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首页> 外文期刊>RSC Advances >A double fluorescent nanoprobe based on phosphorus/nitrogen co-doped carbon dots for detecting dichromate ions and dopamine
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A double fluorescent nanoprobe based on phosphorus/nitrogen co-doped carbon dots for detecting dichromate ions and dopamine

机译：基于磷/氮的共掺杂碳点的双荧光纳米孔，用于检测二分甲磺酸盐离子和多巴胺

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摘要

An on-off-on fluorescent phosphorus/nitrogen co-doped carbon dot (PNCD) probe was explored for the determination of Cr(vi) and dopamine resulting from the inner filter effect (IFE). The blue-emitting carbon dots with high quantum yields of 25.47% as well as a narrow size distribution were synthesized by a rapid, convenient route using H3PO4 and ethylenediamine as the precursors without any surface passivation. A wide linear region in the range of 7-70 M with a detection limit of 0.71 M was achieved for Cr(vi). Moreover, the proper reductants can weaken the inner filter effect to recover the PNCD fluorescence by converting Cr(vi) into Cr(iii). Therefore, the PNCDs/Cr(vi) hybrid could also be used as an off-on fluorescent probe for detecting dopamine (DA) with a detection limit of 0.49 M. Consequently, the PNCDs could serve as a powerful fluorescent bi-sensor for detection of both Cr(vi) and DA in practical applications.
机译：探讨了在内部滤波器效果（IFE）中的Cr（VI）和多巴胺的测定，探讨了导通荧光磷/氮共掺杂碳点（PNCD）探针。 使用H3PO4和乙二胺作为前体的快速，方便的途径，合成具有高量子产率的蓝色发光产率为25.47％以及窄的尺寸分布，没有任何表面钝化的前体。 对于Cr（VI）实现了7-70μm的宽线性区域，检测限为0.71μm。 此外，适当的还原剂可以通过将Cr（VI）转化为Cr（III）来削弱内部过滤器效果以回收PNCD荧光。 因此，PNCDS / Cr（VI）杂种也可以用作检测多巴胺（DA）的OFF荧光探针，检测限度为0.49米。因此，PNCD可以用作用于检测的强大的荧光双传感器 在实际应用中的Cr（vi）和da。

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  • 来源
    《RSC Advances》 |2018年第55期|共10页
  • 作者

    Wu Bin; Shi Xiaofeng; Han Wei; Wang Taishan; Wang Chunru; Jiang Li;

  • 作者单位

    Chinese Acad Sci Inst Chem CAS Res Educ Ctr Excellence Mol Sci CAS Key Lab Mol Nanostruct &

    Nanotechnol Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Chem CAS Res Educ Ctr Excellence Mol Sci CAS Key Lab Mol Nanostruct &

    Nanotechnol Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Chem CAS Res Educ Ctr Excellence Mol Sci CAS Key Lab Mol Nanostruct &

    Nanotechnol Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Chem CAS Res Educ Ctr Excellence Mol Sci CAS Key Lab Mol Nanostruct &

    Nanotechnol Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Chem CAS Res Educ Ctr Excellence Mol Sci CAS Key Lab Mol Nanostruct &

    Nanotechnol Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Chem CAS Res Educ Ctr Excellence Mol Sci CAS Key Lab Mol Nanostruct &

    Nanotechnol Beijing 100190 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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