Abstract
Several perylene (Pery)-doped 2-naphthol (2-NP) (Pery/2-NP) luminophors were prepared using conventional solid-state reaction techniques. Energy transfer in the excited state was examined using fluorescence spectroscopy and cyclic voltammetry. Fluorescence studies revealed exciplex formation by Pery in the form of structureless and broad spectra at higher concentrations with monomer quenching of 2-NP; a broad green emission was observed in the range 500-650nm, peaking at 575nm. Structural properties and thermal stability were analyzed using X-ray diffraction, scanning electron microscopy and TGA-differential scanning calorimetry. Highest occupied molecular orbital and lowest unoccupied molecular orbital energy levels were observed in the range 5.56-5.61eV and 2.79-2.81eV, respectively with a 2.77-2.82eV band gap. The present study reveals these to be probable candidates for hole-transporting materials suitable in optoelectronics.
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