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Synthesis, characterization and photoisomerization behavior of some organic modified silica – azo dye hybrid films

V. RADITOIU1,* , A. RADITOIU1, L. E. WAGNER1, M. F. RADULY1, V. AMARIUTEI1, 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 organic-inorganic hybrid materials prepared from a derivative of 2-(4-aminobenzenesulphonyl)-ethanol having triethoxysilane groups, tetraethoxysilane and organic trialkoxysilane derivatives frequently used in sol-gel processes. Structure-properties relationships on obtained hybrid materials are discussed on basis of XRF spectrometry, FT-IR spectrometry, UV-VIS reflectance spectra and thermal analysis. Photoisomerization of the chromogen was studied in relationship with environments of the organic dye obtained by modifying silica network with different organic groups during sol-gel processes..

Keywords

Hybrid materials, Silica, Azo dye, Photoisomerization.

Citation

V. RADITOIU, A. RADITOIU, L. E. WAGNER, M. F. RADULY, V. AMARIUTEI, C. A. NICOLAE, R. C. FIERASCU, Synthesis, characterization and photoisomerization behavior of some organic modified silica – azo dye hybrid films, Optoelectronics and Advanced Materials - Rapid Communications, 5, 4, April 2011, pp.363-369 (2011).

Submitted at: March 22, 2011

Accepted at: April 11, 2011