Nanoscale Piezoelectric Properties of Self-Assembled Fmoc–FF Peptide Fibrous Networks
2015; American Chemical Society; Volume: 7; Issue: 23 Linguagem: Inglês
10.1021/acsami.5b01251
ISSN1944-8252
AutoresKate Ryan, Jason Beirne, Gareth Redmond, Jason I. Kilpatrick, Jill Guyonnet, Nicolae‐Viorel Buchete, Andréi L. Kholkin, Brian J. Rodriguez,
Tópico(s)Silk-based biomaterials and applications
ResumoFibrous peptide networks, such as the structural framework of self-assembled fluorenylmethyloxycarbonyl diphenylalanine (Fmoc-FF) nanofibrils, have mechanical properties that could successfully mimic natural tissues, making them promising materials for tissue engineering scaffolds. These nanomaterials have been determined to exhibit shear piezoelectricity using piezoresponse force microscopy, as previously reported for FF nanotubes. Structural analyses of Fmoc-FF nanofibrils suggest that the observed piezoelectric response may result from the noncentrosymmetric nature of an underlying β-sheet topology. The observed piezoelectricity of Fmoc-FF fibrous networks is advantageous for a range of biomedical applications where electrical or mechanical stimuli are required.
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