Indeno[2,1-b]fluorene: A 20-π-electron hydrocarbon with very low-energy light absorption

Akihiro Shimizu, Ryohei Kishi, Masayoshi Nakano, Daisuke Shiomi, Kazunobu Sato, Takeji Takui, Ichiro Hisaki, Mikiji Miyata, Tobe Yoshito*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

151 Scopus citations


Smaller can be better: The first example of meta-quinodimethane embedded in an indenofluorene framework has been synthesized. 10,12-Dimesitylindeno[2,1-b] fluorene exhibits extremely low-energy light absorption, despite the small conjugation space of the molecule, which consists of only 20 πelectrons.

Original languageEnglish
Pages (from-to)6076-6079
Number of pages4
JournalAngewandte Chemie - International Edition
Issue number23
StatePublished - 3 Jun 2013


  • hydrocarbons
  • photochemistry
  • polycycles
  • quinodimethanes
  • radicals

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