Cyclic voltammetric study of redox-active surfactant by hydrogel-modified electrode |
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| Institution: | 1. Department of Chemistry, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102, Japan;2. Department of Chemistry, Yokohama National University, 156 Tokiwadai, Hodogaya-ku, Yokohama 240, Japan;1. Aerobiology, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland 21702;2. Aerobiology, Ke’aki Technologies, Frederick, Maryland 21704;3. Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, Kansas 66047;4. Aerobiology, Clinical Research Management, Frederick, Maryland 21701;5. Department of Chemical & Petroleum Engineering, The University of Kansas, Lawrence, Kansas 66045;1. Department of Thoracic Oncology, National Kyushu Cancer Center, Japan;2. Cancer Biostatistics Laboratory, Clinical Research Institute, National Kyushu Cancer Center, Japan;3. Division of Thoracic Oncology, Shizuoka Cancer Center, Japan;4. Third Department of Internal Medicine, Wakayama Medical University, Japan;1. Department of Chemistry, The University of Western Ontario, London, ON N6A 5B7, Canada;2. Department of Chemistry, Queen''s University, Kingston, ON K7L 3N6, Canada |
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| Abstract: | The dissolved states of redox-active non-ionic surfactant (FPEG) in the swollen state of N-isopropyl acrylamide (NIPA) hydrogel have been studied by using a gel-modified electrode. The pronounced decrease in the peak current and the negative shift in the formal potential of CV at the gel-modified electrode, as compared with the normal GC electrode, was observed in the micelle-solution; this indicates that the diffusive FPEG molecules which form the micelle hardly penetrate into the NIPA gel. This result suggests that there exists an interaction between FPEG molecules and the NIPA gel in the vicinity of the surface of the NIPA gel in the micelle-solution. However, this also indicates that a small amount of FPEG molecules which can form micelles exist in the NIPA gel. |
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