International Journal of Virology and Parasitology

Full Length Research Paper

Photochemistry and cyclic voltammetry of N, N-bis(2,5-di-tert-butylphenyl) – 3,4,9,10 perylenebis (dicarboximide) (DBPI)

E.  H. El-Mossalamy^a,b, L. M. Al-Harbi^a, A. Y. Obaid^a, S.A. El-Daly^a, A. O. Al- Youbi^a, A.M. Asiri^a, M. El-Batouti^c and A. A. Al-Owais^d

^aChemistry Department Faculty of Science King Abdulaziz University P.O. Box. 80203, 21589-Saudi Arabia.

^a,bChemistry Department, Faculty of Science, Benha University, Benha Egypt.

^cChemistry Department, Faculty of Science, Alexandria University, Egypt^d

Accepted 17 October, 2013

Abstract

The titled dye of DBPI give amplified spontaneous emission (ASE) with maximum at 580 nm upon pumping by nitrogen laser (λex_. =337.1 nm). The ground state absorption cross section (σ_A) and emission cross section (σ_E) as well as effective emission cross section(σ*_E) have been determined. The electronic absorption spectra of DBPI were measured in ethanol and tetrahydrofuran at room and low temperature. DBPI displays molecular aggregation in water. The photochemical reactivity of DBPI was also studied in carbon tetrachloride upon irradiation with 525 nm light. Cyclic voltammetry of DBPI dye was also studied in different solvents at different scan rates. Cyclic voltammograms for reduction of DBPI gives two reversible peaks corresponding to radical anion and dianion formation. The oxidation of DBPI dye give one reversible oxidation peak at 1.4 volt corresponding to radical cation formation.

Keywords: Perylene derivative, amplified spontaneous emission, molecular aggregation, cyclic voltammetry.