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首页> 外文期刊>Applied Surface Science >A new strategy to assemble CdSe/ZnS quantum dots with multi-walled carbon nanotubes for potential application in imaging and photosensitization
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A new strategy to assemble CdSe/ZnS quantum dots with multi-walled carbon nanotubes for potential application in imaging and photosensitization

机译：一种用多壁碳纳米管组装CdSe / ZnS量子点的新策略，可在成像和光敏化中潜在应用

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摘要

With objective to enhance luminescence intensities of carbon nanotubes (CNTs), we hereby report the attachment of CdSe/ZnS quantum dots (QDs) on to the surface of shortened Multi Walled Carbon Nanotubes (sMWCNTs). The resultant QDs-sMWCNTs nanohybrid complex have been characterized by Fourier transform infrared (FT-IR) spectroscopy, optical microscopy (OM), ultraviolet (UV) light, scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray (EDX) diffraction spectroscopy and thermogravimetric analysis (TGA). Based on IR peaks characteristics of organic functional groups, optical brightness of sMWCNTs under polarized and UV light, the roughness of the sMWCNTs surface as observed in SEM images and black spots observed on the surface of sMWCNTs in TEM images, it is reasonable to conclude that CdSe/ZnS quantum dots (QDs) were attached on to the surface of sMWCNTs. Additionally, signals of Zn, S, Cd and Se along with carbon on the surface of sMWCNTs in EDX data and onset of thermal degradation of QDs-sMWCNTs nanohybrid complex at much lower temperature than that of sMWCNTs under TGA analysis further confirms the formation of QDs-sMWCNTs nanohybrid complex.
机译：为了增强碳纳米管（CNT）的发光强度，我们特此报告将CdSe / ZnS量子点（QDs）连接到缩短的多壁碳纳米管（sMWCNT）的表面上。通过傅立叶变换红外（FT-IR）光谱，光学显微镜（OM），紫外线（UV），扫描电子显微镜（SEM），透射电子显微镜（TEM），能量色散X表征了所得QDs-sMWCNTs纳米杂合物射线（EDX）衍射光谱和热重分析（TGA）。根据有机官能团的IR峰特征，偏振光和紫外光下sMWCNT的光学亮度，SEM图像中sMWCNTs表面的粗糙度以及TEM图像中sMWCNTs表面的黑点，可以得出合理的结论： CdSe / ZnS量子点（QDs）附着在sMWCNT的表面上。此外，EDG数据中sMWCNTs表面的碳，Zn，S，Cd和Se信号以及QDs-sMWCNTs纳米杂化复合物在比TMWCNTs更低的温度下热降解的开始发生进一步证实了QDs的形成-sMWCNTs纳米杂合物。

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  • 来源
    《Applied Surface Science》 |2011年第3期|p.1027-1032|共6页
  • 作者

    Gi Beom Kim; B. Ramaraj; Kuk Ro Yoon;

  • 作者单位

    Nano Bio-Sensor Research Team (BK21), Department of Chemistry, Hannam University, 461-6Jeonmin-dong, Yuseong-gu, Daejeon 305-811, Republic of Korea;

    Research and Development Department, Central Institute of Plastics Engineering and Technology (CIPET), 630, Phase IV, G1DC, Vatva, Ahmedabad 382 445, India;

    Nano Bio-Sensor Research Team (BK21), Department of Chemistry, Hannam University, 461-6Jeonmin-dong, Yuseong-gu, Daejeon 305-811, Republic of Korea;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    quantum dots; carbon nanotubes; nanohybrid complex;

    机译：量子点;碳纳米管;纳米杂合物;

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