Optical, photo physical parameters and photo stability of 6-Substituted-1, 2, 4-Triazine mono glucosyl derivative to act as a laser dye in various solvents

Mahmoud E M Sakr; Maram T H Abou Kana; Ahmed H M Elwahy; Hamed M Kandel; Mohamed S Abdelwahed; Samy A El-Daly; El-Zeiny M Ebeid

doi:10.1016/j.saa.2020.118145

Optical, photo physical parameters and photo stability of 6-Substituted-1, 2, 4-Triazine mono glucosyl derivative to act as a laser dye in various solvents

Spectrochim Acta A Mol Biomol Spectrosc. 2020 May 5:232:118145. doi: 10.1016/j.saa.2020.118145. Epub 2020 Feb 10.

Authors

Mahmoud E M Sakr¹, Maram T H Abou Kana², Ahmed H M Elwahy³, Hamed M Kandel⁴, Mohamed S Abdelwahed⁵, Samy A El-Daly⁵, El-Zeiny M Ebeid⁶

Affiliations

¹ Laser Sciences and Interactions Department, National Institute of Laser-Enhanced Sciences (NILES), Cairo University, Giza, Egypt. Electronic address: m.sakr@niles.edu.eg.
² Laser Sciences and Interactions Department, National Institute of Laser-Enhanced Sciences (NILES), Cairo University, Giza, Egypt. Electronic address: mabou202@niles.edu.eg.
³ Chemistry Department, Faculty of Science, Cairo University, Egypt.
⁴ Laser Sciences and Interactions Department, National Institute of Laser-Enhanced Sciences (NILES), Cairo University, Giza, Egypt.
⁵ Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt.
⁶ Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt; Misr University for Science and Technology (MUST), 6th of October City, Egypt.

PMID: 32066064
DOI: 10.1016/j.saa.2020.118145

Abstract

The optical properties of a visible absorption range6-Substituted-1, 2, 4-Triazine mono glucosyl fluorescent derivative dye, such as absorption spectra, emission spectra in different solvents, were experimentally investigated. As well, some important photo physical parameters such as extinction coefficient (ε), cross-sections of the absorption (σ_a) and the emission (σ_e), quantum yield (ф_f), fluorescence lifetime, oscillator strength (f), the dipole moment (μ), decay rate radiative constant (k_r), energy yield of fluorescence (E_f) and the length of attenuation Λ (λ) were assessed. The ground-state (μ_g) and excited-state (μ_e) dipole moments by solvatochromic correlations method were reported. The dye amplified spontaneous emission (ASE) of 2 × 10^-4M with different input pumping energies of a continuous wave blue diode laser (λ = 450 nm) was studied. Photostability of dye was observed that was decreased to 53% of its initial energy by pumping with 100 mW of diode laser after exposure to 120 min.

Keywords: 1, 2, 4-Triazine mono glucosyl derivative; Fluorescence spectra; Optical properties; Photo physical properties; Photostability.