Studies on spectro photophysical properties of PBBO-laser dye

Examine the effects of solvents of different polarities on the electronic absorption and fluorescence spectra of 2-(4-Biphenylyl)-6-phenylbenzoxazol (PBBO). The singlet state excited dipole moments (mu(e)) and ground-state dipole moments (mu(g)) were evaluated from the equations of Lippert-Mataga and Billot. The detected singlet state excited dipole moments were found to be larger than the ground-state ones. Moreover, the effect of silver nanoparticles on the emission spectrum of PBBO has been observed. The energy transfer between PBBO and some laser dyes will be studied in addition to some parameters, including the determination of the critical transfer distance (R (0) ) and the evaluation of the energy transfer rate constant (k(ET)). The theoretical absorption spectra of the PBBO compound are calculated using Density function theory (DFT) calculations. In addition, the energy gap (E-g), bond length, and IR spectrum are carried out too.(c) 2022 Elsevier B.V. All rights reserved.

Automated summary

This study examines the effects of solvents with different polarities on the electronic absorption and fluorescence spectra of PBBO, and evaluates the dipole moments of the excited and ground states. Results show that the dipole moments of the excited state are larger than those of the ground state. Additionally, the study observes the impact of silver nanoparticles on the emission spectrum of PBBO. Energy transfer between PBBO and laser dyes will be further investigated, along with the calculation of absorption spectra, energy gap, bond length, and IR spectrum using density function theory.