITO) substrates via electrodeposition. AFM was used to characterize the resulting topography of the nanocomposite thin films, while cyclic voltammetry and UV-vis were used to monitor their successful electrodeposition. The antimicrobial properties of the electrodeposited PVK-G films and solution-based PVK-G were investigated against Escherichia coli (E. coli) and Bacillus subtilis (B. subtilis). Microbial growth after exposure to the nanocomposite, metabolic assay and live-dead assay of the bacterial solutions exposed to PVK-G presented fewer viable and active bacteria than those exposed to pure PVK or pure graphene solutions. The PVK-G film inhibited about 80% of biofilm surface coverage whereas the PVK- and G-modified surfaces allowed biofilm formation over almost the whole coated surface (i.e. > 80%). The biocompatibility of the prepared PVK-G solutions on NIH 3T3 cells was evaluated using the MTS cell proliferation assay. A 24 h exposure of the PVK-G nanocomposite to the NIH 3T3 cells presented ~80% cell survival.
Collapse
Affiliation(s)
- Catherine M Santos
- Department of Civil and Department of Environmental Engineering, University of Houston, Houston, TX 77204-5003, USA
| | | | | | | | | | | |
Collapse
|
748
|
Nanotechnology-Based Biosensors and Diagnostics: Technology Push versus Industrial/Healthcare Requirements. BIONANOSCIENCE 2012. [DOI: 10.1007/s12668-012-0047-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
749
|
Swanson C, Stimpfling T, Troutier-Thulliez AL, Hintze-Bruening H, Leroux F. Layered double hydroxide platelets exfoliation into a water-based polyester. J Appl Polym Sci 2012. [DOI: 10.1002/app.38483] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
750
|
Hong SI, Rhim JW. Preparation and properties of melt-intercalated linear low density polyethylene/clay nanocomposite films prepared by blow extrusion. Lebensm Wiss Technol 2012. [DOI: 10.1016/j.lwt.2012.03.009] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|