影像科学与光化学 ›› 2007, Vol. 25 ›› Issue (3): 176-182.DOI: 10.7517/j.issn.1674-0475.2007.03.176

• 研究论文 • 上一篇    下一篇

含噁二唑四枝分子的合成与非线性吸收

芮雯雯1, 蒋宛莉2, 丁雪霞1, 王筱梅1   

  1. 1. 苏州大学, 材料工程学院, 江苏, 苏州, 215021;
    2. 山东大学, 晶体材料国家重点实验室, 山东, 济南, 250100
  • 收稿日期:2006-11-15 修回日期:2007-03-15 出版日期:2007-05-23 发布日期:2007-05-23
  • 通讯作者: 王筱梅,E-mail:wangxiaomei@suda.edu.cn.
  • 基金资助:
    国家自然科学基金(50273024,50673070)

Synthesis and Fluorescence Properties of Two Oxadiazole-Based Multibranched Chromophores

RUI Wen-wen1, JIANG Wan-li2, DING Xue-xia1, WANG Xiao-mei1   

  1. 1. Material Engineering Institute of Suzhou University, Suzhou 215021, Jiangsu, P. R. China;
    2. State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Shandong, P. R. China
  • Received:2006-11-15 Revised:2007-03-15 Online:2007-05-23 Published:2007-05-23

摘要: 选择噁二唑基团作为多枝化合物的“枝”,以苯甲腈基和咔唑基团为分子的“核”,合成了两个四枝化合物(BO-G2和NO-G2),进行了核磁共振和质谱的表征.从结构上看,BO-G2和NO-G2分别具有“D-A-A-’A-D”和“D-’A-D-A-D’”电荷转移特征,后者具有pn结.吸收光谱和荧光光谱证实,NO-G2具有较大的激发态和基态偶极矩差值,存在着明显的分子内电荷转移和非线性吸收.

关键词: 含噁二唑四枝化合物, pn结, 分子内电荷转移, 非线性吸收

Abstract: Two new multibranched chromophores,named as NO-G2 and BO-G2,with the same peripheral branch of oxadiazole-unit,but different molecular core,that is,carbazole for NO-G2 and benzonitrile for BO-G2,were synthesized and characterized by mass spectra and 1H NMR spectra,respectively.These two oxadiazole-based multibranched chromophores show the molecular architecture of "D-A-A’-A-D" for BO-G2 and"D’-A-D-A-D’"for NO-G2, which have the different ability of intramolecular charge transfer.The measured absorption and fluorescence spectra have shown that NO-G2 exhibits nonlinear absorption than BO-G2,owing to the former possessing pn junction and resultant more obvious intramolecular charge transfer.

Key words: oxadiazole-based multibranched compounds, pn junction, intramolecular charge transfer, nonlinear absorption

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