Strong aggregation and directional assembly of aromatic oligoamide macrocycles.
Aromatic oligoamide macrocycles exhibit strong preference for highly directional association. Aggregation happens in both nonpolar and polar solvents but is weakened as solvent polarity increases. The strong, directional assembly is rationalized by the cooperative action of dipole-dipole and π-π stacking interactions, leading to long nanotubular assemblies that are confirmed by SEM, TEM, AFM, and XRD. The persistent nanotubular assemblies contain non-collapsible hydrophilic internal pores that mediate highly efficient ion transport observed with these macrocycles and serve as cylindrical sites for accommodating guests such as metal ions.
College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, Sichuan, China.
Yongan
Y
Yang
Wen
W
Feng
Jinchuan
J
Hu
Shuliang
S
Zou
Rongzhao
R
Gao
Kazuhiro
K
Yamato
Mark
M
Kline
Zhonghou
Z
Cai
Yi
Y
Gao
Yibing
Y
Wang
Yibao
Y
Li
Yanlian
Y
Yang
Lihua
L
Yuan
Xiao Cheng
XC
Zeng
Bing
B
Gong