Pyrolytic conversion of an Al-Si-N-C precursor prepared via hydrosilylation between [Me(H)SiNH]4 and [HAlN(alIyl)] m[HAlN(ethyl)]n

Yusuke Mori, Yoshiyuki Sugahara

    Research output: Contribution to journalArticle

    10 Citations (Scopus)

    Abstract

    An iminoalane-silazane polymer (ISP), an Al-Si-N-C precursor, has been synthesized via Ptcatalyzed hydrosilylation between poly(allyl iminoalane-co-ethyl iminoalane) ([HAlN(allyl)]m[HAlN (ethyl)] n, AE-alane) and l,3,5,7-tetrahydro-1,3,5,7-tetramethylcyclotetrasilazane {[Me(H)SiNH] 4, TCS}. The IR and 1H NMR spectra of ISP indicate that the relative amounts of the allyl groups decrease slightly in comparison with those of AE-alane, suggesting that hydrosilylation occurs partially. TG analysis up to 900 °C reveals that the ceramic yield of ISP is 83.1 mass%. It is suggested that the high ceramic yield can be ascribed to cross-linking reactions occurring during pyrolysis. Possible reactions during pyrolysis are hydrosilylation, polymerization of the C=C bonds in the allyl groups and dehydrocoupling among the SiH groups, NH groups and AlH groups in ISP. The pyrolyzed residue at 1700 °C contains crystalline AIN, 2H-SiC, β-SiC and β-Si3N4 and amorphous carbon, as revealed by solid-state nuclear magnetic resonance (NMR) spectroscopy, Raman spectroscopy and X-ray diffraction (XRD) analysis.

    Original languageEnglish
    Pages (from-to)527-534
    Number of pages8
    JournalApplied Organometallic Chemistry
    Volume20
    Issue number8
    DOIs
    Publication statusPublished - 2006 Aug

    Fingerprint

    Hydrosilylation
    Polymers
    Pyrolysis
    Amorphous carbon
    X ray diffraction analysis
    Nuclear magnetic resonance spectroscopy
    Raman spectroscopy
    Polymerization
    Nuclear magnetic resonance
    Crystalline materials

    Keywords

    • Aluminum nitride
    • Ceramic-based composites
    • Hydrosilylation
    • Precursor
    • Pyrolysis
    • Silicon carbide
    • Solid-state nuclear magnetic resonance (NMR)

    ASJC Scopus subject areas

    • Chemistry (miscellaneous)
    • Inorganic Chemistry
    • Bioengineering
    • Materials Chemistry

    Cite this

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    title = "Pyrolytic conversion of an Al-Si-N-C precursor prepared via hydrosilylation between [Me(H)SiNH]4 and [HAlN(alIyl)] m[HAlN(ethyl)]n",
    abstract = "An iminoalane-silazane polymer (ISP), an Al-Si-N-C precursor, has been synthesized via Ptcatalyzed hydrosilylation between poly(allyl iminoalane-co-ethyl iminoalane) ([HAlN(allyl)]m[HAlN (ethyl)] n, AE-alane) and l,3,5,7-tetrahydro-1,3,5,7-tetramethylcyclotetrasilazane {[Me(H)SiNH] 4, TCS}. The IR and 1H NMR spectra of ISP indicate that the relative amounts of the allyl groups decrease slightly in comparison with those of AE-alane, suggesting that hydrosilylation occurs partially. TG analysis up to 900 °C reveals that the ceramic yield of ISP is 83.1 mass{\%}. It is suggested that the high ceramic yield can be ascribed to cross-linking reactions occurring during pyrolysis. Possible reactions during pyrolysis are hydrosilylation, polymerization of the C=C bonds in the allyl groups and dehydrocoupling among the SiH groups, NH groups and AlH groups in ISP. The pyrolyzed residue at 1700 °C contains crystalline AIN, 2H-SiC, β-SiC and β-Si3N4 and amorphous carbon, as revealed by solid-state nuclear magnetic resonance (NMR) spectroscopy, Raman spectroscopy and X-ray diffraction (XRD) analysis.",
    keywords = "Aluminum nitride, Ceramic-based composites, Hydrosilylation, Precursor, Pyrolysis, Silicon carbide, Solid-state nuclear magnetic resonance (NMR)",
    author = "Yusuke Mori and Yoshiyuki Sugahara",
    year = "2006",
    month = "8",
    doi = "10.1002/aoc.1079",
    language = "English",
    volume = "20",
    pages = "527--534",
    journal = "Applied Organometallic Chemistry",
    issn = "0268-2605",
    publisher = "John Wiley and Sons Ltd",
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    T1 - Pyrolytic conversion of an Al-Si-N-C precursor prepared via hydrosilylation between [Me(H)SiNH]4 and [HAlN(alIyl)] m[HAlN(ethyl)]n

    AU - Mori, Yusuke

    AU - Sugahara, Yoshiyuki

    PY - 2006/8

    Y1 - 2006/8

    N2 - An iminoalane-silazane polymer (ISP), an Al-Si-N-C precursor, has been synthesized via Ptcatalyzed hydrosilylation between poly(allyl iminoalane-co-ethyl iminoalane) ([HAlN(allyl)]m[HAlN (ethyl)] n, AE-alane) and l,3,5,7-tetrahydro-1,3,5,7-tetramethylcyclotetrasilazane {[Me(H)SiNH] 4, TCS}. The IR and 1H NMR spectra of ISP indicate that the relative amounts of the allyl groups decrease slightly in comparison with those of AE-alane, suggesting that hydrosilylation occurs partially. TG analysis up to 900 °C reveals that the ceramic yield of ISP is 83.1 mass%. It is suggested that the high ceramic yield can be ascribed to cross-linking reactions occurring during pyrolysis. Possible reactions during pyrolysis are hydrosilylation, polymerization of the C=C bonds in the allyl groups and dehydrocoupling among the SiH groups, NH groups and AlH groups in ISP. The pyrolyzed residue at 1700 °C contains crystalline AIN, 2H-SiC, β-SiC and β-Si3N4 and amorphous carbon, as revealed by solid-state nuclear magnetic resonance (NMR) spectroscopy, Raman spectroscopy and X-ray diffraction (XRD) analysis.

    AB - An iminoalane-silazane polymer (ISP), an Al-Si-N-C precursor, has been synthesized via Ptcatalyzed hydrosilylation between poly(allyl iminoalane-co-ethyl iminoalane) ([HAlN(allyl)]m[HAlN (ethyl)] n, AE-alane) and l,3,5,7-tetrahydro-1,3,5,7-tetramethylcyclotetrasilazane {[Me(H)SiNH] 4, TCS}. The IR and 1H NMR spectra of ISP indicate that the relative amounts of the allyl groups decrease slightly in comparison with those of AE-alane, suggesting that hydrosilylation occurs partially. TG analysis up to 900 °C reveals that the ceramic yield of ISP is 83.1 mass%. It is suggested that the high ceramic yield can be ascribed to cross-linking reactions occurring during pyrolysis. Possible reactions during pyrolysis are hydrosilylation, polymerization of the C=C bonds in the allyl groups and dehydrocoupling among the SiH groups, NH groups and AlH groups in ISP. The pyrolyzed residue at 1700 °C contains crystalline AIN, 2H-SiC, β-SiC and β-Si3N4 and amorphous carbon, as revealed by solid-state nuclear magnetic resonance (NMR) spectroscopy, Raman spectroscopy and X-ray diffraction (XRD) analysis.

    KW - Aluminum nitride

    KW - Ceramic-based composites

    KW - Hydrosilylation

    KW - Precursor

    KW - Pyrolysis

    KW - Silicon carbide

    KW - Solid-state nuclear magnetic resonance (NMR)

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    U2 - 10.1002/aoc.1079

    DO - 10.1002/aoc.1079

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    JO - Applied Organometallic Chemistry

    JF - Applied Organometallic Chemistry

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