Department of Physics, Faculty of Science, Arak University, Arak 3815688394, Iran; Institute of Nanoscience and Nanotechnology, Arak University, Arak, Iran; Department of Chemistry, Faculty of Science, Ilam University, Ilam 65315-516, Iran.
Department of Chemistry, Faculty of Science, Ilam University, Ilam 65315-516, Iran.
J Colloid Interface Sci. 2018 Nov 1;529:520-530. doi: 10.1016/j.jcis.2018.06.024. Epub 2018 Jun 12.
The effective insertion of intentional impurities in direct aqueous preparation of doped QDs still needs a chemical route with well-designed strategy. The present work reports a facile, one-pot, and aqueous-based method for green synthesis of Fe-doped ZnSe(S)/ZnSe(S) core/shell QDs with improved emission intensity. In the proposed strategy, by using a sulfur rich ZnSe(S) shell, we can provide a wider band gap shell with low structural defects in the interface between core and shell. Utilization of combined co-nucleation and growth doping strategies along with increasing the shell refluxing time all are the chemo-physical tactics which led to high intensity dopant-related emission. The antibacterial activity of the as-prepared doped core/shell QDs was investigated using agar disk diffusion method. The results show, these QDs have a significant antibacterial activity against different pathogenic bacteria comparing with the conventional antibiotics. The facility of suggested aqueous route for reaching a dopant emission, the bio-compatibility and considerable antibacterial characteristics of present QDs, nominate them as good candidates in further biological applications.
在直接水相制备掺杂量子点时，有效插入有意杂质仍需要采用精心设计策略的化学途径。本工作报道了一种简便、一锅法和基于水相的方法，用于绿色合成具有增强发射强度的 Fe 掺杂 ZnSe(S)/ZnSe(S)核/壳量子点。在所提出的策略中，通过使用富硫的 ZnSe(S)壳，可以在核和壳之间的界面处提供具有低结构缺陷的更宽带隙壳。利用共成核和生长掺杂策略的结合以及增加壳回流时间，都是导致高强度掺杂相关发射的化学物理策略。采用琼脂圆盘扩散法研究了所制备的掺杂核/壳量子点的抗菌活性。结果表明，与传统抗生素相比，这些量子点对不同的致病菌具有显著的抗菌活性。所提出的水相途径易于实现掺杂发射，本研究中量子点具有生物相容性和相当的抗菌特性，这使它们成为进一步生物应用的良好候选材料。
