Measurements of redox kinetics of adsorbed azobenzene by “a quasireversible maximum” in square-wave voltammetry

✍ Scribed by Šebojka Komorsky-Lovrić; Milivoj Lovrić

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 369 KB
• Volume: 40
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(95)00097-x

✦ Synopsis

The standard redox reaction rate constants of azobenzene adsorbed to the mercury electrode are k, = 350 + 25 s-' in the acidic perchlorate medium (pH 2) and k, = 175 f 2Os-' in the acetate buffer pH 4.7. Under the influence of 0.2X, 0.5% and 1% acetonitrile in these electrolytes, the rate constants are reduced to 265 + 5s-', 160 k 20~s' and 77 k loss', at pH 2, and to 150 + 5s-' and 56 + 13~~' at pH 4.7.