期刊
CHEMPHYSCHEM
卷 14, 期 13, 页码 2954-2960出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.201300444
关键词
nanostructures; noncovalent interactions; self-assembly; tetraazaanthracene; two-dimensional structures
资金
- Natural Science Foundation of China [NSFC. 21174083]
- Shanghai Committee of Science and Technology [11JC1405400]
- Shanghai Pujiang Program [12J1405300]
- Shanghai Jiao Tong University
On the basis of our previous communication concerning a new family of thiophene-armed tetraazaanthracene molecules, we present a further intensive investigation on this class of compounds substituted with different alkyl chains and their self-assembled two-dimensional (2D) nanostructures. These tetraazaanthracene molecules with different alkyl chains were prepared in good yields using the synthetic strategy we developed. In addition to the expected typical n-type character, one compound exhibited aggregation behavior upon electrochemical reduction. Moreover, all molecules in the neutral state showed a strong tendency to aggregate in a binary solvent, as confirmed by optical spectral measurements. To investigate such self-assembly behavior, a phase-transfer method with a dichloromethane/methanol (2:3) binary solvent system was used to prepare the nanostructures. By means of atomic force microscopy, transmission electron microscopy, and X-ray diffraction, we found that the morphology of assembled 2D sheet-like structures could be adjusted by varying the alkyl chain. The weak interactions arising from the heteroatoms (N and S) in the conjugated backbones play a key role in the formation and stabilization of layered structures.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据