Novel Porous Organic Polymers:Synthesis,Characterization And Applications To Colorimetric And Fluorescent Sensing

The development of porous materials has experienced inorganic porous materials(such as molecular sieves),organic-inorganic hybrid porous materials(such as Metal-Organic Frameworks,MOFs)and Porous Organic Frameworks(POFs).Porous organic materials are novel porous materials that are connected by a mechanism building unit.Porous organic materials have attracted wide attention from researchers due to their high degree of porosity and easy functionalization.They have achieved rapid growth in heterogeneous catalysis,gas adsorption and separation,photovoltaic materials,and biochemical sensing,development of.Among many porous organic polymer materials,covalent organic framework materials(COFs)have good crystallinity and ordered pore structure;amorphous porous organic polymer materials(POPs)have high specific surface area and strong thermal stability.Sexual and chemical stability has been extensively studied.In this thesis,a novel porous organic polymer material(FePPOP-1)and a new type of covalent organic framework material(COFs-DT)were designed and synthesized,and their structures were characterized.Systematic research and design of two types of chemical sensors for the quantitative detection of antioxidants,H2O2,glucose and copper ions.The specific research contents of the thesis are as follows:1?A novel porous organic polymerization was synthesized by solvothermal method between 1,3,5-triacetylenylbenzene(TRBE)and 5,10,15,20-tetrabromoiron porphyrin(FeTBrPP)by substitution reaction.Object,named FePPOP-1.The successful preparation of the material by scanning electron microscopy,Fourier transform infrared spectroscopy,nitrogen absorption desorption curve and the like has a large specific surface area.FePPOP-1 exhibits strong peroxidase-like activity against the peroxidase substrate 3,3',5,5'-tetramethylbenzidine(TMB)in the presence of H2O2,using materials as a ratio The color sensor detects H2O2,glucose and three antioxidants(AA,GA,TA),has high sensitivity and stability,and studies the interaction between three antioxidants and materials.2?A novel covalent organic framework material with high specific surface area was synthesized by Schiff base reaction using DHNDA and TABP as basic structural unit,named COFs-DT.The materials were characterized by scanning electron microscopy,Fourier transform infrared spectroscopy,powder X-ray diffraction and nitrogen adsorption desorption curves.The porosity and structural order were proved.The hydroxyl group is introduced into the adjacent sites of the-C=N group in COFs-DT,and the crystallinity of COFs-DT is enhanced by the interaction of OH...N=C hydrogen bonds,and it can also be combined with specific ions through the bidentate.The body is chelated.We use the material as a fluorescence sensor to specifically detect copper ions.The linear detection range is 0.1 ?M to 20 ?M,and the lowest detection line is 0.063 ?M,indicating that the sensor has good specificity,repeatability,Stability and high sensitivity,and its detection mechanism was studied.