title: On a magnetic-luminescent nanocomposite for oxygen sensing application: Construction, characterization and sensing performance.
abstract: 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 16s were obtained with good photostability.
authors.affiliation: Guangxi Medical University, Nanning 530021, Guangxi, China; Department of Chemistry, University of Calgary, Calgary, Alberta, Canada.
authors.forename: Tieyu
authors.initials: T
authors.lastname: Chen
authors.affiliation: Department of Chemistry, University of Calgary, Calgary, Alberta, Canada.
authors.forename: Henry
authors.initials: H
authors.lastname: Dai
authors.affiliation: Guangxi Medical University, Nanning 530021, Guangxi, China. Electronic address: tieyuchen362@163.com.
authors.forename: Xing
authors.initials: X
authors.lastname: Peng
keywords: Fe(3)O(4) core; O(2) sensing; Ru(II) complex; Stern–Volmer plot