Voltammetry Osteryoung

Osteryoung J and Murphy M M 1991 Normal and reverse pulse voltammetry at small electrodes Microelectrodes Theory and Applications (Nate ASI Series E vol 197) ed M I Montenegro, M A Queiros and J L Daschbach (Dordrecht Kluwer)... 

Osteryoung J and O Dea J J 1986 Square wave voltammetry Electroanalytical Chemistry ed A J Bard (New York Dekker)... 

O Dea J, Wo]ciechowski M and Osteryoung J 1985 Square wave voltammetry at electrodes having a small dimension... 

One aspect that reflects the electronic configuration of fullerenes relates to the electrochemically induced reduction and oxidation processes in solution. In good agreement with the tlireefold degenerate LUMO, the redox chemistry of [60]fullerene, investigated primarily with cyclic voltammetry and Osteryoung square wave voltammetry, unravels six reversible, one-electron reduction steps with potentials that are equally separated from each other. The separation between any two successive reduction steps is -450 50 mV. The low reduction potential (only -0.44 V versus SCE) of the process, that corresponds to the generation of the rt-radical anion 131,109,110,111 and 1121, deserves special attention. 

Osteryoung, J. Pulse Voltammetry, /. Chem. Educ. 1983, 60, 296-298. Additional information on stripping voltammetry is available in the following text. 

Obtained by both cyclic (100 mV s-1) and square-wave (10 Hz, Osteryoung-type) voltammetry in acetonitrile solution containing 0.1 mol dm-3 BuJNBF4 as supporting electrolyte. Solutions were 1 x 10-3 mol dm-3 in compound with reference to an Ag/Ag+ electrode (330 10 mV vs SCE) at 21 1°G b Anodic shift of the reduction waves of [57] in the presence of 1.0 equiv of the respective cationic species added as their perchlorate or hexafluorophosphate salts. "Anodic shift in the presence of 2.0 equiv of the respective cations. The second reduction wave of [57] became obscure or disappeared in the presence of more than 1 equiv of the respective cations. 

Figure 41 Potential-time perturbation in Osteryoung Square Wave Voltammetry...

Osteryoung J, O Dea JJ (1986) Square-wave voltammetry. In Bard AJ (ed) Electroanalytical chemistry, vol 14. Marcel Dekker, New York, p209... 

In this solvent, using CV and Osteryoung square-wave voltammetry (OSWV) under high vacuum conditions at room temperature, Cgo displays a one-electron, chemically reversible oxidation wave at +1.26 V vs. Fc/Fc+. TBAPFe was used as the supporting electrolyte. Under the same conditions, the first one-electron oxidation of C70 occurs at +1.20 V, 60 mV more negative (easier to oxidize) than that of Cgo- Both oxidations are electrochemically quasireversible with A pp = 80 mV. In addition, a second oxidation wave is observed for C70 close to the limit of the solvent potential window at+1.75 V. However, this wave appears to be chemically irreversible (see Fig. 3) [36]. 

Osteryoung and coworkers [32, 33] optimized the square-wave voltammetry and... 

CAImHPFJ Multiwalled carbon nanotube Carbon microfiber N/A Dopamine 18 X 10- to 180 X 10-6 NR Osteryoung square wave voltammetry 36 S) S)... 

O Dea JJ, Osteryoung J, Osteryoung RA (1981) Theory of square wave voltammetry for kinetic systems. Anal Chem 53 695-701. 

O Dea JJ, Osteryoung JG (1993) Characterization of quasi-reversible surface processes by square-wave voltammetry. Anal Chem 65 3090-3097. 

Figure 8.1 Cyclic voltammetry (a) and Osteryoung square wave voltammetry (b) of Cgo (acetonitrile/toluene + 0.1 M ( -Bu)4NPF6), using a glassy carbon electrode (GCE) working and ferrocene/ferrocenium (Fc/Fc +) couple as an internal reference. Reprinted with Permission from Ref. 4. Copyright 1992 American Chemical Society.

A. Golcu, S.A. Ozkan, Electroanalytical determination of donepezil HC1 in tablets and human serum by differential pulse and Osteryoung square wave voltammetry at a glassy carbon electrode, Pharmazie 61 (2006) 760-765. 

Jan. 20, 1927, Cleveland, Ohio, USA - Aug. 10, 2004, Raleigh, NC, USA) Osteryoung received his bachelor s education at Ohio University and his Ph.D. at the University of Illinois. He was professor and Chairman of the Chemistry Department at Colorado State University, a professor at the State University of New York at Buffalo and research professor and Chair of the Department of Chemistry of North Carolina State University. He published about 225 original scientific papers, and was especially known for his papers on double potential step -> chronocoulometry, -> square-wave voltammetry, and room-temperature molten salt electrochemistry. He also initiated computer-controlled electrochemical measurements, which helped in developing and optimizing - pulse voltammetry. He served as an Associate Editor for the journal Analytical Chemistry. 

Osteryoung square-wave voltammetry — The protocol of square-wave voltammetry developed by - Osteryoung is based on a square-wave potential train with a frequency that for each forward potential pulse the DC electrode is stepped in the same direction by one increment, i.e., one step of the DC staircase ramp. 

Refs [i] Osteryoung J, O Dea JJ (1986) Square-wave voltammetry. In Bard A] (ed) Electroanalytical chemistry, vol. 14. Marcel Dekker, p 209 [ii] Bond AM (1980) Modern polarographic methods in analytical chemistry. Marcel Dekker, pp 391-399 [iii] LovricM (2002) In ScholzF (ed) Electroanalytical methods. Springer, Berlin, pp 111-136 [iv] Mirdeski V, Komorsky-Lovric S, Lovric M (2007) Square-wave voltammetry. In Scholz F (ed) Monographs in Electrochemistry. Springer, Berlin... 

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