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Open Access Fusing Treatment of Pentacenes: Toward Giant Graphene-Like Molecule

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Abstract:

To synthesize large-size polycyclic aromatic hydrocarbons that will be treated as model graphene material, we tried to fuse pentacenes at high temperatures under vacuum. Using mass spectroscopy and elemental analysis, we found that the sample recovered from the fusing reaction included a considerable number of dimers of pentacenes, the main component of which was peripentacene. We investigated the dimer phase by spectroscopic measurements such as X-ray diffraction (XRD), Raman scattering and infrared absorption (FT-IR). In addition, we compared the observed electronic spectroscopic data of the dimer phase and the partial electron density of states of peripentacene derived from the first principle calculations. The observed spectra were well reproduced by the calculations.

Keywords: DENSITY FUNCTIONAL THEORY CALCULATION; GRAPHENE; INFRARED ABSORPTION SPECTROSCOPY; MASS SPECTROMETRY; PENTACENE; PERIPENTACENE; POLYCYCLIC AROMATIC HYDROCARBON; RAMAN SPECTROSCOPY; X-RAY EMISSION SPECTROSCOPY; X-RAY PHOTOELECTRON SPECTROSCOPY

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/mex.2011.1005

Publication date: March 1, 2011

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  • Materials Express is a peer-reviewed multidisciplinary journal reporting emerging researches on materials science, engineering, technology and biology. Cutting-edge researches on the synthesis, characterization, properties, and applications of a very wide range of materials are covered for broad readership; from physical sciences to life sciences. In particular, the journal aims to report advanced materials with interesting electronic, magnetic, optical, mechanical and catalytic properties for industrial applications.
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