Novel 2-naphthol luminophors for optoelectronics

• Published in: Applied physics. A, Materials science & processing Vol. 125; no. 10; pp. 1 - 6
• Main Authors: Mane, K. G., Nagore, P. B., Pujari, S. R.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.10.2019; Springer Nature B.V
• Subjects: Applied physics; Characterization and Evaluation of Materials; Condensed Matter Physics; Electrochemical analysis; Energy levels; Fluorescence; Fluorimetry; Machines; Manufacturing; Materials science; Molecular orbitals; Nanotechnology; Naphthol; Optical and Electronic Materials; Optical properties; Optoelectronics; Physics; Physics and Astronomy; Processes; Stability analysis; Surfaces and Interfaces; Thermal stability; Thin Films
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-019-3024-8

A new class of 2-naphthol luminophors doped with varying amounts of pyrene were prepared by applying standard solid-state reaction method to sight new luminophors which emit at a higher wavelength. The optical and electrochemical properties of prepared luminophors were studied by fluorimetry and cyclic voltammetry technique, respectively. The fluorescence spectrum of doped 2-naphthol showed broad fluorescence band at maximum wavelength 450 nm for 1 × 10 –1  mol pyrene per mole 2-naphthol. The shifted broad spectra confirmed the exciplex formation between 2-naphthol and pyrene in the excitation state. On the basis of electrochemical data, energy levels of HOMO and LUMO were obtained for the prepared luminophors. The observed values fit between 5.70–5.72 eV and 3.02–3.09 eV, respectively. Their thermal stability was studied by TGA–DSC analysis. The SEM images evidenced crystal size of ~ 115 nm. Thus, the overall study proposes that the prepared novel luminophors are useful in optoelectronics.