The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Surface Chemistry Routes to Modulate the Photoluminescence of Graphene Quantum Dots: From Fluorescence Mechanism to Up‐Conversion Bioimaging Applications
Abstract
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 carbon‐based fluorescent material. Here, the surface chemistry of small size graphene (graphene quantum dots, GQDs) is tuned programmably through modification or reduction and green luminescent GQDs are changed to blue luminescent GQDs. Several tools are employed to characterize the composition and morphology of resultants. More importantly, using this system, the luminescence mechanism (the competition between both the defect state emission and intrinsic state emission) is explored in detail. Experiments demonstrate that the chemical structure changes during modification or reduction suppresses non‐radiative recombination of localized electron‐hole pairs and/or enhances the integrity of surface π electron network. Therefore the intrinsic state emission plays a leading role, as opposed to defect state emission in GQDs. The results of time‐resolved measurements are consistent with the suggested PL mechanism. Up‐conversion PL of GQDs is successfully applied in near‐IR excitation for bioimaging.
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Cites
A route to brightly fluorescent carbon nanotubes for near-infrared imaging in mice
Welsher, K., Liu, Z., Sherlock, S. P., Robinson, J. T., Chen, Z., Daranciang, D., & Dai, H. (2009) · Nature Nanotechnology · doi:10.1038/nnano.2009.294 · Cited by 1,287
Cited by
Zhu, S., Song, Y., Zhao, X., Shao, J., Zhang, J., & Yang, B. (2015) · Nano Research · doi:10.1007/s12274-014-0644-3 · Cited by 2,781
Self-citationGlowing Graphene Quantum Dots and Carbon Dots: Properties, Syntheses, and Biological Applications
Zheng, X. T., Ananthanarayanan, A., Luo, K. Q., & Chen, P. (2015) · Small · doi:10.1002/smll.201402648 · Cited by 2,190
Georgakilas, V., Perman, J. A., Tucek, J., & Zboril, R. (2015) · Chemical Reviews · doi:10.1021/cr500304f · Cited by 2,147
Carbon Dots: A New Type of Carbon-Based Nanomaterial with Wide Applications
Liu, J., Li, R., & Yang, B. (2020) · ACS Central Science · doi:10.1021/acscentsci.0c01306 · Cited by 1,936
Self-citationAn overview of nanoparticles commonly used in fluorescent bioimaging
Wolfbeis, O. S. (2015) · Chemical Society Reviews · doi:10.1039/c4cs00392f · Cited by 1,631
Metadata
- Authors
- Zhu, S., Zhang, J., Tang, S., Qiao, C., Wang, L., Wang, H., Liu, X., Li, B., Li, Y., Yu, W., Wang, X., Sun, H., & Yang, B.
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2012-07-20
- Volume
- 22
- Issue
- 22
- Pages
- 4732-4740
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W1981664052
- Cited by
- 1,153
- References
- 1
- FWCI
- 33.16
- Type
- journal article
- Language
- en
- Open access
- closed
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- The paper
- Zhu, S., Zhang, J., Tang, S., Qiao, C., Wang, L., Wang, H., Liu, X., Li, B., Li, Y., Yu, W., Wang, X., Sun, H., & Yang, B. (2012). Surface Chemistry Routes to Modulate the Photoluminescence of Graphene Quantum Dots: From Fluorescence Mechanism to Up‐Conversion Bioimaging Applications. Advanced Functional Materials. https://doi.org/10.1002/adfm.201201499
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