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Optical properties of several synthesized complexes formed by self-assembly of pyrrol-2-yl-methyleneamines with zinc (II) ions are reported. Using a nanosecond optical parametric oscillator as the laser source, strong broadband optical power limiting performances based on two-photon absorption (TPA) have been observed in the visible region, where these materials exhibit large two-photon absorption (TPA) cross sections from 10−18to10−16cm4∕GW in chloroform solution.
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Yang et al. (2005) studied this question.
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