Sulfonic acid-functionalized silica through quantitative oxidation of thiol groups

Cano-Serrano, E.; Campos‐Martín, Jose M.; Fierro, J. L. G.

doi:10.1039/b210766j

Cited by 94 publications

(73 citation statements)

References 7 publications

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“…[124] This layer-by-layer growth method yields uniform colloidal Au multilayers. More recently, MPTMS layers have been oxidized to produce sulfonic acid functionalized silica that can be used as a catalyst in esterification reactions, [125] and MPTMS monolayers have also been used for electroless plating of Ag. [126] Homogeneous epoxy-terminated SAMs have been reported by Luzinov et al to serve as templates for the chemical tethering of polymer layers.…”

Section: Self-assembly Of Functionalized Alkylsilanes and Chemical Trmentioning

confidence: 99%

Engineering Silicon Oxide Surfaces Using Self‐Assembled Monolayers

2005

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Although a molecular monolayer is only a few nanometers thick it can completely change the properties of a surface. Molecular monolayers can be readily prepared using the Langmuir-Blodgett methodology or by chemisorption on metal and oxide surfaces. This Review focuses on the use of chemisorbed self-assembled monolayers (SAMs) as a platform for the functionalization of silicon oxide surfaces. The controlled organization of molecules and molecular assemblies on silicon oxide will have a prominent place in "bottom-up" nanofabrication, which could revolutionize fields such as nanoelectronics and biotechnology in the near future. In recent years, self-assembled monolayers on silicon oxide have reached a high level of sophistication and have been combined with various lithographic patterning methods to develop new nanofabrication protocols and biological arrays. Nanoscale control over surface properties is of paramount importance to advance from 2D patterning to 3D fabrication.

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Section: Self-assembly Of Functionalized Alkylsilanes and Chemical Trmentioning

confidence: 99%

Engineering Silicon Oxide Surfaces Using Self‐Assembled Monolayers

2005

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“…[125] Weiterhin wurden MPTMS-Monoschichten unlängst zur stromlosen Beschichtung von Siliciumoxid mit Ag verwendet. [126] Luzinov et al berichteten von homogenen epoxyterminierten SAMs, die als Schablone für die Anbindung von Polymerschichten dienen.…”

Section: Angewandte Chemieunclassified

Gestaltung der Siliciumoxidoberfläche durch selbstorganisierte Monoschichten

2005

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Nur wenige Nanometer dicke molekulare Monoschichten können die Eigenschaften von Oberflächen vollkommen verändern. Die Herstellung dieser molekularen Monoschichten kann leicht durch die Langmuir‐Blodgett‐Methode oder durch chemische Adsorption (Chemisorption) an Metall‐ und Oxidoberflächen erfolgen. Dieser Aufsatz konzentriert sich auf chemisorbierte selbstorganisierte Monoschichten (SAMs) als Plattformen für die Funktionalisierung von Siliciumoxidoberflächen. Die Organisation von Molekülen und molekularen Aufbauten auf Siliciumoxid wird in der “Bottom‐Up”‐Nanofabrikation einen außerordentlichen Platz einnehmen und könnte Gebiete wie die Nanoelektronik und die Biotechnologie in naher Zukunft revolutionieren. In den letzten Jahren wurden selbstorganisierte Monoschichten auf Siliciumoxid so weit entwickelt und mit verschiedenen lithographischen Methoden kombiniert, dass neue Nanofabrikationsstrategien und biologische Arrays entwickelt werden können. Will man Fortschritte auf dem Weg von der Bildung zweidimensionaler Muster hin zur dreidimensionalen Fabrikation erzielen, ist die Kontrolle von Oberflächeneigenschaften im Nanometerbereich von größter Bedeutung.

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“…Over 15 million tons of sulfuric acid is annually consumed as ''an unrecyclable catalyst''-which requires costly and inefficient separation of the catalyst from homogeneous reaction mixtures-for the production of industrially important chemicals, thus resulting in a huge waste of energy and large quantities of waste products [1][2][3][4][5][6][7][8]. From the view of green process, many heterogeneous catalysts such as organic acid/inorganic solid oxide hybrids and strong acidic cation-exchangeable resins were used for the replacement of the catalyst [9][10][11][12][13]. Nafion is one of the most famous heterogeneous acid catalysts from Du Pont.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a Novel Heterogeneous Strong Acid Catalyst from p-Toluenesulfonic Acid (PTSA) and its Catalytic Activities

et al. 2008

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A novel heterogeneous strong acid catalyst has been synthesized through the copolymerization of p-toluenesulfonic acid and paraformaldehyde with sulfuric acid as catalyst. The novel catalyst owns the strong acidity as much as 4.0 mmol/g, while Nafion and Amberlyst-15 only has the acidity of about 0.8 mmol/g. Furthermore, the catalyst possesses the advantages of the high thermal stability (200°C) and low cost for the simple synthetic procedure. The catalytic activities of the novel catalyst were taken through esterification of acetic acid and ethanol and acetalization of benzolaldehyde and 1,2-ethandiol. The results showed that the novel catalyst showed much higher activities than the Amberlyst-15 and owned even the comparative activity to sulfuric acid, which made the catalyst hold great potential for the replacement of the traditional homogeneous catalyst for the green process.

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Sulfonic acid-functionalized silica through quantitative oxidation of thiol groups

Cited by 94 publications

References 7 publications

Engineering Silicon Oxide Surfaces Using Self‐Assembled Monolayers

Engineering Silicon Oxide Surfaces Using Self‐Assembled Monolayers

Gestaltung der Siliciumoxidoberfläche durch selbstorganisierte Monoschichten

Synthesis of a Novel Heterogeneous Strong Acid Catalyst from p-Toluenesulfonic Acid (PTSA) and its Catalytic Activities

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