51
|
Baer DR, Engelhard MH, Johnson GE, Laskin J, Lai J, Mueller K, Munusamy P, Thevuthasan S, Wang H, Washton N, Elder A, Baisch BL, Karakoti A, Kuchibhatla SVNT, Moon D. Surface characterization of nanomaterials and nanoparticles: Important needs and challenging opportunities. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY. A, VACUUM, SURFACES, AND FILMS : AN OFFICIAL JOURNAL OF THE AMERICAN VACUUM SOCIETY 2013; 31:50820. [PMID: 24482557 PMCID: PMC3869349 DOI: 10.1116/1.4818423] [Citation(s) in RCA: 106] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2013] [Accepted: 07/25/2013] [Indexed: 05/17/2023]
Abstract
This review examines characterization challenges inherently associated with understanding nanomaterials and the roles surface and interface characterization methods can play in meeting some of the challenges. In parts of the research community, there is growing recognition that studies and published reports on the properties and behaviors of nanomaterials often have reported inadequate or incomplete characterization. As a consequence, the true value of the data in these reports is, at best, uncertain. With the increasing importance of nanomaterials in fundamental research and technological applications, it is desirable that researchers from the wide variety of disciplines involved recognize the nature of these often unexpected challenges associated with reproducible synthesis and characterization of nanomaterials, including the difficulties of maintaining desired materials properties during handling and processing due to their dynamic nature. It is equally valuable for researchers to understand how characterization approaches (surface and otherwise) can help to minimize synthesis surprises and to determine how (and how quickly) materials and properties change in different environments. Appropriate application of traditional surface sensitive analysis methods (including x-ray photoelectron and Auger electron spectroscopies, scanning probe microscopy, and secondary ion mass spectroscopy) can provide information that helps address several of the analysis needs. In many circumstances, extensions of traditional data analysis can provide considerably more information than normally obtained from the data collected. Less common or evolving methods with surface selectivity (e.g., some variations of nuclear magnetic resonance, sum frequency generation, and low and medium energy ion scattering) can provide information about surfaces or interfaces in working environments (operando or in situ) or information not provided by more traditional methods. Although these methods may require instrumentation or expertise not generally available, they can be particularly useful in addressing specific questions, and examples of their use in nanomaterial research are presented.
Collapse
Affiliation(s)
- Donald R Baer
- Pacific Northwest National Laboratory, EMSL, P.O. Box 999, Richland, Washington 99352
| | - Mark H Engelhard
- Pacific Northwest National Laboratory, EMSL, P.O. Box 999, Richland, Washington 99352
| | - Grant E Johnson
- Pacific Northwest National Laboratory, EMSL, P.O. Box 999, Richland, Washington 99352
| | - Julia Laskin
- Pacific Northwest National Laboratory, EMSL, P.O. Box 999, Richland, Washington 99352
| | - Jinfeng Lai
- Pacific Northwest National Laboratory, EMSL, P.O. Box 999, Richland, Washington 99352
| | - Karl Mueller
- Pacific Northwest National Laboratory, EMSL, P.O. Box 999, Richland, Washington 99352
| | - Prabhakaran Munusamy
- Pacific Northwest National Laboratory, EMSL, P.O. Box 999, Richland, Washington 99352
| | | | - Hongfei Wang
- Pacific Northwest National Laboratory, EMSL, P.O. Box 999, Richland, Washington 99352
| | - Nancy Washton
- Pacific Northwest National Laboratory, EMSL, P.O. Box 999, Richland, Washington 99352
| | - Alison Elder
- Department of Environmental Medicine, University of Rochester, Rochester, New York
| | - Brittany L Baisch
- Department of Environmental Medicine, University of Rochester, Rochester, New York
| | - Ajay Karakoti
- Battelle Science and Technology India, Pune, Maharashtra, India
| | | | - Daewon Moon
- Daegu Gyeongbuk Institute of Science and Technology, Daeju, Korea
| |
Collapse
|
52
|
El Habnouni S, Lavigne JP, Darcos V, Porsio B, Garric X, Coudane J, Nottelet B. Toward potent antibiofilm degradable medical devices: a generic method for the antibacterial surface modification of polylactide. Acta Biomater 2013; 9:7709-18. [PMID: 23603533 DOI: 10.1016/j.actbio.2013.04.018] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 04/03/2013] [Accepted: 04/09/2013] [Indexed: 12/15/2022]
Abstract
The effects of biomaterials on their environment must be carefully modulated in most biomedical applications. Among other approaches, this modulation can be obtained through the modification of the biomaterial surface. This paper proposes a simple and versatile strategy to produce non-leaching antibacterial polylactide (PLA) surfaces without any degradation of the polyester chains. The method is based on a one-pot procedure that provides a "clickable" PLA surface via anionic activation which is then functionalized with an antibacterial quaternized poly(2-(dimethylamino)ethyl methacrylate) (QPDMAEMA) by covalent immobilization on the surface. The anti-adherence and antibiofilm activities of modified PLA surfaces are assessed for different QPDMAEMA molecular weights and different quaternization agents. Antibacterial PLA surfaces are shown to be very active against Gram-negative and Gram-positive strains, with adherence reduction factors superior to 99.999% and a marked reduction in biofilm on the most potent surfaces. In addition to this substantial antibacterial activity, the proposed PLA surfaces are also cytocompatible, as demonstrated through the proliferation of L929 fibroblasts.
Collapse
|
53
|
Treccani L, Yvonne Klein T, Meder F, Pardun K, Rezwan K. Functionalized ceramics for biomedical, biotechnological and environmental applications. Acta Biomater 2013; 9:7115-50. [PMID: 23567940 DOI: 10.1016/j.actbio.2013.03.036] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 03/21/2013] [Accepted: 03/23/2013] [Indexed: 12/12/2022]
Abstract
Surface functionalization has become of paramount importance and is considered a fundamental tool for the development and design of countless devices and engineered systems for key technological areas in biomedical, biotechnological and environmental applications. In this review, surface functionalization strategies for alumina, zirconia, titania, silica, iron oxide and calcium phosphate are presented and discussed. These materials have become particularly important concerning the aforementioned applications, being not only of great academic, but also of steadily increasing human and commercial, interest. In this review, special emphasis is given to their use as biomaterials, biosensors, biological targets, drug delivery systems, implants, chromatographic supports for biomolecule purification and analysis, and adsorbents for toxic substances and pollutants. The objective of this review is to provide a broad picture of the enormous possibilities offered by surface functionalization and to identify particular challenges regarding surface analysis and characterization.
Collapse
Affiliation(s)
- Laura Treccani
- University of Bremen, Advanced Ceramics, Am Biologischen Garten 2, 28359 Bremen, Germany.
| | | | | | | | | |
Collapse
|
54
|
Lobo AO, Siqueira IAWB, das Neves MF, Marciano FR, Corat EJ, Corat MAF. In vitro and in vivo studies of a novel nanohydroxyapatite/superhydrophilic vertically aligned carbon nanotube nanocomposites. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:1723-1732. [PMID: 23609000 DOI: 10.1007/s10856-013-4929-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Accepted: 04/13/2013] [Indexed: 06/02/2023]
Abstract
An association between in vitro and in vivo studies has been demonstrated for the first time, using a novel nanohydroxyapatite/superhydrophilic vertically aligned multiwalled carbon nanotube (nHAp/VAMWCNT-O2) nanocomposites. Human osteoblast cell culture and bone defects were used to evaluate the in vitro extracellular matrix (ECM) calcification process and bone regeneration, respectively. The in vitro ECM calcification process of nHAp/VAMWCNT-O2 nanocomposites were investigated using alkaline phosphatase assay. The in vivo biomineralization studies were carried out on bone defects of C57BL/6/JUnib mice. Scanning electron microscopy, micro-energy dispersive spectroscopy, X-ray photoelectron spectroscopy, and X-ray difractometry analyses confirmed the presence of the nHAp crystals. nHAp/VAMWCNT-O2 nanocomposites induced in vitro calcification of the ECM of human osteoblast cells in culture after only 24 h. Bone regeneration with lamellar bone formation after 9 weeks was found in the in vivo studies. Our findings make these new nanocomposites very attractive for application in bone tissue regeneration.
Collapse
Affiliation(s)
- Anderson Oliveira Lobo
- Laboratory of Biomedical Nanotechnology (NANOBIO), Universidade do Vale do Paraiba (UNIVAP), Av. Shishima Hifumi 2911, Sao Jose dos Campos, SP, 12224-000, Brazil.
| | | | | | | | | | | |
Collapse
|
55
|
Gołda M, Brzychczy-Włoch M, Faryna M, Engvall K, Kotarba A. Oxygen plasma functionalization of parylene C coating for implants surface: nanotopography and active sites for drug anchoring. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:4221-7. [PMID: 23910336 DOI: 10.1016/j.msec.2013.06.014] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 05/27/2013] [Accepted: 06/13/2013] [Indexed: 10/26/2022]
Abstract
The effect of oxygen plasma treatment (t=0.1-60 min, pO2=0.2 mbar, P=50 W) of parylene C implant surface coating was investigated in order to check its influence on morphology (SEM, AFM observations), chemical composition (XPS analysis), hydrophilicity (contact angle measurements) and biocompatibility (MG-63 cell line and Staphylococcus aureus 24167 DSM adhesion screening). The modification procedure leads to oxygen insertion (up to 20 at.%) into the polymer matrix and together with surface topography changes has a dramatic impact on wettability (change of contact angle from θ=78±2 to θ=33±1.9 for unmodified and 60 min treated sample, respectively). As a result, the hydrophilic surface of modified parylene C promotes MG-63 cells growth and at the same time does not influence S. aureus adhesion. The obtained results clearly show that the plasma treatment of parylene C surface provides suitable polar groups (C=O, C-O, O-C=O, C-O-O and O-C(O)-O) for further development of the coating functionality.
Collapse
Affiliation(s)
- M Gołda
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, PL-30060 Krakow, Poland.
| | | | | | | | | |
Collapse
|
56
|
Controlled silanization–amination reactions on the Ti6Al4V surface for biomedical applications. Colloids Surf B Biointerfaces 2013; 106:248-57. [DOI: 10.1016/j.colsurfb.2013.01.034] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 01/04/2013] [Accepted: 01/10/2013] [Indexed: 11/20/2022]
|
57
|
Aoyagi S, Gilmore IS, Mihara I, Seah MP, Fletcher IW. Identification and separation of protein, contaminant and substrate peaks using gentle-secondary ion mass spectrometry and the g-ogram. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2012; 26:2815-2821. [PMID: 23124673 DOI: 10.1002/rcm.6409] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
RATIONALE Secondary ion mass spectrometry (SIMS) is an important technique for the characterization of proteins at surfaces. However, interpretation of the mass spectra is complicated owing to confusion with peaks from contaminants and the substrate which is further compounded by complex fragmentation mechanisms. We test a new development of the G-SIMS method called the g-ogram to separate out spectral components without a priori information about which peaks to include in the analysis and which peaks relate to each component. METHODS The effectiveness of the g-ogram method is investigated using a model system of lysozyme adsorbed onto a silicon wafer and indium tin oxide substrates. In the method, two SIMS spectra are acquired using Bi(+) and Mn(+) primary ions which create lower and higher fragmentation in the spectra, respectively. The g-ogram separates out components using a separation parameter that is related to the fragmentation energy. RESULTS The g-ogram separates the spectrum of lysozyme adsorbed onto a silicon wafer into three components: (i) the substrate and PDMS contamination; (ii) a second, but unexpected, contaminant; and (iii) peaks from the protein amino acids. Similar results are achieved for the indium tin oxide substrate. In addition, evidence of fragments from plural amino acids with two candidate peaks at 140.12 Da and 185.08 Da is observed. CONCLUSIONS The g-ogram method effectively separates out mass peaks relating to the substrate, contamination and protein without any a priori information or subjective decisions about which peaks to include in the analysis (so called 'peak picking'). This is a great help to analysts. We find two possible peaks from plural amino acids but no evidence of pluralities is found for peaks above 240 Da that are generated from when using Bi or Mn primary ions.
Collapse
Affiliation(s)
- Satoka Aoyagi
- Shimane University-Regional Environmental Sciences, 1060 Nishikawatsu-cho, Matsue, Shimane, 690-8504, Japan.
| | | | | | | | | |
Collapse
|
58
|
Koegler P, Clayton A, Thissen H, Santos GNC, Kingshott P. The influence of nanostructured materials on biointerfacial interactions. Adv Drug Deliv Rev 2012; 64:1820-39. [PMID: 22705547 DOI: 10.1016/j.addr.2012.06.001] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Revised: 05/29/2012] [Accepted: 06/07/2012] [Indexed: 01/08/2023]
Abstract
Control over biointerfacial interactions in vitro and in vivo is the key to many biomedical applications: from cell culture and diagnostic tools to drug delivery, biomaterials and regenerative medicine. The increasing use of nanostructured materials is placing a greater demand on improving our understanding of how these new materials influence biointerfacial interactions, including protein adsorption and subsequent cellular responses. A range of nanoscale material properties influence these interactions, and material toxicity. The ability to manipulate both material nanochemistry and nanotopography remains challenging in its own right, however, a more in-depth knowledge of the subsequent biological responses to these new materials must occur simultaneously if they are ever to be affective in the clinic. We highlight some of the key technologies used for fabrication of nanostructured materials, examine how nanostructured materials influence the behavior of proteins and cells at surfaces and provide details of important analytical techniques used in this context.
Collapse
Affiliation(s)
- Peter Koegler
- Industrial Research Institute Swinburne, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | | | | | | | | |
Collapse
|
59
|
Marschewski M, Hirschberg J, Omairi T, Höfft O, Viöl W, Emmert S, Maus-Friedrichs W. Electron spectroscopic analysis of the human lipid skin barrier: cold atmospheric plasma-induced changes in lipid composition. Exp Dermatol 2012; 21:921-5. [DOI: 10.1111/exd.12043] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/01/2012] [Indexed: 01/31/2023]
Affiliation(s)
- Marcel Marschewski
- Institute of Energy Research and Physical Technology; Clausthal University of Technology; Clausthal-Zellerfeld; Germany
| | - Joanna Hirschberg
- Faculty of Natural Sciences and Technology; University of Applied Sciences and Arts Hildesheim/Holzminden/Göttingen; Göttingen; Germany
| | - Tarek Omairi
- Faculty of Natural Sciences and Technology; University of Applied Sciences and Arts Hildesheim/Holzminden/Göttingen; Göttingen; Germany
| | - Oliver Höfft
- Clausthaler Zentrum für Materialtechnik; Technische Universität Clausthal; Clausthal-Zellerfeld; Germany
| | | | - Steffen Emmert
- Department of Dermatology, Venerology, and Allergology; University Medical Center Göttingen; Göttingen; Germany
| | | |
Collapse
|
60
|
Electrochemically Deposited Gentamicin-Loaded Calcium phosphate Coatings for Bone Tissue Integration. Int J Artif Organs 2012; 35:876-83. [DOI: 10.5301/ijao.5000162] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/19/2012] [Indexed: 01/11/2023]
Abstract
Purpose Despite improvements in operative environment and surgical techniques, post-operative infections remain one of the most devastating complications in total joint replacement prostheses. Several efforts have been made to modify the surface of materials in order to prevent bacterial adhesion and colonization. Here, we show a one-pot electrochemical surface modification process for co-deposition of calcium phosphate and gentamicin, with the aim of triggering specific biological responses and imparting antibacterial properties on titanium alloy prostheses. Methods Gentamicin-loaded calcium phosphate coatings were deposited on Ti specimens via cathodic polarization in an electrochemical bath containing different amounts of the antibiotic salt (1–10 mg mL–1). Coatings were evaluated in terms of chemico-physical properties, via SEM/EDX, XRD, and ICP analysis, and antibacterial activity, via agar disc diffusion test on Staphylococcus aureus 8325–4 and Staphylococcus aureus SA113. Results An effective incorporation of gentamicin was achieved without any major effect on the morphology and structure. Morphology resulted in a typical plate-like brushite structure, confirmed by chemical composition and crystallographic structure. Gentamicin-loaded coatings showed an antibacterial efficacy on both staphlococcal strains, with a dose-dependent activity. Conclusions Electrochemical technology can be advantageously exploited in order to obtain coatings for bone-contact prostheses with tailored antibacterial properties.
Collapse
|
61
|
Zhang J, Li L, Huang X, Li G. Fabrication of Ag–CeO2 core–shell nanospheres with enhanced catalytic performance due to strengthening of the interfacial interactions. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm16701h] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|