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Moreno S, Brown G, Klein M, Wang Q, Markiewicz JT, Alemán EA, Rushton CG, Quiñones R. Chemical composition effect on latent print development using black fingerprint powders. Forensic Chem 2021. [DOI: 10.1016/j.forc.2021.100366] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Quiñones R, Shoup D, Behnke G, Peck C, Agarwal S, Gupta RK, Fagan JW, Mueller KT, Iuliucci RJ, Wang Q. Study of Perfluorophosphonic Acid Surface Modifications on Zinc Oxide Nanoparticles. MATERIALS 2017; 10:ma10121363. [PMID: 29182559 PMCID: PMC5744298 DOI: 10.3390/ma10121363] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 11/17/2017] [Accepted: 11/22/2017] [Indexed: 12/02/2022]
Abstract
In this study, perfluorinated phosphonic acid modifications were utilized to modify zinc oxide (ZnO) nanoparticles because they create a more stable surface due to the electronegativity of the perfluoro head group. Specifically, 12-pentafluorophenoxydodecylphosphonic acid, 2,3,4,5,6-pentafluorobenzylphosphonic acid, and (1H,1H,2H,2H-perfluorododecyl)phosphonic acid have been used to form thin films on the nanoparticle surfaces. The modified nanoparticles were then characterized using infrared spectroscopy, X-ray photoelectron spectroscopy, and solid-state nuclear magnetic resonance spectroscopy. Dynamic light scattering and scanning electron microscopy-energy dispersive X-ray spectroscopy were utilized to determine the particle size of the nanoparticles before and after modification, and to analyze the film coverage on the ZnO surfaces, respectively. Zeta potential measurements were obtained to determine the stability of the ZnO nanoparticles. It was shown that the surface charge increased as the alkyl chain length increases. This study shows that modifying the ZnO nanoparticles with perfluorinated groups increases the stability of the phosphonic acids adsorbed on the surfaces. Thermogravimetric analysis was used to distinguish between chemically and physically bound films on the modified nanoparticles. The higher weight loss for 12-pentafluorophenoxydodecylphosphonic acid and (1H,1H,2H,2H-perfluorododecyl)phosphonic acid modifications corresponds to a higher surface concentration of the modifications, and, ideally, higher surface coverage. While previous studies have shown how phosphonic acids interact with the surfaces of ZnO, the aim of this study was to understand how the perfluorinated groups can tune the surface properties of the nanoparticles.
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Affiliation(s)
- Rosalynn Quiñones
- Department of Chemistry, Marshall University, Huntington, WV 25755, USA.
| | - Deben Shoup
- Department of Chemistry, Marshall University, Huntington, WV 25755, USA.
| | - Grayce Behnke
- Department of Chemistry, Marshall University, Huntington, WV 25755, USA.
| | - Cynthia Peck
- Department of Chemistry, Marshall University, Huntington, WV 25755, USA.
| | - Sushant Agarwal
- Department of Chemical & Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA.
| | - Rakesh K Gupta
- Department of Chemical & Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA.
| | - Jonathan W Fagan
- Department of Chemistry, Pennsylvania State University, State College, PA 16802, USA.
| | - Karl T Mueller
- Department of Chemistry, Pennsylvania State University, State College, PA 16802, USA.
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99352, USA.
| | - Robbie J Iuliucci
- Chemistry Department, Washington and Jefferson College, Washington, PA 15391, USA.
| | - Qiang Wang
- Department of Physics and Astronomy, West Virginia University, Morgantown, WV 25606, USA.
- Shared Research Facilities, West Virginia University, Morgantown, WV 25606, USA.
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Mattera M, Torres-Cavanillas R, Prieto-Ruiz JP, Prima-García H, Tatay S, Forment-Aliaga A, Coronado E. Self-assembled monolayers on a ferromagnetic permalloy surface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:5311-5318. [PMID: 25919007 DOI: 10.1021/acs.langmuir.5b00988] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Self-assembled monolayers (SAMs) are nowadays broadly used as surface protectors or modifiers and play a key role in many technological applications. This has motivated the study of their formation in all kind of materials; however, and despite the current interest in molecular spintronics, the study of SAMs on ferromagnetic surfaces remains almost unexplored. In this paper, we report for the first time a methodology for the formation of SAMs of n-alkylphosphonic acids on permalloy in ambient conditions. The formed monolayers have been fully characterized by means of contact angle measurements, atomic force microscopy, X-ray photoelectron spectroscopy, matrix assisted laser desorption ionization time-of-flight mass spectrometry, infrared reflection absorption spectroscopy, and X-ray reflectometry. Additionally, the magnetic stability of the modified permalloy after the solution process required for the SAM formation has been confirmed by magneto-optical Kerr effect magnetometry. Moreover, by means of microcontact printing lithography, very accurate SAM patterns have been transferred onto permalloy surfaces and used as resist mask in a chemical etching process giving rise to submicrometric permalloy surface patterns with potential interest in nanomagnetism, spintronics, and storage technologies.
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Affiliation(s)
- Michele Mattera
- Instituto de Ciencia Molecular (ICMol), Universitat de València, C. Catedrático José Beltrán 2, 46980 Paterna, Spain
| | - Ramón Torres-Cavanillas
- Instituto de Ciencia Molecular (ICMol), Universitat de València, C. Catedrático José Beltrán 2, 46980 Paterna, Spain
| | - Juan P Prieto-Ruiz
- Instituto de Ciencia Molecular (ICMol), Universitat de València, C. Catedrático José Beltrán 2, 46980 Paterna, Spain
| | - Helena Prima-García
- Instituto de Ciencia Molecular (ICMol), Universitat de València, C. Catedrático José Beltrán 2, 46980 Paterna, Spain
| | - Sergio Tatay
- Instituto de Ciencia Molecular (ICMol), Universitat de València, C. Catedrático José Beltrán 2, 46980 Paterna, Spain
| | - Alicia Forment-Aliaga
- Instituto de Ciencia Molecular (ICMol), Universitat de València, C. Catedrático José Beltrán 2, 46980 Paterna, Spain
| | - Eugenio Coronado
- Instituto de Ciencia Molecular (ICMol), Universitat de València, C. Catedrático José Beltrán 2, 46980 Paterna, Spain
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Zhu Z, Xu G, An Y, He C. Construction of octadecyltrichlorosilane self-assembled monolayer on stainless steel 316L surface. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.06.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Reducing Staphylococcus aureus biofilm formation on stainless steel 316L using functionalized self-assembled monolayers. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:2059-69. [PMID: 23498233 DOI: 10.1016/j.msec.2013.01.023] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Revised: 12/21/2012] [Accepted: 01/13/2013] [Indexed: 11/20/2022]
Abstract
Stainless steel 316L (SS316L) is a common material used in orthopedic implants. Bacterial colonization of the surface and subsequent biofilm development can lead to refractory infection of the implant. Since the greatest risk of infection occurs perioperatively, strategies that reduce bacterial adhesion during this time are important. As a strategy to limit bacterial adhesion and biofilm formation on SS316L, self-assembled monolayers (SAMs) were used to modify the SS316L surface. SAMs with long alkyl chains terminated with hydrophobic (-CH3) or hydrophilic (oligoethylene glycol) tail groups were used to form coatings and in an orthogonal approach, SAMs were used to immobilize gentamicin or vancomycin on SS316L for the first time to form an "active" antimicrobial coating to inhibit early biofilm development. Modified SS316L surfaces were characterized using surface infrared spectroscopy, contact angles, MALDI-TOF mass spectrometry and atomic force microscopy. The ability of SAM-modified SS316L to retard biofilm development by Staphylococcus aureus was functionally tested using confocal scanning laser microscopy with COMSTAT image analysis, scanning electron microscopy and colony forming unit analysis. Neither hydrophobic nor hydrophilic SAMs reduced biofilm development. However, gentamicin-linked and vancomycin-linked SAMs significantly reduced S. aureus biofilm formation for up to 24 and 48 h, respectively.
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Abstract
The formation of methyl-terminated carboxylic acid self-assembled monolayers (SAMs) with even numbers of carbons, from eighteen to thirty, was investigated on the oxide surface of Ti-6Al-4V and component metal oxides. Modified surfaces were characterized using diffuse reflectance infrared Fourier transform spectroscopy (DRIFT), matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) and contact angle analysis. Infrared spectroscopy indicated that using aerosol spray deposition techniques, stable, all-trans SAMs of octacosanoic (28 carbons) and triacontanoic (30 carbons) acids were formed on the alloy. Films were similarly formed on titanium and aluminum oxide. The surface of vanadium oxide exhibited limited reactivity. MALDI-TOF MS confirmed that formed films were monolayers, without multilayers or aggregates present. Water contact angles are indicative of the presence of hydrophobic methyl groups at the interface. This stable carboxylic acid SAM formation could be a useful alternative to phosphonic acid SAMs for corrosion and other applications.
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Barthélémy B, Devillers S, Minet I, Delhalle J, Mekhalif Z. Induction heating for surface triggering styrene polymerization on titanium modified with ATRP initiator. J Colloid Interface Sci 2011; 354:873-9. [DOI: 10.1016/j.jcis.2010.11.057] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2010] [Revised: 11/16/2010] [Accepted: 11/19/2010] [Indexed: 11/30/2022]
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Hotchkiss PJ, Malicki M, Giordano AJ, Armstrong NR, Marder SR. Characterization of phosphonic acid binding to zinc oxide. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm02829k] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Raman A, Gawalt ES. Reduction of 3T3 Fibroblast Adhesion on SS316L by Methyl-Terminated SAMs. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2010; 30:1157-1161. [PMID: 21461313 PMCID: PMC3065783 DOI: 10.1016/j.msec.2010.06.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Inhibiting the non-specific adhesion of cells and proteins to biomaterials such as stents, catheters and guide wires is an important interfacial issue that needs to be addressed in order to reduce surface-related implant complications. Medical grade stainless steel 316L was used as a model system to address this issue. To alter the interfacial property of the implant, self assembled monolayers of long chain phosphonic acids with -CH(3), -COOH, -OH tail groups were formed on the native oxide surface of medical grade stainless steel 316L. The effect of varying the tail groups on 3T3 fibroblast adhesion was investigated. The methyl terminated phosphonic acid significantly prevented cell adhesion however presentation of hydrophilic tail groups at the interface did not significantly reduce cell adhesion when compared to the control stainless steel 316L.
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Affiliation(s)
- Aparna Raman
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, PA 15282
| | - Ellen S. Gawalt
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, PA 15282
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Preparation of a polyacrylonitrile/multi-walled carbon nanotubes composite by surface-initiated atom transfer radical polymerization on a stainless steel wire for solid-phase microextraction. J Chromatogr A 2010; 1217:2758-67. [DOI: 10.1016/j.chroma.2010.02.030] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2009] [Revised: 02/03/2010] [Accepted: 02/12/2010] [Indexed: 11/17/2022]
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Raman A, Quiñones R, Barriger L, Eastman R, Parsi A, Gawalt ES. Understanding organic film behavior on alloy and metal oxides. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:1747-54. [PMID: 20039608 PMCID: PMC2818877 DOI: 10.1021/la904120s] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Native oxide surfaces of stainless steel 316L and Nitinol alloys and their constituent metal oxides, namely nickel, chromium, molybdenum, manganese, iron, and titanium, were modified with long chain organic acids to better understand organic film formation. The adhesion and stability of films of octadecylphosphonic acid, octadecylhydroxamic acid, octadecylcarboxylic acid, and octadecylsulfonic acid on these substrates were examined in this study. The films formed on these surfaces were analyzed by diffuse reflectance infrared Fourier transform spectroscopy, contact angle goniometry, atomic force microscopy, and matrix-assisted laser desorption ionization mass spectrometry. The effect of the acidity of the organic moiety and substrate composition on the film characteristics and stability is discussed. Interestingly, on the alloy surfaces, the presence of less reactive metal sites does not inhibit film formation.
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Mani G, Johnson DM, Marton D, Feldman MD, Patel D, Ayon AA, Agrawal CM. Drug delivery from gold and titanium surfaces using self-assembled monolayers. Biomaterials 2008; 29:4561-73. [DOI: 10.1016/j.biomaterials.2008.08.014] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2008] [Accepted: 08/20/2008] [Indexed: 02/02/2023]
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Quiñones R, Gawalt ES. Polystyrene formation on monolayer-modified nitinol effectively controls corrosion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:10858-10864. [PMID: 18763818 DOI: 10.1021/la801906e] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A surface-initiated polymerization of styrene on carboxylic acid terminated phosphonic monolayers was utilized to increase the corrosion resistance of nitinol and nickel oxide surfaces. Alkyl chain ordering, organic reactions, wettability, and film quality of the monolayers and polymers were determined by infrared spectroscopy, atomic force microscopy, matrix-assisted laser desorption ionization spectrometry, and water contact angles. The polystyrene film proved to be a better corrosion barrier than phosphonic acid monolayers by analysis with cyclic voltammetry and electrochemical impedance spectroscopy. The protection efficiency of the polystyrene film on nitinol was 99.4% and the monolayer was 42%.
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Affiliation(s)
- Rosalynn Quiñones
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania 15282, USA
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Mani G, Johnson DM, Marton D, Dougherty VL, Feldman MD, Patel D, Ayon AA, Agrawal CM. Stability of self-assembled monolayers on titanium and gold. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:6774-6784. [PMID: 18512878 DOI: 10.1021/la8003646] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Methyl- and hydroxyl-terminated phosphonic acid self-assembled monolayers (SAMs) were coated on Ti from aqueous solution. Dodecyl phosphate and dodecyltrichlorosilane SAMs were also coated on Ti using solution-phase deposition. The stability of SAMs on Ti was investigated in Tris-buffered saline (TBS) at 37 degrees C using X-ray photoelectron spectroscopy, contact angle goniometry, and atomic force microscopy. For comparison purposes, a hydroxyl-terminated thiol SAM was coated on Au, and its stability was also investigated under similar conditions. In TBS, a significant proportion of phosphonic acid or phosphate molecules were desorbed from the Ti surface within 1 day, while the trichlorosilane SAM on Ti or thiol SAM on Au was stable for up to 7 days under similar conditions. The stability of hydroxyl-terminated phosphonic acid SAM coated Ti and thiol SAM coated Au was investigated in ambient air and ultraviolet (UV) light. In ambient air, the phosphonic acid SAM on Ti was stable for up to 14 days, while the thiol SAM on Au was not stable for 1 day. Under UV-radiation exposure, the alkyl chains of the phosphonic acid SAM were decomposed, leaving only the phosphonate groups on the Ti surface after 12 h. Under similar conditions, decomposition of alkyl chains of the thiol SAM was observed on the Au surface accompanied by oxidation of thiolates.
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Affiliation(s)
- Gopinath Mani
- Department of Biomedical Engineering, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA
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Clair S, Variola F, Kondratenko M, Jedrzejowski P, Nanci A, Rosei F, Perepichka DF. Self-assembled monolayer of alkanephosphoric acid on nanotextured Ti. J Chem Phys 2008; 128:144705. [DOI: 10.1063/1.2876421] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Quiñones R, Gawalt ES. Study of the formation of self-assembled monolayers on nitinol. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:10123-30. [PMID: 17725369 DOI: 10.1021/la701110p] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Shape memory alloys such as nitinol (NiTi) have gained interest due to their unique and unusual properties of thermal shape memory, superelasticity, and good damping properties. Nitinol is mainly used for medical purposes. In order to control the surface properties of this alloy, self-assembled monolayers (SAMs) were formed and characterized on the native oxide surface of nitinol for the first time. Factors which affect the formation of SAMs, such as head group functionality, chain length, and tail group functionality, were varied and analyzed. Functionalized alkyl phosphonic acid molecules (OH, COOH, and CH3) formed monolayers on the nitinol surface using a simple deposition method resulting in the molecules being ordered and strongly bound to the surface. Diffuse reflectance infrared spectroscopy (DRIFT), contact angle goniometry, atomic force microscopy (AFM), and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) were used to characterize the surfaces before and after organic modification.
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Affiliation(s)
- Rosalynn Quiñones
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania 15282, USA
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