The method of synthesizing a water-soluble quantum dots ZnSe doped with transition metals

The present invention discloses a method for synthesizing a water-soluble transition metal-doped ZnSe quantum dots, belonging to the technical field of preparing materials. The present invention is core-shell structure nano-materials, using the idea of ​​replacing the ion-doped quantum dots synthesized. This doping method is divided into two steps, the first step in the synthesis MnSe / ZnSe core-shell structure nano-particles, a second step of doping elements were added to different MnSe / ZnSe nanoparticle solution under a nitrogen protection, followed by the reaction at room temperature or under heating to 100 deg.] C to obtain a different element-doped ZnSe quantum dots. Synthesis of the present invention has a rich QDs doped optical properties can be synthesized more fluorescent colors. By simply changing the content of the second reaction doping elements added, you can regulate the amount of doping element, while the regulation of the position of the peak fluorescence quantum dots, Ag: ZnSe quantum dots may 454nm red shifted fluorescence peak 486nm, Pb: 498nm red fluorescence peak ZnSe quantum dots may be moved to 522nm.