文档介绍：
“铃铛”型纳米球的制备及其存储性能
研究#
张斌1,蔡韬2,陈彧1**
5
10
15
20
25
30
35
40
(1. 华东理工大学化学与分子工程学院,教育部结构可控先进功能材料及其制备技术重点
实验室,上海 200237;
2. 新加坡国立大学化学与生物工程系,新加坡 119260)
摘要:利用溶胶-凝胶反应、蒸馏-沉淀聚合和氧化接枝聚合等材料制备技术制备了
******@******@PTEMA-g-P3HT 核双层壳式纳米球。使用 HF 侵蚀除去二氧化硅无机内壳,得到
了一种内含可移动的金纳米核的电活性高分子外壳封装的“铃铛”型纳米球
******@******@PTEMA-g-P3HT。这种纳米球拥有独特的结构和良好的单分散性,能规整地嵌入聚
苯乙烯薄膜中。通过调变活性聚合物薄膜中“铃铛”型纳米球的含量(5,10,25 和 50 wt%),
探讨了器件 Al/******@******@PTEMA-g-P3HT+PS/ITO 的存储性能。器件的存储机制归属为充当
电子给体的 PTEMA-g-P3HT 外壳和充当电子受体的金纳米核之间的场诱导电荷转移。
关键词:非易失性存储;核壳式纳米粒子;氧化接枝聚合
中图分类号:O631
Preparation of Hybrid Nanorattles and Their Memory
Effect Applications
ZHANG Bin1, CAI Tao2, CHEN Yu1
(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 ******@******@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 ******@******@PTEMA-g-P3HT
core-double shell nanospheres, prepared bined sol-gel reaction, distillation-precipitation
polymerization and oxidative graft polymerization. The ******@******@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/******@******@PTEMA-g-P3HT+PS/ITO devices can be
tuned by varying the ******@******@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
0 引言
以纳米粒子作为一个可移动的核置于空心壳内,形成的“铃铛”结构的微球具有密度低,
比表面积大,多功能性和负载容量大等优点,在催化,控释,光子和电子等