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Hybrid materials obtained from organic modified silica and an azo dye by sol-gel method

V. RADITOIU1,* , A. RADITOIU1, L.E. WAGNER1, M. F. RADULY1, C. A. NICOLAE1, R. C. FIERASCU1

Affiliation

  1. National Research and Development Institute for Chemistry and Petrochemistry – ICECHIM, Splaiul Independentei no. 202, 6-th district, 060021, Bucharest, Romania

Abstract

The paper presents new types of organic-inorganic hybrid materials prepared from an azo dye bearing chelating groups and triethoxysilane residues, and tetraethoxysilane derivatives frequently used in sol-gel processes. Hybrid materials obtained were characterized by XRF spectrometry, FT-IR spectrometry, UV-VIS reflexion spectra, color measurements in CIELAB system and thermal analysis. Structure-properties relationships of the obtained organic-inorganic hybrid materials are discussed with respect to the structure and nature of the organic modifying agents..

Keywords

Hybrid materials, Silica, Dye, Extraction, Chelating groups.

Submitted at: June 16, 2010
Accepted at: July 14, 2010

Citation

V. RADITOIU, A. RADITOIU, L.E. WAGNER, M. F. RADULY, C. A. NICOLAE, R. C. FIERASCU, Hybrid materials obtained from organic modified silica and an azo dye by sol-gel method, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 7, pp. 1566-1572 (2010)