CLASSICAL AREAS OF PHENOMENOLOGY |
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One- and two-photon absorption properties of two metalloporphyrin complexes |
Sun Yuan-Hong(孙元红)a)† and Wang Chuan-Kui(王传奎)b) |
a Fundamental Division of Shandong Police College, Jinan 250014, China; b College of Physics and Electronics, Shandong Normal University, Jinan 250014, China |
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Abstract The linear and nonlinear optical properties of two metalloporphyrin complexes formed by the complementary coordination of central zinc or magnesium ions to the ligand 5, 10, 15-tri-(p-tolyl)-20-phenylethynylporphyrin are theoretically investigated by using the analytic response theory at the density functional theory level. The results indicate that the studied complexes present more symmetric geometry structures than the ligand. The charge-transfer states of the two complexes in the lower energy region are all almost degenerate but those of the ligand are well separated. The ratio of the two-photon absorption cross sections of the ligand, zinc-porphyrin and magnesium-porphyrin complexes is 1.0:1.5:1.8, demonstrating that the two-photon absorption capability can be greatly increased when the ligand is coordinated with a metal ion. Moreover, several physical micro-mechanisms including electron transitions and intramolecular charge-transfer processes are discussed to explore the differences in optical property between the ligand and two complexes.
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Received: 14 November 2010
Revised: 06 May 2011
Accepted manuscript online:
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PACS:
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42.50.Hz
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(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
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31.15.ee
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(Time-dependent density functional theory)
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82.45.Wx
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(Polymers and organic materials in electrochemistry)
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10974121), the Open Fund of the State Key Laboratory of High Field Laser Physics (Shanghai Institute of Optics and Fine Mechanics), Higher Educational Science and Technology Program of Shandong Province, China (Grant No. J09LA13). |
Cite this article:
Sun Yuan-Hong(孙元红) and Wang Chuan-Kui(王传奎) One- and two-photon absorption properties of two metalloporphyrin complexes 2011 Chin. Phys. B 20 104204
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