An investigation of the conductivity of peptide nanotube networks prepared by enzyme-triggered self-assembly

Nanoscale
Haixia XuRein V Ulijn

Abstract

We demonstrate that nanotubular networks formed by enzyme-triggered self-assembly of Fmoc-L3 (9-fluorenylmethoxycarbonyl-tri-leucine) show significant charge transport. FT-IR, fluorescence spectroscopy and wide angle X-ray scattering (WAXS) data confirm formation of beta-sheets that are locked together viapi-stacking interactions. Molecular dynamics simulations confirmed the pi-pi stacking distance between fluorenyl groups to be 3.6-3.8 A. Impedance spectroscopy demonstrated that the nanotubular xerogel networks possess minimum sheet resistances of 0.1 MOmega/sq in air and 500 MOmega/sq in vacuum (pressure: 1.03 mbar) at room temperature, with the conductivity scaling linearly with the mass of peptide in the network. These materials may provide a platform to interface biological components with electronics.

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Citations

Oct 15, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Claire TangAlberto Saiani
Jun 29, 2010·Chemical Communications : Chem Comm·Jan W Sadownik, Rein V Ulijn
Oct 1, 2011·Chemical Communications : Chem Comm·Michael E Hahn, Nathan C Gianneschi
Jul 9, 2013·Physical Chemistry Chemical Physics : PCCP·Nadav Amdursky
Jul 9, 2013·Journal of Nanobiotechnology·Anna PetrovGerald F Audette
Jan 9, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Abhishek BaralArindam Banerjee
Nov 6, 2014·Journal of the American Chemical Society·Yanqiu WangMyongsoo Lee
May 20, 2015·International Journal of Molecular Sciences·Dnyaneshwar B Rasale, Apurba K Das
Jan 23, 2016·Physical Chemistry Chemical Physics : PCCP·I Ramos SasselliT Tuttle
Jan 12, 2016·Nanoscale·Jenny Lerner YardeniNurit Ashkenasy
Oct 6, 2011·The Journal of Physical Chemistry Letters·Pim W J M FrederixTell Tuttle
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Jul 4, 2012·Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology·Anna Petrov, Gerald F Audette
Nov 17, 2010·Macromolecular Bioscience·Dave J Adams
Aug 14, 2012·Chemistry : a European Journal·Sangita RoyRein V Ulijn
Jun 13, 2014·Angewandte Chemie·Ian W Hamley
Sep 30, 2015·Biomacromolecules·Yousef M Abul-Haija, Rein V Ulijn
Nov 6, 2015·ACS Applied Materials & Interfaces·Cristina BerdugoRein V Ulijn
May 3, 2011·Biomaterials·Richard J WilliamsPatrick G Hartley
Jul 16, 2015·Langmuir : the ACS Journal of Surfaces and Colloids·Yuanyuan HuJingcheng Hao
Jun 7, 2015·Journal of Colloid and Interface Science·Salmah AwhidaDave J Adams
Nov 10, 2010·Chemical Communications : Chem Comm·Jan W SadownikRein V Ulijn
Nov 26, 2011·Nanoscale·Mordechay MizrahiNurit Ashkenasy
Nov 8, 2014·Organic & Biomolecular Chemistry·Stefanie C LangeBart Jan Ravoo
Jul 9, 2016·Angewandte Chemie·Denis IvnitskiNurit Ashkenasy
Jun 2, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Kelly A HoutonDave J Adams
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Jan 16, 2018·Macromolecular Rapid Communications·Emily R DraperDave J Adams
Mar 5, 2015·MBio·Nikhil S MalvankarDerek R Lovley

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