Order and Orientation in Self-Assembled Long Chain Alkanephosphate Monolayers Adsorbed on Metal Oxide Substrates

Georg Hähner; R Hofer; I Klingenfuss

doi:10.1021/la010713a

Order and Orientation in Self-Assembled Long Chain Alkanephosphate Monolayers Adsorbed on Metal Oxide Substrates

Georg Hähner, R Hofer, I Klingenfuss

Research output: Contribution to journal › Article › peer-review

Abstract

Octadecylphosphoric acid ester was employed to establish monolayers on various flat oxide substrates. The films were prepared via self-assembly from a heptane/propan-2-ol solution. The alkanephosphate was found to produce oriented, well-ordered films on titanium oxide, niobium. oxide, and aluminum oxide surfaces. Contact-angle measurements and near-edge X-ray absorption fine structure spectroscopy (NEXAFS) indicate that these layers closely resemble those formed by a similar thiol-gold system, with respect to packing density, inclination, and molecular order. The preparation scheme appears to be rather universally applicable to a variety of metal oxide substrates. These systems show promise as an approach to functionalizing different oxide surfaces with well-ordered organic monolayers, with potential applications in the fields of corrosion protection, adhesion promotion, biochemical analysis, and sensors.

Original language	English
Pages (from-to)	7047
Number of pages	7047
Journal	Langmuir
Volume	17
DOIs	https://doi.org/10.1021/la010713a
Publication status	Published - 30 Oct 2001

Keywords

FINE-STRUCTURE SPECTROSCOPY
LANGMUIR-BLODGETT-FILMS
STRUCTURAL-CHARACTERIZATION
MOLECULAR MONOLAYERS
ORGANIC-SURFACES
CARBOXYLIC-ACIDS
NATIVE OXIDES
GOLD SURFACES
ALKANETHIOLS
ADSORPTION

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10.1021/la010713a

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title = "Order and Orientation in Self-Assembled Long Chain Alkanephosphate Monolayers Adsorbed on Metal Oxide Substrates",

abstract = "Octadecylphosphoric acid ester was employed to establish monolayers on various flat oxide substrates. The films were prepared via self-assembly from a heptane/propan-2-ol solution. The alkanephosphate was found to produce oriented, well-ordered films on titanium oxide, niobium. oxide, and aluminum oxide surfaces. Contact-angle measurements and near-edge X-ray absorption fine structure spectroscopy (NEXAFS) indicate that these layers closely resemble those formed by a similar thiol-gold system, with respect to packing density, inclination, and molecular order. The preparation scheme appears to be rather universally applicable to a variety of metal oxide substrates. These systems show promise as an approach to functionalizing different oxide surfaces with well-ordered organic monolayers, with potential applications in the fields of corrosion protection, adhesion promotion, biochemical analysis, and sensors.",

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author = "Georg H{\"a}hner and R Hofer and I Klingenfuss",

year = "2001",

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doi = "10.1021/la010713a",

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AU - Hähner, Georg

AU - Hofer, R

AU - Klingenfuss, I

PY - 2001/10/30

Y1 - 2001/10/30

N2 - Octadecylphosphoric acid ester was employed to establish monolayers on various flat oxide substrates. The films were prepared via self-assembly from a heptane/propan-2-ol solution. The alkanephosphate was found to produce oriented, well-ordered films on titanium oxide, niobium. oxide, and aluminum oxide surfaces. Contact-angle measurements and near-edge X-ray absorption fine structure spectroscopy (NEXAFS) indicate that these layers closely resemble those formed by a similar thiol-gold system, with respect to packing density, inclination, and molecular order. The preparation scheme appears to be rather universally applicable to a variety of metal oxide substrates. These systems show promise as an approach to functionalizing different oxide surfaces with well-ordered organic monolayers, with potential applications in the fields of corrosion protection, adhesion promotion, biochemical analysis, and sensors.

AB - Octadecylphosphoric acid ester was employed to establish monolayers on various flat oxide substrates. The films were prepared via self-assembly from a heptane/propan-2-ol solution. The alkanephosphate was found to produce oriented, well-ordered films on titanium oxide, niobium. oxide, and aluminum oxide surfaces. Contact-angle measurements and near-edge X-ray absorption fine structure spectroscopy (NEXAFS) indicate that these layers closely resemble those formed by a similar thiol-gold system, with respect to packing density, inclination, and molecular order. The preparation scheme appears to be rather universally applicable to a variety of metal oxide substrates. These systems show promise as an approach to functionalizing different oxide surfaces with well-ordered organic monolayers, with potential applications in the fields of corrosion protection, adhesion promotion, biochemical analysis, and sensors.

KW - FINE-STRUCTURE SPECTROSCOPY

KW - LANGMUIR-BLODGETT-FILMS

KW - STRUCTURAL-CHARACTERIZATION

KW - MOLECULAR MONOLAYERS

KW - ORGANIC-SURFACES

KW - CARBOXYLIC-ACIDS

KW - NATIVE OXIDES

KW - GOLD SURFACES

KW - ALKANETHIOLS

KW - ADSORPTION

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U2 - 10.1021/la010713a

DO - 10.1021/la010713a

M3 - Article

SN - 0743-7463

VL - 17

SP - 7047

JO - Langmuir

JF - Langmuir

ER -

Order and Orientation in Self-Assembled Long Chain Alkanephosphate Monolayers Adsorbed on Metal Oxide Substrates

Abstract

Keywords

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