Photoluminescent and oxygen sensing properties of core-shell nanospheres based on a covalently grafted ruthenium(II) complex

Document Type

Article

Publication Date

1-1-2011

Abstract

SiO2 nanospheres coated with silica chemically doped with a ruthenium complex [Ru(Bphen)2Phen-Si]Cl2 (denoted as Ru, there Bphen = 4,7-diphenyl-1,10-phenanthrolin, Phen-Si = modified 1,10-phenathroline) were prepared using a simple solution-based method. Field-emission scanning electron microscopy (FE-SEM) showed that the pure SiO2 nanospheres with a mean diameter of ∼185 nm were successfully coated with Ru complex-chemically doped SiO2 shell with a thickness of ∼45 nm. The obtained core-shell nanosphere materials exhibited bright red triplet metal-to-ligand charge transfer (3MLCT) emission, and their photoluminescent intensity was sensitive to oxygen concentration. These properties make them promising candidates for biomarkers and optical oxygen sensors, which can measure the O2 concentration in biological fluids. Copyright © 2010 John Wiley & Sons, Ltd.

Publication Source (Journal or Book title)

Applied Organometallic Chemistry

First Page

21

Last Page

26

This document is currently not available here.

Share

COinS