| 含硫脲聚苯乙炔的合成及其阴离子识别性能 |
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| 引用本文： | 刘瑞源,万文,苏铭健,严轶琛,瞿金清. 含硫脲聚苯乙炔的合成及其阴离子识别性能[J]. 广州化工, 2014, 0(4): 1-4,16 |
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| 作者姓名： | 刘瑞源 万文 苏铭健 严轶琛 瞿金清 |
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| 作者单位： | [1]南方医科大学药学院,广东广州510515 [2]华南理工大学化学与化工学院,广东广州510640 |
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| 基金项目： | 国家自然科学基金（21244007）. |
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| 摘 要： | 设计合成1-(4-乙炔苯基)-3-(4-硝基苯)硫脲,聚合得到含硫脲聚苯乙炔poly(1)。通过一系列阴离子的正四丁基铵盐评价其阴离子识别性能。加入CH3CO-2,C6H5CO-2和F-后,poly(1)的DMF溶液颜色由黄色变成橙红色;而加入Cl-,HSO-4,Br-和NO-3后,溶液颜色不变,结果表明poly(1)显示阴离子识别能力。1H NMR滴定表明硫脲和阴离子的氢键引发poly(1)的比色响应。poly(1)对阴离子的结合能力大小顺序排列为:C6H5COO-≈CH3COO-≈F-Cl-≈HSO-4≈Br-≈NO-3,其阴离子选择性与阴离子的碱性相关。
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| 关 键 词： | 聚苯乙炔 硫脲 阴离子识别 |
Synthesis and Anions Recognition Properties of Thiourea - containing Polyphenylacetylene |
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| Affiliation: | LIU Rui - yuan1, WAN Wen2, SU Ming -jian2, YAN Yi - chen1, QU Jin - qing2 (1 School of Pharmaceutical Science, Southern Medical University, Guangdong Guangzhou 510515; 2 School of Chemistry and Chemical Engineering, South China University of Technology, Guangdong Guangzhou 510640, China) |
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| Abstract: | Polyphenylacetylene with nitro- phenyl- thiourea moieties [ poly（ 1 ）] was synthesized by polymerization of 1 - （4 - ethynylphenyl） - 3 - （4 - nitrophenyl） thiourea. The anion sensing ability of poly （ 1 ） was estimated using the tetra- n - butylammonium （TBA） salts of a series of anions. Upon the addition of anions such as CH3CO2-, C6HsCO2- and F- , the yellow color of the DMF solution of poly（ 1 ） immediately turned to a different color while the color of solution change slightly upon addition of Cl-, HSO4, Br-, and NO3- indicating that poly （1） exhibits anion sensing ability. The 1H NMR titrations of poly（1） revealed that the colorimetric response of poly（ 1 ） was triggered by the thiourea - anion interaction through the hydrogen bonding. The selectivity of poly（1）： C6H5COO-≈CH3COO-≈F-≥Cl-≈HSO4-≈Br-≈NO3-. The selectivity of poly（1） to anions clearly correlated with the basicity of anions. |
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| Keywords: | polyphenylacetylenes thiourea anion recognition |
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