Push-pull molecules with a systematically extended π-conjugated system featuring 4,5-dicyanoimidazole

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• 作者：Jiř ; í ; Kulhá ; nek ; Filip Bureš ; Oldř ; ich Pytela ; Tomá ; š ; Mikysek ; Jiř ; í ; Ludví ; k ; Aleš ; Rů ; ž ; ič ; ka
• 关键词：Push-pull chromophores ; Imidazole ; Donor– ; acceptor systems ; Electrochemistry ; UV– ; Vis spectroscopy ; Nonlinear optics (NLO)
• 刊名：Dyes and Pigments
• 出版年：2010
• 出版时间：April 2010
• 年：2010
• 卷：85
• 期：1-2
• 页码：57-65
• 全文大小：752 K

文摘

Eighteen chromophores featuring 4,5-dicyanoimidazole as an acceptor moiety, a systematically enlarged π-conjugated spacer and methoxy and N,N-dimethylamino groups as donors were synthesised and characterised by X-ray analysis, electrochemistry, UV–Vis and fluorescence spectroscopy whilst NLO properties were calculated. Quantitative relationships between measured properties and structural features of the chromophores were also evaluated.