| 含噁二唑四枝分子的合成与非线性吸收 |
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| 引用本文： | 芮雯雯 蒋宛莉 丁雪霞 王筱梅. 含噁二唑四枝分子的合成与非线性吸收[J]. 感光科学与光化学, 2007, 25(3): 176-182 |
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| 作者姓名： | 芮雯雯 蒋宛莉 丁雪霞 王筱梅 |
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| 作者单位： | [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 |
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| 基金项目： | 国家自然科学基金（50273024,50673070）.致谢：本文在成文过程中得到中国科学院化学所白凤莲教授的有益指导,在此深表感谢. |
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| 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．
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| 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 |
| 文章编号： | 1000-3231（2007）03-0176-07 |
| 收稿时间： | 2006-11-15 |
| 修稿时间： | 2007-03-15 |
Synthesis and Fluorescence Properties of Two Oxadiazole-Based Multibranched Chromophores |
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| RUI Wen-wen, JIANG Wan-li, DING Xue-xia, WANG Xiao-mei. Synthesis and Fluorescence Properties of Two Oxadiazole-Based Multibranched Chromophores[J]. Photographic Science and Photochemistry, 2007, 25(3): 176-182 |
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| Authors: | RUI Wen-wen JIANG Wan-li DING Xue-xia WANG Xiao-mei |
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| Affiliation: | 1. Material Engineering Institute of Suzhou University, Suzhou 215021 ,Jiangsu ,P. R. China ; 2. State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Shandang, P. R. China |
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| 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. |
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| Keywords: | oxadiazole-based multibranched compounds pn junction intramolecular charge transfer nonlinear absorption |
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