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Temperature-induced oligomerization of polycyclic aromatic hydrocarbons at ambient and high pressures.

ABSTRACT: Temperature-induced oligomerization of polycyclic aromatic hydrocarbons (PAHs) was found at 500-773?K and ambient and high (3.5?GPa) pressures. The most intensive oligomerization at 1?bar and 3.5?GPa occurs at 740-823?K. PAH carbonization at high pressure is the final stage of oligomerization and occurs as a result of sequential oligomerization and polymerization of the starting material, caused by overlapping of ?-orbitals, a decrease of intermolecular distances, and finally the dehydrogenation and polycondensation of benzene rings. Being important for building blocks of life, PAHs and their oligomers can be formed in the interior of the terrestrial planets with radii less than 2270?km.

SUBMITTER: Chanyshev AD

PROVIDER: S-EPMC5554131 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature

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Temperature-induced oligomerization of polycyclic aromatic hydrocarbons at ambient and high pressures.

Chanyshev Artem D AD Litasov Konstantin D KD Furukawa Yoshihiro Y Kokh Konstantin A KA Shatskiy Anton F AF

Scientific reports 20170811 1

Temperature-induced oligomerization of polycyclic aromatic hydrocarbons (PAHs) was found at 500-773 K and ambient and high (3.5 GPa) pressures. The most intensive oligomerization at 1 bar and 3.5 GPa occurs at 740-823 K. PAH carbonization at high pressure is the final stage of oligomerization and occurs as a result of sequential oligomerization and polymerization of the starting material, caused by overlapping of π-orbitals, a decrease of intermolecular distances, and finally the dehydrogenation ...[more]

PMID: 28801612

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