Journal
CHEMICAL COMMUNICATIONS
Volume 48, Issue 31, Pages 3686-3699Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cc00110a
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Funding
- National Natural Science Foundation of China [20925621, 20976054, 21176083]
- Special Projects for Nanotechnology of Shanghai [11nm0500800]
- Fundamental Research Funds for the Central Universities
- Program for Changjiang Scholars and Innovative Research Team in University [IRT0825]
- Shanghai Leading Academic Discipline Project [B502]
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Similar to the popular older cousins, luminescent carbon dots (C-dots), graphene quantum dots or graphene quantum discs (GQDs) have generated enormous excitement because of their superiority in chemical inertness, biocompatibility and low toxicity. Besides, GQDs, consisting of a single atomic layer of nano-sized graphite, have the excellent performances of graphene, such as high surface area, large diameter and better surface grafting using pi-pi conjugation and surface groups. Because of the structure of graphene, GQDs have some other special physical properties. Therefore, studies on GQDs in aspects of chemistry, physical, materials, biology and interdisciplinary science have been in full flow in the past decade. In this Feature Article, recent developments in preparation of GQDs are discussed, focusing on the main two approaches (top-down and bottom-down). Emphasis is given to their future and potential development in bioimaging, electrochemical biosensors and catalysis, and specifically in photovoltaic devices that can solve increasingly serious energy problems.
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