کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1787432 1023442 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study of glucose oxidase-l-α-lecithin Langmuir film formation on air-water interface
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Study of glucose oxidase-l-α-lecithin Langmuir film formation on air-water interface
چکیده انگلیسی
The present paper describes the formation of glucose oxidase (GOx)-l-α-lecithin Langmuir film on air-water interface by spreading GOx solution directly onto subphase covered with layer of lecithin. The optimum experiment conditions were obtained according to the experimental results. Two phase transition processes were observed under surface pressure ranges of 8.0-11.0 mN/m and 15.0-30.0 mN/m, which represented the movement of GOx molecules under the lecithin layer and the reorientation of GOx molecules in the lecithin layer and/or expulsion of GOx molecules from the lecithin layer, respectively. The forces of GOx molecules that interacted with the lecithin layer were hydrogen bonding and hydrophobic force. An atomic force microscopy image of GOx-lecithin film deposited on Au (1 1 1) surface in optimal conditions gives evidence of well-ordered GOx molecules in the lecithin layer. As a target of this research, this work provides a new way to prepare biomimetic film and design glucose biosensors in future.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 7, Issue 5, July 2007, Pages 490-495
نویسندگان
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