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

Auteur(s): Fabbiani Marco, Rouquette Jerome, Talbi Gael, Cambon Martine, Cambon Olivier, Santoro Mario, Konczewicz L., Contreras S., Haines Julien

(Article) Publié: Canadian Journal Of Chemistry, vol. 100 p.239-243 (2022)
Texte intégral en Openaccess : openaccess

Ref HAL: hal-03628395_v1
DOI: 10.1139/cjc-2021-0175
WoS: WOS:000767175100010
Exporter : BibTex | endNote

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.