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복잡계 자기조립 연구단
복잡계 자기조립 연구단
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High-Performance n-Type Electrical Memory and Morphology-Induced Memory-Mode Tuning of a Well-Defined Brush Polymer Bearing Perylene Diimide Moieties

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Title
High-Performance n-Type Electrical Memory and Morphology-Induced Memory-Mode Tuning of a Well-Defined Brush Polymer Bearing Perylene Diimide Moieties
Author(s)
Kim, YY; Brian J. Ree; Kido, M; Ko, YG; Ishige, R; Hirai, T; Wi, D; Kim, J; Won Jong Kim; Takahara, A; Ree, M
Publication Date
2015-10
Journal
ADVANCED ELECTRONIC MATERIALS, v.1, no.10, pp.1500197 -
Publisher
WILEY-BLACKWELL
Abstract
Poly(N-(1-hexylheptyl)-N'-(12-oxydodecyl)perylene-3,4,9,10-tetracarboxyldi-imide acrylate) (PAcPDI), a perylene diimide (PDI) containing brush polymer, is synthesized, revealing good solubility in organic solvents, excellent thermal stability up to around 340 degrees C, and two melting transitions over 130-220 degrees C. The self-assembly and n-type memory characteristics of PAcPDI in nanoscale thin films are quantitatively investigated. As-cast films of PAcPDI are completely amorphous and the PDI units nevertheless formed p-p stacks favorably. However, the PAcPDI molecules can self-assemble via thermal annealing, developing a well-ordered horizontal lamellar structure with monomorphic or polymorphic monoclinic PDI crystals. The formation of monomorphic or polymorphic monoclinic crystals is attributed to various p-p stack modes of the PDI units, and is shown to be dependent on the film thickness. The differences in the thin film morphologies are directly reflected into the electrical memory behavior. The thermally annealed films demonstrate high-performance n-type unipolar volatile memory behavior within the thickness range of 12-31 nm. The as-cast films show n-type unipolar nonvolatile or volatile memory behavior in the range of 12-53 nm. The memory mode of PAcPDI films can be tuned by changing either the morphology or the film thickness. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
URI
https://pr.ibs.re.kr/handle/8788114/2466
ISSN
2199-160X
Appears in Collections:
Center for Self-assembly and Complexity(복잡계 자기조립 연구단) > Journal Papers (저널논문)
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