Basché Thomas, Bottin Anne, Li Chen, Müllen Klaus, Kim Jeong-Hee, Sohn Byeong-Hyeok, Prabhakaran Prem, Lee Kwang-Sup
Institut für Physikalische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55099, Mainz, Germany.
Max Planck-Institut für Polymerforschung, Ackermannweg 10, 55128, Mainz, Germany.
Macromol Rapid Commun. 2015 Jun;36(11):1026-46. doi: 10.1002/marc.201400738. Epub 2015 Mar 11.
Hybrid materials composed of colloidal semiconductor quantum dots and π-conjugated organic molecules and polymers have attracted continuous interest in recent years, because they may find applications in bio-sensing, photodetection, and photovoltaics. Fundamental processes occurring in these nanohybrids are light absorption and emission as well as energy and/or charge transfer between the components. For future applications it is mandatory to understand, control, and optimize the wide parameter space with respect to chemical assembly and the desired photophysical properties. Accordingly, different approaches to tackle this issue are described here. Simple organic dye molecules (Dye)/quantum dot (QD) conjugates are studied with stationary and time-resolved spectroscopy to address the dynamics of energy and ultra-fast charge transfer. Micellar as well as lamellar nanostructures derived from diblock copolymers are employed to fine-tune the energy transfer efficiency of QD donor/dye acceptor couples. Finally, the transport of charges through organic components coupled to the quantum dot surface is discussed with an emphasis on functional devices.
近年来，由胶体半导体量子点与π共轭有机分子及聚合物组成的混合材料一直备受关注，因为它们可能在生物传感、光电探测和光伏领域得到应用。这些纳米混合材料中发生的基本过程包括光吸收与发射，以及各组分之间的能量和/或电荷转移。对于未来的应用而言，必须了解、控制并优化化学组装和所需光物理性质方面的广泛参数空间。因此，本文描述了处理该问题的不同方法。通过稳态和时间分辨光谱研究简单有机染料分子（染料）/量子点（QD）共轭物，以探讨能量和超快电荷转移的动力学。利用由二嵌段共聚物衍生的胶束及层状纳米结构来微调QD供体/染料受体对的能量转移效率。最后，重点讨论了耦合到量子点表面的有机组分中的电荷传输，并涉及功能器件。
