Department of Chemistry and Biochemistry, The University of South Carolina, 631 Sumter Street, Columbia, SC, 29208, USA.
Leibniz Institute for Solid State and Materials Research, 01069, Dresden, Germany.
Angew Chem Int Ed Engl. 2016 Jul 25;55(31):9070-4. doi: 10.1002/anie.201603584. Epub 2016 Jun 6.
Herein, we report the first example of a crystalline metal-donor-fullerene framework, in which control of the donor-fullerene mutual orientation was achieved through chemical bond formation, in particular, by metal coordination. The (13) C cross-polarization magic-angle spinning NMR spectroscopy, X-ray diffraction, and time-resolved fluorescence spectroscopy were performed for comprehensive structural analysis and energy-transfer (ET) studies of the fulleretic donor-acceptor scaffold. Furthermore, in combination with photoluminescence measurements, the theoretical calculations of the spectral overlap function, Förster radius, excitation energies, and band structure were employed to elucidate the photophysical and ET processes in the prepared fulleretic material. We envision that the well-defined fulleretic donor-acceptor materials could contribute not only to the basic science of fullerene chemistry but would also be used towards effective development of organic photovoltaics and molecular electronics.
在此，我们报告了第一个晶态金属给体-富勒烯框架的实例，其中通过化学键形成，特别是通过金属配位，实现了给体-富勒烯相互取向的控制。进行了（13）C 交叉极化魔角旋转 NMR 光谱、X 射线衍射和时间分辨荧光光谱分析，以进行富勒烯给体-受体支架的综合结构分析和能量转移（ET）研究。此外，结合光致发光测量，还使用光谱重叠函数、Förster 半径、激发能和能带结构的理论计算来阐明所制备的富勒烯材料中的光物理和 ET 过程。我们设想，这种明确的富勒烯给体-受体材料不仅有助于富勒烯化学的基础科学，而且还将用于有效开发有机光伏和分子电子学。
