Organometallic complexes for nonlinear optics: Part 31. Cubic hyperpolarizabilities of ferrocenyl-linked gold and ruthenium complexes

Stephanie K Hurst, Mark G. Humphrey, Joseph P. Morrall, Marie P. Cifuentes, Marek Samoc, Barry Luther-Davies, Graham A. Heath, Anthony C. Willis

Research output: Contribution to journalArticle

60 Scopus citations

Abstract

The complexes [Fe{η-C5H4-(E)-CH= CH-4-C6H4C≡CX}2] [X=SiMe3 (1), H (2), Au(PCy3) (3), Au(PPh3) (4), Au(PMe3) (5), RuCl(dppm)2 (7), RuCl(dppe)2 (8)] and [Fe{η-C5H4-(E)-CH= CH-4-C6H4CH≡CRuCl} (dppm)2}2](PF6)2 (6) have been prepared and the identities of 1 and 7 confirmed by single-crystal X-ray structural studies. Complexes 1-8 exhibit reversible oxidation waves in their cyclic voltammograms attributed to the FeII/III couple of the ferrocenyl groups, 6-8 also showing reversible (7, 8) or nonreversible (6) processes attributed to Ru-centered oxidation. Cubic nonlinearities at 800 nm by the Z-scan method are low for 1-5; in contrast, complexes 6 and 7 exhibit large negative γreal and large γimag values. A factor of 4 difference in γ and two-photon absorption cross-section σ2 values for 6 and 7 suggest that they have potential as protically switchable NLO materials.

Original languageEnglish (US)
Pages (from-to)56-65
Number of pages10
JournalJournal of Organometallic Chemistry
Volume670
Issue number1-2
DOIs
StatePublished - Mar 17 2003
Externally publishedYes

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Keywords

  • Acetylide
  • Electrochemistry
  • Gold
  • Hyperpolarizability
  • Iron
  • Nonlinear optics
  • Ruthenium

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

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