| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1231668 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2015 | 8 Pages |
•A magnetic-luminescence nanocomposite for oxygen sensing was reported.•Fe3O4 and MCM-41 were chosen as the inner core and the outer shell, respectively.•A Ru(II) complex was grafted into MCM-41 shell, serving as sensing probe.•Sensitivity of 5.8 and response time of 16 s were obtained.
This paper was devoted to the construction of a magnetic-luminescence nanocomposite for oxygen sensing application, where superparamagnetic Fe3O4 and silica molecular sieve MCM-41 were chosen as the inner core and the outer shell, respectively. A Ru(II) complex was grafted into MCM-41 shell through a coupling ligand N1-(5H-cyclopenta[1,2-b:5,4-b′]dipyridin-5-ylidene)benzene-1,4-diamine (denoted as Dafo-Ph-NH2). The final composite was analyzed by electron microscope images, XRD, IR spectra, thermogravimetry and N2 adsorption/desorption. Oxygen sensing performance of this composite was evaluated. Sensitivity of 5.8 (the ratio of emission intensity in pure N2 to that in pure O2) and response time of 16 s were obtained with good photostability.
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