Che Dongchen, Zhu Xiaoxu, Wang Hongzhi, Duan Yourong, Zhang Qinghong, Li Yaogang
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201602, People's Republic of China.
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201602, People's Republic of China.
J Colloid Interface Sci. 2016 Feb 1;463:1-7. doi: 10.1016/j.jcis.2015.10.039. Epub 2015 Oct 23.
Efficient synthetic methods for near-infrared quantum dots with good biophysical properties as bioimaging agents are urgently required. In this work, a simple and fast synthesis of highly luminescent, near-infrared AgInSe2-ZnSe quantum dots (QDs) with tunable emissions in aqueous media is reported. This method avoids high temperature and pressure and organic solvents to directly generate water-dispersible AgInSe2-ZnSe QDs. The photoluminescence emission peak of the AgInSe2-ZnSe QDs ranged from 625 to 940nm, with quantum yields up to 31%. The AgInSe2-ZnSe QDs with high quantum yield, near-infrared and low cytotoxic could be used as good cell labels, showing great potential applications in bio-imaging.
迫切需要高效的合成方法来制备具有良好生物物理性质的近红外量子点作为生物成像剂。在这项工作中，报道了一种在水性介质中简单快速合成具有可调发射的高发光近红外AgInSe₂-ZnSe量子点（QDs）的方法。该方法避免了高温高压和有机溶剂，直接生成水分散性AgInSe₂-ZnSe量子点。AgInSe₂-ZnSe量子点的光致发光发射峰范围为625至940nm，量子产率高达31%。具有高量子产率、近红外和低细胞毒性的AgInSe₂-ZnSe量子点可作为良好的细胞标记物，在生物成像中显示出巨大的潜在应用。
