Carbon dots from alcohol molecules: principles and the reaction mechanism

Abstract

Carbon dots (CDs) have attracted significant attention in the energy, environment, and biology fields due to their exceptional physicochemical properties. However, owing to the multifarious precursors and complex reaction mechanisms,...

Design of Boron- and Nitrogen-Codoped Carbon Dots with Dual-Emission Performance toward Sustainable Light-Conversion Films

“…Additionally, the fluorescence intensity of the BN-CDs/PSC-2 film (λ ex = 410 and 550 nm) still remained at a high level when exposed to air for 8 days (Figure b). As expected, the formation of hydrogen bonds between the PSC film and the surface functional groups of BN-CDs may endow BN-CDs with much stronger fluorescence stability and facilitate more efficient radiative recombination of electrons and holes. − The stability of the BN-CDs/PSC-2 film was further checked by placing it in aqueous solutions with different environments (pH = 4, 7, and 11) under daylight (Figure c) and 365 nm UV light (Figure d) for 60 min, respectively. Apparently, after being soaked in water of different pH values for 60 min, the BN-CDs/PSC-2 film still can maintain original shape and size, and no distinct wrinkles are found on its surface.…”

Rapid Realization of Multicolor Room Temperature Phosphorescence of Carbon Dot-Based Composites on Natural Polymer Matrix Platforms

“… The O 1s spectra exhibit two peaks at binding energies of 530.6 eV (CO) and 532.5 eV (OCOH) (Figure S6aiii). , The Na 1s spectrum has a peak corresponding to C–O–Na at 1071.32 eV (Figure S6aiv), which is attributed to the CMSNa matrix, further indicating that the HA-CDs and CMSNa were successfully assembled. The C 1s spectrum of Nap-CDs-CMSNa shows four peaks at 283.2 eV, 284.7 eV, 286.1 and 287.2 eV, corresponding to CC, C–C, C–O, and CO, respectively (Figure S6bii).…”

“… , Similarly, The Na 1s spectrum shows a peak corresponding to C–O–Na at 1070.3 eV (Figure S6biv). In addition, the C 1s spectrum of Nap-CDs-CMCS has three peaks at 284.8, 286.2, and 288.2 eV, corresponding to CC/C–C, C–O/C–N, and CO, respectively (Figure S6cii). , The O 1s spectra can be fitted to two binding energies of 530.8 and 532.4 eV assigned to C–OH and CO, respectively (Figure S6ciii).…”

“…27 The O 1s spectra exhibit two peaks at binding energies of 530.6 eV (C� O) and 532.5 eV (O�C�OH) (Figure S6aiii). 28,48 The Na 1s spectrum has a peak corresponding to C−O−Na at 1071.32 eV (Figure S6aiv), 49 which is attributed to the CMSNa matrix, S6bii). 27,50,51 The O 1s spectra exhibit two peaks at 529.4 and 531.3 eV, corresponding to C−O and C� O bonds, respectively (Figure S6biii).…”