Synthesis And Properties Of Covalent Organic Framework Materials Based On Tetraphene Ligand

Covalent organic framework(COFs)is mainly composed of some common light elements such as C,H,O,N,B and other organic porous ordered materials connected by organic covalent bonds.COFs materials are ordered porous materials developed on the basis of metal organic frame materials(MOFs).Compared with conventional porous materials such as molecular sieves,porous polymers,metal organic framework materials(MOFs),COFs materials have many advantages because of their pure organic structure characteristics.For example,it has low density,high surface area,and can be modified in the initial cell.At present,COFs materials have been widely studied in the fields of gas storage and separation,heterogeneous catalysis,energy storage materials,optoelectronics,sensing and drug delivery,and have shown excellent application prospects.This paper mainly includes the following aspects:Part I: With four styrene synthesis of 4 ’,4 ’ ’,4 ’ ’ ’,4 ’ ’ ’ ’ ’-(alkyl,1,2,2 vinyl-1-4)four(((1,1’-biphenyl]-4-formaldehyde))complexes,Then,a series of covalent organic framework materials were obtained by using TPE-Ph-CHO as the main ligand to react with hydrazine hydrate,p-phenylenediamine and benzidine respectively.After a series of basic characterization,it is proved that COF-1,COF-2and COF-3 series products are ordered porous organic frame materials,and they are applied to LED light-emitting devices for research white LED lamp.Part Two: With four styrene synthesis of 4 ’,4 ’ ’,4 ’ ’ ’,4 ’ ’ ’ ’-(alkyl,1,2,2 vinyl-1-4)four(3-fluoro-[1,1’-biphenyls]-4-formaldehyde)complexes,Then,using TPE-Ph(F)-CHO as the main ligand to react with hydrazine hydrate,p-phenylenediamine and benzidine,a series of covalent organic framework materials were obtained.The influence of element F on the synthesis and performance of COFs were explored by adding element F to the core luminescent group,which was also loaded on the blue LED lamp.Compare with the previous system.Part III: The synthesis of TPB-DMTP from 1,3,5-tri(4-aminophenyl)benzene and 2,5-dimethoxy-benzene-1,4-diamine by dehydration condensation reaction.To explore its optics.The COF material was uniformly dispersed in water to test the selectivity of COF for fluorescence quenching of different metal ions.