Nonlinear transmission of a tetrabrominated naphthalocyaninato indium chloride

Danilo Dini; Mario J F Calvete; Michael Hanack; Richard G S Pong; Steven R Flom; James S Shirk

doi:10.1021/jp0571776

Nonlinear transmission of a tetrabrominated naphthalocyaninato indium chloride

J Phys Chem B. 2006 Jun 29;110(25):12230-9. doi: 10.1021/jp0571776.

Authors

Danilo Dini¹, Mario J F Calvete, Michael Hanack, Richard G S Pong, Steven R Flom, James S Shirk

Affiliation

¹ Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany. danilo.dini@uni-tuebingen.de

PMID: 16800543
DOI: 10.1021/jp0571776

Abstract

The axially substituted complex chloro indium(III) 2-tetrabromo-3-tetra-(3,5-di-tert-butylphenyloxy)naphthalocyanine [Br4(tBu2PhO)4NcInCl (1); MW = 1996] has been synthesized for the first time, and its nonlinear transmission properties have been evaluated with the Z-scan technique in both open and closed aperture configurations at 532 nm for nanosecond pulsed radiation. The tetrabrominated complex 1 displayed a larger positive nonlinear absorption coefficient when compared to an analogous nonbrominated naphthalocyanine [(tBu2PhO)8NcInCl (2); MW = 2498]. The effect of the four Br atoms on the nonlinear optical behavior of 1 is evaluated, discussed, and compared with the nonlinear optical behavior of 2. It is shown that the bromination of the naphthalocyanine ring considerably improves the limiting properties of such a system when high-intensity radiations are produced by nanosecond laser pulses at 532 nm.