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Local structure and near-infrared emission features of neodymium-based amine functionalized organic/inorganic hybrids

M. C. Goncalves ; N. J. O. Silva ; V. D. Z. Bermudez ; R. A. S. Ferreira ; L. D. Carlos ; K. Dahmouche ; C. V. Santilli ; Denis Ostrovskii (Institutionen för teknisk fysik, Kondenserade materiens fysik) ; I. C. C. Vilela ; A. F. Craievich
Journal of Physical Chemistry B (1520-6106). Vol. 109 (2005), 43, p. 20093-20104.
[Artikel, refereegranskad vetenskaplig]

Nd3+-based organic/inorganic hybrids have potential application in the field of integrated optics. Attractive sol-gel derived di-urea and di-urethane cross-linked poly (oxyethylene) (POE)/siloxane hybrids (di-ureasils and di-urethanesils, respectively) doped with neodymium triflate (Nd(CF3SO3)(3)) were examined by Fourier transform mid-infrared (FT-IR), Raman (FT-Raman), Si-29 magic-angle spinning (MAS) nuclear magnetic resonance (NMR) and photoluminescence spectroscopies, and small-angle X-ray scattering (SAXS). The goals of this work were to determine which cation coordinating site of the host matrix (ether oxygen atoms or carbonyl oxygen atoms) is active in each of the materials analyzed, its influence on the nanostructure of the samples and its relation with the photoluminescence properties. The main conclusion derived from this study is that the hydrogen-bonded associations formed throughout the materials play a major role in the hybrids nanostructure and photoluminescence properties.

Nyckelord: organic-inorganic nanocomposites, eu3+ ions, poly(ethylene oxide), optical-properties, polymer electrolytes, trivalent cations, energy-transfer, metal salts, complexes, nanohybrids



Denna post skapades 2010-02-25.
CPL Pubid: 114819

 

Institutioner (Chalmers)

Institutionen för teknisk fysik, Kondenserade materiens fysik (1900-2015)

Ämnesområden

Fysikalisk kemi

Chalmers infrastruktur