摘要
研究了三蝶烯双冠醚钳形主体与N,N′-二丙基-2,7-氮杂芘盐在溶液中及固态下的络合性质,发现主体分子能够与客体分子形成1∶1的超分子络合物.通过核磁氢谱及理论计算确认络合物的结构,发现主体分子像钳子一样将客体分子包在空腔中,24-冠-8的2个苯环处于相互垂直的位置,客体分子的2个丙基分别指向主体的2个冠醚空腔.进行了主体分子对二苄铵盐及N,N′-二丙基-2,7-氮杂芘盐的选择性识别行为研究,发现通过三乙胺与三氟乙酸能有效地调控主体分子对2种不同客体的识别,为进一步发展可酸碱调控的分子组装体打下了坚实的基础.
The complexation process between the tweezers-liked triptycene-derived bis（crown ether）host and N,N′-dipropyl-2,7-azopyrene salt guest in both solution and solid state was investigated in detail.It was found that the host could form 1∶1 complexes with N,N′-dipropyl-2,7-azopyrene salt in solution and solid state.The structure of the complex was confirmed by 1 H NMR and theoritical calculations.In the solid state the guest is included in the center of the host while the two N-methyl groups are positioned in the two DB24 C8 cavities.Moreover,the complexation process between host,dibenzylammonium and N,N′-dipropyl-2,7-azopyrene salts can be controlled by pH,which provide us an opportunity to further construct molecular assembly with acid-base control.
作者
唐琳俐
谭英芝
丁满花
曾飞
TANG Lin-li;TAN Ying-zhi;DING Man-hua;ZENG Fei(Department of Biology and Chemistry, Hunan University of Science and Engineering, Key Laboratory Comprehensive Utilization of Dominant Plants Resources in South Hunan, Yongzhou 425199, China)
出处
《分子科学学报》
CAS
CSCD
北大核心
2018年第3期195-198,共4页
Journal of Molecular Science
基金
国家自然科学基金资助项目(21602055)
关键词
分子镊
三蝶烯
冠醚
酸碱调控
molecular tweezer
triptycene
crown ether
acid-base control
