[1] Dai Yunqian, Sun Yibai, Long Huan, Chai Yunling, et al. One-pot facile synthesis of highly photoluminescent graphenequantum dots with oxygen-rich groups [J]. Journal of Southeast University (English Edition), 2014, 30 (4): 520-525. [doi:10.3969/j.issn.1003-7985.2014.04.020]

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One-pot facile synthesis of highly photoluminescent graphenequantum dots with oxygen-rich groups()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

30

Issue:

2014 4

Page:

520-525

Research Field:

Chemistry and Chemical Engineering

Publishing date:

2014-12-31

Info

Title:

One-pot facile synthesis of highly photoluminescent graphenequantum dots with oxygen-rich groups

Author(s):

Dai Yunqian;  Sun Yibai;  Long Huan;  Chai Yunling;  Sun Yueming

School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China

Keywords:

graphene;  quantum dots;  photoluminescence;  oxygen-rich groups

PACS:

O613.7

DOI:

10.3969/j.issn.1003-7985.2014.04.020

Abstract:

To achieve a new type of carbon-based quantum dots with unique photoluminescence(PL), a simple approach for fabrication of graphene quantum dots(GQDs)with oxygen-rich groups was developed via the hydrothermal reaction by using graphene oxides(GOs)as a precursor. Transmission electron microscope(TEM)and atomic force microscope(AFM)characterizations confirmed that the sizes and heights of GQDs were(5.02±0.92)nm and 0.6 nm, respectively. A strong PL emission exhibited unique excitation wavelength dependent features. Also, the carbene-like free zigzag edge sites were proposed to be the origin of the strong PL emission. The GQDs were demonstrated to be a superior probe for Fe³⁺ detection in aqueous solution with a high sensitivity and feasibility, due to the special coordinate interaction between Fe³⁺ and the phenolic hydroxyl group at GQDs.

References:

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Memo

Memo:

Biographies: Dai Yunqian(1984—), female, doctor, lecturer, daiy@seu.edu.cn; Sun Yueming(1965—), male, doctor, professor, sun@seu.edu.cn.
Foundation items: The National Basic Research Program of China(973 Program)(No.2013CB932902), the National Natural Science Foundation of China(No.21201034, 21173042), the Fundamental Research Funds for the Central Universities(No.3207044403).
Citation: Dai Yunqian, Sun Yibai, Long Huan, et al.One-pot facile synthesis of highly photoluminescent graphene quantum dots with oxygen-rich groups[J].Journal of Southeast University(English Edition), 2014, 30(4):520-525.[doi:10.3969/j.issn.1003-7985.2014.04.020]

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