Self-Assembled Monolayers of Long-Chain Hydroxamic Acids on the Native Oxide of Metals

Folkers, John P.; Gorman, Christopher B.; Laibinis, Paul E.; Buchholz, Stefan; Whitesides, George M.; Nuzzo, Ralph G.

doi:10.1021/la00003a024

Cited by 328 publications

(271 citation statements)

References 3 publications

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“…The minor 399.2 eV component would be consistent with an alteration product brought about by the secondary or flood-gun electrons, but the bulk complex was not significantly susceptible to such beam damage. The principal component at 401.0 eV can be assigned to protonated N in the hydroxamate ligands [9,10], and this N chemical environment is consistent with the Raman spectrum for the complex [3] and the crystal structure for the acetohydroxamate analog Fe(O 2 NHCCH 3 ) 3 ·1.5H 2 O [11]. The other photoelectron spectra from Fe hydroxamate will be reported elsewhere.…”

Section: Fe Hydroxamate Xpssupporting

confidence: 69%

The Adsorption of n-Octanohydroxamate Collector on Cu and Fe Oxide Minerals Investigated by Static Secondary Ion Mass Spectrometry

2012

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Abstract:The feasibility of investigating the adsorption of n-octanohydroxamate collector on copper and iron oxide minerals with static secondary ion mass spectrometry has been assessed. Secondary ion mass spectra were determined for abraded surfaces of air-exposed copper metal, malachite, pseudomalachite and magnetite that had been conditioned in aqueous potassium hydrogen n-octanohydroxamate solution, as well as for the corresponding bulk Cu II and Fe III complexes. In each case, the chemical species present at the solid/vacuum interface of a similarly prepared surface were established by X-ray photoelectron spectroscopy. The most abundant positive and negative metal-containing fragment ions identified for the bulk complexes were also found to be diagnostic secondary ions for the collector adsorbed on the oxide surfaces. The relative abundances of those diagnostic ions varied with, and could be rationalised by, the monolayer or multilayer coverage of the adsorbed collector. However, the precise mass values for the diagnostic ions were not able to corroborate the different bonding in the copper and iron hydroxamate systems that had been deduced from photoelectron and vibrational spectra. Parent secondary ions were able to provide supporting information on the co-adsorption of hydroxamic acid at each conditioned surface.

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Section: Fe Hydroxamate Xpssupporting

confidence: 69%

The Adsorption of n-Octanohydroxamate Collector on Cu and Fe Oxide Minerals Investigated by Static Secondary Ion Mass Spectrometry

2012

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“…Protein adsorption and cell adhesion are reduced on the phosphorylcholine-assembled surfaces. With the intention of producing well-controlled surfaces on oxide, chlorosilanes [204], hydroxamic acid [205], carboxylic acids [206], and phosphoric and phosphonic acids [207][208][209][210] have been proposed as SAMs molecules.…”

Section: Biochemical Modification Of Titanium and Titanium Alloysmentioning

confidence: 99%

Surface modification of titanium, titanium alloys, and related materials for biomedical applications

Liu

Chu

Ding

2004

Materials Science and Engineering: R: Reports

2,939

1,437

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Titanium and titanium alloys are widely used in biomedical devices and components, especially as hard tissue replacements as well as in cardiac and cardiovascular applications, because of their desirable properties, such as relatively low modulus, good fatigue strength, formability, machinability, corrosion resistance, and biocompatibility. However, titanium and its alloys cannot meet all of the clinical requirements. Therefore, in order to improve the biological, chemical, and mechanical properties, surface modification is often performed. This article reviews the various surface modification technologies pertaining to titanium and titanium alloys including mechanical treatment, thermal spraying, sol-gel, chemical and electrochemical treatment, and ion implantation from the perspective of biomedical engineering. Recent work has shown that the wear resistance, corrosion resistance, and biological properties of titanium and titanium alloys can be improved selectively using the appropriate surface treatment techniques while the desirable bulk attributes of the materials are retained. The proper surface treatment expands the use of titanium and titanium alloys in the biomedical fields. Some of the recent applications are also discussed in this paper. #

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“…PA-based SAMs were chosen taking into consideration several distinct advantages over their silanebased counterparts including (i) better stability to moisture, (ii) less tendency for homocondensation between PAs, and (iii) the reaction between PA and the metal oxide substrate is not limited by the content of surface hydroxyl groups. [26] PA headgroups chemisorb readily to metal oxides [27] forming dense and robust SAMs suitable as resists for selective chemical etching [28] and patterning, [29] organic coatings for bioapplications, [30] and functional materials for organic electronics. [11,16,26b] Anthryl surface groups were chosen to combine p-p interactive forces (0-50 kJ mol À1 ) between neighboring molecules and van der Waals interactions (<5 kJ mol À1 ) [31] between aliphatic chains to promote highquality SAM formation, while providing a chemically and electrically compatible pentacene/dielectric interface.…”

Section: à2mentioning

confidence: 99%

π‐σ‐Phosphonic Acid Organic Monolayer/Sol–Gel Hafnium Oxide Hybrid Dielectrics for Low‐Voltage Organic Transistors

et al. 2008

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Anthryl‐alkyl‐PA (π‐σ‐PA) self‐assembled monolayers (SAMs)/hafnium oxide (HfO2) hybrid dielectrics have been integrated into organic thin film transistors (OTFTs) to achieve operating voltages under −1.5 V. Using π‐σ‐PA SAMs on sol–gel processed HfO2, pentacene‐based OTFTs possess low subthreshold slopes (100 mV dec−1), high on–off current ratios (105–106), and hole mobilities as high as 0.22 cm2 V−1 s−1.

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Self-Assembled Monolayers of Long-Chain Hydroxamic Acids on the Native Oxide of Metals

Cited by 328 publications

References 3 publications

The Adsorption of n-Octanohydroxamate Collector on Cu and Fe Oxide Minerals Investigated by Static Secondary Ion Mass Spectrometry

The Adsorption of n-Octanohydroxamate Collector on Cu and Fe Oxide Minerals Investigated by Static Secondary Ion Mass Spectrometry

Surface modification of titanium, titanium alloys, and related materials for biomedical applications

π‐σ‐Phosphonic Acid Organic Monolayer/Sol–Gel Hafnium Oxide Hybrid Dielectrics for Low‐Voltage Organic Transistors

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