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Issue 10, 2012
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Self-assembled monolayer and multilayer films based on L-lysine functionalized perylene bisimide

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Abstract

L-Lysine functionalized tetrachloroperylene bisimide (Lys-4ClPBI-Lys) was synthesized, and its aqueous self-assembly behaviours were investigated at different pH values. The zwitterionic-type Lys-4ClPBI-Lys amphiphile spontaneously self-assembled into a uniform monolayer film in water at pH ranging from 9 to 1, whereas it did not formed any ordered aggregates in solution with pH above 10. Formation of the monolayer film was believed due to synergistic interaction of directional π–π interactions and intermolecular hydrogen bonding. In contrast, the addition of copper(II) ions induced the formation of multilayer films due to inter-film ligation between Cu2+ and the α-amino acid moiety. The corresponding self-assembly behaviours and assemblies' structures were characterized using UV-vis absorption and fluorescence emission spectroscopy, cryogenic transmission electron microscopy, atomic force microscopy, and X-ray diffraction.

Graphical abstract: Self-assembled monolayer and multilayer films based on l-lysine functionalized perylene bisimide

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Publication details

The article was received on 12 Sep 2011, accepted on 26 Oct 2011 and first published on 05 Dec 2011


Article type: Paper
DOI: 10.1039/C1JM14521E
Citation: J. Mater. Chem., 2012,22, 4312-4318
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    Self-assembled monolayer and multilayer films based on L-lysine functionalized perylene bisimide

    Y. Sun, Z. Li and Z. Wang, J. Mater. Chem., 2012, 22, 4312
    DOI: 10.1039/C1JM14521E

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