CdSe和CdSe / CdS纳米晶体对手性有机分子光学活性的影响<a href="#fn1" title="可用电子补充信息（ESI）：杂化纳米结构形成和表征的详细信息。参见DOI：10.1039 / c7tc03457a">†</a>,Journal of Materials Chemistry C

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CdSe和CdSe / CdS纳米晶体对手性有机分子光学活性的影响 †
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2018-01-18 00:00:00 , DOI: 10.1039/c7tc03457a
A. K. Visheratina _{1,

2,

3} , A. O. Orlova _{1,

2,

3} , F. Purcell-Milton _{4,

5,

6,

7,

8} , V. A. Kuznetsova _{1,

2,

3,

4,

5} , A. A. Visheratin _{1,

2,

3} , E. V. Kundelev _{1,

2,

3} , V. G. Maslov _{1,

2,

3} , A. V. Baranov _{1,

2,

3} , A. V. Fedorov _{1,

2,

3} , Y. K. Gun’ko _{1,

2,

3,

4,

5}

Affiliation

由于这些材料在手性传感，催化和高级光学器件中提供的广泛潜在应用，因此手性纳米颗粒领域受到了广泛的关注。大量研究集中在吸附在纳米晶体表面的手性配体诱导的半导体纳米晶体的光学活性上。在这里，我们首次报道了对相反效果以及半导体纳米晶体对手性分子光学活性的影响的实验研究。合成了基于手性有机染料，二氢卟酚e6和各种半导体纳米晶体（直径范围的CdSe量子点，核/壳CdSe / CdS量子点和CdSe / CdS棒内点）的杂化纳米结构。技术。全面的，已经发现，当二氢卟酚e6与纳米晶体结合时，二氢卟酚e6的光学活性增加。在CdSe量子点的情况下，这种现象显示出对量子点大小的强烈依赖性，直径越小，光学活性的增加越大，并且反之亦然。此外，发现在核/壳CdSe / CdS QD的情况下，通过改变纳米晶体壳的厚度，可以控制纳米晶体核与二氢卟酚e6之间的最终距离。据此，已经确定减小纳米晶体核与二氢卟酚e6之间的距离导致二氢卟酚e6的光学活性增加。

"点击查看英文标题和摘要"

Influence of CdSe and CdSe/CdS nanocrystals on the optical activity of chiral organic molecules†

The field of chiral nanoparticles has received a great deal of attention due to a wide range of potential applications offered by these materials in chiral sensing, in catalysis and in advanced optical devices. A large number of studies have focused on the optical activity of semiconductor nanocrystals induced by chiral ligands adsorbed on the nanocrystal's surface. Here for the first time, we report an experimental study on the opposite effect and the influence of semiconductor nanocrystals on the optical activity of chiral molecules. Hybrid nanostructures based on a chiral organic dye, chlorin e6, and various semiconductor nanocrystals (CdSe quantum dots of a range of diameters, core/shell CdSe/CdS quantum dots and CdSe/CdS dot-in-rods) were synthesized and characterized using spectroscopic techniques. Overall, it has been found that the chlorin e6 optical activity increases when chlorin e6 was bound to nanocrystals. In the case of CdSe QDs, this phenomenon showed a strong dependency on the quantum dot size, with smaller diameters resulting in a larger optical activity increase and vice versa. Moreover, in the case of core/shell CdSe/CdS QDs, it was found that by varying the nanocrystal shell thickness, it was possible to control the resulting distance between the nanocrystal core and chlorin e6. From this, it has been established that decreasing the distance between the nanocrystal core and chlorin e6 resulted in an increase in the chlorin e6 optical activity.

更新日期：2018-01-18

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