کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5404408 1505933 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ion exchange and luminescence of Eu3+ in Nafion membranes
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Ion exchange and luminescence of Eu3+ in Nafion membranes
چکیده انگلیسی
Dehydration of Nafion perfluorosulphonic membranes at 110 °C results in a significant reduction of their void space volume, the accessibility of sulphonic groups and the total exchange capacity towards Eu3+ cations. Nevertheless, the ion exchange sorption of Eu3+ takes place in accordance with stoichiometric ratio [-SO3H]/[Eu3+]=3. The membranes thermal pretreatment also affects noticeably the spectroscopic features of the fastened Eu3+ ions, such as the relationship between the intensities of the hypersensitive 5D0→7F2 and magnetic dipolar 5D0→7F1 transitions, the excited state life time, as well as the luminescence quenching in the course of water adsorption.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 116, Issues 1–2, January–February 2006, Pages 127-131
نویسندگان
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