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Findings on Dyes and Pigments Discussed by Investigators at Technical University (Development of new precursors for immobilizing dyes onto silica...

July 29, 2014

Findings on Dyes and Pigments Discussed by Investigators at Technical University (Development of new precursors for immobilizing dyes onto silica surfaces)

By a News Reporter-Staff News Editor at Journal of Technology -- Current study results on Dyes and Pigments have been published. According to news reporting originating from Freiburg, Germany, by VerticalNews correspondents, research stated, "A series of new precursors for immobilization of dyes onto silica surface have been synthesized and characterized. Diazobenzene-derived dyes were synthesized by coupling salicylaldehyde and a diazotized aniline derivative."

Our news editors obtained a quote from the research from Technical University, "Condensation of the resultant carbaldehyde functionalized dyes with 3-aminopropylsilatrane afforded diazo-azomethine functionalized compounds containing silatranyl moiety, which were characterized using spectroscopic techniques, elemental analysis and single-crystal X-ray diffraction. Substituent dependent variation in electronic properties of silatranyl dyes was studied and the capability of immobilization of silatranyl substituted dyes was tested by synthesizing silica nanoparticles coated with immobilized dye. The derivatization of silica was confirmed by spectrophotometric, thermogravimetric and microscopic studies. The functionalized silica exhibit uniformly dispersed spherical particles of 170 nm diameter with an estimated approximate 8 nm coating of dye. As the silatranyl substituted dyes can be isolated in crystalline forms, they proved to be better precursors for immobilization in terms of purity and uniform distribution onto silica surfaces."

According to the news editors, the research concluded: "The modified silica surfaces possess binding sites for capturing copper ions."

For more information on this research see: Development of new precursors for immobilizing dyes onto silica surfaces. Dyes and Pigments, 2014;108():41-49. Dyes and Pigments can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier -; Dyes and Pigments -

The news editors report that additional information may be obtained by contacting R. Mutneja, Technical Univ Bergakad Freiberg, Inst Anorgan Chem, D-09596 Freiberg, Germany. Additional authors for this research include R. Singh, V. Kaur, J. Wagler and E. Kroke.

Keywords for this news article include: Freiburg, Germany, Europe, Dyes and Pigments

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Source: Journal of Technology

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