The Influence of Thermal Treatment of Silica Gel on Surface–Molecule Interactions

Biliński, Bogdan

doi:10.1006/jcis.1998.5411

Cited by 4 publications

(17 citation statements)

References 22 publications

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“…This triad of compounds is appropriate for investigating the types of interactions of a solid surface. The gas phase titration measurements were performed at 373 K (11,12); therefore, the most important isotherms were those determined at this temperature. They are presented in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…This gel was from the same sample as in the previous investigation, i.e., the determination of surface free energy components (11,13) and gas phase titration measurements (11,12). The total pore volume (1.1 cm 3 g −1 ) and the average pore radius (7 nm) were determined by mercury porosimetry (Carlo Erba 4000, Italy), while the specific surface area (468 m 2 g −1 ) was determined by thermal desorption of nitrogen (14).…”

Section: Methodsmentioning

confidence: 99%

“…Adsorption isotherms of n-octane (for gas chromatography, Fluka, Switzerland), benzene, and chloroform (p.a., POCH, Poland) were determined at 373, 363, and 353 K. These compounds were applied as testing probes in the gas phase titration (11,12). Prior to the measurements they were dried with wide-porous silica gel.…”

Section: Methodsmentioning

confidence: 99%

“…By a proper selection of these substances (i.e., apolar, electron-donor, or electron-acceptor), changes in particular types of surfacemolecule interactions may be investigated (11). However, for a direct comparison of the results obtained for various probes, as well as for various sample areas, a suitable recalculation of the retention drop is required (11,12). The gas phase titration method allows the estimation of surface concentration ranges for adsorption sites differing in interaction energy (1,10).…”

Section: Introductionmentioning

confidence: 98%

“…The aim of the present paper is to determine adsorption isotherms of the testing probes applied in GPT measurements (11,12) under the same conditions, i.e., at high temperature and low surface coverage (adsorbed amount). They were expected to provide additional information on surface-molecule interactions, considered in terms of both type and strength, as well as estimates of the interaction energies for particular populations of adsorption sites.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

High-Temperature Adsorption of n-Octane, Benzene, and Chloroform onto Silica Gel Surface

Biliński

2000

Journal of Colloid and Interface Science

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

High-Temperature Adsorption of n-Octane, Benzene, and Chloroform onto Silica Gel Surface

Biliński

2000

Journal of Colloid and Interface Science

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The Influence of a Long-Chain Hydrocarbon on the Retention of Probes Differing in the Type of Intermolecular Interactions

Biliński

2000

Journal of Colloid and Interface Science

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Silicon, Silica and its Surface Patterning/Activation with Alkoxy- and Amino-Silanes for Nanomedical Applications

et al. 2011

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Silica and silicates are widely used in nanomedicine with applications as diverse as medical device coatings to replacement materials in tissue engineering. Although much is known about silica and its synthesis, relatively few biomedical scientists fully appreciate the link that exists between its formulation and its resultant structure and function. This article attempts to provide insight into relevant issues in that context, as well as highlighting their importance in the material's eventual surface patterning/activation with alkoxy- and organo-silanes. The use of aminosilanes in that context is discussed at some length to permit an understanding of the specific variables that are important in the reproducible and robust aminoactivation of surfaces using such molecules. Recent investigative work is cited to underline the fact that although aminosilanization is a historically accepted mechanism for surface activation, there is still much to be explained about how and why the process works in the way it does. In the last section of this article, there is a detailed discussion of two classical approaches for the use of aminosilanized materials in the covalent immobilization of bioligands, amino-aldehyde and amino-carboxyl coupling. In the former case, the use of the homobifunctional coupler glutaraldehyde is explored, and in the latter, carbodiimides. Although these chemistries have long been employed in bioconjugations, it is apparent that there are still variables to be explored in the processes (as witnessed by continuing investigations into the chemistries concerned). Aspects regarding optimization, standardization and reproducibility of the fabrication of amino functionalized surfaces are discussed in detail and illustrated with practical examples to aid the reader in their own studies, in terms of considerations to be taken into account when producing such materials. Finally, the article attempts to remind readers that although the chemistry and materials involved are 'old hat', there is still much to be learnt about the methods involved. The article also reminds readers that although many highly specific and costly conjugation chemistries now exist for bioligands, there still remains a place for these relatively simple and cost-effective approaches in bioligand conjugate fabrication.

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The Influence of Thermal Treatment of Silica Gel on Surface–Molecule Interactions

Cited by 4 publications

References 22 publications

High-Temperature Adsorption of n-Octane, Benzene, and Chloroform onto Silica Gel Surface

High-Temperature Adsorption of n-Octane, Benzene, and Chloroform onto Silica Gel Surface

The Influence of a Long-Chain Hydrocarbon on the Retention of Probes Differing in the Type of Intermolecular Interactions

Silicon, Silica and its Surface Patterning/Activation with Alkoxy- and Amino-Silanes for Nanomedical Applications

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