| 基于氢键作用的杯芳烃超分子识别乙醇的传感机理及分析应用 |
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| 引用本文： | 周婷,曹忠,戴云林,曹婷婷,何婧琳,徐雷涛,龙姝. 基于氢键作用的杯芳烃超分子识别乙醇的传感机理及分析应用[J]. 高等学校化学学报, 2013, 34(6): 1339-1346. DOI: 10.7503/cjcu20130110 |
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| 作者姓名： | 周婷 曹忠 戴云林 曹婷婷 何婧琳 徐雷涛 龙姝 |
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| 作者单位： | 长沙理工大学化学与生物工程学院, 电力与交通材料保护湖南省重点实验室, 长沙 410004 |
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| 基金项目： | 国家自然科学基金(批准号: 21275022, 21075011, 21105005)和国家科技支撑计划项目(批准号: 2012BAC17B01)资助. |
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| 摘 要： | 采用4种杯芳烃衍生物为吸附涂膜材料, 考察了涂膜石英晶体微天平(QCM)传感器对环境大气中微量乙醇气体的识别性能, 发现C-乙基杯[4]连苯三酚芳烃(3)是识别乙醇气体最有效的活性涂膜材料. 制备了C-乙基杯[4]连苯三酚芳烃·2CH3CH2OH(5)单晶体并进行X射线衍射结构解析, 发现其识别机制是基于超分子主体3与客体乙醇分子之间形成的C-H…π, O-H…π及O-H…O氢键作用. 当涂膜质量为24.70 μg 时, 涂膜QCM传感器对乙醇的响应最灵敏, 达到10.53 Hz/(mg·L-1). 分析了乙醇气体的吸附和解吸附动力学过程, 得到传感器对乙醇气体吸附和解吸附的初速度分别为-0.04600 Hz/s和0.03896 Hz/s. 该方法响应快, 具有选择性、 可逆性、 重现性和稳定性好的优点, 对乙醇样品测定的回收率为94.8% ~105.2%, 与气相色谱法的测定结果一致, 表明该方法可用于生活环境中乙醇气体的检测.
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| 关 键 词： | C-乙基杯[4]连苯三酚芳烃 乙醇 超分子识别 氢键作用 |
| 收稿时间： | 2013-01-30 |
Sensing Mechanism and Application for Recognition of Ethanol by Calixarene Supramolecules Based on Hydrogen Bonds Interaction |
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| ZHOU Ting,CAO Zhong,DAI Yun-Lin,CAO Ting-Ting,HE Jing-Lin,XU Lei-Tao,LONG Shu. Sensing Mechanism and Application for Recognition of Ethanol by Calixarene Supramolecules Based on Hydrogen Bonds Interaction[J]. Chemical Research In Chinese Universities, 2013, 34(6): 1339-1346. DOI: 10.7503/cjcu20130110 |
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| Authors: | ZHOU Ting CAO Zhong DAI Yun-Lin CAO Ting-Ting HE Jing-Lin XU Lei-Tao LONG Shu |
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| Affiliation: | Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410004, China |
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| Abstract: | Four calixarenederivatives were employed as adsorptive coating materials of quartz crystal microbalance(QCM) for the detection of ethanol gas in environmental atmosphere, indicating that C-ethylcalix[4]pirogallarene(3) was the most effectively active material to ethanol. The single crystal of complex C-ethylcalix[4]pirogallarene·2CH3CH2OH(5) was prepared and subjected to X-ray diffraction analysis, showing that the recognition mechanism was based on the formation of C-H…π, O-H…π and O-H…O hydrogen bonds interaction between the supramolecular host calixarene 3 and the guest ethanol molecule. When the coating mass of calixarene 3 was 24.70 μg, the coated QCM sensor possessed the highest sensitivity, which was 10.53 Hz/(mg·L-1). The kinetics processes for adsorption and desorption of ethanol on calixarene 3 have been examined, and the initial speeds of the adsorption and desorption processes for ethanol gas on cali-xarene 3 were obtained as -0.04600 Hz/s and 0.03896 Hz/s, respectively. With rapid test time, good selectivity, reversibility, reproducibility and stability, the calixarene 3 coated QCM sensor could be used for the detection of ethanol samples with a recovery of 94.8%-105.2%, which was in well consistent with those obtained by gas chromatography, showing its potential application on the determination of ethanol gas in living environment. |
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| Keywords: | C-Ethylcalix[4]pirogallarene')" href=" #" >C-Ethylcalix[4]pirogallarene Ethanol Supramolecular recognition Hydrogen bond interaction |
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