Fluorinated Naphthalocyanines Displaying Simultaneous Reverse Saturable Absorption at 532 and 1064 nm


  • We acknowledge the financial support for this work by DSO National Laboratories (Singapore), Directorate of Research and Development (Singapore), and Fonds der Chemischen Industrie (Germany). Supporting Information is available online from Wiley InterScience or from the author.


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Photostable naphthalocyanines (see Figure) can act as optical limiters, simultaneously absorbing nanosecond laser pulses at 532 nm and 1064 nm. In these naphthalocyanines, where M can correspond to Zn, InCl, or In(p-trifluoromethylphenyl), the pattern of substitution and the nature of the substituents were found to be critical factors in achieving such a combination of linear and nonlinear optical properties.