Synthesis of adhesion promoters for grafting polythiophene onto metal oxides

Jaehne, Evelin; Ferse, Dirk; Busch, Gernot; Adler, Hans‐Juergen P.; Singh, Ashutosh; Varma, I. K.

doi:10.1163/156855502760408107

Cited by 14 publications

(2 citation statements)

References 48 publications

(44 reference statements)

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“…With the intention to produce similarly well-controlled surfaces on metal oxide surfaces, silanes, , thiols, , and phosphoric and phosphonic acids , have been proposed as SAMs. However, silanes often show a high tendency to form multilayers through uncontrolled polymerization, and SAMs of thiol molecules are known to be less stable on materials other than gold and silver surfaces.…”

Section: Introductionmentioning

confidence: 99%

Carboxy-Terminated Oligo(ethylene glycol)−Alkane Phosphate: Synthesis and Self-Assembly on Titanium Oxide Surfaces

et al. 2006

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The surface immobilization of oligo- and poly(ethylene glycol) on solids is a widely used approach to prevent the nonspecific adsorption of proteins, bacteria, and cells. A novel tri(ethylene glycol) derivative, phosphoric acid-mono(22-carboxy-12,15,18,21-tetraoxadocosyl) ester, was synthesized with the aim to produce self-assembled monolayers (SAMs) on metal/metal oxide surfaces. This compound contains two reactive, terminal moieties: the phosphoric acid group as anchor to the surface, and the carboxylic group as linker for further attachment of molecules such as peptides and proteins to be present at the surface. The adsorption on titanium-dioxide-coated substrates was studied quantitatively and the resulting SAMs were characterized by angle-dependent X-ray photoelectron spectroscopy (XPS) and spectroscopic ellipsometry. XPS data showed that the monomolecular layer is attached with the phosphate group to the substrate, but not fully ordered. The dry adlayer thickness was determined to be 13.4 A, which is less than expected for a densely packed monolayer. Surface concentration calculated from ellipsometry data resulted in a grafting density of 2.03 molecules/nm2.

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Section: Introductionmentioning

confidence: 99%

Carboxy-Terminated Oligo(ethylene glycol)−Alkane Phosphate: Synthesis and Self-Assembly on Titanium Oxide Surfaces

et al. 2006

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“…This methodology has numerous potential applications, including adhesion promotion [1,2], microcontact printing [3], chemical/biological sensing [4,5], corrosion resistance [6], and wetting [7]. In the field of SAMs, the Au/thiol system has been investigated extensively because Au is very stable in an atmosphere that will promote the adsorption of thiols onto the Au surface [8] and the adsorptive ability between the thiol group and gold is very strong and highly stable [9].…”

Section: Introductionmentioning

confidence: 99%

Self-assembled monolayers of 2-(thienyl)hexylphosphonic acid on native oxide surface of silicon fabricated by air–liquid interface-assisted method

Hsu¹,

Liou²,

Su³

et al. 2008

Journal of Colloid and Interface Science

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Synthesis of Block Copolymers Modified with Phosphonate Ester Groups Using Nitroxide‐Mediated Radical Polymerization

Britze

Moosmann

Jähne

et al. 2006

Macromol. Rapid Commun.

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Fluorescent gold nanoparticles are important biological labels, in particular for combined optical and electron microscopy. It is reported that density and type of surface ligands have key influence on the dominant UV‐vis fluorescence band in positively and negatively charged gold nanoparticles capped with citrate, gold oxide, and cetyltrimethyl ammonium bromide (CTAB). The peak excitation and emission energies and fluorescence intensities vary with nanoparticle size, reflecting changes in surface charge and surface potential as well as a varying density of surface adsorbates. The fluorescence peak shifts, the evolution of zeta potentials, and fluorescence intensity trends are explained by a model of the principal fluorescence transitions that takes into account the nanoparticle surface conditions, such as the adhesion of ligands. Varying surface ligands is a simple strategy to optimize fluorescence intensity and to design spectral properties of gold nanoparticles.

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Synthesis of adhesion promoters for grafting polythiophene onto metal oxides

Cited by 14 publications

References 48 publications

Carboxy-Terminated Oligo(ethylene glycol)−Alkane Phosphate: Synthesis and Self-Assembly on Titanium Oxide Surfaces

Carboxy-Terminated Oligo(ethylene glycol)−Alkane Phosphate: Synthesis and Self-Assembly on Titanium Oxide Surfaces

Self-assembled monolayers of 2-(thienyl)hexylphosphonic acid on native oxide surface of silicon fabricated by air–liquid interface-assisted method

Synthesis of Block Copolymers Modified with Phosphonate Ester Groups Using Nitroxide‐Mediated Radical Polymerization

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