UV鈥揤is shows that the absorption peak of modified ATP is apparently red-shifted and the absorbance intensity of CQDs/ATP is higher than others. FT-IR and XPS show that the CQDs are immobilized on the surface of ATP through hydroxylation reaction. TEM shows that the average diameter of ...
the ration of (C=O) tosp2graphitic structure is very large (XPS of C 1s), however, for CPE-QDs this ration is not so large, and (3) Oxidized graphite/GO have very narrow PL spectra, unlike to the CPE-QDs’ broad PL peak observed in the present report42,43,44. ...
Fig. 6A is a schematic depicting the observed trend that HET increases (peak-to-peak separation decreases) when the flake size of the graphitic material decreases. Fig. 6B shows the density functional theory (DFT) calculation on different graphene flake sizes, showing that the electrostatic ...
Carbon dots Co2+ EDTA Bioimaging Metabolism Zebrafish 1. Introduction Carbon quantum dots (CDs), carbon nanoparticles under 10 nm in diameter, are simple to synthesize, and exhibit excellent optical sensitivity and stability along with low cytotoxicity and excellent physiological clearance [[1], [2]...
Meanwhile, the X‐ray diffraction (XRD) patterns of the CDs prove a similar peak at around 23°, which can be attributed to the graphite (002) lattice spacing (Supplementary Fig. 9). X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FT-IR) spectra are employed to ...
Carbon quantum dots (C-dots) are discrete spherical carbonaceous nanoparticles with photoluminescent properties [1,2], low toxicity, high photostability, and good biocompatibility [3], [4], [5], [6] among other unique physical-chemical characteristics that allow applications in biosensors, optoelectro...
Carbon is considered to exist in three basic forms: diamond, graphite/graphene/fullerenes, and carbyne, which differ in a type of atomic orbitals hybridization. Since several decades the existence of the fourth basic carbon allotropic form with the face-
Carbon quantum dots are emerging as promising nanomaterials for next-generation displays. The elaborate structural design is crucial for achieving thermally activated delayed fluorescence, particularly for improving external quantum efficiency of electro
Carbon dots are luminescent carbonaceous nanoparticles that can be endowed with chiral properties, making them particularly interesting for biomedical applications due to their low cytotoxicity and facile synthesis. In recent years, synthetic efforts lea
The binding energy of B1s in XPS for boron substitution in the carbon lattice shows a peak ranging between 186.9 and 188.8 eV [308]. Additionally, the various boron oxides and carbides (BC2O, BCO2, B2O3, and BC3) formed on the carbon surface have B1s peaks ranging from 189.0 to ...