Oligothiophenes in general and terthiophenes in particular, are readily accessible organic chromophores with interesting electronic properties. The stiff skeleton of oligothiophenes and the presence of the sulfur atom generate a stable π-conjugated chain, which can interact through multiple π-π stacking forces with the sp2 graphene lattice.
In this frame, the ease of oligothiophenes chemical manipulation allows the preparation of oligothiophene-graphene ensembles showing enhanced solubility in organic solvents. The latter is justified due to the insertion of alkyl groups at 3' and 4' position of the thiophenes ring. Herein, the preparation of oligothiophene-graphene ensembles will be presented, followed by their full characterization through Raman and IR spectroscopy, TEM imaging and TGA analysis. Notably, our first data from the newly formed materials, based on electronic absorption, photoluminescence and electrochemistry, indicate the interaction of the organic units and the carbon allotrope under light irradiation.
Partial financial support from GSRT/NSRF 2007-2013 through action “Postdoctoral support” project GRAPHCELL PE5(2126) is acknowledged.