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Er3+-doped Polyether/siloxane Hybrid Materials for Optoelectronics

Published online by Cambridge University Press:  01 February 2011

S. C. Nunes ,
V. de Zea Bermudez ,
R. A. Sá Ferreira ,
L. D. Carlos ,
E. Morales  and
P. V. S. Marques
S. C. Nunes
Affiliation:
Departamento de Química and CQ-VR, Universidade de Trás-os-Montes e Alto Douro, 5001–911. Vila Real Codex, Portugal
V. de Zea Bermudez
Affiliation:
Departamento de Química and CQ-VR, Universidade de Trás-os-Montes e Alto Douro, 5001–911. Vila Real Codex, Portugal
R. A. Sá Ferreira
Affiliation:
Departamento de Física and CICECO, Universidade de Aveiro, 3810–193 Aveiro, Portugal
L. D. Carlos
Affiliation:
Departamento de Física and CICECO, Universidade de Aveiro, 3810–193 Aveiro, Portugal
E. Morales
Affiliation:
Instituto de Ciencia y Tecnología de Polímeros (CSIC), 28006 Madrid, Spain
P. V. S. Marques
Affiliation:
Departamento de Física, INESC-Faculdade de Ciências da Universidade do Porto, 4169–007 Porto, Portugal
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Abstract

The sol-gel method was employed to obtain poly(oxyethylene) (POE)/siloxane hybrids (di-ureasils) doped with erbium triflate (Er(CF3SO3)3). The host hybrid matrix employed is composed of a siliceous framework to which short POE chains are covalently bonded through urea linkages (-NH(C(=O)NH-). Xerogels with ∞ > n ≥ 5 (where n, salt composition, is the molar ratio of OCH2CH2 moieties per Er ion) were analyzed. Samples with n ≥ 20 are amorphous. Those with n > 20 are thermally stable up to about 325 °C. In the di-ureasils proposed, the Er ions are active at room temperature (RT). Concentration effects on the quenching of the 1.53 mm emission intensity (excited at 488 nm) are negligible.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 847: Symposium EE – Organic/Inorganic Hybrid Materials , 2004 , EE13.31
Copyright
Copyright © Materials Research Society 2005

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References

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