Through a one-step procedure, covalent bonding of Disperse-Red-1 (DR1) dye to the internal surface of HMS silica has been achieved, leading to anchored molecules freely accessible to gases. Template removal by different solvents yields surface with different polarities, which affect the optical properties of DR1. This effect is dramatic when extraction is carried out in refluxing ethanol, because ethoxylation of the silica surface occurs.
One-pot synthesis and characterization of HMS silica carrying Disperse Red 1 (DR1) covalently bonded to the inner surface
BAROLO, CLAUDIA;VISCARDI, Guido;
2005-01-01
Abstract
Through a one-step procedure, covalent bonding of Disperse-Red-1 (DR1) dye to the internal surface of HMS silica has been achieved, leading to anchored molecules freely accessible to gases. Template removal by different solvents yields surface with different polarities, which affect the optical properties of DR1. This effect is dramatic when extraction is carried out in refluxing ethanol, because ethoxylation of the silica surface occurs.File in questo prodotto:
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Compte Rendu de Chimie 8 655 661 2005.pdf
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