کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5403634 | 1392763 | 2007 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Luminescence properties of Eu3+β-diketonates incorporated in cubic mesoporous silica
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Luminescent materials have been prepared by wet impregnation of Europium (III) dibenzoylmethane complexes in either non-silylated or silylated mesoporous MCM-48 silica. Silylation and incorporation of the Eu (III) complex were confirmed by Nuclear Magnetic Resonance, N2-sorption, X-ray diffraction and Infrared spectroscopy. The luminescence properties were investigated at room and high temperatures up to 200 °C. Information on host-guest interactions were collected by analyzing the optical characteristics of the Eu (III) ions in the different media. In particular, the intensity parameter Ω2 is confirmed to be a useful spectroscopic probe for Eu (III) first coordination shell interaction. The role of the O2â-Eu3+ charge transfer band and the impact of the silylation on the luminescence properties at room and high temperatures is demonstrated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 124, Issue 1, May 2007, Pages 15-22
Journal: Journal of Luminescence - Volume 124, Issue 1, May 2007, Pages 15-22
نویسندگان
Qingguo Meng, Philippe Boutinaud, Hongjie Zhang, Rachid Mahiou,