Macro-, micro- and nano-investigations on 3-aminopropyltrimethoxysilane self-assembly-monolayers

Allen, G. C.; Sorbello, Fabio; Altavilla, Claudia; Castorina, Antonio; Ciliberto, Enrico

doi:10.1016/j.tsf.2004.12.062

Cited by 78 publications

(61 citation statements)

References 17 publications

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“…APTMS SAM has shown a thickness of 4.1 nm where as the silicon oxide (after piranha treatment) has shown a value of~2 nm. The thickness of the present APTMS SAM is slightly higher than a monolayer thickness (0.7 nm) [27] and suggests that it formed as few multilayers and is consistent with the literature findings [28]. High humidity in the ambient conditions might have 1 nm, respectively.…”

Section: Thickness Resultssupporting

confidence: 90%

Effect of Molecular Structure on Friction and Wear of Polymer Thin Films Deposited on Si Surface

2007

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In this study, the influence of the molecular structure (linear or with bulky side groups) of polymer films covalently attached to Si surface on tribological properties is investigated. Two polymers, PE (polyethylene) and PS (polystyrene), are selected where PE has simple linear molecular structure whereas PS has linear molecular structure but contains bulky benzene groups located at the sides of the linear chain. PE and PS molecules, both with reactive maleic anhydride groups, are chemisorbed onto Si via an intermediate APTMS SAM (3-aminopropyltrimethoxysilane self-assembled monolayer). Water contact angle measurements, AFM (atomic force microscopy), ellipsometry, and XPS (X-ray photoelectron spectroscopy) are used to identify and characterize the polymer films. Tribological properties are studied using a microtribometer where a 4 mm diameter Si 3 N 4 ball is used as the counterface. Among the two polymer films investigated, Si/APTMS/PE has shown very low coefficient of friction (0.08) and high wear life (~4,400 cycles) than those of Si/APTMS/PS. Surprisingly, Si/APTMS/PS did not show any improvement in tribological properties when compared to that of bare Si. The present study proves that the polymer with linear molecular structure without the bulky side groups show good tribological properties even when it is coated as a thin film and hence such polymers can be used as thin-films for reducing friction and wear of substrates such as Si or other materials.

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Section: Thickness Resultssupporting

confidence: 90%

Effect of Molecular Structure on Friction and Wear of Polymer Thin Films Deposited on Si Surface

2007

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“…The main peak at 399.6 eV was assigned to free, outward oriented amino groups of APTMS, while the presence of a shoulder at 401.5 eV was attributed in Refs. [14,15] to amino groups which can undergo H-bonding with each other or with substrate hydroxyls. Based on the values of these partial peaks in Fig.…”

Section: Resultsmentioning

confidence: 99%

Formation and characterization of low resistivity sub-100nm copper films deposited by electroless on SAM

Asher

Inberg

Glickman

et al. 2009

Electrochimica Acta

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“…Macroscale properties of silane films have been characterized by use of Fourier transform infrared (FTIR) spectroscopy (Kessel and Granick, 1991;Kanan et al ., 2002), X-ray photoelectron spectroscopy (Moon et al ., 1997;Allen et al ., 2005;Crampton et al ., 2005;Chen et al ., 2006;Metwalli et al ., 2006;Martin et al ., 2007), UV-vis spectrophotometry (Moon et al ., 1996(Moon et al ., , 1997, ellipsometry (Kurth and Bein, 1995;Moon et al ., 1996Moon et al ., , 1997, and quartz-crystal microbalance measurements (Kurth and Bein, 1995). These methods have provided essential insight into film properties but cannot describe the distribution of available amino groups or the microscale morphology of the film.…”

Section: Introductionmentioning

confidence: 99%

Morphology and Amine Accessibility of (3‐Aminopropyl) Triethoxysilane Films on Glass Surfaces

Wang

Vaughn

2008

Scanning

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3-Aminopropyl) triethoxysilane (APTES) is commonly used to functionalize glass substrates because it can form an amine-reactive film that is tightly attached to the surface. In this study, we investigated the morphology and chemical reactivity of APTES films prepared on glass substrates using common deposition techniques. Films were prepared using concentrated vapor-phase deposition, dilute vapor-phase deposition, anhydrous organic-phase deposition and aqueous-phase deposition. All films were annealed, or cured, at 150 degrees C. The morphology of the films was quantified by fluorescence and by atomic force microscopy (AFM). The optical equivalent of the AFM images was computed and then used to directly compare optical and AFM images. Reactive amine density was determined by a picric acid assay and by a method that employed N-succinimidyl 3-[2-pyridyldithio]-propionamido (SPDP) cross-linked rhodamine. Fluorescence and AFM images showed that silane films prepared from dilute vapor-phase and aqueous-phase deposition were more uniform and had fewer domains than those deposited by the other methods. The ratio of picric acid-accessible amino groups to SPDP cross-linked rhodamine-accessible groups varied with the preparation method, suggesting reactant size-dependent difference in amine accessibility. We found a larger number of accessible amino groups on films prepared by vapor-phase deposition than on those prepared from solution deposition. The dilute vapor-phase deposition technique produced relatively few domains, and it should be a good choice for bioconjugation applications. There were appreciable differences in the films produced by each method. We suggest that these differences originate from differences in film rearrangement during annealing.

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Macro-, micro- and nano-investigations on 3-aminopropyltrimethoxysilane self-assembly-monolayers

Cited by 78 publications

References 17 publications

Effect of Molecular Structure on Friction and Wear of Polymer Thin Films Deposited on Si Surface

Effect of Molecular Structure on Friction and Wear of Polymer Thin Films Deposited on Si Surface

Formation and characterization of low resistivity sub-100nm copper films deposited by electroless on SAM

Morphology and Amine Accessibility of (3‐Aminopropyl) Triethoxysilane Films on Glass Surfaces

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