Two-Photon and Three-Photon Absorption in an Organometallic Dendrimer

Authors

  • Marek Samoc,

    1. Laser Physics Centre, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200, Australia
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  • Joseph P. Morrall,

    1. Department of Chemistry, Australian National University, Canberra, ACT 0200, Australia, Fax: (+61) 2-6125-0760
    2. Laser Physics Centre, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200, Australia
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  • Gulliver T. Dalton,

    1. Department of Chemistry, Australian National University, Canberra, ACT 0200, Australia, Fax: (+61) 2-6125-0760
    2. Laser Physics Centre, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200, Australia
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  • Marie P. Cifuentes Dr.,

    1. Department of Chemistry, Australian National University, Canberra, ACT 0200, Australia, Fax: (+61) 2-6125-0760
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  • Mark G. Humphrey Prof.

    1. Department of Chemistry, Australian National University, Canberra, ACT 0200, Australia, Fax: (+61) 2-6125-0760
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  • Organometallic Complexes for Nonlinear Optics, Part 38. This work was supported by the Australian Research Council. We thank the Johnson-Matthey Technology Centre for the generous loan of ruthenium salts. M.G.H. thanks the ARC for an Australian Professorial Fellowship, and M.P.C. thanks the ARC for an Australian Research Fellowship. Part 37: C. E. Powell, M. P. Cifuentes, M. G. Humphrey, A. C. Willis, J. P. Morrall, M. Samoc, Polyhedron, DOI: 10.1016/j.poly.2006.05.007.

Abstract

original image

Three at a time: The wavelength dependence of nonlinear absorption and nonlinear refraction of a peripherally nitrophenylethynyl-functionalized first-generation arylethynylruthenium dendrimer (see picture; dppe=1,2-bis(diphenylphosphanyl)ethane) was examined in the range 625–1500 nm by employing fs pulses. The compound is a strong two-photon absorber in the range 600–800 nm and an exceptional three-photon absorber in the range 1100–1200 nm.

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