Tetrabrominated lead naphthalocyanine for optical power limiting

Chemistry : a European Journal
Danilo DiniMichael Hanack

Abstract

The complex 2,(3)-tetrabromo-3,(2)-tetra[(3,5-di-tert-butyl)phenyloxy]-naphthalocyaninato lead [Br(4)(tBu(2)C(6)H(3)O)(4)NcPb, 1] has been prepared and its optical limiting properties for ns light pulses have been measured. Complex 1 behaves as a reverse saturable absorber within the spectral range 440-720 nm with a limiting threshold of 0.1 J cm(-2) at 532 nm. The lifetime of the absorbing triplet excited state has been evaluated as 3.8 x 10(-7) s and the quantum yield of triplet formation has been measured as 0.07 in toluene. The nonlinear optical transmission properties of complex 1 have also been determined in Plexiglas [naphthalocyanine content: 5.0 x 10(-4) M (0.1% by weight)]. A reversible nonlinear absorption was again observed for a fluence above 0.4 J cm(-2), but through different excited-state dynamics. This may be rationalized in terms of aggregation of the molecule in the polymer matrix.

References

Jul 12, 2002·Chemical Record : an Official Publication of the Chemical Society of Japan ... [et Al.]·Michael HanackSergej Vagin
Jul 18, 2003·Chemistry : a European Journal·Guo Ying YangDanilo Dini
May 31, 2006·Chemical Communications : Chem Comm·Danilo DiniMoreno Meneghetti
Jun 28, 2006·The Journal of Physical Chemistry. B·Danilo DiniJames S Shirk
Apr 11, 2007·The Journal of Physical Chemistry. a·Wenfang SunMichael Hanack
Jun 29, 1945·Science·G Wald
Jan 1, 2008·The Journal of Physical Chemistry. a·Yunjing LiWenfang Sun
Jun 20, 1997·Applied Optics·T XiaE W Van Stryland
Mar 8, 2008·Applied Optics·D I KovshE W Van Stryland
May 1, 1967·Applied Optics·M Hercher

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Citations

Oct 19, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·César A HenriquesMário J F Calvete
Aug 2, 2011·The Journal of Physical Chemistry. a·Elena JakubikovaRichard L Martin
Dec 10, 2016·Chemical Reviews·Danilo DiniMichael Hanack

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