Influence of Chromophore Length and Acceptor Groups on the Optical Properties of Rigidified Merocyanine Dyes
作者:Katharina Christina Kreß、Thomas Fischer、Joachim Stumpe、Wolfgang Frey、Melanie Raith、Omid Beiraghi、S. Holger Eichhorn、Stefan Tussetschläger、Sabine Laschat
DOI:10.1002/cplu.201300308
日期:2014.2
series of rigidified tri-, penta- and heptamethine merocyanine dyes were synthesised. A piperidyl moiety was chosen as the electron-donating substituent while the electron-accepting group was varied from ketones to malononitriles and cyanoacetates. The structures of the compounds in the solid state and in solution were elucidated by X-ray diffraction and NMR spectroscopy, respectively, while optical properties
合成了三组刚性的三,五和七甲亚甲基花青染料。选择哌啶基部分作为供电子取代基,同时使电子接受基团从酮到丙二腈和氰基乙酸酯变化。分别通过X射线衍射和NMR光谱阐明了固态和溶液中化合物的结构,同时通过吸收和发射光谱研究了光学性质。作为一般趋势,基于对丙二腈>氰基乙酸酯>酮的溶剂溶变色行为的分析,其受体性能下降。在B3LYP 6-311 + G(d)的理论水平上的计算进一步支持了实验结果。