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Independent Tuning of the Band Gap and Redox Potential of Graphene Quantum Dots
Abstract
The band gap and redox potential of semiconductor nanocrystals are two quantities of primary importance for their applications in energy conversion devices. Herein, we report on covalent functionalization of colloidal graphene quantum dots through a solution-chemistry approach and studies of their band gaps and redox potentials. We show that their band gaps and redox potentials can be independently controlled, the former by size and the latter by functionalization. The size and the functionalization dependence of the properties can be numerically reproduced with tight-binding calculations, which thus provides a simple theoretical tool to guide the design of graphene QDs with desired properties.
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Cited by
Graphene Quantum Dots Derived from Carbon Fibers
Peng, J., Gao, W., Gupta, B. K., Liu, Z., Romero-Aburto, R., Ge, L., Song, L., Alemany, L. B., Zhan, X., Gao, G., et al. (2012) · Nano Letters · doi:10.1021/nl2038979 · Cited by 2,361
Review of Carbon and Graphene Quantum Dots for Sensing
Li, M., Chen, T., Gooding, J. J., & Liu, J. (2019) · ACS Sensors · doi:10.1021/acssensors.9b00514 · Cited by 991
Li, Q., Zhang, S., Dai, L., & Li, L.-S. (2012) · Journal of the American Chemical Society · doi:10.1021/ja309270h · Cited by 593
Self-citationLi, L., & Dong, T. (2018) · Journal of Materials Chemistry C · doi:10.1039/c7tc05878k · Cited by 452
Self-citationSynthesis and applications of graphene quantum dots: a review
Chen, W., Lv, G., Hu, W., Li, D., Chen, S., & Dai, Z. (2018) · Nanotechnology Reviews · doi:10.1515/ntrev-2017-0199 · Cited by 394
Metadata
- Authors
- Yan, X., Li, B., Cui, X., Wei, Q., Tajima, K., & Li, L.-S.
- Venue
- The Journal of Physical Chemistry Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-04-22
- Volume
- 2
- Issue
- 10
- Pages
- 1119-1124
- ISSN
- 1948-7185 (ISSN-L)
- OpenAlex
- W2313023252
- Cited by
- 220
- References
- 0
- FWCI
- 6.35
- Type
- journal article
- Language
- en
- Open access
- closed
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- Yan, X., Li, B., Cui, X., Wei, Q., Tajima, K., & Li, L.-S. (2011). Independent Tuning of the Band Gap and Redox Potential of Graphene Quantum Dots. The Journal of Physical Chemistry Letters. https://doi.org/10.1021/jz200450r
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