Pressure-induced irreversible amorphization of naphthalene and nitrogen-containing heteroaromatic compounds at room temperature

Ayako Shinozaki,Takaya Nagai,Hiroyuki Kagi,Satoshi Nakano

doi:10.1016/j.cplett.2019.136921

Pressure-induced irreversible amorphization of naphthalene and nitrogen-containing heteroaromatic compounds at room temperature

Ayako Shinozaki, Takaya Nagai + Show 2 more

https://doi.org/10.1016/j.cplett.2019.136921

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Journal: Chemical physics letters	Publication Date: Nov 2, 2019
Citations: 2

Affiliation: Hokkaido University, The University of Tokyo, National Institute for Materials Science

#Sp2 Carbons #Nitrogen-containing Heteroaromatic Compounds + Show 8 more

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Abstract

Pressure-induced irreversible chemical reactions of naphthalene, 2,3-naphthyridine (2,3-Nap), and 1,5-naphthyridine (1,5-Nap) were observed after compression (>16–18 GPa) at room temperature. Regardless of the initial materials, amorphous products in which sp3 carbon was formed were obtained after the samples were recovered at ambient pressure. The X-ray photoelectron spectroscopy (XPS) of the product from naphthalene indicated that the carbon sp3/sp2 ratio was much lower than that of benzene nanothreads. Nitrogen remained in the amorphous products from 1,5-Nap and 2,3-Nap and bonded to both sp3 and sp2 carbons.

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