An approach to differentiating between multi‐ and monolayers using MALDI‐TOF MS

Quiñones, Rosalynn; Raman, Aparna; Gawalt, Ellen S.

doi:10.1002/sia.2561

Cited by 32 publications

(51 citation statements)

References 55 publications

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“…The tendency of organophosphonic acids to form monolayers on metal oxide surfaces [21][22][23][24] and their important resistance to homocondensation and hydrolysis [25] make them interesting candidates for TiO 2 surface functionalizations. Therefore, the grafting of phosphonic acid compounds on titanium is a topic of great interest that has already been widely studied [26][27][28][29][30][31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Induction heating for surface triggering styrene polymerization on titanium modified with ATRP initiator

Barthélémy

Devillers

Minet

et al. 2011

Journal of Colloid and Interface Science

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Section: Introductionmentioning

confidence: 99%

Induction heating for surface triggering styrene polymerization on titanium modified with ATRP initiator

Barthélémy

Devillers

Minet

et al. 2011

Journal of Colloid and Interface Science

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“…The tendency of organophosphonic acids to form monolayers on metal oxide surfaces [1][2][3][4] and their important resistance to homocondensation and hydrolysis 5,6 make them particularly interesting candidates for such oxidized surface functionalizations. The grafting of phosphonic acid compounds has been studied on several metal oxides such as aluminum, 7-25 titanium, [26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43] titanium alloys, 44,45 silicon, [46][47][48][49] iron, 50 zinc, 51,52 nickel, 53 silver, 54 tantalum, [55][56][57] and stainless steel.…”

mentioning

confidence: 99%

Grafting PEG Fragments on Phynox Substrates Modified with 11-Phosphoundecanoic Acid

Devillers¹,

Cuvelier²,

Delhalle³

et al. 2009

J. Electrochem. Soc.

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Phynox, a cobalt-chromium alloy, exhibits interesting mechanical properties, making it a valuable material for several applications. However, applications as a biomaterial often require specific surface properties that can be imparted with suitable surface functionalizations. The aim of this work is to functionalize the Phynox surfaces with 11-phosphoundecanoic acid monolayers, creating a platform for a large variety of postgrafting chemical reactions, e.g., with alcohols and amines, to modify and control the surface properties. In the first part, we assess the interaction between the two terminal moieties of the 11-phosphoundecanoic acid and the Phynox surface by studying the grafting of n-dodecylphosphonic acid and n-dodecanoic acid. To illustrate the potential of the 11-phosphoundecanoic acid monolayer, we report on our first attempts to postgraft small poly͑ethylene glycol͒ ͑PEG͒ fragments by the Steglich esterification reaction between the carboxylic end of the grafted 11-phosphoundecanoic acid molecules and the alcohol function of PEG fragments.Phynox ͑also known as Elgiloy or Conichrome͒ is an austenitic cobalt-chromium alloy ͑Association française de normalisation designation: K13C20N16Fe15D07͒. In addition to a very high yield strength, Phynox offers a range of interesting physical and chemical properties such as a remarkable resistance to corrosion, a good fatigue strength, its ability to be used in a wide range of temperatures ͑from liquid helium to about 500°C͒, and a high passivity in contact with human tissues. All these properties make Phynox a suitable alloy for applications where a high mechanical performance is required under severely corrosive service conditions such as springs for watch motors, flexible couplings, electrical and electronic apparatuses, aeronautical and aerospace equipment, automotive injection systems, naval equipment, weaponry, surgical implants, and medical instruments, and pacemaker electrodes.In combination with its remarkable bulk properties, several Phynox applications, in particular the biomedical ones, require specific surface properties that can be imparted with suitable surface functionalizations of the Phynox protective oxide layer. The tendency of organophosphonic acids to form monolayers on metal oxide surfaces 1-4 and their important resistance to homocondensation and hydrolysis 5,6 make them particularly interesting candidates for such oxidized surface functionalizations. The grafting of phosphonic acid compounds has been studied on several metal oxides such as aluminum, 7-25 titanium, 26-43 titanium alloys, 44,45 silicon, 46-49 iron, 50 zinc, 51,52 nickel, 53 silver, 54 tantalum, 55-57 and stainless steel. 58 In the frame of biomedical applications, grafting of organophosphonic acids on SS316L 59 and Nitinol, 60 two alloys commonly used for stents/endovascular prothesis, has already been studied, but such work has not been done on Phynox.The aim of the present work is to functionalize the Phynox surfaces with 11-phosphoundecanoic acid monolayers. The resulting ...

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“…The method of formation of the monolayers of methyl terminated phosphonic acid has been reported previously. [41, 43]DRIFT infrared spectroscopy, AFM, MALDI-TOF MS,[44] and contact angle goniometry were performed to ensure monolayer formation, uniformity and stability (Table 1). Results of all characterization techniques were consistent with ordered, stable, uniform monolayer formation for all of the molecules.…”

Section: Resultsmentioning

confidence: 99%

Reduction of 3T3 fibroblast adhesion on SS316L by methyl-terminated SAMs

Raman

Gawalt

2010

Materials Science and Engineering: C

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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 −CH3, −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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An approach to differentiating between multi‐ and monolayers using MALDI‐TOF MS

Cited by 32 publications

References 55 publications

Induction heating for surface triggering styrene polymerization on titanium modified with ATRP initiator

Induction heating for surface triggering styrene polymerization on titanium modified with ATRP initiator

Grafting PEG Fragments on Phynox Substrates Modified with 11-Phosphoundecanoic Acid

Reduction of 3T3 fibroblast adhesion on SS316L by methyl-terminated SAMs

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