Fluorescence, optical absorption and third-order nonlinear optical properties of terbium (III) complex embedded into DNA-CTMA matrix

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• 作者：Cosmina Andreea Lazar^a ; Franç ; ois kajzar^a ; ^b ; Ileana Rau^a ; Ana-Maria Manea^a ; ^{am_manea@yahoo.com}
• 关键词：Fluorescent materials ; Terbium complex ; DNA-CTMA matrix ; Third harmonic generation ; Cubic susceptibility
• 刊名：Journal of Luminescence
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：182
• 期：Complete
• 页码：59-64
• 全文大小：626 K
• 卷排序：182

文摘

New DNA based materials, functionalized with hexadecyltrimethylammonium chloride (CTMA) and terbium – bis – (2.2′ – bipyridine) triazotate molecules [Tb(NO3)3(bpy)2], were prepared. The obtained complexes were processed into good optical quality thin films by spin coating method on commercial glass substrates and characterized for their spectroscopic, linear and nonlinear optical properties. The solution absorption and fluorescence measurements show incorporation of Tb(NO3)3(bpy)2 into DNA-CTMA backbones. Furthermore, the photoluminescent properties of the DNA-CTMA/Tb(NO3)3(bpy)2 thin films were superior to that of DNA-CTMA/Tb(NO3)3(bpy)2 solutions. The third-order nonlinear optical (NLO) properties of thin films were determined by the optical third-harmonic generation technique at 1 064.2 nm fundamental wavelength. A large cubic susceptibility of Tb complex is observed.