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Synthesis, Characterization and Electrical Conductance of Ferrocenylazobenzene

Hegde, Gurumurthy and Tagg, Tei and Siti Athirah, Mohamad Jamali and Hasiah, Salleh (2014) Synthesis, Characterization and Electrical Conductance of Ferrocenylazobenzene. Molecular Crystals and Liquid Crystals, 604 (1). pp. 142-150. ISSN 1542-1406 (print); 1563-5287 (online)

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Abstract

Ferrocenylazobenzene was synthesized by condensing an aminoazobenzene dye with ferrocenecarboxylic acid previously treated with oxalyl chloride. The compound displayed an anticipated chemically reversible one-electron oxidation process and gave a formal potential, E° = 0.65 V. In the UV-Vis region, the azo π-π* and n-π* transitions appeared at 355 and 460 nm respectively. On oxidation of the ferrocenyl moiety, the azo π-π* band was blue-shifted to 348 nm with an increase in intensity, while a new broad, lower energy absorption band assigned to the ligand-to-metal charge transfer appeared at 622 nm. The growth of this new band was concurrent with the bleaching of the metal-to-ligand charge transfer band which was largely obscured by the azo n-π* band at 460 nm. The compound in the form of thin film gave an average electrical conductivity of 0.239 ± 0.001 Scm−1 and a non-linear I-V curve with knee voltage at 2.3 V in dark condition.

Item Type: Article
Subjects: Q Science > QD Chemistry
Q Science > QC Physics
Faculty/Division: Faculty of Industrial Sciences And Technology
Depositing User: Dr. Gurumurthy Hegde
Date Deposited: 08 Jan 2015 08:55
Last Modified: 17 May 2018 05:59
URI: http://umpir.ump.edu.my/id/eprint/8078
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