Self-assembly of two different hierarchical nanostructures on either side of an organic supramolecular film in one step.
We fabricated different hierarchical organic nanostructures on each side of a supramolecular film, by using hydrogen-bonding interactions between tetrapyridylporphyrin and benzene-1,3,5-tricarboxylic acid at the H2O/CHCl3 interface. The surface of the film that faces water is composed of nanoprism arrays, whereas the surface facing CHCl3 is composed of three-dimensional sunflower-like hierarchical micro- and nanostructures. FTIR spectral evidence showed that all pyridyl groups of the tetrapyridylporphyrin hydrogen bonded to the carboxylic acid groups of 1,3,5-benzene-tricarboxylic acid. The aggregation modes of porphyrin presented in this supramolecular film were studied by UV/Vis and fluorescence spectroscopy. Moreover, each side of the film exhibits distinct soakage properties.
State Key Laboratory of Coordination Chemistry, National Laboratory of Solid State Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P.R. China.
Naien E
NE
Shi
Gui
G
Yin
Min
M
Han
Lei
L
Jiang
Zheng
Z
Xu