Spectroscopic studies of the optical properties of carbon dots: recent advances and future prospects

Abstract

We highlight the recent advances and future prospects of the spectroscopic studies of the optical properties of carbon dots.

Carbon Dots Based Nanoscale Covalent Organic Frameworks for Photodynamic Therapy

“…Carbon dots (CDs) are one kind of carbon materials with ultrasmall size and luminescent properties, which have potential applications in sensing, [ 25–27 ] bioimaging, [ 27–35 ] and biomedicine. [ 36–42 ] CDs usually possess the size of 3–5 nm, which could be recognized as a big molecular cluster. We envisage that CDs can act as a building block to fabricate supramolecular complexes or frameworks.…”

One-step synthesis of fluorescent graphene quantum dots as an effective fluorescence probe for vanillin detection

“…3 In addition, the quantum connement effect and the edge (armchair or zigzag) effect impart GQDs with special properties such as low toxicity, high biocompatibility, high uorescent activity, robust chemical inertness, and excellent photostability. [4][5][6] Owing to these properties, GQDs have immense potential applications in photovoltaic devices, 7 bioimaging instruments, 8 sensors and biosensors, 9,10 etc. Until now, GQDs have been used as a uorescent probe for the detection of a broad range of analytes such as metal ions, [11][12][13][14][15] organic matter, 16,17 proteins, 18 and other biomolecules.…”

Carbon Dots: An Emerging Smart Material for Analytical Applications

“…So, there have been continuous attempts to explore robust and reliable techniques for their characterization. In this section, some of the updated characterization techniques for CDs are discussed briefly as the characterization of CDs has been discussed more in recent reviews and chapters [ 67 , 68 , 69 ].…”

“…The presence of moieties and heteroatoms in CDs such as boron (B), nitrogen (N), sulphur (S), silicon (Si), and phosphorus (P) could be identified using such technique. The fine structure information of metal-doped CDs such as aluminium (Al), nickel (Ni), or magnesium (Mg) can be further characterized by X-ray photoelectron spectroscopy [ 67 ].…”