Nitrogen and boron co-doped carbon dots as a novel fluorescent probe for fluorogenic sensing of Ce4+ and ratiometric detection of Al3+

Boric Acid-Functionalized Carbon Dots as a High-Performance Antibacterial Agent against Escherichia coli

“…The binding peaks at 192.01 and 192.53 eV in the energy spectrum of B 1s represented the B–C and B–O bonds (Figure D), respectively. The high-resolution XPS energy spectrum of O 1s exhibited three peaks at 531.69, 532.02, and 535.82 eV attributed to C–O–H, C–O–C, and B–O (Figure E), respectively. The outcomes of both the XPS energy spectrum and FT-IR spectra indicated that the boric acid groups were kept successfully on the B-CDs.…”

Rapid Preparation of Long-Wavelength Emissive Carbon Dots for Information Encryption Using the Microwave-Assisted Method

“…The analysis of the C 1s high-resolution XPS energy spectrum (Figure a) of (Y, O, R)-CDs shows that the four binding energy peaks at 282.3, 284.7, 285.8, and 286.9 eV of Y-CDs and O-CDs correspond to C–C, CC, C–N/C–O, and CO bonds, respectively, and the binding energy peaks of these bonds appear at 284.5, 285.3, 287.5, and 288.7 eV in R-CDs. − In addition, R-CDs also exhibit C–B bond peaks at 283.6 eV . The XPS spectra of N 1s in (Y, O, R)-CDs (Figure b) show that N elements mainly exist in the form of B–N (398.7 eV), pyridinic N (399.6 eV), amino N (400.2 eV), and graphitic N (400.8 eV). , The O element in (Y, O, R)-CDs mainly exists in the form of CO (531.0 eV), C–O–C (532.2 eV), and C–O (532.9 eV) (Figure c). , The XPS spectrum of B 1s (Figure d) shows that at 190.3 and 191.2 eV, it corresponds to the B–N and B–O bonds of (Y, O, R)-CDs, while at 189.6 eV, it belongs to the B–C bond of R-CDs. , The proportion of each chemical bond in (Y, O, R)-CDs is obtained by calculating the integral area (Table ). From Y-CDs to R-CDs, the content of C–N/C–O increased from 10.61 to 22.35% and B–C increased from 0 to 15.74%.…”

“…35,36 The O element in (Y, O, R)-CDs mainly exists in the form of C�O (531.0 eV), C−O−C (532.2 eV), and C−O (532.9 eV) (Figure 2c). 37,38 The XPS spectrum of B 1s (Figure 2d) shows that at 190.3 and 191.2 eV, it corresponds to the B−N and B−O bonds of (Y, O, R)-CDs, while at 189.6 eV, it belongs to the B−C bond of R-CDs. 39,40 The proportion of each chemical bond in (Y, O, R)-CDs is obtained by calculating the integral area (Table 1).…”

Modification of Carbon Dots for Metal‐Ions Detection

“…Using p‐phenylenediamine and boric acid as starting materials, Sun Zhengguang et al. designed novel orange fluorescent nitrogen and boron co‐doped carbon dots (NB‐CDs) was designed to simultaneously detect Ce 4+ and Al 3+ [60] . In the presence of Ce 4+ , the orange fluorescence of NB‐CDs at 597 nm was effectively quenched, whereas after the addition of Al 3+ , the emission wavelength was gradually blue shifted to 527 nm, with its fluorescence color changing from orange to green (Figure 3).…”