Redox active polymers with phenothiazine moieties for nanoscale patterning via conductive scanning force microscopy

Ali A. Golriz, Tassilo Kaule, Jeannine Heller, Maria B. Untch, Philipp Schattling, Patrick Theato, Masaya Toda, Shinya Yoshida, Takahito Ono, Hans Jürgen Butt, Jochen Stefan Gutmann, Rüdiger Berger

Research output: Contribution to journalArticle

8 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)5049-5058
Number of pages10
JournalNanoscale
Volume3
Issue number12
DOIs
Publication statusPublished - 2011 Dec 1

ASJC Scopus subject areas

  • Materials Science(all)

Fingerprint Dive into the research topics of 'Redox active polymers with phenothiazine moieties for nanoscale patterning via conductive scanning force microscopy'. Together they form a unique fingerprint.

  • Cite this

    Golriz, A. A., Kaule, T., Heller, J., Untch, M. B., Schattling, P., Theato, P., Toda, M., Yoshida, S., Ono, T., Butt, H. J., Gutmann, J. S., & Berger, R. (2011). Redox active polymers with phenothiazine moieties for nanoscale patterning via conductive scanning force microscopy. Nanoscale, 3(12), 5049-5058. https://doi.org/10.1039/c1nr10917k