Synthesis and characterization of triphenylamino-substituted chromophores for nonlinear optical applications

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• 作者：Lujian Chen ; Yuanjing Cui ; Xiaonan Mei ; Guodong Qian and Minquan Wang
• 关键词：Thermal stability ; Stilbene derivates ; Triphenylamine ; Solvatochromic method ; Nonlinear optics ; Chromophore ; Synthesis
• 刊名：Dyes and Pigments
• 出版年：2007
• 出版时间：2007
• 年：2007
• 卷：72
• 期：3
• 页码：293-298
• 全文大小：241 K

文摘

Two triphenylamino-substituted chromophores containing hydroxy group, which can be easily incorporated into polymer backbone or sol–gel matrix through covalent bond, were synthesized via Vilsmeier–Haack reaction and Knoevenagel condensation. These stilbene-type chromophores with different electron acceptors were characterized by elemental analysis, ¹H NMR, FTIR, UV–vis spectra and thermogravimetric analysis (TGA). The hyperpolarizabilities were characterized through solvatochromic method. Compared with commercially available nonlinear optical dyes such as C.I. Disperse Red 1 (DR1), C.I. Disperse Orange 3 (DO3) and C.I. Disperse Red 19 (DR19), triphenylamino-substituted chromophores possess higher thermal stability and display better transparency in operating wavelength of electronic devices.