Self-assembled diphenylalanine peptide microtubes covered by reduced graphene oxide/spiky nickel nanocomposite: An integrated nanobiomaterial for multifunctional applications
authors Ivanov, MS; Khomchenko, VA; Salimian, M; Nikitin, T; Kopyl, S; Buryakov, AM; Mishina, ED; Salehli, F; Marques, PAAP; Goncalves, G; Fausto, R; Paixao, JA; Kholkin, AL
nationality International
journal MATERIALS & DESIGN
author keywords Diphenylalanine (FF) peptide microtubes; Reduced graphene oxide; Nickel nanoparticles; Bio-nanocomposites; Scanning Probe Microscopy; Local current; Mechanical properties; Energy harvesting
keywords WALLED CARBON NANOTUBES; RAMAN-SPECTROSCOPY; STRONG PIEZOELECTRICITY; CHARGE-TRANSFER; OXIDE; REDUCTION; POLYPEPTIDE; COMPOSITE; SURFACE; FACILE
abstract In this work we report macroscopic integration of reduced graphene oxide decorated by nickel nanoparticles (rGO/Ni) with self-assembled diphenylalanine (FF) peptide microtubes (PMTs). The rGO/Ni nanocomposite forms planar electrode-like structure on the FF PMT surface and improves its mechanical and physical characteristics, as evidenced by the electron and scanning probe microscopy techniques. In particular, the enhancement of helical structural stability and stiffness of PMTs in the presence of rGO/Ni has been found. The interaction between rGO/Ni and FF PMTs modifies electromechanical properties of the microtubes, so that a large radial piezoresponse untypical of the pristine FF PMTs appears. Furthermore, the introduction of rGO/Ni enhances electrical conductivity of FF PMTs. The energy diagram of the PMT/rGO/Ni structure suggests an easy path for the optical conversion and light energy harvesting. The technical approach considered in this work opens up a new perspective for the fabrication of macroscopic-scale integrated rGO/Ni and FF PMTs allowing a variety of functional bio-nanostructures to be designed. (c) 2018 Elsevier Ltd. All rights reserved.
publisher ELSEVIER SCI LTD
issn 0264-1275
year published 2018
volume 142
beginning page 149
ending page 157
digital object identifier (doi) 10.1016/j.matdes.2018.01.018
web of science category Materials Science, Multidisciplinary
subject category Materials Science
unique article identifier WOS:000425878200017
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journal impact factor 4.525
5 year journal impact factor 4.753
category normalized journal impact factor percentile 81.579
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