Octupolar metal complexes for third order nonlinear optical studies
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Date
2012
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Abstract
The octupolar metal complexes [Zn(bpy)(L)] (1), [Cd(bpy)(L)] (2), [Hg(bpy)(L)] (3) (bpy = 2,2?-bipyridyl, L = 4-dimethylamino-?- cyanocinnamic acid) have been synthesized. The third-order nonlinear optical properties of complexes were studied using Z-scan technique at 532 nm with nanosecond laser pulses. The complexes show optical limiting behavior. The values of the effective two-photon absorption (2PA) coefficients (?), third-order nonlinear susceptibilities (? (3)) and two-photon absorption cross sections (? <inf>2</inf>) are calculated. Results show, lewis acidity of metal center and molecular symmetry are two important factors for observed large TPA cross-section of metal complexes. © 2012 Elsevier B.V. All rights reserved.
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Keywords
Bipyridyl, Lewis acidity, Metal centers, Molecular symmetry, Nanosecond laser pulse, Nonlinear optical studies, Optical limiting behavior, Third order, Third order nonlinear optical properties, Third-order nonlinear susceptibility, TPA cross sections, Two photon absorption (2PA), Two-photon absorption cross section, Z-scan technique, Light absorption, Luminescence of organic solids, Mercury (metal), Nonlinear optics, Two photon processes, Metal complexes
Citation
Chemical Physics Letters, 2012, 542, , pp. 159-163