期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 142, 期 31, 页码 13598-13605出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.0c06299
关键词
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资金
- NSF [DMR-1809740]
- Shanghai Institute of Organic Chemistry and Pharmaron
- NSFC [21790362]
Azulene, a nonbenzenoid bicyclic aromatic hydrocarbon with unique electronic structure, is a promising building block for constructing nonbenzenoid it-conjugated systems. However, azulene-fused (hetero)aromatics remain rare as a result of limited synthetic methods. We report herein the unexpected synthesis of azulene- and pyridine-fused heteroaromatics Az-Py-1, a seven fused ring system with 30 pi electrons, by reductive cyclization of a 1-nitroazulene. The structure of Az-Py-1 was unambiguously confirmed by single-crystal X-ray analysis, and analogues Az-Py-2- Az-Py-6 were also synthesized, demonstrating that this is an effective method for constructing azulene- and pyridine-fused heteroaromatics. Theoretical calculations and photophysical and electrochemical studies of Az-Py-1-Az-Py-6 suggest their potential as semiconductors, and the single-crystal ribbons of Az-Py-1 show high hole mobilities up to 0.29 cm(2) V(-1)s(-1).
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