Pyrene-cored blue-light emitting [4]helicenes: Synthesis, crystal structures, and photophysical properties

Jian Yong Hu, Arjun Paudel, Nobuyuki Seto, Xing Feng, Masanao Era, Taisuke Matsumoto, Junji Tanaka, Mark R.J. Elsegood, Carl Redshaw, Takehiko Yamato

研究成果: Contribution to journalArticle査読

27 被引用数 (Scopus)


The synthesis, crystal structures and photophysical properties of two types of pyrene-cored blue-light emitting [4]helicenes (7 and 9) are reported. The chemical structures of all synthesized compounds were fully confirmed by 1H and 13C NMR spectra, mass spectroscopy as well as elemental analysis. Single-crystal X-ray analysis of these [4]helicenes revealed that there are two types of laterally naphthalene annulated helical architectures, which are clearly influenced by different R substituents. The photophysical properties of the [4]helicenes (7 and 9) were fully investigated in both solutions and films, along with the pre-cyclization products, 4,9- and 4,10-bis(phenylethenyl)pyrenes (6 and 8). Notable optical features were obtained in these compounds, which make them promising candidates for several important applications in modern electronic and optoelectronic devices, such as blue emitters in organic light-emitting devices (OLEDs), or as models for further exploring the development of a new generation of organic materials based on pyrene.

ジャーナルOrganic and Biomolecular Chemistry
出版ステータス出版済み - 4 7 2013

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry

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