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Synthesis of a polyphenylacetylene/silica nanotube composite under high-temperature, high-pressure conditions

Abstract : Phenylacetylene was inserted and polymerized in 5 nm diameter silica nanotubes under high pressure – high temperature conditions of 0.5 GPa and 437 K in an inert gas. The resulting nanocomposite was characterized by infrared and Raman spectroscopy and scanning and transmission electron microscopy. The vibrational spectroscopic data confirmed the formation of π-conjugated polyphenylacetylene and the absence of crystallization of the amorphous nanotubes. Scanning transmission electron microscopy coupled with energy dispersive X-ray spectroscopy, STEM-EDX, measurements confirmed the insertion of the polymer in the channels of the nanotubes and electron diffraction confirmed the amorphous nature of both the polymer and the host SiO 2 nanotubes. The obtained nanocomposite is a candidate material for gas sensing applications.
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Submitted on : Wednesday, June 1, 2022 - 10:35:29 AM
Last modification on : Friday, August 5, 2022 - 10:59:30 AM

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Marco Fabbiani, Jerome Rouquette, Gael Talbi, Martine Cambon, Olivier Cambon, et al.. Synthesis of a polyphenylacetylene/silica nanotube composite under high-temperature, high-pressure conditions. Canadian Journal of Chemistry, NRC Research Press, 2022, 100 (3), pp.239-243. ⟨10.1139/cjc-2021-0175⟩. ⟨hal-03628395⟩

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