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首页> 外文期刊>RSC Advances >Towards the realization of luminescence from visible emitting trivalent lanthanides (Sm, Eu, Tb, Dy) in polar zinc sulfide nanoparticles: evaluation of in vitro cytotoxicity
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Towards the realization of luminescence from visible emitting trivalent lanthanides (Sm, Eu, Tb, Dy) in polar zinc sulfide nanoparticles: evaluation of in vitro cytotoxicity

机译：在极性硫化锌纳米粒子中实现可见光发射的三价镧系元素（Sm，Eu，Tb，Dy）的发光：体外细胞毒性评估

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摘要

This work reports on the realization of luminescence from four visible emitting trivalent lanthanide (Ln) cations [samarium (Sm), europium (Eu), terbium (Tb) and dysprosium (Dy)] in polar zinc sulfide nanoparticles, Zn(Ln)S. Among the Zn(Ln) S nanoparticles studied, noticeable lanthanide cation centered luminescence has only been realized from the Zn(Tb) S and Zn(Eu) S nanoparticles in water, whereas no such effect has been observed in the corresponding Sm and Dy containing nanoparticles. In all the nanoparticles with characteristic lanthanide luminescence, the nanoparticles were found to be acting as an optical antenna and protector matrix, in order to realize luminescence from the respective lanthanide cations. The results have been rationalized with the lanthanide cations acting as charge (hole and/or electron) traps in the semiconductor nanoparticle matrix along with associated environmental effects. A comparison of the corresponding hydrophobic Zn(Tb) S nanoparticles reveal significant differences in photophysical properties. Finally, the hydrophilic Zn(Tb) S nanoparticles have been examined for in vitro cytotoxicity and the results indicate potential anti-cancer therapy for human mammary adenocarcinoma cells (MDA-MB-231) with the capability of cellular imaging.
机译：这项工作报告了在极性硫化锌纳米颗粒Zn（Ln）S中从四个可见发射三价镧系元素（Ln）阳离子[sa（Sm），euro（Eu），b（Tb）和（Dy）]发光的实现。 。在研究的Zn（Ln）S纳米颗粒中，仅从水中的Zn（Tb）S和Zn（Eu）S纳米颗粒实现了显着的镧系元素阳离子中心发光，而在相应的含Sm和Dy的溶液中未观察到这种作用纳米粒子。在所有具有镧系元素特征发光的纳米颗粒中，发现纳米颗粒起着光学天线和保护基质的作用，以实现各自镧系元素阳离子的发光。镧系阳离子作为半导体纳米粒子基质中的电荷（空穴和/或电子）陷阱，以及相关的环境影响，已经使结果合理化。相应的疏水性Zn（Tb）S纳米粒子的比较显示了光物理性质的显着差异。最后，已经对亲水性Zn（Tb）S纳米颗粒进行了体外细胞毒性检查，结果表明具有细胞成像功能的人乳腺腺癌细胞（MDA-MB-231）可能具有抗癌作用。

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