Strong two-photon absorption of singlet diradical hydrocarbons

Kenji Kamada, Koji Ohta, Takashi Kubo, Akihiro Shimizu, Yasushi Morita, Kazuhiro Nakasuji, Ryohei Kishi, Suguru Ohta, Shin Ichi Furukawa, Hideaki Takahashi, Masayoshi Nakano

Research output: Contribution to journalArticlepeer-review

233 Citations (Scopus)

Abstract

(Chemical Equation Presented) Ones and twos: The two-photon absorption cross sections (σ(2)) of singlet diradical hydrocarbons with phenalenyl peripheral groups (see scheme) are larger than those of closed-shell aromatic hydrocarbons by an order of magnitude or more and are comparable to those of π-conjugated compounds with strong electron donor or acceptor substituents. A significant increase in cross section was also observed in the resonance-enhanced region.

Original languageEnglish
Pages (from-to)3544-3546
Number of pages3
JournalAngewandte Chemie - International Edition
Volume46
Issue number19
DOIs
Publication statusPublished - 2007 Jun 29
Externally publishedYes

Keywords

  • Absorption
  • Conjugation
  • Fused-ring systems
  • Optical properties
  • Radicals

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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