Self-Assembly of Achiral Shape Amphiphiles into Multi-Walled Nanotubes via Helicity-Selective Nucleation and Growth

被引:12
|
作者
Ren, Li-Jun [1 ,2 ]
Wu, Han [1 ,2 ]
Hu, Min-Biao [1 ,2 ]
Wei, Yu-Han [5 ]
Lin, Yue [4 ]
Wang, Wei [1 ,2 ,3 ]
机构
[1] Nankai Univ, Coll Chem, Ctr Synthet Soft Mat, Key Lab Funct Polymer Mat,Minist Educ, Tianjin 300071, Peoples R China
[2] Nankai Univ, Inst Polymer Chem, Coll Chem, Tianjin 300071, Peoples R China
[3] Nankai Univ, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300071, Peoples R China
[4] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
[5] Qingdao Univ Sci & Technol, Sch Polymer Sci & Engn, Qingdao 266061, Shandong, Peoples R China
基金
中国国家自然科学基金;
关键词
amphiphiles; helicity; nanotubes; nucleation-growth process; self-assembly; MOLECULAR JANUS PARTICLES; CHIRAL LIPID TUBULES; DOUBLE-BONDS; CO-CLUSTER; POLYOXOMETALATE; MORPHOLOGY; MEMBRANES; BILAYERS; DESIGN;
D O I
10.1002/asia.201800005
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Soft nanotubes are normally constructed from chiral amphiphiles through helical self-assembly. Yet, how to self-assemble achiral molecules into nanotubes is still a challenge. Here, we report the nanotube construction with achiral shape amphiphiles through helical self-assembly and also unravel the formation mechanisms. The amphiphiles have a dumbbell shape and are composed by covalently linking three achiral moieties together: two unlike clusters and an organic tether. The difference in polarity between the unlike clusters drives the amphiphiles to self-assemble into single- and multi-walled nanotubes as well as intermediates. Analysis of the key intermediates unravels the self-assembly mechanism of helicity-selective nucleation and growth. Meanwhile, direct visualization of the individual clusters in the ribbons displays a two-dimensional deformed hexagonal lattice. Thus, we speculate that it is the lattice deformation that creates anisotropic tension along different directions of the ribbon which further results in the formation of helical ribbons towards nanotubes by amphiphiles.
引用
收藏
页码:775 / 779
页数:5
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