Abstract
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 (µe) and ground-state dipole moments (µg) 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 (R0) and the evaluation of the energy transfer rate constant (kET). The theoretical absorption spectra of the PBBO compound are calculated using Density function theory (DFT) calculations. In addition, the energy gap (Eg), bond length, and IR spectrum are carried out too.
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