Abstract
We demonstrate that nanotubular networks formed by enzyme-triggered self-assembly of Fmoc-L-3 (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 via pi-stacking interactions. Molecular dynamics simulations confirmed the pi-pi stacking distance between fluorenyl groups to be 3.6-3.8 angstrom. Impedance spectroscopy demonstrated that the nanotubular xerogel networks possess minimum sheet resistances of 0.1 M Omega/sq in air and 500 M Omega/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.
| Language | English |
|---|---|
| Pages | 960-966 |
| Number of pages | 7 |
| Journal | Nanoscale |
| Volume | 2 |
| Issue number | 6 |
| Early online date | 6 Apr 2010 |
| DOIs | |
| Publication status | Published - 2010 |
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Keywords
- investigation
- conductivity
- peptide nanotube networks
- enzyme-triggered self-assembly
Cite this
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An investigation of the conductivity of peptide nanotube networks prepared by enzyme-triggered self-assembly. / Xu, Haixia; Das, Apurba K.; Horie, Masaki; Shaik, Majeed S.; Smith, Andrew M.; Luo, Yi; Lu, Xiaofeng; Collins, Richard; Liem, Steven Y.; Song, Aimin; Popelier, Paul L. A.; Turner, Michael L.; Xiao, Ping; Kinloch, Ian A.; Ulijn, Rein V.
In: Nanoscale, Vol. 2, No. 6, 2010, p. 960-966.Research output: Contribution to journal › Article
TY - JOUR
T1 - An investigation of the conductivity of peptide nanotube networks prepared by enzyme-triggered self-assembly
AU - Xu, Haixia
AU - Das, Apurba K.
AU - Horie, Masaki
AU - Shaik, Majeed S.
AU - Smith, Andrew M.
AU - Luo, Yi
AU - Lu, Xiaofeng
AU - Collins, Richard
AU - Liem, Steven Y.
AU - Song, Aimin
AU - Popelier, Paul L. A.
AU - Turner, Michael L.
AU - Xiao, Ping
AU - Kinloch, Ian A.
AU - Ulijn, Rein V.
PY - 2010
Y1 - 2010
N2 - We demonstrate that nanotubular networks formed by enzyme-triggered self-assembly of Fmoc-L-3 (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 via pi-stacking interactions. Molecular dynamics simulations confirmed the pi-pi stacking distance between fluorenyl groups to be 3.6-3.8 angstrom. Impedance spectroscopy demonstrated that the nanotubular xerogel networks possess minimum sheet resistances of 0.1 M Omega/sq in air and 500 M Omega/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.
AB - We demonstrate that nanotubular networks formed by enzyme-triggered self-assembly of Fmoc-L-3 (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 via pi-stacking interactions. Molecular dynamics simulations confirmed the pi-pi stacking distance between fluorenyl groups to be 3.6-3.8 angstrom. Impedance spectroscopy demonstrated that the nanotubular xerogel networks possess minimum sheet resistances of 0.1 M Omega/sq in air and 500 M Omega/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.
KW - investigation
KW - conductivity
KW - peptide nanotube networks
KW - enzyme-triggered self-assembly
UR - http://www.scopus.com/inward/record.url?scp=77953248481&partnerID=8YFLogxK
U2 - 10.1039/b9nr00233b
DO - 10.1039/b9nr00233b
M3 - Article
VL - 2
SP - 960
EP - 966
JO - Nanoscale
T2 - Nanoscale
JF - Nanoscale
SN - 2040-3364
IS - 6
ER -