| 反相微乳液法制备以CdSe量子点为核的SiO_2荧光纳米颗粒 |
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| 引用本文： | 杨昆,;秦泽华,;王益林.反相微乳液法制备以CdSe量子点为核的SiO_2荧光纳米颗粒[J].贵州师范大学学报(自然科学版),2014(4):78-82. |
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| 作者姓名： | 杨昆 ;秦泽华 ;王益林 |
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| 作者单位： | [1]广西大学化学化工学院,广西南宁530004; [2]广西大学材料科学与工程学院,广西南宁530004 |
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| 基金项目： | 广西壮族自治区教育厅科研基金（No.2013YB014）资助项目 |
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| 摘 要： | 以3-巯基丙酸为稳定剂,亚硒酸钠为硒源,合成高质量水溶性CdSe量子点。在pH值为11.0的碱性条件下,当n(Cd)∶n(Se)∶n(MPA)=1∶0.2∶1.1时,在9.0h内,可获得荧光发射峰在511563nm范围内连续可调CdSe量子点,最高荧光量子产率值可达16.1%。采用反相微乳液技术,制备以CdSe量子点为核的SiO2荧光纳米颗粒。用荧光分光光度计,红外光谱仪,透射电镜等分析测试手段,对得到的荧光纳米颗粒的性能进行表征。结果表明:得到的SiO2纳米颗粒大小均匀,水溶性和光稳定性好。
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| 关 键 词： | 反相微乳液 核壳结构 纳米颗粒 发光 |
Preparation of fluorescent SiO2 nanoparticles with CdSe quantum dots cores via reverse microemulsion method |
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| YANG Kun;QIN Zehua;WANG Yilin.Preparation of fluorescent SiO2 nanoparticles with CdSe quantum dots cores via reverse microemulsion method[J].Journal of Guizhou Normal University(Natural Sciences),2014(4):78-82. |
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| Authors: | YANG Kun;QIN Zehua;WANG Yilin |
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| Institution: | YANG Kun, QIN Zehua , WANG Yilin (1. School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China; 2. School of Materials Science and Engineering, Guangxi University, Nanning, Guangxi 530004, China) |
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| Abstract: | High quality CdSe quantum dots were prepared in an aqueous medium with sodium selenite as selenium source and 3-mercaptopropionic acid as stabilizer.The CdSe QDs with the emission peak ranging from 511 to 563 nm could be prepared at pH =11.0,n（Cd） ∶ n（Se） ∶ n（MPA） =1 ∶ 0.2∶1.1 within 9.0 h,the maximum quantum yield was 16.1％.Fluorescent SiO2 nanoparticles with CdSe quantum dots cores were prepared via reverse microemulsion method.And the properties of the obtained SiO2 nanoparticles were characterized by photoluminescence spectra,Fourier transform infrared spectroscopy and transmission electron microscopy.The results indicated that the uniform sized SiO2 nanoparticles had excellent water solubility as well as improved stability and photobleaching resistance. |
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| Keywords: | reverse microemulsion core-shell structure nanoparticles luminescence |
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