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Issue 17, 2014
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Environment-dependent photon emission from solid state carbon dots and its mechanism

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Abstract

Fluorescent carbon dots (CDs) have received great research interest in recent years, with applications in areas such as bio-imaging and chemical sensing. However, solid state photoluminescence of CDs and its related applications (e.g. optoelectronics) is a less explored territory. Here, we have systematically studied the photo emission of CDs in solid state. We found that their blue emission is highly dependent on whether the environment contains polar groups or not. Mechanism studies show that the blue emission of CDs may come from their C[double bond, length as m-dash]O bonds conjugated with aromatic carbons, and the interaction between polar groups in environment and C[double bond, length as m-dash]O bonds in CDs is responsible for the environment-dependent photo emission. Our conclusion here should assist the development of CDs' solid state applications.

Graphical abstract: Environment-dependent photon emission from solid state carbon dots and its mechanism

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Publication details

The article was received on 10 May 2014, accepted on 01 Jul 2014 and first published on 03 Jul 2014


Article type: Paper
DOI: 10.1039/C4NR02544J
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Nanoscale, 2014,6, 10388-10393

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    Environment-dependent photon emission from solid state carbon dots and its mechanism

    Y. Deng, X. Chen, F. Wang, X. Zhang, D. Zhao and D. Shen, Nanoscale, 2014, 6, 10388
    DOI: 10.1039/C4NR02544J

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