کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6615084 459626 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The peak effect of the photocurrent on the concentration of electron mediator (para-benzoquinone) in thylakoids
ترجمه فارسی عنوان
حداکثر اثر جریان فوتوتری در غلظت واسطه الکترون (پارا بنزووینون) در تیلاکوید
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
This work investigates the photocurrent harvested from the isolated thylakoids. Several tests have been used to verify that the photocurrent measured is indeed from the photosynthesis on the thylakoid membranes. The photocurrent has a linear dependence on light intensity; the photocurrent shares similar frequency dependence as that of absorption spectrum of chlorophyll; the photocurrent decreases or disappears with the application of 3-(3′,4′-dichlorophenyl)-1,1-dimethylurea as an inhibitor. The new finding of this report is the observation of a peak in the photocurrent as a function of the concentration CBQ of electron mediator para-benzoquinone (p-BQ). It is found that the photocurrent measured increases at small CBQ, and a maximum current is obtained at CBQ ≈ 1.8-2 mM and decreases with further increase in CBQ. A simplistic model has been proposed to explain the peak. The effect of bias voltage applied between the electrodes on photocurrent is studied as well.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 113, 15 December 2013, Pages 603-608
نویسندگان
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