4.6 Article

Triple Helical Ir(ppy)3 Phenylene Cage Prepared by Diol-Mediated Benzannulation: Synthesis, Resolution, Absolute Stereochemistry and Photophysical Properties

Journal

CHEMISTRY-A EUROPEAN JOURNAL
Volume 25, Issue 37, Pages 8719-8724

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201902122

Keywords

benzannulation; iridium; doping; phosphorescence; polycyclic aromatic hydrocarbons (PAHs)

Funding

  1. Robert A. Welch Foundation [F-0038, F-1885, Y-0026]
  2. NSF [CHE-1565688]
  3. Japan Student Services Organization (JASSO)
  4. University Graduate Continuing Fellowship
  5. University of Texas at Austin Provost Fellowship

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Cyclometalation of a triple helical N-doped phenylene cage prepared by ruthenium(0)-catalyzed diol-diene benzannulation delivers a chiral, conformationally constrained Ir(ppy)(3) analogue. Like the parent complex, fac-Ir(ppy)(3), the iridium-containing PAH-cage is phosphorescent, but displays enhanced resistance to oxygen quenching.

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