Issue 17, 2014

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

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

Supplementary files

Article information

Article type
Paper
Submitted
10 May 2014
Accepted
01 Jul 2014
First published
03 Jul 2014

Nanoscale, 2014,6, 10388-10393

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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