کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5403244 | 1392755 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ligand-sensitized fluorescence of Eu3+ using naphthalene carboxylic acids as ligands
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
Fluorescence enhancement of Eu3+ in its complexes with 1-naphthoic acid (NA) and 2,6-naphthalenedicarboxylic acid (NDA) has been studied. These ligands enhance the fluorescence of Eu3+ by about two to three orders of magnitude. The fluorescence of Eu3+ in these complexes is further enhanced by more than two orders of magnitude when these complexes are treated with trioctylphosphineoxide (TOPO) and a surfactant. The enhancement due to TOPO is accompanied by an increase in the lifetimes of Eu3+ emission in these complexes, compared with the emission in uncomplexed Eu3+. The fluorescence of Eu3+ in the Eu3+-NDA-TOPO/surfactant complex is further enhanced by the addition of Tb3+, leading to the possibility of detecting Eu3+ at levels of 10â10Â M. This ligand gives one of the best limits of detection for Eu3+ of all the carboxylic acid ligands that we have studied thus far.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 128, Issue 8, August 2008, Pages 1255-1261
Journal: Journal of Luminescence - Volume 128, Issue 8, August 2008, Pages 1255-1261
نویسندگان
S. Maji, K.S. Viswanathan,