Department of Chemical Engineering and Chemistry, Functional Organic Materials and Devices, Eindhoven University of Technology, Den Dolech 2, 5612, AZ, Eindhoven, The Netherlands.
Institut für Organische Chemie and Center for Nanosystems Chemistry, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.
Angew Chem Int Ed Engl. 2018 Jan 22;57(4):1030-1033. doi: 10.1002/anie.201710487. Epub 2017 Dec 20.
Temperature-responsive luminescent solar concentrators (LSCs) have been fabricated in which the Förster resonance energy transfer (FRET) between a donor-acceptor pair in a liquid crystalline solvent can be tuned. At room temperatures, the perylene bisimide (PBI) acceptor is aggregated and FRET is inactive; while after heating to a temperature above the isotropic phase of the liquid crystal solvent, the acceptor PBI completely dissolves and FRET is activated. This unusual temperature control over FRET was used to design a color-tunable LSC. The device has been shown to be highly stable towards consecutive heating and cooling cycles, making it an appealing device for harvesting otherwise unused solar energy.
温度响应型发光太阳能集中器（LSCs）已经被制备出来，其中在液晶溶剂中供体-受体对之间的Förster 共振能量转移（FRET）可以被调节。在室温下，苝二酰亚胺（PBI）受体聚集并且 FRET 不活跃；而当加热到高于液晶溶剂各向同性相的温度时，受体 PBI 完全溶解并且 FRET 被激活。这种对 FRET 的不寻常的温度控制被用于设计一种可调谐颜色的 LSC。该器件在连续的加热和冷却循环中表现出高度的稳定性，使其成为一种有吸引力的用于收集否则未被利用的太阳能的器件。
