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Issue 12, 2011
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Redox active polymers with phenothiazine moieties for nanoscale patterningvia conductive scanning force microscopy

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Abstract

Redox active polymers with phenothiazine moieties have been synthesized by Atomic Transfer Radical Polymerization (ATRP). These novel polymers reveal bistable behaviour upon application of a bias potential above the oxidation threshold value. Using conductive Scanning Force Microscopy, two distinguishable conductivity levels were induced on a nanoscale level. These levels were related to a high conducting “On” and a low conducting “Off” state. The “On” state is generated by the oxidation of the phenothiazine side chains to form stable phenothiazine radical cations. The formation and stability of the radical sites was examined by cyclic voltammetry, electron spin resonance and optical spectroscopy. Polymers with phenothiazine moieties show the ability to retain their redox state for several hours and can therefore be used for nonvolatile organic memory devices. Furthermore, thin films made from the phenothiazine containing polymers show high mechanical nanowear stability.

Graphical abstract: Redox active polymers with phenothiazine moieties for nanoscale patterningvia conductive scanning force microscopy

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Publication details

The article was received on 22 Jul 2011, accepted on 21 Sep 2011 and first published on 31 Oct 2011


Article type: Paper
DOI: 10.1039/C1NR10917K
Citation: Nanoscale, 2011,3, 5049-5058
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    Redox active polymers with phenothiazine moieties for nanoscale patterningvia conductive scanning force microscopy

    A. A. Golriz, T. Kaule, J. Heller, M. B. Untch, P. Schattling, P. Theato, M. Toda, S. Yoshida, T. Ono, H. Butt, J. S. Gutmann and R. Berger, Nanoscale, 2011, 3, 5049
    DOI: 10.1039/C1NR10917K

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