| Autor: |
Chang Wang, Bing Yan |
| Předmět: |
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| Zdroj: |
Journal of Fluorescence; May2011, Vol. 21 Issue 3, p1239-1247, 9p, 1 Black and White Photograph, 1 Diagram, 1 Chart, 5 Graphs |
| Abstrakt: |
The molecular linkage (phenSi) from functionalized 5-amino-1,10-phenanthroline (PhenNH) by 3-(triethoxysilyl)-propyl isocyanate (TESPIC) is to construct the rare earth (Sm, Eu, Tb) center covalently immobilized in the hybrid xerogels of Si-O-B through the cohydrolysis and copolycondensation process between different alkoxide precursors of them (tetraethoxysilane (TEOS), tri-n-butylborate (TBB)). NMR, FTIR and ultraviolet absorption are measured to confirm the obtained materials. X-ray diffraction patterns revealed the hybrid materials are amorphous. Scanning electronic microscopy images show the stripe microstructure without phase separation phenomenon in the obtained hybrid materials. The covalently bonded Si-O-B hybrid xerogel presents the similar photoluminescent behavior to the pure Si-O-Si hybrid xerogels, which indicates that Si-O-B hybrid xerogel is a suitable system for the luminescence of RE. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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