期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 115, 期 39, 页码 19355-19363出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp205719k
关键词
-
资金
- National Research Foundation (NRF) of Korea (Center for Electro-Photo Behaviors in Advanced Molecular Systems) [2010-0001784]
- Ministry of Education, Science and Technology (MEST) [R31-2008-000-10059-0]
- POSCO Company
- POSTECH Foundation
- National Research Foundation of Korea [R31-2011-000-10059-0, 2008-0062044] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A new oxadiazole-containing brush polymer, poly(5-phenyl-1,3,4-oxadiazol-2-yl-[1,1'-biphenyl]carboxyloxy- n-nonyl acrylate) (PPOXBPA), was synthesized. The polymer was thermally stable up to 350 degrees C. Below the degradation temperature, it showed a glass transition, crystal melting transition, and a liquid crystal to isotropic melt transition. Its optical and electrochemical properties were also investigated. This brush polymer was found to always self-assemble into a multibilayer structure, with partial interdigitation between bristles from different layers occurring via the pi-pi stacking of the oxadiazole mesogen units. Interestingly, when the polymer film was applied in devices with a bottom and top electrode, it showed either volatile or nonvolatile memory behavior, depending on the ordering and orientation of the multibilayer structure (particularly, the pi-pi stacked oxadiazole mesogen units), which could be controlled via thermal annealing. The switching mechanisms of these electrical memory behaviors were investigated. Collectively, these results demonstrate that this chemically well-defined brush polymer is suitable for use as an active material for the low-cost, mass production of high-performance, programmable volatile and nonvolatile memory devices via control of the morphological structure.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据