| 聚丙烯酸修饰核壳结构水溶性量子点的制备及表征 |
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| 引用本文： | Zhao B,Zhao SQ,Cai YF,Peng W,Zhang K,Liu D. 聚丙烯酸修饰核壳结构水溶性量子点的制备及表征[J]. 光谱学与光谱分析, 2011, 31(12): 3362-3365. DOI: 10.3964/j.issn.1000-0593(2011)12-3362-04 |
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| 作者姓名： | Zhao B Zhao SQ Cai YF Peng W Zhang K Liu D |
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| 作者单位： | 1. 广东工业大学轻工化工学院,广东广州,510006
2. 华南农业大学资源环境学院,广东广州,510642 |
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| 基金项目： | 国家自然科学基金项目(20872020,20672023); 广东省自然科学基金项目(8251009001000005)资助 |
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| 摘 要： | 先用硫脲修饰的量子点为核,再用聚丙烯酸包覆,并用聚乙烯吡咯烷酮K-30为稳定剂,合成粒径分布均匀、性能稳定的核壳结构水溶性量子点荧光体。采用荧光发射光谱、红外光谱和透射电镜对样品进行表征并探索核量子点在聚丙烯酸聚合物溶液中含量对量子点荧光体的影响。结果表明:聚丙烯酸修饰后量子点粒径分布更均匀;荧光发射主峰由548nm蓝移到448nm。红外光谱图中2 092.8和1 384.3cm-1分别归属于羧基的CO和C—O伸缩振动,1 644.5cm-1归属为酰胺键的CO伸缩振动,核量子点在聚丙烯酸聚合物溶液中最佳含量为2.67mg.mL-1。该量子点制备方法简单易行,具有较好的稳定性及高荧光量子效率,为进一步应用于生物标记奠定基础。
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| 关 键 词： | 聚丙烯酸 性能稳定 核量子点 蓝移 |
Preparation and characterization of quantum dots with polyacrylic acid modified method in water-soluble core-shell structure |
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| Zhao Bin,Zhao Su-qing,Cai Yan-fei,Peng Wei,Zhang Kun,Liu Duan. Preparation and characterization of quantum dots with polyacrylic acid modified method in water-soluble core-shell structure[J]. Spectroscopy and Spectral Analysis, 2011, 31(12): 3362-3365. DOI: 10.3964/j.issn.1000-0593(2011)12-3362-04 |
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| Authors: | Zhao Bin Zhao Su-qing Cai Yan-fei Peng Wei Zhang Kun Liu Duan |
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| Affiliation: | ZHAO Bin1,ZHAO Su-qing1,CAI Yan-fei2,PENG Wei1,ZHANG Kun1,LIU Duan1 1.Faculty of Chemical Engineering and Light Industry of Guangdong University of Technology,Guangzhou 510006,China 2.College of Natural Resources and Environment,South China Agricultural University,Guangzhou 510642,China |
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| Abstract: | Cd-Zn quantum dots(QDs)modified with thiourea was firstly prepared asthe cores,then the cores were coated withpolyacrylic acid with PVP K-30as the stabilizer in water-soluble reaction system.The water-soluble fluorescence QDs were thesame size and stable.The water-soluble QDs were characterized by fluorescence emission spectra,infrared spectra(IR),andtransmission electron microscopy(TEM).The effects of the nuclear QDs with different concentration under polyacrylic acid solu-tion on the optical properties of... |
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| Keywords: | Polyacrylic acid Stable performance Nuclear QDs Blueshift |
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