基于杯[6]芳烃的分子容器的合成及其对有机铵的可逆识别  

Synthesis and Reversible Recognition for Organic Ammoniums of a Molecular Receptor Based on Calix[6]arene

作　　者：屠春来[1] 郑超[1] 陈燕[1] 舒谋海[1] 

机构地区：[1]上海交通大学化学化工学院,上海200240

出　　处：《高等学校化学学报》2007年第10期1917-1919,共3页Chemical Journal of Chinese Universities

基　　金：教育部留学归国人员科研启动基金资助.

摘　　要：Calix[6]arenes often serve as molecular host in supramolecular chemistry, however, they show a conformation flexibility due to the inversion of the aromatic rings. It is important to control the structure flexibility of calix[6]arenes. In this work, a C3v-symmetrical molecular receptor calix[6]TPA was synthesized and characterized via 1H NMR, 13C NMR, ESI-MS, and X-ray structural analysis. Molecular recognitions of calix[6]TPA for small organic ammoniums were investigated with 1H NMR, and the inclusions of the straight chain ammoniums were reversiblly controlled by the acidity of the solution. The results indicate that the introduction of a tripodal N4-crypto cap is beneficial to rigidify the structure in a cone conformation, the hydrophobic cavity is an efficient receptor for organic guests, and the reversible recognition of straight chain ammoniums can be potentially applied in separation of organic amines.Calix [ 6 ]arenes often serve as molecular host in supramolecular chemistry, however, they show a conformation flexibility due to the inversion of the aromatic rings. It is important to control the structure flexibility of calix [ 6 ] arenes. In this work, a C3v-symmetrical molecular receptor calix [ 6 ] TPA was synthesized and characterized via ^1H NMR, 13C NMR, ESI-MS, and X-ray structural analysis. Molecular recognitions of calix [ 6] TPA for small organic ammoniums were investigated with ^1H NMR, and the inclusions of the straight chain ammoniums were reversiblly controlled by the acidity of the solution. The results indicate that the introduction of a tripodal N4-crypto cap is beneficial to rigidify the structure in a cone conformation, the hydropho- bic cavity is an efficient receptor for organic guests, and the reversible recognition of straight chain ammoniums can be potentially applied in separation of organic amines.

关 键 词：杯芳烃 分子识别 核磁共振谱 超分子化学 

分 类 号：O621.25[理学—有机化学]