Novel Donor-Acceptor Based 2-Naphthol Luminophors as Hole-Transporting Materials for Optoelectronics

Pyrene-perylene (Py-Pery) doped 2-naphthol (2-NP) luminophors (Py-Pery/2-NP) were prepared by conventional solid state reaction method. Excitation energy transfer and electrical properties were studied by fluorimetry and cyclic voltametric (CV) analysis respectively.2-NP acts as an good light emitting matrix. The effect of the donor emission was perceived by changing the dopant and dopant concentrations; this showed that Py-Pery in 2-NP matrix exhibits green emission in the wavelength region 480–550 nm, peaking at 510 nm. Structural properties and thermal stability was studied by XRD, SEM and TGA-DSC. The HOMO and LUMO energy levels were in the range from 5.46–5.48 eV and 2.76–2.77 eV, respectively. An electrochemical band gap estimated was within the range of 2.68–2.72 eV. This study reveals that 2-NP luminophors can be used as a hole-transporting materials used in optoelectronics.