This account focuses on the synthesis and structures of symmetric multiple carbohelicenes; i.e., fully fused polycyclic aromatic hydrocarbons containing two or more symmetric helicene moieties. Synergies of the multiplexed helicene structures within a π-system generate a number of local minima and transition states between each state. Based on recent studies on multiple helicenes, a systematic molecular design for further multiplexed symmetric helicenes is proposed in the last section of this article.

中文翻译：

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对称多碳螺旋烯

该帐户侧重于对称多碳螺旋烯的合成和结构；即，包含两个或多个对称螺旋部分的完全稠合的多环芳烃。π 系统内的多重螺旋结构的协同作用在每个状态之间产生许多局部最小值和过渡状态。基于最近对多重螺旋的研究，本文最后一节提出了进一步多重对称螺旋的系统分子设计。