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Issue 24, 2009
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Self-assembled peptidenanorods as building blocks of fractal patterns

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Abstract

Hierarchical self-assembly of peptide molecules has become an attractive approach of fabricating multifunctional advanced materials. Here we report fractal structures hierarchically self-assembled from a simple dipeptide derivative, Fmoc-phenylalanine-tyrosine-phosphate (FPTP). Scanning electron microscopy (SEM) analysis revealed that dipeptides first self-assembled into nanorods with length on the order of one micrometre in solution, which are prerequisite for the formation of fractals on a solid substrate. The fractal dimension analysis indicated that fractals were assembled following the diffusion-limited aggregation (DLA) mechanism. We present for the first time the evidence of nanorods as diffusion units for forming fractals on a surface. This nanorod-mediated DLA model explains and suggests a new strategy for forming fractal patterns from self-assembling molecules.

Graphical abstract: Self-assembled peptide nanorods as building blocks of fractal patterns

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Supplementary files

Article information


Submitted
22 Sep 2009
Accepted
19 Oct 2009
First published
16 Nov 2009

Soft Matter, 2009,5, 4893-4898
Article type
Paper

Self-assembled peptide nanorods as building blocks of fractal patterns

W. Wang and Y. Chau, Soft Matter, 2009, 5, 4893
DOI: 10.1039/B919782F

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