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.
出处
《有机化学》
SCIE
CAS
CSCD
北大核心
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~~
作者简介
Corresponding author. E-mail： gyhxxiaoxin@163.com
