Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 22, Issue 11, Pages 4927-4931Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm15997j
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Funding
- Nature Science Foundation of China [20834006]
- 973 Program [2011CB935703, 2009CB623603]
- Fundamental Research Funds for the Central Universities
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The controlled preparation of organic nanotubes via self-assembly of polycyclic aromatics is a contemporary challenge for supramolecular science. Here, we show that the self-assembly of pyrene-containing cationic amphiphiles, 3-(4-(pyren-6-yl)phenoxy)propan-1-ammonium salts (PyPA-Cl, PyPA-Br, and PyPA-SO4), can form high aspect ratio nanotubes with a uniform diameter distribution. We have also demonstrated that the counter anions also play an important role in the self-assembling results. The self-assembly of pyrene-containing cationic amphiphilic molecules with monovalent anions (Cl- and Br-) forms exclusively uniform nanotubes; whereas the self-assembly of amphiphiles with bivalent counter anions (SO42-) forms exclusively high aspect ratio nanoribbons. Furthermore, we have found that the diameter of the PyPA-Br nanotubes is larger than that of the PyPA-Cl nanotubes. The research results reported herein represent an important step towards the preparation of functional nanostructures with controlled 1D architectures.
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