Zinc, Gallium And Other Metal Phthalocyanine Complexes Synthesis, Fluorescence Properties, And Its Analysis Is The Determination Of Applied Research

Phthalocyanines are a kind of important functional dyestuff, due to their stabilities twords heat,light and chemicals,which have ensured their potential applications in photoconductos,optical data storage system,gas sensing deices,photovoltalc cells,nonlinear optics and electrochromic displays.And other high-tech fields have broad prospects and therefore aroused great interest from researchers.But their research and application are limited because their poor solubility in solvents and hard to be made film . Therefore the design and synthesis of new dissolubility phthalocyanine compounds to meet different applications have attracted many boffins.The paper focus on the synthesis of some new soluble phthalocyanine compounds,and the properties and applications of them are researched..1. Thsis literary shones traditional heating and microwave irradiation two kinds of different methods to synthesize a series of metal phthalocyanines, including zinc, aluminium, gallium and other metal-free substitute, nitro,amino sulphophthlocyanice complex. And for the first time in the microwave radiation conditions, the metal phthalocyanine on the synthesis conditions were studied, mainly inspected the irradiation time, the ratio of raw materials and the output power of microwave ovens on the results of the impact. Found that the best conditions are as follows: mol_硝基苯酐 :mol_尿素: mol_配体=1:5:0.21⁰.23; we use the ammonium molybdate as a catalyst; the radition time is 630 s. And the different metal phthalocyanines need the output power of microwave ovens for different: aluminium, gallium phthalocyanine need the output power of microwave ovens to 100%; cobalt, zinc and other phthalocyanines need 70 percent of the output power. Synthesis of the two methods of characterization of the product showed that the two methods can obtain the same structure of the phthalocyanine complexes .And that the microwave radiation method is high-yield, short reaction time ,simple operation.2. Fluorescence properties of zinc tetra-sulphophthalocyanine (ZnTsPc) are studied. It is found that the strongest emission intensity at 690 nm (λex=390 nm) is obtained at pH 12.0 and in the presence of CTAB (7.46×10^-4 mol·L^-1). It is the surfactant and high pH that makes ZnTsPc disaggregate into monomer which increases the emission intensity. The fluorescence can be puenched by thiamazole (RSH). Based on the quenching reaction ,a method for determination of RSH is proposed and the optimum conditions are pH=11.2, c(CTAB)=7.64×10^-4 mol·L^-1,c(ZnTsPc)=2.0×10^-5mol·L^-1. In the concentration range between 2×10^-7 and 1×10^-6 mol·L^-1,△F (F0-F)is liner with c(RSH) and the detection limit is 0.16μmol·L^-1.3. We studied the aggregation of the gallium phthlocyanine at the different pH in the solution and the interaction between gallium phthlocyanine and sodium nitrite.Found that the gallium phthalocyanine is depolymerization by adding acid. And it's UV,fluorescence spectrum changed significantly. In the acid conditions, the diazotization reaction will be occured berween the amino phthlocyanine and sodium nitrite. And makes the conjugate system of the phthalocyanines become smaller. Then it lead the UV and fluorescent of the phthlocyanine changing.We explored the best conditions for the indirect fluorescence quenching to determinate sodium nitrite. The optimum conditions are c(HCl)=0.48 mol·L^-1, c(GaTAPc)=1.25×10^-5mol·L^-1. In the concentration range between 5×10^-7 and 4×10^-6 mol·L^-1,△F (F0-F)is liner with c(NaNO2) and the detection limit is 0.146μmol·L^-1.