Preparation of Hybrid Nanorattles and Their Memory Effect Applications

• 1、Key Lab for Adv. Mater., School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237
• 2、Department of Chemical & Biomolecular Engineering, National University of Singapore, Singapore 119260

Abstract：Monodisperd hairy Au@air@PTEMA-g-P3HT hybrid nanorattles, with a movable Au nanocore in the cavity and electroactive P3HT polymer brushes on the exterior surface, have been synthesized by selective etching of the silica inner shell of the hairy Au@SiO2@PTEMA-g-P3HT core-double shell nanospheres, prepared from combined sol-gel reaction, distillation-precipitation polymerization and oxidative graft polymerization. The Au@air@PTEMA-g-P3HT hybrid nanorattles can be readily dispersed in toluene and uniformly integrated into polystyrene (PS) thin films. The memory performance of the Al/Au@air@PTEMA-g-P3HT+PS/ITO devices can be tuned by varying the Au@air@PTEMA-g-P3HT content (5, 10, 25 and 50 wt%) in the active polymer layer. The switching mechanism in the present device can be ascribed to the field-induced charge transfer between the electron-donating PTEMA-g-P3HT shells and the electron-accepting Au nanocores.

Keywords： non-volatile memory effect core-shell nanoparticles oxidative graft polymerization