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以Na2SeO3,CdCl2.2.5H2O为Se源和Cd源,还原型谷胱甘肽(GSH)作为还原剂和稳定剂,真正成功实现了一锅法水相制备发白光ZnxCd1-xSe量子点(QDs),通过调节Zn2+与Cd2+的比例改变ZnxCd1-xSe量子点的光学性质。实验结果表明,当Zn/Cd比增大时,ZnxCd1-xSe量子点的荧光光谱和激子吸收峰均发生蓝移,证明这种混晶量子点的形成,而且,Zn0.89Cd0.11Se的光学性能最佳。通过粉末X射线衍射仪(XRD)、透射电子显微镜(TEM)表征所制备的样品是立方体结构,粒径约为3 nm。并将一定量的量子点与不同体积血红蛋白结合,为以后量子点在生物标记及医学检测中的应用奠定了工作基础。
With Na2SeO3, CdCl2.2.5H2O as Se source and Cd source, and reduced glutathione (GSH) as reductant and stabilizer, the white light ZnxCd1-xSe quantum dots (QDs) The optical properties of ZnxCd1-xSe QDs were changed by adjusting the ratio of Zn2 + to Cd2 +. The experimental results show that the fluorescence spectra and exciton absorption peaks of ZnxCd1-xSe quantum dots are blue-shifted when the Zn / Cd ratio is increased, which confirms the formation of such mixed crystal quantum dots. Moreover, the optical properties of Zn0.89Cd0.11Se Best performance. Samples prepared by powder X-ray diffractometry (XRD) and transmission electron microscopy (TEM) characterization were cubic structures with a particle size of about 3 nm. And a certain amount of quantum dots with different volumes of hemoglobin combined for later quantum dots in biomarkers and medical testing laid the foundation for the application.