Chen Muqing, Zeng Yanyan, Chen Gui, Qiu Yongfu
School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China.
Nanomaterials (Basel). 2022 Jul 9;12(14):2355. doi: 10.3390/nano12142355.
The high-regioselective synthesis of bisadducts based on low-symmetry C has been a challenging work due to the large amount of formed regioisomers, which require tedious separation procedures for isomeric purity and block their application in different fields. Herein, we successfully obtained a novel 1, 2, 3, 4-bis(triazolino)fullerene[C] with high regioselectivity by the rigid tether-directed regioselective synthesis strategy and the corresponding molecular structure was unambiguously confirmed by single-crystal X-ray crystallography characterization. The crystal data clearly show that the addition occurs at the domain of corannulene moiety at the end of ellipse C as well as the 1, 2, 3, 4-addition sites located at one hexagonal ring with a [6,6]-closed addition pattern. Furthermore, 2 was applied as an additive of perovskite layer to construct MAPbI3-based regular (n-i-p) perovskite solar cells, affording the power conversion efficiency (PCE) of 18.59%, which is a 7% enhancement relative to that of control devices without additive.
基于低对称性碳的双加合物的高区域选择性合成一直是一项具有挑战性的工作，因为会形成大量的区域异构体，这需要繁琐的分离程序来获得异构体纯度，并且阻碍了它们在不同领域的应用。在此，我们通过刚性连接导向的区域选择性合成策略成功地高区域选择性地获得了一种新型的1,2,3,4-双（三唑啉）富勒烯[C]，并通过单晶X射线晶体学表征明确证实了相应的分子结构。晶体数据清楚地表明，加成发生在椭圆C末端的碗烯部分区域以及位于一个具有[6,6]封闭加成模式的六元环上的1,2,3,4-加成位点。此外，将2用作钙钛矿层的添加剂来构建基于MAPbI3的常规（n-i-p）钙钛矿太阳能电池，功率转换效率（PCE）达到18.59%，相对于没有添加剂的对照器件提高了7%。
