A Novel Bat-Shaped Dicyanomethylene-4H-pyran-Functionalized Naphthalimide for Highly Efficient Solution-Processed Multilevel Memory Devices

作者：Zhang, Qi-jian; Miao, Shi-feng; Li, Hua^*; He, Jing-hui; Li, Na-jun; Xu, Qing-feng; Chen, Dong-yun; Lu, Jian-mei^*

来源：Chemistry-An Asian Journal, 2017, 12(12): 1374-1380.

DOI：10.1002/asia.201700438

• electrochemistry
• pi interactions
• stacking interactions
• small molecule
• solvent processing

Small-molecule-based multilevel memory devices have attracted increasing attention because of their advantages, such as super-high storage density, fast reading speed, light weight, low energy consumption, and shock resistance. However, the fabrication of small-molecule-based devices always requires expensive vacuum-deposition techniques or high temperatures for spin-coating. Herein, through rational tailoring of a previous molecule, DPCNCANA (4,4-(6,6-bis(2-octyl-1,3-dioxo-2,3-dihydro-1H-benzo[de]isoquinolin-6-yl)-9H,9H-[3,3-bicarbazole]-9,9-diyl)dibenzonitrile), a novel bat-shaped A-D-A-type (A-D-A=acceptor-donor-acceptor) symmetric framework has been successfully synthesized and can be dissolved in common solvents at room temperature. Additionally, it has a low-energy bandgap and dense intramolecular stacking in the film state. The solution-processed memory devices exhibited high-performance nonvolatile multilevel data-storage properties with low switching threshold voltages of about -1.3 and -2.7V, which is beneficial for low power consumption. Our result should prompt the study of highly efficient solution-processed multilevel memory devices in the field of organic electronics.

• 出版日期2017-6-19
• 单位苏州大学