Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 368, Issue -, Pages 226-230Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2011.11.006
Keywords
Hydrogels; Macroporous; Dipeptides; Peptides; Self-assembly
Categories
Funding
- Swedish research council
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In this study, it was found that macroporous hydrogels were formed when self-assembly of fluorenyl-9-methoxycarbonyl (Fmoc)-diphenylalanine (Phe-Phe) peptides was induced using glucono-delta-lactone (GdL) in apparently frozen samples. Formed cryogels exhibited a heterogeneous structure with pore walls of densely packed fibres of assembled dipeptides and pores in the range 10-100 mu m. Hydrogels formed from the same composition above the freezing point exhibited a homogenous structure without any apparent porosity. The formed gels were characterised using microscopy techniques, CD-spectroscopy and stress sweeps. The cryogels exhibited less mechanical strength than the hydrogels that might be due to the heterogeneous structure of the former. It appeared that the self-assembled peptide both in the cryo- and hydrogel maintained the beta-sheet structure commonly attributed to these. (C) 2011 Elsevier Inc. All rights reserved.
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