Electrochemical Studies of 1,4-Bis[2-(2-pyridyl)-vinyl] Benzene and 1,4-Bis[2-(4-pyridyl) vinyl] Benzene Laser Dyes via Cyclic Voltammetry, Convolutive Voltammetry and Digital Simulation Methods
✍ Scribed by Samy A. EL-DALY; Ibrahim S EL-HALLAG; Ezeiny M EBEED; Mohamed M GHONEIM
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 129 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0256-7660
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✦ Synopsis
Abstract
Electrochemical properties of two diolefinic laser dyes namely 1,4‐bis[2‐(2‐pyridyl)‐vinyl] benzene (2PVB) and 1,4‐bis[2‐(4‐pyridyl) vinyl] benzene (4PVB**)** have been investigated using cyclic voltammetry and convolutive voltammetry combined with digital simulation at a platinum electrode in 0.1 mol/L tetrabutyl ammonium perchlorate (TBAP) in the two different solvents acetonitrile (CH~3~CN) and dimethylformamide (DMF). The species were reduced via consumption of two sequential electrons to form radical anion and dianion. In switching the potential to positive direction, the two compounds were oxidized by loss of one electron, which was followed by a fast isomerisation process. The electrode reaction pathway and the electrochemical parameters of the investigated compounds were determined using cyclic voltammetry. The extracted electrochemical parameters were verified and confirmed via digital simulation and convolutive voltammetry methods.