Fullerenes (C60) versus heteroazafullerenes (C59N); a photophysical comparison of their monoadducts and hexaadducts
Fullerenes (C60) versus heteroazafullerenes (C59N); a photophysical comparison of their monoadducts and hexaadducts
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富勒烯 (C60) 与杂氮杂富勒烯 (C59N)；
DOI：
10.1163/15685670260469438
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发表时间：
2002
影响因子：
3.3
通讯作者：
A. Hirsch
中科院分区：
文献类型：
--
作者：
D. Guldi;F. Hauke;A. Hirsch
通过采用各种稳态和时间分辨电子物理分析，将一系列富勒烯衍生物（C60）的单重态和三重态激发态性质与相应的杂氮富勒烯衍生物（C59 N）的单重态和三重态激发态性质进行了比较。最具深远意义的结果推断，C60（1，4）的C59 N（2，5）类似物具有较短的单重态寿命（1.01/0.57 ns vs. 1.80/1.75 ns）和较弱的荧光量子产率（1.6 × 10-4/2.1 × 10- 4 vs. 6.0 × 10-4/1.09 × 10-3）。该一般结论适用于单加合物系列（1，2），也适用于高度官能化的六加合物（4，5）。类似地，较高的单重态能量（1.89 eV（4）对1.79 eV（1））与六加合物比单加合物更高的荧光量子产率结合在一起。
The singlet and triplet excited state properties of a series of fullerene derivatives (C60) are compared to those of the corresponding heteroazafullerenes derivatives (C59N) by employing a variety of steady-state and time-resolved photophysical assays. The most far-reaching results infer that the C59N (2, 5) analogous of C60 (1, 4) are characterized by shorter singlet lifetimes (1.01/0.57 ns versus 1.80/1.75 ns) and weaker fluorescence quantum yields (1.6 × 10-4/2.1 × 10-4versus 6.0 × 10-4/1.09 × 10-3). This general conclusion applies for the monoadduct series (1, 2) and also for the highly functionalized hexaadducts (4, 5). Similarly, higher singlet energies (1.89 eV (4) versus 1.79 eV (1)) come together with higher fluorescence quantum yields for the hexaadducts than for the monoadducts.