Study On The Supramolccular Interaction Of Cucurbiturils And Aromatic Hydrocarbon Compounds

Nowadays supramolecular chemistry or host-guest chemistry has become one of the hot fields of chemical research . Just as there is a field of molecular chemistry based on the covalent bond, there is a field of supramolecular chemistry, the chemistry of molecular assemblies and of Host-Guest Chemistry, Molecular Recognition. Cucurbit[n]urils are cyclic methylene-bridged glycoluril oligomers whose shape resembles a pumpkin. The defining features of cucurbit[n]urils are their two portals lined by carbonyl groups that provide entry to their hydrophobic cavity.Due to their special structure, cucurbit[n]urils are becoming a series new hosts after crown ether, cyclodextrin and calixarene, and are one of the important investigation of the supramolecular chemistry.The aromatic hydrocarbon compounds — one of the bigger pollution of the environment things of toxicity, mostly for deadly poison- is a very organic pollutant worthy of pay attention to.It is concerned to the existence appearance in the environment, to the influence mechanism of the environment and efficiently examination method etc.. by environment chemistry. Interaction between cucurbit[n=6-8]urils with aromatic hydrocarbon compounds have been investigated by using ~1H NMR technique, fluorescence spectrophotometry, ultraviolet spectrophotometry and Cyclic voltammetric.In the first party of the thesis, Interaction between cucurbit[n=6-8]urils with aniline and its derivates have been investigated by using fluorescence spectrophotometry .The experimental results reveal that cucurbit[6]uril (Q[6]) can only interact with guest aniline and p-phenylene diamine with a ratio of 1:1; However, cucurbit[7]uril (Q[7]) can interact with aniline, o-phenylene diamine and p-phenylene diamine with the same of ratio of 1:1, cucurbit[8]uril (Q[8]) , except with all four guests with a ratio of 1:2 .In the second party of the thesis, Interaction between cucurbit[n=7-8]urils with naphthylamine,diaminonaphthalene and its isomers have been investigated by using ~1H NMR technique,fluorescence spectrophotometry and ultraviolet spectrophotometry. The experimental results reveal that cucurbit[7]uril (Q[7]) can interact with all guests with the same of ratio of 1:1. cucurbit[8]uril (Q[8]) can interact with naphthylamine and its isomers...