State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, PR China.
Langmuir. 2013 Jan 29;29(4):1273-9. doi: 10.1021/la304398c. Epub 2013 Jan 11.
In this paper, the fabrication, characterization, and application in oxygen sensing are reported for a novel multifunctional nanomaterial of [Ru(bpy)(2)phen-MMS] (bpy, 2,2'-bipyridyl; phen, phenathrolin) which was simply prepared by covalently grafting the ruthenium(II) polypyridyl compounds into the channels of magnetic mesoporous silica nanocomposites (MMS). Scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, N(2) adsorption-desorption, a superconducting quantum interference device, UV-vis spectroscopy, and photoluminescence spectra were used to characterize the samples. The well-designed multifunctional nanocomposites show superparamagnetic behavior and ordered mesoporous characteristics and exhibit a strong red-orange metal-to-ligand charge transfer emission. In addition, the obtained nanocomposites give high performance in oxygen sensing with high sensitivity (I(0)/I(100) = 5.2), good Stern-Volmer characteristics (R(2) = 0.9995), and short response/recovery times (t↓ = 6 s and t↑ = 12 s). The magnetic, mesoporous, luminescent, and oxygen-sensing properties of this multifunctional nanostructure make it hold great promise as a novel multifunctional oxygen-sensing system for chemical/biosensor.
本文报道了一种新型多功能纳米材料[Ru(bpy)(2)phen-MMS]（bpy，2,2'-联吡啶；phen，邻菲咯啉）的制备、表征及其在氧传感中的应用。该纳米材料是通过将钌（II）多吡啶配合物共价接枝到磁性介孔硅纳米复合材料（MMS）的孔道中简单制备得到的。通过扫描电子显微镜、透射电子显微镜、傅里叶变换红外光谱、X 射线衍射、N2 吸附-脱附、超导量子干涉仪、紫外-可见光谱和光致发光光谱对样品进行了表征。设计良好的多功能纳米复合材料具有超顺磁性和有序介孔特性，并表现出强的红橙色金属-配体电荷转移发射。此外，所得纳米复合材料在氧传感中表现出高灵敏度（I(0)/I(100) = 5.2）、良好的 Stern-Volmer 特性（R(2) = 0.9995）和短的响应/恢复时间（t↓ = 6 s 和 t↑ = 12 s）。这种多功能纳米结构的磁性、介孔、发光和氧传感性能使其有望成为一种新型的多功能氧传感系统，用于化学/生物传感器。
