期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 37, 期 1, 页码 53-59出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201500492
关键词
charge-transport; ionic polymer; nitroxide radical; organic electronics; postpolymerization modification
资金
- MEXT, Japan [24225003, 23550139]
- [25102541]
- [15H00766]
- Grants-in-Aid for Scientific Research [23550139] Funding Source: KAKEN
Reversible addition-fragmentation chain transfer polymerization yields reactive block copolymers bearing the pentafluorophenyl ester (PFPA) group, and subsequent Click amidation using 2,2,6,6-tetramethylpiperidine-N-oxyl- and imidazolium-functionalized primary amines produces the corresponding functional block copolymers, leading to installation of statistical radical-and ionic sites into the PFPA segment. The monolayered thin film devices fabricated using the obtained block copolymers exhibit repeatable switching of electric conductivity (on/off ratio > 10(3)) under a bias voltage, which reveals that the coexistence of radicals and ions in the same spherical domain of the copolymer layer is a prerequisite for repeatable switching memory.
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