Detalles de publicación
PP 013057
ON THE MOLAR EXTINCTION COEFFICIENTS OF THE ELECTRONIC ABSORPTION SPECTRA OF C60 AND C70 FULLERENES RADICAL CATION
[a] CNR–Istituto di Metodologie Chimiche, Area della Ricerca
di Montelibretti, Via Salaria Km 29,300, 00016,
Monterotondo, Scalo, Rome, Italy
[b] Actinium Chemical Research srl, Via Casilina 1626A, 00133
Rome, Italy
[c] Instituto de Astrofisica de Canarias, Via Lactea snc, Tenerife,
Canary Islands, Spain
[d] National Center for Astronomy, KACST, P.O. Box 6086,
Riyad 11442 Saudi Arabia
Fullerene C60 and C70 were discovered in 2010 by means of infrared spectroscopy in a series of astrophysical objects like for example
planetary and protoplanetary nebulae and reflection nebulae. These discoveries suggest that C60 and C70 must be widespread in the
interstellar medium and may contribute as neutral species or as radical cation (C60+• and C70+•) to the DIBs, the Diffuse Interstellar Bands
which are attributed to the electronic transitions of molecules and radicals. In this paper are reported the electronic absorption spectra of
both C60 and C70 and of their radical cations C60+• and C70+• together with the molar extinction coefficients of all the main absorption bands.
All these experimental data are key tools for the qualitative and quantitative search and recognition of these molecules and radicals in space
using electronic transitions rather than infrared transition. Furthermore, the electronic absorption bands and molar extinction coefficients of
hydrogenated and perdeuterated fullerenes (known as fulleranes) and higher fullerenes are reported.
planetary and protoplanetary nebulae and reflection nebulae. These discoveries suggest that C60 and C70 must be widespread in the
interstellar medium and may contribute as neutral species or as radical cation (C60+• and C70+•) to the DIBs, the Diffuse Interstellar Bands
which are attributed to the electronic transitions of molecules and radicals. In this paper are reported the electronic absorption spectra of
both C60 and C70 and of their radical cations C60+• and C70+• together with the molar extinction coefficients of all the main absorption bands.
All these experimental data are key tools for the qualitative and quantitative search and recognition of these molecules and radicals in space
using electronic transitions rather than infrared transition. Furthermore, the electronic absorption bands and molar extinction coefficients of
hydrogenated and perdeuterated fullerenes (known as fulleranes) and higher fullerenes are reported.