Toggle Main Menu Toggle Search

ePrints

Preparation and Characterization of Conductive and Photoluminescent DNA-Templated Polyindole Nanowires

Lookup NU author(s): Dr Reda Hassanien, Mariam Al Hinai, Professor Lidija Siller, Professor Nick Wright, Professor Andrew Houlton, Dr Ben Horrocks

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


Abstract

Polyindole (PIn) nanowires were formed on a lambda-DNA template by chemical oxidation of indole using aqueous FeCl3. The resulting nanowires are smooth, regular, conductive and had diameters in the range of 5-30 nm. These features allow them to be aligned by molecular combing and studied by scanned conductance microscopy, conductive AFM, and two-terminal I - V measurements. Using this combination of measurements, we find that the conductivity of PIn/DNA nanowires is between 2.5 and 40 S cm(-1) at room temperature, which is substantially greater than that in previous reports on the bulk polyindole conductivity (typically 10(-2)-10(-1) S cm(-1)). The conductance at zero bias shows an Arrhenius-type of dependence on temperature over the range of 233 to 373 K, and the values observed upon heating and cooling are repeatable within 5%; this behavior is consistent with a hopping mechanism of conductivity.


Publication metadata

Author(s): Hassanien R, Al-Hinai M, Al-Said SAF, Little R, Siller L, Wright NG, Houlton A, Horrocks BR

Publication type: Article

Publication status: Published

Journal: ACS Nano

Year: 2010

Volume: 4

Issue: 4

Pages: 2149-2159

Print publication date: 10/03/2010

Acceptance date: 23/02/2010

ISSN (print): 1936-0851

ISSN (electronic): 1936-086X

Publisher: American Chemical Society

URL: http://dx.doi.org/10.1021/nn9014533

DOI: 10.1021/nn9014533


Altmetrics

Altmetrics provided by Altmetric


Actions

    Link to this publication


Share