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Tuning the optical properties of graphene quantum dots for biosensing and bioimaging

Abstract

Due to the low toxicity, excellent biocompatibility and attractive optical properties, graphene quantum dots (GQDs) have attracted significant attentions in analytical and biological fields. The controllable intrinsic natures of graphene nano-sheets, e.g., size, layer, edge state or shape, offer the chance to fabricate GQDs with tunable photoluminescence behaviors. Meanwhile, carboxylic moieties on the surface and edge of GQDs provide efficient reactive sites to interact with various polymeric, organic, inorganic and biological species. This not only provides the chance to tune the optical properties of GQDs via facile chemical approaches such as surface modulation and doping, but also makes GQDs eco-friendly alternatives to replace traditional fluorescent probe in biological assays. This review highlights new insights into the various strategies to tune the optical features of GQDs, and the employment of them as attractive and powerful probes for bio-sensing/imaging. The challenges and future perspectives in the related fields are discussed.

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Publication details

The article was received on 12 Feb 2018, accepted on 11 Apr 2018 and first published on 13 Apr 2018


Article type: Review Article
DOI: 10.1039/C8TB00428E
Citation: J. Mater. Chem. B, 2018, Accepted Manuscript
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    Tuning the optical properties of graphene quantum dots for biosensing and bioimaging

    X. Hai, J. Feng, X. Chen and J. Wang, J. Mater. Chem. B, 2018, Accepted Manuscript , DOI: 10.1039/C8TB00428E

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