Second-order non-linear optical response in LB films for the metal complexes |
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| Authors: | Shinya Hayami Soushi Miyazaki Jun Kawamata Katsuya Inoue |
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| Institution: | 1. Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan;2. Department of Material and Life Science, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan;3. Department of Chemistry, Faculty of Science, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8512, Japan;4. Institute for Advanced Material Research, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan |
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| Abstract: | The complexes with long alkyl chains {Fe(C16-trz)3](ClO4)2}n (1), Fe(C15-BPT)2(NCS)2] (2), Fe(C16-salen)Cl] (3), Fe(C16-salmmen)Cl] (4), KFe(C16-salen)(CN)2] (5), KFe(C16-salmmen)(CN)2] (6), NaFe(C16-salmmen)(CN)2] (7), Mn(C16-salen)Cl] (8), Ni(C16-salen)] (9), Cu(C16-salen)] (10) were synthesized (C16-trz = 4-hexadecyl-1,2,4-triazole, C15-BPT = N-(3,5-di-2-pyridinyl-4H-1,2,4-triazol-4-yl)-hexadecanecarboxamide, C16-salen = N,N-bis4-(hexadecyloxy)salicylidene]ethylenediamine, C16-salmmen = N,N′-bis4-(hexadecyloxy)salicylidene]-1,2-diaminopropane). Langmuir–Blodgett (LB) films of compounds 1–10 were prepared (Scheme 1). The transfers of the molecules from onto the gas–water surface to glass substrate were confirmed by UV–Vis spectra. The second harmonic generation (SHG) were estimated for the LB films formed by the metal complexes. The SHG was observed for the complexes with the long alkyl chains in LB film. The order of the intensity for the SHG related with the number of unpaired d electrons or the d electron configurations. |
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