摘要
设计合成了具有多个作用位点的长链分子N,N'-二甲基-苯甲基-1,10二氨基癸烷(C10DA)并将其作为客体,利用1H NMR、紫外吸收光谱及荧光光谱等手段考察了C10DA与七元瓜环(主体)的相互作用,以及形成的主客体包结配合物的结构特征.结果表明,随着主客体摩尔比的变化,其作用模式从类轮烷型包结配合物转变成哑铃型包结配合物,这一特性在分子器件的制备方面具有潜在的应用前景.
Molecular motions are quite common in biosystems and closely related to macroscopic motions guest. In the present work, N, N＇-bis （4-dimethylaminobenzyl） -deeane-1,10-diamine （ C 10DA ） with multiple binding sites was designed and synthesized, while the structures and interaction of eucurbit [ 7 ] uril with the guest were investigated by ^1H NMR technique, electronic absorption and fluorescence spectroscopies in details. The experimental results showed that cucurbit[ 7 ] uril can include C10DA forming a pseudorotaxane inclusion complexes or dumbbell-shaped inclusion complexes by changing the molar ratio of the host and guest. This observation contributes to a deeper understanding in molecular recognition, design and construction of novel molecular machines.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2014年第11期2442-2446,共5页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:21101037)
贵州省国际合作项目(批准号:黔科合外G字[2012]7005号)资助~~
关键词
瓜环
类轮烷
哑铃型包结配合物
超分子自组装
Cucurbit [ n ] uril
Pseudorotaxane
Dumbbell inclusion complex
Supramolecular self-assembly
