INTEMA 05428
INSTITUTO DE INVESTIGACIONES EN CIENCIA Y TECNOLOGIA DE MATERIALES
Unidad Ejecutora - UE
artículos
Título:
Tuning the photoluminescence of silsesquioxanes with short substituted urea bridges
Autor/es:
M. L. GÓMEZ; D. P. FASCE; R. J. J. WILLIAMS; C. M. PREVITALI; L. MATEJKA; J. PLESTIL; J. BRUS
Revista:
MACROMOLECULAR CHEMISTRY AND PHYSICS
Editorial:
Wiley VCH
Referencias:
Lugar: Weinheim; Año: 2008 vol. 209 p. 634 - 642
ISSN:
1022-1352
Resumen:
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The polycondensation of a precursor synthesized by the reaction of 3-(anilinepropyl)trimethoxysilane
with 3-(isocyanatopropyl)triethoxysilane led to a silsesquioxane bearing a
substituted urea group in the short organic bridge. The self-assembly of
organic bridges, analyzed by SAXS and FTIR spectra, could be controlled by
varying the conditions of the synthesis. Depending on the size of organic
clusters, the silsesquioxane exhibited photoluminescence either in the green or
red regions of the spectra, or an emission that could be tuned in the whole
visible region by the excitation wavelength.
