Focusing on luminescent graphene quantum dots: current status and future perspectives.

  title={Focusing on luminescent graphene quantum dots: current status and future perspectives.},
  author={Lingling Li and Gehui Wu and Guohai Yang and Juan Peng and Jianwei Zhao and Jun-Jie Zhu},
  volume={5 10},
To obtain graphene-based fluorescent materials, one of the effective approaches is to convert one-dimensional (1D) graphene to 0D graphene quantum dots (GQDs), yielding an emerging nanolight with extraordinary properties due to their remarkable quantum confinement and edge effects. In this review, the state-of-the-art knowledge of GQDs is presented. The synthetic methods were summarized, with emphasis on the top-down routes which possess the advantages of abundant raw materials, large scale… Expand
Synthesis and applications of graphene quantum dots: a review
Abstract As a new class of fluorescent carbon materials, graphene quantum dots (GQDs) have attracted tremendous attention due to their outstanding properties and potential applications in biological,Expand
Spotlighting graphene quantum dots and beyond: Synthesis, properties and sensing applications
Abstract Graphene quantum dot (GQDs) is a zero dimensional member in the carbon family and is usually considered as a chopped fragment from a graphene sheet. The unique features exhibited by GQDs areExpand
Recent Advances on Graphene Quantum Dots for Bioimaging Applications
This review summarizes the recent advances made in the research field of GQDs and place special emphasis on their bioimaging applications, including optical [fluorescence] FL, magnetic resonance imaging (MRI), and dual-modal imaging. Expand
Graphene quantum dots: recent progress in preparation and fluorescence sensing applications
Fluorescent graphene quantum dots (GQDs) have attracted tremendous attention because of their unique 2D layered structure, large surface area, good water solubility, tunable fluorescence, highExpand
Enhancement of graphene quantum dots based applications via optimum physical chemistry: A review
Abstract Graphene quantum dots (GQDs) is a promising new substance from the carbon material family that has been attracting researchers of many fields, such as biomedical sensors, medical imaging,Expand
Recent advancements in synthesis and property control of graphene quantum dots for biomedical and optoelectronic applications
Being a novel and interesting zero-dimensional material of the carbon family, graphene quantum dots (GQDs) have been studied extensively in the last few years due to their exceptional and desirableExpand
Revealing the tunable photoluminescence properties of graphene quantum dots
Graphene quantum dots (GQDs) are a new class of fluorescent reporters promising various novel applications such as bio-imaging, optical sensing and photovoltaics. They have recently attractedExpand
Synthesis and characterization of graphene quantum dots
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Graphene quantum dots: versatile photoluminescence for energy, biomedical, and environmental applications
Photoluminescence is one of the most outstanding features of graphene quantum dots. Because of their versatile photoluminescence, large surface area, high photostability, low cytotoxicity, andExpand
A Review of Carbon and Graphene Quantum Dots for Sensing.
The authors suggest that with the potential of these nanomaterials in sensing more research is needed on understanding their optical properties and why the synthetic methods influence their properties so much, into methods of surface functionalization that provide greater selectivity in sensing and into new sensing concepts that utilise the virtues of these nano-materials. Expand


Graphene quantum dots: emergent nanolights for bioimaging, sensors, catalysis and photovoltaic devices.
Recent developments in preparation of GQDs are discussed, focusing on the main two approaches (top-down and bottom-down). Expand
Graphene quantum dots: an emerging material for energy-related applications and beyond
In this perspective, we focus on a new type of quantum dots, graphene quantum dots (GQDs). Due to quantum confinement and edge effects, GQDs have presented extraordinary properties, attractingExpand
An electrochemical avenue to green-luminescent graphene quantum dots as potential electron-acceptors for photovoltaics.
  • Y. Li, Yue Hu, +4 authors L. Qu
  • Materials Science, Medicine
  • Advanced materials
  • 2011
To facilitate the application of graphene in nanodevices and to effectively tune the bandgap of graphenes, a promising approach is to convert the 2D graphene sheets into 0D graphene quantum dots (GQDs). Expand
Surface Chemistry Routes to Modulate the Photoluminescence of Graphene Quantum Dots: From Fluorescence Mechanism to Up‐Conversion Bioimaging Applications
The bandgap in graphene-based materials can be tuned from 0 eV to that of benzene by changing size and/or surface chemistry, making it a rising carbonbased fl uorescent material. Here, the surfaceExpand
Graphene quantum dots derived from carbon fibers.
It is reported that during the acid treatment and chemical exfoliation of traditional pitch-based carbon fibers, that are both cheap and commercially available, the stacked graphitic submicrometer domains of the fibers are easily broken down, leading to the creation of GQDs with different size distribution in scalable amounts. Expand
Blue luminescent graphene quantum dots and graphene oxide prepared by tuning the carbonization degree of citric acid
Abstract An easy bottom–up method for the preparation of photoluminescent (PL) graphene quantum dots (GQDs) and graphene oxide (GO) has been developed by tuning the carbonization degree of citricExpand
A Facile Microwave Avenue to Electrochemiluminescent Two-Color Graphene Quantum Dots
With the assistance of microwave irradiation, greenish-yellow luminescent graphene quantum dots (gGQDs) with a quantum yield (QY) up to 11.7% are successfully prepared via cleaving graphene oxideExpand
Nitrogen-doped graphene quantum dots with oxygen-rich functional groups.
  • Y. Li, Yang Zhao, +4 authors L. Qu
  • Chemistry, Medicine
  • Journal of the American Chemical Society
  • 2012
A simple electrochemical approach to luminescent and electrocatalytically active nitrogen-doped GQDs (N-GQDs) with oxygen-rich functional groups is reported, which allows them to be used for biomedical imaging and other optoelectronic applications. Expand
Influence of pH on the fluorescence properties of graphene quantum dots using ozonation pre-oxide hydrothermal synthesis
Recent research into graphene-based materials is largely focused on graphene quantum dots (GQDs) and their optical properties. A facile method has been developed to extract GQDs from reduced grapheneExpand
Graphene-quantum-dot assembled nanotubes: a new platform for efficient Raman enhancement.
This study presents the well-organized assembly of zero-dimensional (0D) functional GQDs into 1D nanotube (NT) arrays and demonstrates their remarkable potential as a new metal-free platform for efficient surface-enhanced Raman scattering (SERS) applications. Expand