| 纤维素接枝改性芴-苯和咔唑-苯共聚物及其对硝基芳烃的检测 |
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| 引用本文： | 冷鸿飞,吴文辉. 纤维素接枝改性芴-苯和咔唑-苯共聚物及其对硝基芳烃的检测[J]. 影像科学与光化学, 2012, 30(4): 251-259. DOI: 10.7517/j.issn.1674-0475.2012.04.251 |
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| 作者姓名： | 冷鸿飞 吴文辉 |
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| 作者单位： | 北京理工大学 材料学院, 北京 100081 |
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| 摘 要： | 采用Suzuki偶联反应将合成的芴-苯和咔唑-苯共聚物接枝到经化学改性的纸纤维素上,制备了可用于硝基芳烃检测的传感纸纤维素.荧光猝灭研究显示,由于两种传感纸纤维素具有的大比表面积和孔道结构有利于2,4-二硝基甲苯(DNT)蒸气分子的快速扩散,因此二者比薄膜态具有更高的荧光猝灭效率.荧光猝灭的可逆性研究显示,两种传感纤维素经过四次猝灭-恢复循环后,对DNT气态分子依然具有较高的猝灭效率,表明制备的纸纤维素具有良好的荧光猝灭可逆性和稳定性.
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| 关 键 词： | 硝基芳烃 链聚集 接枝 荧光猝灭 |
| 收稿时间： | 2011-12-21 |
Celluloses Grafted with Fluorene-Benzene and Carbazole-Benzene Copolymer and Its Application to the Detection of Nitro-Aromatic |
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| LENG Hong-fei , WU Wen-hui. Celluloses Grafted with Fluorene-Benzene and Carbazole-Benzene Copolymer and Its Application to the Detection of Nitro-Aromatic[J]. Imaging Science and Photochemistry, 2012, 30(4): 251-259. DOI: 10.7517/j.issn.1674-0475.2012.04.251 |
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| Authors: | LENG Hong-fei WU Wen-hui |
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| Affiliation: | School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, P.R.China |
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| Abstract: | Sensing celluloses were prepared from fluorene-benzene and carbazole-benzene copolymer grafted to chemical modification of cellulose paper by Suzuki coupling reaction for the detection of nitro-aromatic explosives.Fluorescence quenching studies have shown that,the two kinds of sensor have higher fluorescence quenching efficiency than the thin film state,due to the modified cellulose have a high specific surface area and porosity structure,which are beneficial for the rapid diffusion of DNT vapor molecules.In addition,the two sensing cellulose have shown good fluorescence quenching efficiency after four quenching-recovery circles,which indicates that the sensing cellulose has a good fluorescence quenching reversibility and stability. |
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| Keywords: | nitro-aromatics chains aggregation grafting fluorescence quenching |
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