Reactions of a Trifunctional Silane Coupling Agent in the Presence of Colloidal Silica Sols in Polar Media

Daniels, M. W.; Šefčı́k, Ján; Francis, Lorraine F.; McCormick, Alon V.

doi:10.1006/jcis.1999.6497

Cited by 65 publications

(48 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[30,32,33] The reaction mechanism has not been further investigated here, but, as indicated, the reaction most likely proceeds via the formation of oligomeric aggregates in solution by a polycondensation reaction of the silanol units (see Fig. 4a), which may continue after their deposition onto the substrate.…”

Section: Discussionmentioning

confidence: 99%

Corrosion Protection and Long-Term Chemical Functionalization of Gallium Arsenide in an Aqueous Environment

et al. 2002

View full text Add to dashboard Cite

The chemical instability of the gallium arsenide surface poses a serious limitation to its use under ambient conditions, such as in air or aqueous solution. It is shown that both bare GaAs and GaAs coated with self‐assembled monolayers of organic alkanethiols are continuously etched in aqueous environments, which limits their use as biosensor devices in physiological environments. A corrosion protection material having long‐term stability (“chemical passivation”) and biocompatibility (“biological passivation”) with the GaAs surface was found to be interfacial layers of polymerized organic mercaptosilanes a few tens of nanometers thick. The mercaptosilanes not only provided a nearly perfect corrosion protection of GaAs in water, but they also have the potential to introduce chemical groups that allow easy, further surface functionalization. Characterization of the interfacial polymer layer and its protective role was done by atomic force microscopy (AFM), ellipsometry, contact angle measurements, and atomic absorption spectroscopy (AAS). The interfacial polymer layers fully suppressed the release of arsenic into the electrolyte buffer and also provided an adhesion‐promoting interface, which allowed the cultivation of electrically excitable cells, normal rat kidney (NRK) fibroblasts, on GaAs. The electrical performance of GaAs and GaAs/InGaAs heterostructures in water was monitored via cyclic voltammetry and the IU characteristics of field‐effect channels. GaAs was significantly stabilized by the insulating polymeric surface coatings, even under moderate electrochemical loads. These findings are promising for, e.g., the implementation of GaAs technology in future cell–semiconductor hybrids.

show abstract

Section: Discussionmentioning

confidence: 99%

Corrosion Protection and Long-Term Chemical Functionalization of Gallium Arsenide in an Aqueous Environment

et al. 2002

View full text Add to dashboard Cite

show abstract

“…The added acid can catalyze this reaction though a nucleophilic attack at the silicon atom of silane. Compared with the hydrolysis, the silane condensation reaction was slower in acidic conditions than in basic conditions [9]. So long reaction time was necessary for the completion of the condensation reaction between silane and the nanosilica surface.…”

Section: Effect Of Treatment Duration and Silane Concentration On Thementioning

confidence: 99%

Study on mono-dispersed nano-size silica by surface modification for underfill applications

Sun

Zhang

Wong

2005

Journal of Colloid and Interface Science

229

121

View full text Add to dashboard Cite

“…Only some of these studies mention the quantitative amount of the grafted molecules [3][4][5][6][7][8][9]. The experimentally determined maximum values for the surface coverage of oxides by MPS range from 2.8 to 7.5 µmol/m 2 , depending on the type of oxide.…”

Section: Introductionmentioning

confidence: 97%

Surface modification of oxidic nanoparticles using 3-methacryloxypropyltrimethoxysilane

Posthumus

Magusin

Brokken-Zijp

et al. 2004

Journal of Colloid and Interface Science

142

View full text Add to dashboard Cite

Reactions of a Trifunctional Silane Coupling Agent in the Presence of Colloidal Silica Sols in Polar Media

Cited by 65 publications

References 29 publications

Corrosion Protection and Long-Term Chemical Functionalization of Gallium Arsenide in an Aqueous Environment

Corrosion Protection and Long-Term Chemical Functionalization of Gallium Arsenide in an Aqueous Environment

Study on mono-dispersed nano-size silica by surface modification for underfill applications

Surface modification of oxidic nanoparticles using 3-methacryloxypropyltrimethoxysilane

Contact Info

Product

Resources

About