Citation: Na-na Zhao, Wei Nie, Jun Mao, Wei-cai Wang, Xiang-ling Ji. SYNTHESIS AND PROPERTIES OF BIFUNCTIONAL MAGNETIC-OPTICAL NANOMATERIALS: Fe2O3@PDMAEMA-CAPPED II-VI SEMICONDUCTOR QUANTUM DOTS NANOCOMPOSITES[J]. Chinese Journal of Polymer Science, ;2013, 31(9): 1233-1241. doi: 10.1007/s10118-013-1318-4 shu

SYNTHESIS AND PROPERTIES OF BIFUNCTIONAL MAGNETIC-OPTICAL NANOMATERIALS: Fe2O3@PDMAEMA-CAPPED II-VI SEMICONDUCTOR QUANTUM DOTS NANOCOMPOSITES

Corresponding author: Xiang-ling Ji,
Received Date: 21 March 2013
Revised Date: 18 May 2013

Fund Project: This work was financially supported by the National Natural Science Foundation of China (No. 21274145, Innovation Group: No. 50921062).

A facile route to synthesize a new type of multifunctional nanocomposites is reported. Here, PDMAEMA (poly[2-(dimethylamino)ethyl] methacrylate) is a key macromolecule serving as a bridge between magnetic Fe2O3 nanoparticles and luminescent quantum dots. Both Fe2O3 nanoparticles and II-VI semiconductor quantum dots with a narrow size distribution are synthesized through a two-phase thermal approach. Subsequently, the atom transfer radical polymerization (ATRP) technique was applied to prepare magnetic Fe2O3@PDMAEMA core-shell nanoparticles. The thickness of PDMAEMA shell can be easily controlled by adjusting the reaction time. Finally, the ligand exchange method was exploited to modify II-VI quantum dot with amine-containing polymer of PDMAEMA, which led to quantum dot securely bound by Fe2O3@PDMAEMA core-shell nanoparticle to form a multifunctional nanocomposite. The resulting nanocomposite remains variable emission by tuning the II-VI semiconductor type and particle size and shows Hc at 49 kA/m and Tb at 16 K from Fe2O3 nanoparticles. The self-assembled behavior for the resulting samples is also discussed.
- Bifunctional nanocomposite,
- Magnetic-optical,
- PDMAEMA,
- Semiconductor,
- ATRP,
- Two-phase method
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