Carbon dots: a novel platform for biomedical applications

Abstract

Carbon dots (CDs) are a latterly synthesised class of carbon-based nanostructures known as zero-dimensional (0D) nanomaterials, which have drawn a great deal of researcher’s attention owing to their distinctive features,...

Structural, morphological, and optical properties of carbon nanoparticles unsheathed from date palm fronds

“…Therefore, the ball milling technique, which involves crushing carbonized carbon particles into CNPs, is an oxide cutting technique, with potential oxidation causing the oxygenated groups to bind with the resultant CNPs, thereby making the CNPs negatively charged carriers. 49…”

“…These also present a Stokes shift of 89 nm and a full width half maximum (FWHM) of 94 nm, indicating low energy loss and good peak absorption. 49,60…”

“…Therefore, the ball milling technique, which involves crushing carbonized carbon particles into CNPs, is an oxide cutting technique, with potential oxidation causing the oxygenated groups to bind with the resultant CNPs, thereby making the CNPs negatively charged carriers. 49 The carbon C 1s spectrum presented in Fig. 3(d) shows several peaks, including peaks at 284.78 eV, 286.08 eV and 288.56 eV, which are attributed to sp 2 (C]C), sp 3 (C-C) and (C] O) with FWHM (intensity counts) of 1.74 (1360.70), 1.34 (325.24) and 1.30 (298.7), 43,50,51 respectively.…”

“…These also present a Stokes shi of 89 nm and a full width half maximum (FWHM) of 94 nm, indicating low energy loss and good peak absorption. 49,60 CNPs have a unique electron-transfer property by quenching, whereby the molecules can accept or donate electrons. Although graphene nanoparticles (GNPs) have less defects and better crystallinity than CNPs, CNPs have consistent graphene lattice spacing, graphite, and diamond.…”

Meter-scale chemiluminescent carbon nanodot films for temperature imaging

“…On the one hand, the OPD, as previously reported, has been demonstrated as a significant precursor and nitrogen dopant for producing CDs with high fluorescence quantum yields and excellent polychromatic emission capability. [31][32][33] On the other hand, OPD with a phenylene skeleton facilitates the formation and polymerization of long aromatic chains, endowing the prepared CDs with lipid-soluble properties and thus allowing them to be compatible with the peroxalate-hydrogen peroxide system, resulting in efficient CL. Nevertheless, using the CA only or some other combinations of CA and nitrogencontaining molecules like ethylenediamine and ethanolamine, most of the CD products are water-soluble and not suitable for the lipophilic peroxalate-based CL systems.…”