کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5403235 | 1392754 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Energy transfer and photoextinction from Ln3+ to Tb3+ and Eu3+ in aqueous chloride solutions
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Energy transfer and photoextinction from Ln3+ to Tb3+ and Eu3+ in aqueous chloride solutions were studied by absorption, emission and excitation spectra. The energy gaps below the luminescent terms of Gd3+, Tb3+ and Eu3+ are spanned by 10, 5 and 4 quanta, respectively, of the highest energy vibration in aqueous solution, and luminescence is observed in each case. This is not so for other Ln3+ where nonradiative deactivation dominates over luminescence. It was verified that only Gd3+ could transfer energy to Tb3+ and Eu3+ ions in aqueous or acid solutions. The ions Pr3+, Nd3+, Sm3+, Dy3+, Ho3+ and Er3+ exhibited strong competitive absorption at certain wavelengths, resulting in the photoextinction of Tb3+ and Eu3+ emission.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 128, Issue 11, November 2008, Pages 1846-1850
Journal: Journal of Luminescence - Volume 128, Issue 11, November 2008, Pages 1846-1850
نویسندگان
Jiwei Wang, Peter A. Tanner,