| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1625076 | Journal of Alloys and Compounds | 2008 | 4 Pages |
Abstract
Organic-inorganic hybrids formed by polyether-based chains grafted to both ends to a siliceous backbone through urea cross-linkages (NHC(O)NH), named di-ureasil, have been used as host for incorporation of Eu3+ in the form of EuCl3. The bulks and the thin films, both optically transparent, were characterized by excitation, absorption and emission spectroscopy. Photoluminescence results point out that the Eu3+ ions occupy, at least, two distinct local environments. Besides, the processing method (thin films or bulks) has influence on the energy levels of the hybrid host probably due to the lower degree of organization of the thin films structure.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
E. Pecoraro, R.A. Sá Ferreira, C. Molina, S.J.L. Ribeiro, Y. Messsaddeq, L.D. Carlos,