Jorge, JulianaCastro, Gustavo Rocha de [UNESP]Martines, Marco Antonio Utrera2016-03-022016-03-022013Orbital: the Electronic Journal of Chemistry, v. 5, n. 1, p. 23-29, 2013.1984-6428http://hdl.handle.net/11449/135110We studied the behavior of different pH values of Rhodamine B solution impregnated into pores of mesoporous silica, through structural characterization techniques, such as scanning electron microscopy and porosity measurements, and spectroscopic characterization techniques, such as infrared and luminescence spectroscopy; in order to applications in luminescence. Because, Rhodamine B is an interesting xanthene dye whose optical properties depend of many factors, dye concentration and pH values. MSU-4 type mesoporous silica has been synthesized with Tween 60 surfactant as directing-structure agent and tetraethyl orthosilicate (Si(OEt)4, TEOS) as silica source. The mesoporous structures doped with dyes are promissory materials for several applications, for example, optical sensors and biomarkers.23-29engBiological markersXanthenes dyePhotoluminescencepH effectArtigoAcesso abertoISSN1984-6428-2013-05-01-23-29.pdf02780541220919407655169292768456