Host-guest supramolecular assembly directing beta-cyclodextrin based nanocrystals towards their robust performances.,Journal of Hazardous Materials

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Host-guest supramolecular assembly directing beta-cyclodextrin based nanocrystals towards their robust performances.
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2018-08-16 , DOI: 10.1016/j.jhazmat.2018.08.040
Xiang-Yun Du ₁ , Kangzhe Ma ₁ , Rui Cheng ₁ , Xing-Jin She ₁ , Ya-Wen Zhang ₁ , Cai-Feng Wang ₁ , Su Chen ₁ , Chen Xu ₂

Affiliation

Fluorescent CdTe nanocrystals (NCs) capped with beta-cyclodextrin (β-CD) are successfully synthesized by host-guest supramolecular assembly of the hydrophobic alkyl chains of N-acetyl-l-cysteine (NAC) on the surface of CdTe NCs and eco-friendly β-CD via the promising simple hydrothermal method in our experiments. The as-prepared NCs display better stability and lower toxicity compared with traditional those only capped with NAC. Specially, cytotoxicity experiments to human umbilical vein endothelial cells in vitro and zebrafish embryo toxicological tests in vivo are performed to determine the toxicity of CdTe NCs. For their practical applications, the promising red-luminescent NCs are employed as stable and low poison red phosphors to fabricate white light-emitting diodes (WLEDs) with remarkable color-rendering index (CRI) being 91.6. This research offers significance for solving the difficulty in toxicity and instability of heavy metal based NCs, which has potential applications in future optoelectronic devices and biomarkers.

中文翻译：

主客体超分子组装将基于β-环糊精的纳米晶体引向其强大的性能。

通过主客体超分子组装CdTe NCs表面的N-乙酰基-1-半胱氨酸（NAC）的疏水烷基链成功地合成了由β-环糊精（β-CD）覆盖的荧光CdTe纳米晶体（NCs）。在我们的实验中，通过有前途的简单水热方法可以使β-CD变得友好。与仅用NAC封盖的传统NC相比，所制备的NC表现出更好的稳定性和更低的毒性。特别地，进行体外对人脐静脉内皮细胞的细胞毒性实验和体内斑马鱼胚胎毒理学实验，以确定CdTe NCs的毒性。对于其实际应用，有前途的红色发光NC被用作稳定的低毒红色荧光粉，以制造显色指数（CRI）为91.6的白色发光二极管（WLED）。

更新日期：2018-08-17

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