This work reports on the implementation of different absorption micro-filters based on a dye-doped hybrid organic-inorganic xerogel polymeric material synthesized by the sol-gel process. Microstructures containing eight different filter widths were fabricated in polydimethylsiloxane (PDMS), bonded to glass substrates and filled with the corresponding dye doped polymeric material by a soft litho...

BACKGROUND Salicylic acid and its derivatives are widely used drugs with potential toxicity. The main areas of salicylate derivatives determination are biological liquids and pharmaceuticals analysis. RESULTS Silica-titania xerogel has been used for solid phase spectrophotometric determination of various salicylate derivatives (salicylate, salicylamide, methylsalicylate). The reaction conditi...

Nickel ferrites have been extensively studied due to their numerous applications in electronic devices, microwave adsorbents, corrosion protectors, magnetic fluids and catalysts [1-5], among others. Nickel ferrite is a soft material with inverted spinel with the tetrahedral site (A) occupied by Fe and the octahedral site occupied by Fe and Ni. It is applied to devices that require easy magnetiz...

Naproxen (Nap), a non-steroidal anti-inflammatory drug, and 5-fluorouracil (5FU), an anticancer were easily incorporated into polyurea xerogel. Polyureas (PUr) synthesized by one pot reaction via sol–gel chemistry. Soft segments based on polyetheramine-PEO hard hexamethylene diisocyanate trimer (HDI). The final materials characterized Fourier transform infrared (FTIR) spectroscopy, small-angle ...