کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1308364 | 1499147 | 2016 | 8 صفحه PDF | دانلود رایگان |

• 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.
A 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 as PowerPoint slide
Journal: Inorganica Chimica Acta - Volume 442, 1 March 2016, Pages 111–118