Talaeeshoar Farzane, Delavari H Hamid, Poursalehi Reza
Department of Materials Engineering, Tarbiat Modares University, Tehran, P.O. Box 14115-143, Iran.
Luminescence. 2018 Aug;33(5):850-854. doi: 10.1002/bio.3481. Epub 2018 Apr 23.
Band gap tunable cadmium selenide (CdSe) quantum dots (QDs) were synthesized within earthworms that emit in the middle of the visible spectrum. We demonstrated that this luminescence emission is a combination of the earthworm's protein and QD luminescence, such that the contribution of QDs in the luminescence was negligible. Eisenia fetida earthworms were used for QD biosynthesis and were exposed to different concentrations of CdCl and Na SeO in standard soil for an adequate exposure time. The size of the CdSe QDs based on the effective mass model was in agreement with the size measured from the transmission electron microscopy analysis, with an average diameter of 7 nm. Ultraviolet-visible and photoluminescence analyses confirmed the synthesis of CdSe QDs with unique absorption and luminescence at 430 nm and 605 nm, respectively.
在蚯蚓体内合成了带隙可调的硒化镉（CdSe）量子点（QDs），其发射光谱位于可见光谱的中部。我们证明这种发光是蚯蚓蛋白质和量子点发光的组合，因此量子点在发光中的贡献可以忽略不计。赤子爱胜蚓被用于量子点的生物合成，并在标准土壤中暴露于不同浓度的CdCl和Na₂SeO₃中一段适当的暴露时间。基于有效质量模型的CdSe量子点尺寸与透射电子显微镜分析测得的尺寸一致，平均直径为7纳米。紫外可见光谱和光致发光分析证实了CdSe量子点的合成，其在430纳米和605纳米处分别具有独特的吸收和发光特性。
