Diffusion-controlled currents in viscous solutions of polyethylene glycols

Material type: 文書・図像類

Author: AOKI, Koichiほか

Publisher: Elsevier B.V.

Publication date: 2009-09

Material Format: Digital

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Note (General)：: Voltammetry of ferrocenyl derivative, known as a reversible redox species, was made in viscous solutions of polyethylene glycols in order to find effe...

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Material Type: 文書・図像類
Title: Diffusion-controlled currents in viscous solutions of polyethylene glycols
Author/Editor: AOKI, Koichi
GUO, Yi
CHEN, Jingyuan
Author Heading: AOKI, Koichi
GUO, Yi
CHEN, Jingyuan
Publication, Distribution, etc.: Elsevier B.V.
Publication Date: 2009-09
Publication Date (W3CDTF): 2009-09
Periodical title: Journal of Electroanalytical Chemistry
No. or year of volume/issue: 629 1-2
Volume: 629
Issue: 1-2
Pages: 73-77
Text Language Code: eng
Subject Heading: voltammetry in viscous solutions
polyethylene glycols
Stokes-Einstein equation
memory diffusion
fast potential scan
Target Audience: 一般
Note (General): Voltammetry of ferrocenyl derivative, known as a reversible redox species, was made in viscous solutions of polyethylene glycols in order to find effects of the viscosity on voltammograms, especially deviation from the ordinary diffusion-controlled behavior. Voltammetric peak currents at high scan rates and in high viscous solutions were deviated lower from the proportionality to the square-root of the scan rates. The deviation could not be explained in terms of participation of sluggish electron transfer reactions or solution resistance, because the peak potential difference corrected by the solution resistance were close to 60 mV. The deviation was similar to the memory effect of diffusion. Diffusion coefficients and the solution resistance were evaluated from the proportionality of the peak current and peak potential shits, respectively. These values obeyed Stokes-Einstein equation for the viscosity less than 0.3 Pa s. Dilatancy was observed at viscosity more than 0.3 Pa s.
Source: https://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=22285&item_no=1&attribute_id=22&file_no=1
https://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=22285&item_no=1&attribute_id=22&file_no=1
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ