Novel Donor-Acceptor Based 4-Nitrophenol Luminophores as a Yellow-Orange Fluorescent Material for Optoelectronic Applications.

A new category of 4-nitrophenol (4-NP) luminophores, infused with varying amounts of Pyrene (Py), was synthesized using the standard solid-state reaction method to investigate novel luminophores that emit at longer wavelengths. Their optical and electrochemical properties were analyzed using fluorimetry and cyclic voltammetry techniques. The fluorescence spectrum of Py-doped 4-NP displayed a broad fluorescence band with a peak at 599 nm for a Py concentration of 1 × 10 mol, indicating exciplex formation between 4-NP and Py in the excited state.