Synthesis, Texture, and Photoluminescence of Lanthanide-Containing Chitosan−Silica Hybrids

• DOI: 10.1021/jp908563d
• Publication Date: 2009-12-08T00:40:42Z
• Authors: Fengyi Liu; Luis D. Carlos; Rute A. S. Ferreira; João Rocha; Marta C. Ferro; Audrey Tourrette; Françoise Quignard; Mike Robitzer
• Keywords: Texture (cosmology)

Three different types of photoluminescent hybrid materials containing trivalent lanthanide (Ln3+ = Eu3+, Tb3+) ions, chitosan, and silica have been prepared with structural features. The sources lead to diverse microstructures materials, being homogeneously dispersed in the chitosan (LnChS−H), or forming a core−shell morphology. Postsynthesis treatment is necessary for embedding luminescent probe. Ln3+-based investigated by photoluminescence spectroscopy (12−300 K). chitosan−Eu3+-related local environment maintained EuChS−H material. emission features are characterized presence two Eu3+ distinct environments, one associated core other shell.