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Organometallic Complexes for Non-linear Optics. 49. Third-Order Non-linear Optical Spectral Dependence Studies of Arylalkynylruthenium Dendrimers
Australian Journal of Chemistry (2011)
  • Marek Samoc
  • T. Christopher Corkery, Australian National University
  • Andrew M. McDonagh, Australian National University
  • Marie P. Cifuentes, Australian National University
  • Mark G. Humphrey, Australian National University
Abstract
The cubic hyperpolarizabilities of 1,3,5-(trans-[RuCl(dppe)2(C≡CC6H4-4-C≡C)])3C6H3 (1), 1,3,5-(trans-[Ru(C≡CPh)(dppe)2(C≡CC6H4-4-C≡C)])3C6H3 (2), 1,3,5-(trans-[Ru(C≡CC6H4-4-NO2)(dppe)2(C≡CC6H4-4-C≡C)])3C6H3 (3), 1,3,5-{trans-[Ru(C≡C-3,5-(trans-[Ru(C≡CPh)(dppe)2(C≡CC6H4-4-C≡C)])2C6H3)(dppe)2(C≡CC6H4-4-C≡C)]}3C6H3 (4), and 1,3,5-{trans-[Ru(C≡C-3,5-(trans-[Ru(C≡CC6H4-4-NO2)(dppe)2(C≡CC6H4-4-C≡C)])2C6H3)(dppe)2(C≡CC6H4-4-C≡C)]}3C6H3 (5) have been assessed over the spectral range 520–1600 nm using the Z-scan technique and ~150 fs pulses. All complexes exhibit negative values of γreal (corresponding to self-defocusing behaviour) and significant positive values of γimag (corresponding to two-photon absorption) at short wavelengths (up to 1000 nm). The maximal values of γreal and γimag increase in magnitude on dendrimer generation increase (proceeding from 2 to 4 or 3 to 5). The open-aperture Z-scan results have been used to confirm and contrast the two-photon (2PA) and three-photon absorption (3PA) behaviour of 1–5, the data being consistent with the existence of 2PA at the short wavelength range, but with significant 3PA at longer wavelengths for 1–3 and 5, a record 3PA coefficient for an inorganic complex for 5 at 1180 nm, and appreciable 3PA at the telecommunications wavelength of 1300 nm.
Disciplines
Publication Date
September 16, 2011
Citation Information
Marek Samoc, T. Christopher Corkery, Andrew M. McDonagh, Marie P. Cifuentes, et al.. "Organometallic Complexes for Non-linear Optics. 49. Third-Order Non-linear Optical Spectral Dependence Studies of Arylalkynylruthenium Dendrimers" Australian Journal of Chemistry Vol. 64 Iss. 9 (2011)
Available at: http://works.bepress.com/chriscorkery/1/