Helical Nanographenes Embedded with Contiguous Azulene Units
Helical Nanographenes Embedded with Contiguous Azulene Units
复制标题
DOI：
10.1021/jacs.0c06156
复制
发表时间：
2020-08-05
影响因子：
15
通讯作者：
Takasu, Kiyosei
中科院分区：
文献类型：
--
作者：
Ogawa, Naoki;Yamaoka, Yousuke;Takasu, Kiyosei
由连续的五边形和七边形环组成的甘菊环部分是改变石墨烯和石墨烯纳米带的电子、磁性和结构性质的结构缺陷。然而，嵌入有甘菊环簇的纳米石墨烯尚未被广泛研究，因为这些化合物难以以其纯形式合成。在此，通过一种新的合成方法合成了具有独特的cove型边缘的嵌有甘菊环的纳米石墨烯。实验和理论研究表明，这种凹边赋予稳定的螺旋手性，不像正常的凹边。详细描述了其在溶液中的自缔合行为以及结构、电子和电化学性质。
The azulene moiety, composed of contiguous pentagonal and heptagonal rings, is a structural defect that alters the electronic, magnetic, and structural properties of graphenes and graphene nanoribbons. However, nanographenes embedded with an azulene cluster have not been widely investigated because these compounds are difficult to synthesize in their pure form. Herein, azulene-embedded nanographenes bearing a unique cove-type edge were synthesized by a novel synthetic protocol. Experimental and theoretical investigations revealed that this cove edge imparts stable helical chirality, unlike normal cove edges. The in-solution self-association behavior and the structural, electronic, and electrochemical properties were also described in detail.