Formation of macroporous self-assembled hydrogels through cryogelation of Fmoc-Phe-Phe.

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Abstract

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-δ-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 10-100μm. 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 β-sheet structure commonly attributed to these.

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  • Industrial Biotechnology
Original languageEnglish
Pages (from-to)226-230
JournalJournal of Colloid and Interface Science
Volume368
Issue number1
Publication statusPublished - 2012
Publication categoryResearch
Peer-reviewedYes