Synthesis And Characterization Of Two New Types Of Fused Ring Compounds

It has long been widely believed that organic matter is not electrically conductive and is therefore widely used as an insulating material.Until the 1970s,three scientists,including American physicist A.J.Heeger,discovered that doping polyacetylene molecules can make them good.Conductors,thus opening the curtain of organic semiconductor technology research,the relationship betweenπsystem and conductivity formed by sp~2 hybrid carbon(such as:graphene)is gradually discovered by scientists,so graphene nanoribbons with largeπsystem and structures such as polycyclic aromatic hydrocarbons enter the field of vision of scientists.Polycyclic aromatic hydrocarbons have a unique chemical structure and electronic structure,and are widely used in organic semiconductor materials such as organic field effect transistors(OFETs)and organic light-emitting diodes(OLEDs)and organic photovoltaic cells(OPVs).In organic electronic materials,several major classes of curved molecules have attracted attention,including bowl-shaped molecules,twisted molecules,and curved molecules(ie,saddle or double concave).The unique shape of the twisted and bowl-shaped molecules,coupled with their strong interaction with electron acceptors such as fullerenes,heralds their use in a variety of organic electronic materials.In this paper,we have designed and synthesized two new types of fused ring compounds.Non-planar polycyclic aromatic hydrocarbons composed entirely of benzene rings are curved compounds formed by excessive steric hindrance in the molecule due to physical overlap of benzene rings,which are rich in stereochemistry due to their distortedπ-center pillars.It has great application prospects in asymmetric catalysis,supramolecular chemistry,liquid crystal and organic electronic devices.When a five-membered or seven-membered ring is introduced into such a compound,it can be made to exhibit a specific curvature.In the first part,we introduce a five-membered or seven-membered ring into the derivative of the c-OBCB compound.The combination of steric hindrance and the introduction of a polycyclic ring causes the distortion of the two factors.The degree of out-of-plane deformation exhibits unique molecular self-assembly behavior and stereochemical properties,and it is expected to obtain a new class of curved compounds with special properties.We obtained my main reaction precursor by a one-step Barton-Kellogg reaction,and then obtained important intermediates in the presence of n-butyllithium.Metal-organic frameworks(MOFs)are periodic,mixed,atom-defined porous materials,usually formed by self-assembly,comprised of inorganic nodes(metal ions or clusters)and multi-theme organic linkers.MOFs as a whole offer many interesting features,including ultra-high porosity,adjustable chemical function and low density.In the second part,we combine the high self-assembly performance of c-HBC with the excellent electron mobility and the excellent catalytic performance of MOFs.The design and synthesis of c-HBC as the organic framework for the formation of nickel ions as metal ions MOFs materials are synthesized in such a way that they can catalyze the synthesis of organic carbon nanotubes by means of molecular self-assembly of c-HBC,so that the growth or film formation of molecular carbon nanotubes is ordered and controllable.