| 沉淀聚合制备荧光聚脲微球及Fe3+检测 |
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| 引用本文： | 宫明慧,杨珊珊,李树生,匡芮,孔祥正. 沉淀聚合制备荧光聚脲微球及Fe3+检测[J]. 高等学校化学学报, 2019, 40(6): 1317. DOI: 10.7503/cjcu20180788 |
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| 作者姓名： | 宫明慧 杨珊珊 李树生 匡芮 孔祥正 |
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| 作者单位： | 济南大学化学化工学院,济南,250022;山东交通学院交通土建工程学院,济南,250357 |
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| 基金项目： | 国家自然科学基金(批准号: 21304038, 51473066)、 山东省自然科学基金(批准号: ZR2018BB049, ZR2018MB021)和济南大学科技计划(批准号: XKY1824)资助. |
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| 摘 要： | 以异氟尔酮二异氰酸酯为单体, 以氨基功能化的1.8-萘二甲酰亚胺(AABD)为荧光基团, 在水/丙酮质量比为3/7的混合溶剂中, 通过沉淀聚合制备了表面洁净的高度单分散荧光聚脲微球(FPU). 通过FTIR及1H NMR对AABD及FPU的化学结构进行了表征; 通过UV-Vis光谱确定FPU中嵌入的AABD荧光单元的含量; 通过荧光光谱研究了FPU固体粉末分散在水中及溶解在N-甲基吡咯烷酮中的荧光特性以及FPU分散在不同Fe3+浓度水溶液中的荧光变化. 结果表明, FPU的平均粒径(Dn)为5.24 μm, 粒径分布(Dw/Dn)为1.004, 具有强烈的绿色荧光(激发波长为420 nm, 最大发射波长为522 nm); FPU分散在水中不发生荧光自猝灭, 其荧光强度随着Fe3+浓度的增加(10-4 ~10-3 mol/L)呈线性降低.
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| 关 键 词： | 荧光聚脲微球 沉淀聚合 Fe3+检测 |
| 收稿时间： | 2018-11-21 |
Preparation of Fluorescence Polyurea Microspheres Through Precipitation Polymerization and Their Use for Fe3+ Determination† |
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| GONG Minghui,YANG Shanshan,LI Shusheng,KUANG Rui,KONG Xiangzheng. Preparation of Fluorescence Polyurea Microspheres Through Precipitation Polymerization and Their Use for Fe3+ Determination†[J]. Chemical Research In Chinese Universities, 2019, 40(6): 1317. DOI: 10.7503/cjcu20180788 |
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| Authors: | GONG Minghui YANG Shanshan LI Shusheng KUANG Rui KONG Xiangzheng |
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| Affiliation: | 1. College of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China2. College of Traffic Civil Engineering, Shandong Jiaotong University, Jinan 250357, China |
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| Abstract: | Uniform and fluorescent polyurea microspheres(FPU) were synthesized via precipitation polymerization of isophorone diisocyanate in water/acetone mixture, bonding different amount amino-functionalized 1,8-naphthalimide(AABD) as fluorescent chromorephore. The chemical structure of AABD was confirmed by 1H NMR and FTIR spectra. The AABD content in FPU was investigated by UV-Vis spectroscopy, and the enhanced properties of FPU was characterized by fluorescent spectroscopy. The results showed that, the uniform FPU microspheres of about 5 μm in diameter exhibited considerable green fluorescence emission at 522 nm when they were excited at 420 nm, and the fluorescence intensity was significant enhacced in comparsion with pure AABD in water or FPU dissolved in N-methyl pyrrolidone at the same concentration of AABD units. A linear decrease in fluorescence intensity of FPU was observed with increased Fe3+ concentration changed from 10-4 mol/L to 10-3 mol/L. This provides a potential application for AABD-containing FPU for Fe3+ determination in aqueous systems. |
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| Keywords: | Fluorescence polyurea microsphere Precipitation polymerization Ferric ion detection |
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