Direct blue dye-encapsulated mesostructured MCM-41 composites: Microwave-assisted preparation and characterization

The preparation of triazo dye direct blue 71 (DB71)-encapsulated mesostructured MCM-41 materials has successfully been performed by a microwave-assisted method or under conventional room temperature condition. The structures and properties were characterized by XRD, N2 adsorption analysis, electron microscopy, FT-IR, 13C NMR, UV–vis, and TGA–DSC. A blue-shift of UV–vis spectra was observed in the conventional room temperature-synthesized DB71/MCM-41 sample, and a red-shift in the microwave-synthesized DB71/MCM-41 samples, which may give a wide optical application.