The Synthesis And Properties Of Complexes Based On Tetraphenylethene

Efficient solid luminescence materials for photovoltaic research is of great significance, in recent years, a new kind that has gathered induced luminescence characteristics of light emitting organic molecules has caused wide attention. In this type of luminescent material, tetraphenylethylene(TPE) is a simple molecular structure but showed excellent gathered induce light-emitting molecule. Use TPE as the basic building blocks, and reactions such as carboxylic acids and pyridine, extend the many efficient solid-state luminescent compounds. TPE derivatives as rigid organic ligand to build glowing metal organic skeleton, make it to fluorescent sensors,has a good application prospect.In this thesis, We designed and synthesized a tetracarboxylate linker precursor, 1,1,2,2-tetrakis[4-(4-carboxyphenyl)phenyl]ethene(H4TCPPE) and1,1,2,2-tetrakis(4-(pyridin-4-yl)phenyl) ethane(TPyPE). The two ligands has the characteristics of the aggregation induced luminescence. Fluorescence with quantum yield 24% and 29% respectively. Under different conditions, we use H4 TCPPE and zinc(II) synthesized 3 different metal organic complexes with fluorescent:[Zn2(TCPPE)](1), [Zn2(TCPPE)(bib)](2), [Zn2(TCPPE)(bpy)](3). We use TPyPE ligands with Cd(NCS)2 and Ag(I) synthesized 5 different metal organic complexes with fluorescent : 2D-[Cd(TPyPE)(NCS)2](4), 3D-[Cd(TPyPE)(NCS)2]( 5),[Ag(TPyPE)]·(NO3)(6), [Ag(TPyPE)(OTs)](7), [Ag(TPyPE)(NCS)](8). We use X-ray single crystal diffraction to determine their crystal structure, its structure was determined by the powder XRD diffraction and infrared spectrum analysis, element analysis, gas stripping absorption, fluorescence properties and thermal stability analysis of the nature of particular average.In the research of this paper, we found that the solvent molecules, anionic,synthetic conditions such as reaction temperature and the ratio of the reaction of the reactants will affect the quality and structure of the complexes. In the eight complexes,complexes 1 is a 3 D channel structure, the fluorescence of different organic solvents selective recognition. Complexes 2 and 3 is a 3 D column layer structure. Complex 3has selective recognition to volatile organic solvent vapors. Complexes 4 and 5 are a pair of supramolecular complexes isomer, the fluorescence has selective recognition to different metal ion. Complexes 6,7and 8 is different metal organic skeleton compounds with fluorescent synthesized by changing the anionic.