Supported metallocene catalysis for in situ synthesis of high energy density metal oxide nanocomposites

Neng Guo; Sara A. DiBenedetto; Do Kyun Kwon; Lian Wang; Matthew T. Russell; Michael T. Lanagan; Antonio Facchetti; Tobin J. Marks

doi:10.1021/ja066965l

Supported metallocene catalysis for in situ synthesis of high energy density metal oxide nanocomposites

Neng Guo, Sara A. DiBenedetto, Do Kyun Kwon, Lian Wang, Matthew T. Russell, Michael T. Lanagan^*, Antonio Facchetti, Tobin J. Marks

^*Corresponding author for this work

Chemistry

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

110 Scopus citations

Abstract

The 0-3 metal oxide-isotactic polypropylene nanocomposites are synthesized via in situ propylene polymerization using the C₂-symmetric metallocene catalyst dichloro[rac-ethylenebisindenyl]zirconium(IV) (EBIZrCl₂) immobilized on methylaluminoxane (MAO)-treated barium titanate (BaTiO₃) or titanium dioxide (TiO₂) nanoparticles. The composite materials are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and ¹³C nuclear magnetic resonance (NMR) spectroscopy. It is shown that the nanoparticles are homogeneously dispersed in the polyolefin matrices. Electrical measurements reveal nanocomposite leakage current densities of _∼10^-6 to 10^-9 A/cm², permittivities as high as 6.1, and breakdown strengths of ∼4 MV/cm. Energy densities are estimated to be as high as 9.4 J/cm³.

Original language	English (US)
Pages (from-to)	766-767
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	129
Issue number	4
DOIs	https://doi.org/10.1021/ja066965l
State	Published - Jan 31 2007

ASJC Scopus subject areas

General Chemistry
Biochemistry
Catalysis
Colloid and Surface Chemistry

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@article{feee82c5bf95433d8832dd3b02d7248e,

title = "Supported metallocene catalysis for in situ synthesis of high energy density metal oxide nanocomposites",

abstract = "The 0-3 metal oxide-isotactic polypropylene nanocomposites are synthesized via in situ propylene polymerization using the C2-symmetric metallocene catalyst dichloro[rac-ethylenebisindenyl]zirconium(IV) (EBIZrCl2) immobilized on methylaluminoxane (MAO)-treated barium titanate (BaTiO3) or titanium dioxide (TiO2) nanoparticles. The composite materials are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and 13C nuclear magnetic resonance (NMR) spectroscopy. It is shown that the nanoparticles are homogeneously dispersed in the polyolefin matrices. Electrical measurements reveal nanocomposite leakage current densities of ∼10-6 to 10-9 A/cm2, permittivities as high as 6.1, and breakdown strengths of ∼4 MV/cm. Energy densities are estimated to be as high as 9.4 J/cm3.",

author = "Neng Guo and DiBenedetto, {Sara A.} and Kwon, {Do Kyun} and Lian Wang and Russell, {Matthew T.} and Lanagan, {Michael T.} and Antonio Facchetti and Marks, {Tobin J.}",

note = "Funding Information: Funded by grants from Centocor, Inc, Malvern, Pa, and Eli Lilly and Company, Indianapolis, Ind. ",

year = "2007",

month = jan,

day = "31",

doi = "10.1021/ja066965l",

language = "English (US)",

volume = "129",

pages = "766--767",

journal = "Journal of the American Chemical Society",

issn = "0002-7863",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Supported metallocene catalysis for in situ synthesis of high energy density metal oxide nanocomposites

AU - Guo, Neng

AU - DiBenedetto, Sara A.

AU - Kwon, Do Kyun

AU - Wang, Lian

AU - Russell, Matthew T.

AU - Lanagan, Michael T.

AU - Facchetti, Antonio

AU - Marks, Tobin J.

N1 - Funding Information: Funded by grants from Centocor, Inc, Malvern, Pa, and Eli Lilly and Company, Indianapolis, Ind.

PY - 2007/1/31

Y1 - 2007/1/31

N2 - The 0-3 metal oxide-isotactic polypropylene nanocomposites are synthesized via in situ propylene polymerization using the C2-symmetric metallocene catalyst dichloro[rac-ethylenebisindenyl]zirconium(IV) (EBIZrCl2) immobilized on methylaluminoxane (MAO)-treated barium titanate (BaTiO3) or titanium dioxide (TiO2) nanoparticles. The composite materials are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and 13C nuclear magnetic resonance (NMR) spectroscopy. It is shown that the nanoparticles are homogeneously dispersed in the polyolefin matrices. Electrical measurements reveal nanocomposite leakage current densities of ∼10-6 to 10-9 A/cm2, permittivities as high as 6.1, and breakdown strengths of ∼4 MV/cm. Energy densities are estimated to be as high as 9.4 J/cm3.

AB - The 0-3 metal oxide-isotactic polypropylene nanocomposites are synthesized via in situ propylene polymerization using the C2-symmetric metallocene catalyst dichloro[rac-ethylenebisindenyl]zirconium(IV) (EBIZrCl2) immobilized on methylaluminoxane (MAO)-treated barium titanate (BaTiO3) or titanium dioxide (TiO2) nanoparticles. The composite materials are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and 13C nuclear magnetic resonance (NMR) spectroscopy. It is shown that the nanoparticles are homogeneously dispersed in the polyolefin matrices. Electrical measurements reveal nanocomposite leakage current densities of ∼10-6 to 10-9 A/cm2, permittivities as high as 6.1, and breakdown strengths of ∼4 MV/cm. Energy densities are estimated to be as high as 9.4 J/cm3.

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DO - 10.1021/ja066965l

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AN - SCOPUS:33846593552

SN - 0002-7863

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JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 4

ER -

Supported metallocene catalysis for in situ synthesis of high energy density metal oxide nanocomposites

Abstract

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