Nanoscale Piezoelectric Properties of Self-Assembled Fmoc-FF Peptide Fibrous Networks

abstract

Fibrous 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 beta-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.

keywords

PIEZORESPONSE FORCE MICROSCOPY; INFRARED-SPECTROSCOPY; BETA-SHEETS; SUPRAMOLECULAR HYDROGELS; SECONDARY STRUCTURE; NANOTUBES; ARCHITECTURE; DIPEPTIDE; NANOSTRUCTURES; NANOMATERIALS

subject category

Science & Technology - Other Topics; Materials Science

authors

Ryan, K; Beirne, J; Redmond, G; Kilpatrick, JI; Guyonnet, J; Buchete, NV; Kholkin, AL; Rodriguez, BJ

our authors

acknowledgements

The work is supported by the European Commission within FP7Marie Curie Initial Training Network

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