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

研究成果: Article

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抜粋

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.

元の言語English
ページ(範囲)5049-5058
ページ数10
ジャーナルNanoscale
3
発行部数12
DOI
出版物ステータスPublished - 2011 12 1

ASJC Scopus subject areas

  • Materials Science(all)

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    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