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Professore di Economia Politica
Prorettore Delegato per la ricerca scientifica, i rapporti istituzionali e l’innovazione

Blog personale: http://francescopigliaru.blogspot.com

Titolo: Effects of substitution and functionalization on the electronic, optical, and transport properties of polycyclic aromatic hydrocarbons
Autori: 
Data di pubblicazione: 2015
Abstract: The electronic and optical properties of some represenative molecules belonging to the PAHs family of interest for solid state applications have been studied within a (TD)DFT scheme. We focus in particular on Pentacene, Pyrene and two Dibenzochrysenes (angular and compact).For the isolated gas-phase molecules we performed all-electrons Density Functional Theory (DFT) and Time Dependent DFT (TDDFT) calculations with a localized Gaussian basis-set and the hybrid B3LYP exchange-correlation functional [1],[2]. Electron affinities, ionization energies, fundamental energy-gaps, optical absorption spectra, exciton binding energies, and reorganization energies for holes and electrons have been calculated and compared with the available experimental/theoretical data for the pure molecules and for the corresponding substituted ones. The substitutions under study comprehend perhalogenation as other possibilities (e.g. TIPS group or sulfur substitution) which have all an experimental counterpart. Possible consequences of our findings on the above mentioned electronic and optical properties with respect to applications and fundamental research will be discussed.
Handle: http://hdl.handle.net/11584/130011
Tipologia:4.2 Abstract in Atti di convegno

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