Two-dimensional nanostructures by the assembly of n-type tetraazaanthracene-based conjugated molecules
He C, Wu D, Zhang F, Xue M, Zhuang X, Qiu F, Feng X (2013)
Publication Type: Journal article
Publication year: 2013
Journal
Book Volume: 14
Pages Range: 2954-2960
Journal Issue: 13
Abstract
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. Ruling chains: A set of n-type conjugated molecules containing a tetraazaanthracene core and different alkyl-chain arms is presented. In binary solvent mixtures, self-assembly into 2D sheet-like nanostructures takes place (see picture). By using different alkyl chains, morphology can be sensibly modified. The weak interactions arising from the heteroatoms in the conjugated backbones play a key role in the formation and stabilization of the layered structures. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Involved external institutions
China (CN)How to cite
APA:
He, C., Wu, D., Zhang, F., Xue, M., Zhuang, X., Qiu, F., & Feng, X. (2013). Two-dimensional nanostructures by the assembly of n-type tetraazaanthracene-based conjugated molecules. ChemPhysChem, 14(13), 2954-2960. https://doi.org/10.1002/cphc.201300444
MLA:
He, Chunyang, et al. "Two-dimensional nanostructures by the assembly of n-type tetraazaanthracene-based conjugated molecules." ChemPhysChem 14.13 (2013): 2954-2960.
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