Structure and properties of multilayered siloxane-organic hybrid films prepared using long-chain organotrialkoxysilanes containing CC double bonds

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    Abstract

    Oriented multilayered films composed of alternating siloxane layers and organic layers were prepared from mixtures of tetramethoxysilane [Si(OMe) 4] and unsaturated organotrimethoxysilane [RSi(OMe)3, where R is CH2CH(CH2)8- or CH 2CH(CH2)2CHCH(CH2)4-], and the structures and macroscopic properties of the films were studied. Hydrolysis and partial condensation of the precursors led to the formation of amphiphilic organosiloxane species which self-assemble into lamellar phases. Polymerization of the organic phase occurred by UV irradiation, as evidenced by substantial decreases of the IR absorption bands due to -CHCH2 or -CHCH- groups. The hardness of the films was remarkably increased by the irradiation, due to the covalent linking of adjacent siloxane layers by organic polymerization. The films after organic polymerization had a much higher resistance to an alkaline solution, which enabled the patterning of the films on the micrometer length scale. These results provide an important insight into the structure-property relationships of nanostructured hybrid materials prepared by sol-gel chemistry. This journal is

    Original languageEnglish
    Pages (from-to)658-663
    Number of pages6
    JournalJournal of Materials Chemistry
    Volume17
    Issue number7
    DOIs
    Publication statusPublished - 2007

    Fingerprint

    Siloxanes
    siloxanes
    polymerization
    Polymerization
    Irradiation
    irradiation
    Hybrid materials
    high resistance
    Nanostructured materials
    Sol-gels
    hydrolysis
    micrometers
    Absorption spectra
    Condensation
    Hydrolysis
    hardness
    condensation
    Hardness
    gels
    methylidyne

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Materials Chemistry
    • Materials Science(all)

    Cite this

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    title = "Structure and properties of multilayered siloxane-organic hybrid films prepared using long-chain organotrialkoxysilanes containing CC double bonds",
    abstract = "Oriented multilayered films composed of alternating siloxane layers and organic layers were prepared from mixtures of tetramethoxysilane [Si(OMe) 4] and unsaturated organotrimethoxysilane [RSi(OMe)3, where R is CH2CH(CH2)8- or CH 2CH(CH2)2CHCH(CH2)4-], and the structures and macroscopic properties of the films were studied. Hydrolysis and partial condensation of the precursors led to the formation of amphiphilic organosiloxane species which self-assemble into lamellar phases. Polymerization of the organic phase occurred by UV irradiation, as evidenced by substantial decreases of the IR absorption bands due to -CHCH2 or -CHCH- groups. The hardness of the films was remarkably increased by the irradiation, due to the covalent linking of adjacent siloxane layers by organic polymerization. The films after organic polymerization had a much higher resistance to an alkaline solution, which enabled the patterning of the films on the micrometer length scale. These results provide an important insight into the structure-property relationships of nanostructured hybrid materials prepared by sol-gel chemistry. This journal is",
    author = "Atsushi Shimojima and Wu, {Chia Wen} and Kazuyuki Kuroda",
    year = "2007",
    doi = "10.1039/b615027f",
    language = "English",
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    pages = "658--663",
    journal = "Journal of Materials Chemistry",
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    publisher = "Royal Society of Chemistry",
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    TY - JOUR

    T1 - Structure and properties of multilayered siloxane-organic hybrid films prepared using long-chain organotrialkoxysilanes containing CC double bonds

    AU - Shimojima, Atsushi

    AU - Wu, Chia Wen

    AU - Kuroda, Kazuyuki

    PY - 2007

    Y1 - 2007

    N2 - Oriented multilayered films composed of alternating siloxane layers and organic layers were prepared from mixtures of tetramethoxysilane [Si(OMe) 4] and unsaturated organotrimethoxysilane [RSi(OMe)3, where R is CH2CH(CH2)8- or CH 2CH(CH2)2CHCH(CH2)4-], and the structures and macroscopic properties of the films were studied. Hydrolysis and partial condensation of the precursors led to the formation of amphiphilic organosiloxane species which self-assemble into lamellar phases. Polymerization of the organic phase occurred by UV irradiation, as evidenced by substantial decreases of the IR absorption bands due to -CHCH2 or -CHCH- groups. The hardness of the films was remarkably increased by the irradiation, due to the covalent linking of adjacent siloxane layers by organic polymerization. The films after organic polymerization had a much higher resistance to an alkaline solution, which enabled the patterning of the films on the micrometer length scale. These results provide an important insight into the structure-property relationships of nanostructured hybrid materials prepared by sol-gel chemistry. This journal is

    AB - Oriented multilayered films composed of alternating siloxane layers and organic layers were prepared from mixtures of tetramethoxysilane [Si(OMe) 4] and unsaturated organotrimethoxysilane [RSi(OMe)3, where R is CH2CH(CH2)8- or CH 2CH(CH2)2CHCH(CH2)4-], and the structures and macroscopic properties of the films were studied. Hydrolysis and partial condensation of the precursors led to the formation of amphiphilic organosiloxane species which self-assemble into lamellar phases. Polymerization of the organic phase occurred by UV irradiation, as evidenced by substantial decreases of the IR absorption bands due to -CHCH2 or -CHCH- groups. The hardness of the films was remarkably increased by the irradiation, due to the covalent linking of adjacent siloxane layers by organic polymerization. The films after organic polymerization had a much higher resistance to an alkaline solution, which enabled the patterning of the films on the micrometer length scale. These results provide an important insight into the structure-property relationships of nanostructured hybrid materials prepared by sol-gel chemistry. This journal is

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