Cyclometalated 4-Styryl-2-phenylpyridine Platinum(II) Acetylacetonate Complexes as Second-Order NLO Building Blocks for SHG Active Polymeric Films

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• 作者：Alessia Colombo ; Claudia Dragonetti ; Daniele Marinotto ; Stefania Righetto ; Dominique Roberto ; Silvia Tavazzi ; Muriel Escadeillas ; V茅ronique Guerchais ; Hubert Le Bozec ; Abdou Boucekkine ; Camille Latouche
• 刊名：Organometallics
• 出版年：2013
• 出版时间：July 22, 2013
• 年：2013
• 卷：32
• 期：14
• 页码：3890-3894
• 全文大小：263K
• 年卷期：v.32,no.14(July 22, 2013)
• ISSN：1520-6041

文摘

The second-order nonlinear optical (NLO) properties of various Pt(II) acetylcetonate complexes bearing a substituted cyclometalated 4-styryl-2-phenylpyridine (ppy-4-styryl-R, with R = NEt₂, OMe, H, NO₂) were investigated in DMF solution on working with an incident wavelength of 1907 nm by the EFISH technique, whereas the dipole moments were determined by density functional theory (DFT) calculations. In addition, a Pt(II) complex with the ppy-4-styryl-NEt₂ ligand, which was the most NLO efficient chromophore due to a particularly high dipole moment, was dispersed in a polymethylmethacrylate matrix and then oriented by poling to give a composite film characterized by a good and quite stable second harmonic generation (SHG) signal.