对称四甲基六元瓜环与紫精类化合物的超分子自组装  

Supramolecular Self-Assembly between Teteamethyl Cucurbit[6]uril and Alkyl Viologens

作　　者：白东[1] 王鑫[2] 高中政 邱胜超 陶朱[1] 张建新 肖昕[1] 

机构地区：[1]贵州省大环化学及超分子化学重点实验室贵州大学,贵阳550025 [2]安阳工学院化学与环境工程学院,安阳455000 [3]贵州省天然产物化学重点实验室,贵阳550025

出　　处：《有机化学》2017年第8期2022-2027,共6页Chinese Journal of Organic Chemistry

基　　金：贵州省高层次创新型人才培养计划(No.2016-5657);贵州省科学技术基金(Nos.2016-1030,2013-2150)资助项目~~

摘　　要：选取3个两端被不同长度烷基取代的紫精衍生物作为客体分子,利用紫外-可见吸收光谱、核磁共振技术、等温滴定量热、基质辅助激光解吸电离飞行时间质谱以及X射线单晶衍射技术等表征手段研究其与对称四甲基六元瓜环(TMeQ[6])的超分子自组装,结果表明这三种紫精衍生物与TMeQ[6]之间具有相同的作用模式,均为客体分子两端的烷基链部分进入到TMeQ[6]的空腔内,主客体以2∶1的作用比形成类似哑铃状的超分子自组装体.Three symmetric viologen derivatives bearing aliphatic substituents of variable length were employed as guests, and the supramolecular self-assembly between teteamethyl cucurbit[6]uril（TMe Q[6]） and these viologen derivatives guests has been studied by ~1H NMR spectroscopy, electronic absorption spectroscopy, isothermal titration calorimetry, mass spectrometry and X-ray diffraction methods in details. The experimental results revealed that there are similar interaction models between TMeQ[6] and three viologens guest, the alkyl chains of the guests are located inside the cavity of the TMeQ[6] host, whereas the 4,4＇-dipyridyl moieties of the guests remain outside of the portal, forming a 2∶1 host-guest inclusion complex.

关 键 词：对称四甲基六元瓜环 紫精衍生物 哑铃状 超分子 自组装 

分 类 号：O641.3[理学—物理化学]