| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1308364 | Inorganica Chimica Acta | 2016 | 8 Pages |
•A magnetic-mesoporous composite loaded with Ru(II)-complex was reported.•Core–shell structure was used for this composite for molecular oxygen sensing.•Composite emission was decreased by O2 through a dynamic mechanism.•Oxygen sensitivity of 5.53 and response time of 6 s were observed.
This paper was devoted to a magnetic-mesoporous composite loaded with emissive Ru(II) complex for oxygen sensing application. Core–shell structure was used for this composite, with superparamagnetic Fe3O4 as the core and silica molecular sieve MCM-41 as the shell, respectively. A Ru(II) complex was covalently grafted into MCM-41 tunnels to minimize photobleaching. This core–shell structured composite was analyzed and confirmed by electron microscope images, XRD, IR, TGA and N2 adsorption/desorption. Photophysical measurement on this composite suggested that its emission was decreased by increasing O2 concentration, showing sensing behavior through a dynamic mechanism. Oxygen sensitivity of 5.53 and response time of 6 s were observed from this composite with a non-linear Stern–Volmer working plot.
Graphical abstractA magnetic-mesoporous composite loaded with emissive Ru(II) complex was designed for oxygen sensing application. Oxygen sensitivity of 5.53 and response time of 6 s were observed from this composite with a non-linear Stern–Volmer working plot.Figure optionsDownload full-size imageDownload as PowerPoint slide
