Crystal structure, nonlinear optical and photophysical properties of a novel chromophore constructed with terpyridine, triphenylamine and ethyl cyanocaetate functional moieties

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• 作者：Shengli Li^a ; Weibiao Shen^a ; Guiju Hu^a ; Qiong Zhang^a ; Bing Liu^a ; Jie Liu^a ; Hongjuan Ding^c ; Jieying Wu^a ; ^{jywu1957@163.com} ; ^{lsl1968@ahu.edu.cn} ; Hongping Zhou^a ; Jiaxiang Yang^a ; Yupeng Tian^a ; ^b ; ^d ; ^{yptian@ahu.edu.cn}
• 关键词：A. Optical materials ; A. Organic compounds ; B. Chemical synthesis ; D. Crystal structure ; D. Optical properties
• 刊名：Materials Chemistry and Physics
• 出版年：2013
• 出版时间：15 June, 2013
• 年：2013
• 卷：140
• 期：1
• 页码：200-207
• 全文大小：924 K

文摘

A novel chromophore (Z)-ethyl-3-(4-((4-([2,2¡ä:6¡ä,2¡å-terpyridin]-4¡ä-yl)phenyl) (phenyl) amino)phenyl)-2-cyanoacrylate(3), constructed with triphenylamine moiety as the electron donor (D), 2, 2: 6, 2-terpyridine moiety as an electron acceptor (A), and ethyl cyanocaetate group as an auxiliary electron acceptor (A¡ä), has been designed and synthesized. The crystal structures of 3 and its mediator 2 (4¡å-(4¡ä-(4-(Diphenylamino) phenyl) aldehyde)-2,2¡ä:6¡ä,2¡å-Terpyridine), have been determined by single crystal X-ray diffraction analysis. The linear and nonlinear spectra of these chromophores were investigated on the basis of experimental and calculation methods. The two-photon absorption (TPA) cross-sections of 1-3 were determined by a femtosecond open-aperture Z-scan technique. The maximum value of the TPA cross-section (¦Ò) for 3 is 7938.3?GM in DMF solution. However, much weaker two-photon absorption responses were observed at the same condition for chromophore 1 and 2, respectively. The results of the work indicate that, the photophysical properties of the D-A configuration group are influenced largely by the auxiliary moiety (A¡ä) attached.