Iridium(iii)-surfactant complex immobilized in mesoporous silica via templated synthesis: A new route to optical materials
Articolo
Data di Pubblicazione:
2011
Citazione:
Iridium(iii)-surfactant complex immobilized in mesoporous silica via templated synthesis: A new route to optical materials / M. De Barros E Silva Botelho, J.M. Fernandez-Hernandez, T.B. De Queiroz, H. Eckert, L. De Cola, A.S.S. De Camargo. - In: JOURNAL OF MATERIALS CHEMISTRY. - ISSN 0959-9428. - 21:24(2011), pp. 8829-8834. [10.1039/c1jm10878f]
Abstract:
In this work we report the preparation of a new blue-emitting material based on the templated synthesis of mesoporous silica (MCM-41) using micellar solutions of the newly synthesized monocationic metallosurfactant complex bis[1-benzyl-4-(2,4-difluorophenyl)-1H-1,2,3-triazole](4,4′-diheptadecyl- 2,2′-bipyridine)-iridium(iii) chloride in hexadecyl-trimethyl-ammonium bromide (CTAB). Under ambient conditions, significant increases in excited state lifetime and quantum yield values (up to 45%), were obtained for the solid materials in comparison to the corresponding micellar solutions. Solid state 1H and 19F NMR spectroscopies were successfully employed for quantifying the luminophore content in terms of Ir-surfactant to CTAB and Ir-surfactant to silica ratios.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
surfactant ruthenium complexes; heterogeneous catalysts; iridium complexes; molecular-sieves; hydrid materials; thin-films; nanoparticles; MCM-41; SBA-15; NMR
Elenco autori:
M. De Barros E Silva Botelho, J.M. Fernandez-Hernandez, T.B. De Queiroz, H. Eckert, L. De Cola, A.S.S. De Camargo
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