Aluminoxane–epoxi–siloxane hybrids waveguides |
| |
| Authors: | José Maurício A Caiut Lucas A Rocha Fernando A Sigoli Younes Messaddeq Jeannette Dexpert-Ghys Sidney JL Ribeiro |
| |
| Institution: | 1. Institute of Chemistry, São Paulo State University, UNESP, CP 355, Araraquara, SP 14801-970, Brazil;2. Centre d’Elaboration de Materiaux et d’Etudes Structurales/CNRS, B.P. 4347, 31055 Toulouse cedex 4, France;3. Institute of Chemistry, UNICAMP, Campinas, SP 13084-862, Brazil;1. Departamento de Engenharia de Materiais, Vitreous Materials Laboratory, Universidade Federal de São Carlos, São Carlos, SP, Brazil;2. Departamento de Quimica, Instituto de Quimica de Araraquara, UNESP, Araraquara, SP, Brazil;3. Laboratório de Materiais Fotonicos, Instituto de Quimica de Araraquara, UNESP, Araraquara, SP, Brazil |
| |
| Abstract: | Boehmite–GPTS (GPTS-glycidoxypropyltrimethoxysilane) hybrids (BGS) have been prepared by the sol–gel methodology. Spectroscopic properties and structural features have been evaluated from the initial sols to xerogels as a function of composition. Eu3+-containing BGS samples were also prepared, and the Eu3+ 5D0 state emission quantum efficiency was observed to depend on the boehmite–siloxane interactions. Boehmite–siloxane heterocondensation was inferred from vibrational spectroscopy and 13C, 29Si, and 27Al nuclear magnetic resonance results. Unreacted epoxi groups could be identified in the final material being an important characteristic for the future applications. Good optical quality and mechanical properties lead to the preparation of thin films deposited on glass substrates by dip and spin-coating. Refractive index could be tuned by the relative boehmite and GPTS content. Waveguide properties have also been studied by m-lines spectroscopy and guided modes together with attenuation measurements suggest potential application of the prepared films in integrated optics. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
