Author(s): Sábio, Rafael Miguel [UNESP] ; Gressier, Marie ; Caiut, José Maurício A. ; Menu, Marie-Joëlle ; Ribeiro, Sidney J.L. [UNESP]
Date: 2018
Persistent ID: http://hdl.handle.net/11449/177944
Origin: Oasisbr
Subject(s): Hybrid; Luminescence; Porous materials; Silylated complexes; Spray pyrolysis
Made available in DSpace on 2018-12-11T17:27:48Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-07-01
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
This work evaluates the luminescent properties of new hybrids obtained by covalent grafting of ruthenium complexes on mesoporous silica particles. Spray pyrolysis afforded the mesoporous silica particles in one step; two different types of structure-directing agents were employed. Scanning and transmission electron microscopy (SEM and TEM, respectively) analyses confirmed that the particles had spherical morphology and ordered hexagonal mesoporosity (2 and 5 nm), which justified the high surface area up to 1420 m2 g-1 measured by Brunauer-Emmett-Teller (BET) surface area analysis. Covalent grafting of silylated ruthenium(II) complexes [Ru(bpy)21]Cl2 and [Ru(bpy)22]Cl2 on the mesoporous particles gave monolayered hybrids, characterized by fourier transform infrared spectroscopy (FTIR), TEM, and photoluminescence. Results highlighted the formation of new luminescent platforms containing an estimated 0.11 mmol of ruthenium(II) complex per gram of silica, which corresponded to 0.09 ruthenium(II) complex nm-2 of silica.
Université de Toulouse Centre Interuniversitaire de Recherche et d'Ingénierie des Matériaux UPS CNRS 5085, 118 route de Narbonne
Departamento de Química Faculdade de Filosofia Ciências e Letras de Ribeirão Preto Universidade de São Paulo
Institute of Chemistry São Paulo State University UNESP, CP355
Institute of Chemistry São Paulo State University UNESP, CP355
