High quality silica and Si(100) substrates were functionalized with a covalent 4-ClCH(2)C(6)H(4)SiCl(3) monolayer. Additional covalent bonding of an OH-phenol functionalized asymmetric ruthenium complex [Ru(bpy)(2)L](PF(6))(2) to the silylated substrates was further achieved, thus fabricating a new monolayer of ruthenium complex molecules on both silica and Si substrates. The chemical and spectroscopic characterization was carried out by X-ray photoelectron and UV visible spectroscopy measurements. The optical properties of this robust monolayer were studied at room temperature by luminescence measurements in controlled atmosphere. Results grant the system recognition properties for CO at ppm levels. The adopted synthetic procedure has proven to be effective in transferring molecular properties to the solid state thus obtaining a photoluminescent device.

Luminescence of a Ruthenium Complex Monolayer, Covalently Assembled on Silica Substrates, upon CO Exposure

FRAGALA', Maria Elena;GULINO, Antonino
2010

Abstract

High quality silica and Si(100) substrates were functionalized with a covalent 4-ClCH(2)C(6)H(4)SiCl(3) monolayer. Additional covalent bonding of an OH-phenol functionalized asymmetric ruthenium complex [Ru(bpy)(2)L](PF(6))(2) to the silylated substrates was further achieved, thus fabricating a new monolayer of ruthenium complex molecules on both silica and Si substrates. The chemical and spectroscopic characterization was carried out by X-ray photoelectron and UV visible spectroscopy measurements. The optical properties of this robust monolayer were studied at room temperature by luminescence measurements in controlled atmosphere. Results grant the system recognition properties for CO at ppm levels. The adopted synthetic procedure has proven to be effective in transferring molecular properties to the solid state thus obtaining a photoluminescent device.
osmium; monolayer; sensing
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11769/58226
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