Scanning electrochemical microscopy. 38. Application of SECM to the study of charge transfer through bilayer lipid membranes |
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Authors: | Tsionsky M Zhou J Amemiya S Fan F R Bard A J Dryfe R A |
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Affiliation: | Department of Chemistry and Biochemistry, University of Texas at Austin 78712, USA. |
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Abstract: | The use of the scanning electrochemical microscope (SECM) to probe the kinetics of charge-transfer processes at bilayer lipid membranes (BLM) is presented. Analysis of the SECM tip response demonstrates that an unmodified BLM behaves as an insulator, whereas a BLM doped with iodine shows some positive feedback. The SECM technique thus allows one to probe processes at a BLM and determine the kinetics of the charge-transfer process. The SECM can also be used to determine the shape of the BLM. |
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