کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1442194 | 1509431 | 2011 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A series of water soluble RE(III) complexes: Synthesis, characterization, photophysical property and sensing activity towards Cr(III)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A series of water soluble RE(III) complexes: Synthesis, characterization, photophysical property and sensing activity towards Cr(III) A series of water soluble RE(III) complexes: Synthesis, characterization, photophysical property and sensing activity towards Cr(III)](/preview/png/1442194.png)
چکیده انگلیسی
In this paper, four water soluble rare-earth(III) fluorescent chemosensors, Na3RE(PDA)3 (PDA = pyridine-2,6-dicarboxylic acid, and RE = Sm, Eu, Tb, Dy), are synthesized and characterized. Their excitation and emission spectra, fluorescence responses towards Cr(III), quenching mechanism, oxygen and thermal sensitivity of the complexes are systemically studied. The emission intensity and the excited state lifetimes of the four complexes decrease with increasing concentration of trivalent chromium (Cr(III)). Their sensing behavior towards Cr(III) is investigated by fluorescence spectroscopy. Results suggest that Na3Dy(PDA)3 exhibits highest sensitivity and linear spectral response towards Cr(III) (Stern-Volmer constant = 0.461 Ã 107 L/mol, linearity = 0.996). It is note worthy that oxygen has little effect on the emission of Na3RE(PDA)3 complexes. These important advantages make themselves promising candidates to be utilized in actual applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Synthetic Metals - Volume 161, Issues 11â12, June 2011, Pages 1022-1028
Journal: Synthetic Metals - Volume 161, Issues 11â12, June 2011, Pages 1022-1028
نویسندگان
Hu Xiaojie,