RETRACTED ARTICLE: Optical, photo-physical and photo-stability characterizations of malachite green as a laser dye, combined with TD-DFT simulations

• Published in: Optical and quantum electronics 2024, Vol.56 (3), Article 377
• Main Authors: Ghazy, Ahmed R., Abotalb, Diana. F., Kenawy, El-Refaie, Ghazy, R., Abdel Gawad, Sayed A.
• Format: Article
• Language: English
• Subjects: Absorption cross sections; Absorption spectra; Characterization and Evaluation of Materials; Computer Communication Networks; Decay rate; Density functional theory; Dipole moments; Dyes; Electrical Engineering; Electron density; Emission analysis; Emission spectra; Energy gap; Fluorescence; Lasers; Malachite green; Optical Devices; Optical properties; Optics; Photonics; Physics; Physics and Astronomy; Refractivity
• ISSN: 0306-8919; 1572-817X
• DOI: 10.1007/s11082-023-05908-0

The optical properties of Malachite green (Mg) dye were examined experimentally, including absorption, optical energy gab, refractive index, dielectric constant, optical conductivity and emission spectra in various solvents. Additionally, several significant photophysical parameters were evaluated, including the extinction coefficient (ε), the energy yield of fluorescence (Ef), the length of attenuation Λ (λ), oscillator strength (f), quantum yield (Ø f ), fluorescence lifetime ( τ f ), decay rate radiative constant (kr), and the dipole moment (μ) in addition to absorption and emission cross-sections (σ a ) and (σ e ) respectively. Time Dependent Density function theory (TD-DFT) computations were used to generate the theoretical absorption spectra of the (Mg) compound. The energy gap (Eg), electron density, and electrostatic potential were also simulated.