Quantum-Dot-Based (Aero)gels: Control of the Optical Properties.
Quantum-Dot-Based (Aero)gels: Control of the Optical Properties.
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DOI：
10.1021/jz300726n
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发表时间：
2012-07
期刊：
影响因子：
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通讯作者：
A. Wolf;V. Lesnyak;N. Gaponik;A. Eychmüller
中科院分区：
文献类型：
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作者：
A. Wolf;V. Lesnyak;N. Gaponik;A. Eychmüller
在这项工作中，我们开发了新型的混合量子点凝胶的基础上，通过金属-四唑络合的纳米粒子的可控和可逆的组装。结合在一个混合网络纳米晶体的不同的半导体（ZnSe和CdTe），以及量子点的不同尺寸（绿色和红色发射的CdTe）与不同的带隙，我们已经检查了这些系统内的能量关系，并采取了一个简单的路线，得到的凝胶的颜色设计。从供体量子点到受体的有效能量泵送导致凝胶的发射强度的显着增强。此外，通过将三种不同类型的量子点集成到一个网络中，我们获得了发白光的气凝胶。
In this work, we have developed novel hybrid quantum dot gels based on the controllable and reversible assembly of nanoparticles via metal-tetrazole complexation. Combining in one hybrid network nanocrystals of different semiconductors (ZnSe and CdTe) as well as quantum dots of different sizes (green and red emitting CdTe) with different band gaps, we have examined energy relations within these systems and act out a facile route to the color design of the resulting gels. Efficient energy pumping from donor quantum dots to acceptors leads to a remarkable enhancement of the emission intensity of the gel. Furthermore, by integrating three different quantum dot types into one network, we obtained a white-light-emitting aerogel.