期刊
NANOSCALE
卷 7, 期 17, 页码 7659-7664出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr00871a
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资金
- Chinese Natural Science Foundation [21371128, 21336005]
- Chinese-Singapore Joint Project [2012DFG41900]
- Qing-Lan Project of Jiangsu Province
Multilevel organic memories have attracted considerable interest due to their high capacity of data storage. Despite advances, the search for multilevel memory materials still remains a formidable challenge. Herein, we present a rational design and synthesis of a class of polymers containing an azobenzene-pyridine group (PAzo-py) and its derivatives, for multilevel organic memory storage. In this design, a metal complex (M(Phen)Cl-2, M = Cu, Pd) is employed to modify the HOMO-LUMO energy levels of azo polymers, thereby converting the memory state from binary to ternary. More importantly, this approach enables modulating the energy levels of azo polymers by varying the coordination metal ions. This makes the achievement of high performance multilevel memories possible. The ability to tune the bandgap energy of azo polymers provides new exciting opportunities to develop new materials for high-density data storage.
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