1258233-38-3Relevant academic research and scientific papers
Nonvolatile electrical switching behavior and mechanism of functional polyimides bearing a pyrrole unit: Influence of different side groups
Zhou, Zhuxin,Qu, Lunjun,Yang, Tingting,Wen, Jinglan,Zhang, Yi,Chi, Zhenguo,Liu, Siwei,Chen, Xudong,Xu, Jiarui
, p. 52798 - 52809 (2016)
To better understand the structure-property relationships and the mechanisms of the electronic switching behavior of functional polyimides, a new series of diamines containing a pyrrole core with different side groups were designed and synthesized. Three novel, thermally stable and aromatic polyimides (Py6FPIs) containing the as-designed diamines were prepared. They were fabricated into memory devices sandwiched between an Al top electrode and an indium-tin oxide (ITO) bottom electrode by spin-coating. The polyimides exhibited high thermal stability with glass transition temperatures (Tg) around 300 °C as determined by DMA. The memory devices were found to show nonvolatile bistable write-once-read-many (WORM) memory characteristics with diverse switching threshold voltages and ON/OFF ratios, depending on the electron affinity of the pendent groups. The low-conductivity state and the high-conductivity state could be sustained under a constant bias or a refreshing voltage pulse of 1.0 V. The switching mechanism and the memory effects were finely demonstrated with the aid of molecular simulations and electronic absorption spectra of these Py6FPIs.
Anti-Viral Compounds
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, (2010/12/29)
Compounds effective in inhibiting replication of Hepatitis C virus (“HCV”) are described. This invention also relates to processes of making such compounds, compositions comprising such compounds, and methods of using such compounds to treat HCV infection.
