کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
180423 459380 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of external magnetic fields on electron transfer and ion pairing dynamics at ferrocenyl alkane thiol SAM/solution interfaces
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Effect of external magnetic fields on electron transfer and ion pairing dynamics at ferrocenyl alkane thiol SAM/solution interfaces
چکیده انگلیسی

The redox behavior of ferrocene alkane thiol self assembled monolayer modified electrodes in contact with aqueous perchlorate solutions both in the absence of and in the presence of an external magnetic field is examined using both electrochemical and gravimetric techniques The redox switching process involves an ET reaction involving the ferrocene/ferricinium redox transition coupled with an ion pairing step involving perchlorate ion. The voltammetric response recorded in the latter medium is irreversibly affected by the imposition of a static magnetic field of magnitude 0.5 T applied in a direction parallel to the electrode surface. The magnetic field dependence of the redox behavior is attributed to structural changes in the monolayer arising from double layer effects involving changes in the spatial distribution of perchlorate counterions at the monolayer/solution interface, brought about by local convective stirring arising from the B field generated magnetohydrodynamic Lorenz body force.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochemistry Communications - Volume 12, Issue 11, November 2010, Pages 1527–1530
نویسندگان
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