Preparation And Characterization Of Low-dimensional Luminescent Materials

One-dimensional (1D) rare earth nanostructural materials have aroused remarkable attention due to a great deal of potential applications, such as data storage, optoelectronic devices, light-guide fibers and biochemical and chemical sensors. Moreover, it also provided a better model system to investigate the dependence of optical and electronic properties on size confinement and dimensionality.Nano luminescent materials are of fundamental and technical interest due to their characteristic luminescence properties, such as long lifetime, extremely sharp emission bands, and potential high internal quantum efficiency. It can be used in analytical chemistry and biochemistry as biomarkers, biological probe, shine membrane layer, organic electroluminescent devices. However, pure complexes usually do not have good mechanical and thermal stabilities and processing ability, which restricts the complexes to promising extensive photophysical applications and limited practical uses. With the development of nano preparation technology matures, the synthesis of one-dimensional nanomaterials of rare earths and assembly and luminescent properties has attracted more interest, become a hot research topic in luminescent materials science, nanoscience and hot. Rare earth materials have a very broad application prospects in the photoelectron information industry, biological medicine industry. Nanometer material and nano structure materials, can improve the image resolution, but also can greatly improve the luminescence quantum efficiency. One-dimensional nano rare earth luminescent materials were studied in our research. Combining sonication with electrospinning, the One-dimensional nano rare earth luminescent materials were obtained. The effect of different factors on the the morphology, structure and luminescent properties of composition fibers were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fluorescence Spectrometer (FS). Under optimized conditions, with good morphology, high luminescent intensity and long life time can be prepared. The major results as follows:Nano required luminous material was prepared by ultrasonic method, change the factors of the preparation process of ultrasonic power, ultrasonic time, their physical properties and the luminescence properties have obvious change; by changing the parameters of the electrostatic spinning experiment, success of the nanometer size uniform, light intensity, fluorescence lifetime high luminous particles.