Local structure and near-infrared emission features of neodymium-based amine functionalized organic/inorganic hybrids
Artikel i vetenskaplig tidskrift, 2005

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.

trivalent cations

polymer electrolytes

complexes

nanohybrids

poly(ethylene oxide)

organic-inorganic nanocomposites

eu3+ ions

energy-transfer

optical-properties

metal salts

Författare

M. C. Goncalves

Universidade de Tras-os-Montes e Alto Douro

N. J. O. Silva

Centro de Investigacao em Materiais Ceramicos e Compositos

V. D. Bermudez

Universidade de Tras-os-Montes e Alto Douro

R. A. S. Ferreira

Centro de Investigacao em Materiais Ceramicos e Compositos

L. D. Carlos

Centro de Investigacao em Materiais Ceramicos e Compositos

K. Dahmouche

UNESP-Universidade Estadual Paulista

C. V. Santilli

UNESP-Universidade Estadual Paulista

Denis Ostrovskii

Chalmers, Teknisk fysik, Kondenserade materiens fysik

I. C. C. Vilela

Universidade de Tras-os-Montes e Alto Douro

A. F. Craievich

Universidade de Sao Paulo (USP)

Journal of Physical Chemistry B

1520-6106 (ISSN) 1520-5207 (eISSN)

Vol. 109 20093-20104

Ämneskategorier

Fysikalisk kemi

DOI

10.1021/jp052097n