Preparation Of Mesoporous Fluorescent Material Based On Coordination Amphiphilic Molecules Self-assembly

In recent years, mesoporous silicas has a promising future because of the advantages of high surface area, well-defined pore structure, tunable pore sizes, easy modification, chemical stability and optical transparency, this brand-new material has a great prospect in catalysis, fluorescent recognition, adsorption, separation, drug-controlled and some other areas. However, with the development of the technology, the oneness and diseconomy of the mesoporous materials largely limit the development of itself. People began to study more efficient, fast, and green approach to the preparation of new type of functional mesoporous materials. The thesis launched a series of studies, focused on the synthesis of the fluorescence properties mesoporous materials. The materials makes use of the metal organic molecules as a template in the limited microspace, the main results are as follows:1. A new surfactant QACi2Et3Br was used as a structure-directing agent to fabricate mesoporous silica material by using the hybrid organic-inorganic self-assembly approach in alkaline conditions(MM). The fluorescent mesoporous material (FMM) was prepared via confining coordinate complex assembly in porous silicate channels. The Al3+coordinated with the quinoline of the MM in the water solution thus gave a blue-green fluorescence. The materials has an excellent compatibility with various organic and inorganic materials. For example, FMM has an excellent compatibility with PMMA. Furthermore, FMM is a very important metabolite in the living body and has good selective recognition sites for PPi, and the fluorescence of FMM could be selectively quenched by PPi.2. The surfactant was used as a structure-directing agent to fabricate mesoporous silica material by using the self-assembly approach. The rhodamine silane derivate (RS) joined in the self-assembly process. The adjustable fluorescent mesoporous material (RFMM) was prepared via confining coordinate complex assembly in porous silicate channels. The Al3+in the water solution coordinated with the quinoline in the RMM to give a blue-green fluorescence. The whole process was from red light to white light and turned to blue-green light finally. The cheap raw materials can efficiently make to RFMM, which was use to manufacture the white LED lamp in green process.