A π-Extended Pentadecabenzo[9]Helicene.
A π-Extended Pentadecabenzo[9]Helicene.
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π-扩展的十五苯并[9]螺旋烯。
DOI：
10.1002/anie.202300840
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发表时间：
2023
影响因子：
--
通讯作者：
H. Gong
中科院分区：
文献类型：
--
作者：
Yun;Nai;L. Diao;Yang Yang;Xu;H. Gong
A novel chiral nanographene (i.e., EP9H) with pentadecabenzo[9]helicene core fragment has been synthesized and fully characterized. Notably, Single crystal X-ray diffraction unambiguously confirms the helical structure. The fluorescence emission of EP9H locates in the near infrared region (λem = 684 nm) with a medium quantum yield (0.10) of helicene derivatives. Cyclic voltammetry reveals its seven quasi-reversible redox states from -2 to +5. Furthermore, enantiopure EP9H displays distinct CD signals in a broad spectral range from 300 to 700 nm. Compared to the reported small organic molecules, EP9H displays outstanding |glum| as 4.50 × 10-2 and BCPL as 304 M-1 cm-1.
