Anomalous fluorescence of the spherical carbon nitride nanostructures

Zinin, Pavel V.; Ryabova, Anastasia V.; Davydov, V. A.; Khabashesku, Valéry N.; Боритко, С. В.; Sharma, Shiv K.; Поминова, Д. В.; Loshenov, Victor B.

doi:10.1016/j.cplett.2015.05.020

Cited by 7 publications

(8 citation statements)

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“…The powder is bright blue, which indicates that the intensity of the fluorescence has moved to the lower wavelength region under high power illumination. Because there is such a large difference in the intensity of fluorescence between the s-C 3 N 4 and g-C 3 N 4 forms of carbon nitride [8], we compared the fluorescence of these forms under pulsed laser illumination. The results of the measurements of the g-C 3 N 4 are shown in Figure 2.…”

Section: Resultsmentioning

confidence: 99%

“…Because there is such a large difference in the intensity of fluorescence between the s-C3N4 and g-C3N4 forms of carbon nitride [8], we compared the fluorescence of these forms under pulsed laser illumination. The results of the measurements of the g-C3N4 are shown in Figure 2.…”

Section: Resultsmentioning

confidence: 99%

“…The reported electron microscopy data on the hollow spheres "suggest their multiwalled nanostructure, built by disorderly stacked C 3 N 4 curved layers are assembled from triazine rings and nitrogen bridges of pyramidal structure" [18]. Spherical nanoparticles are aggregated to submicron clusters with an average size of the particle of 527 ± 80 nm determined by the dynamic light scattering measurements [8]. Disordered graphitic C 3 N 4 (g-C 3 N 4 ) was obtained under the same conditions [16] as for the synthesis of s-C 3 N 4 , however, nano-size silica spheres were not used as substrate.…”

Section: Methodsmentioning

confidence: 99%

“…In Ref. [8], it was found that the intensity of the fluorescence excited in s-C 3 N 4 is more than three orders higher than that for g-C 3 N 4 modification. Study of the fluorescence of s-C 3 N 4 nanoparticles also demonstrated that fluorescence of s-C 3 N 4 has a high intensity anti-Stokes part.…”

Section: Introductionmentioning

confidence: 99%

“…Despite the increasing number of publications devoted to the use of the optical properties of graphite-like carbon nitrides in various technological applications, a systematic study of the influence of the nanostructure on optical properties of C-N compounds has not been conducted. We know of only a few studies that investigated the fluorescence of different modifications of g-C 3 N 4 [8,9]. In Ref.…”

Section: Introductionmentioning

confidence: 99%

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Enhancement of the Anti-Stokes Fluorescence of Hollow Spherical Carbon Nitride Nanostructures by High Intensity Green Laser

et al. 2021

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Fluorescence spectra of graphitic (g-C3N4) and spherical (s-C3N4) modifications of carbon nitride were measured as a function of green pulsed (6 ns-pulse) laser intensity. It was found that the intensity of the laser increases the maximum of the fluorescence shifts towards the anti-Stokes side of the fluorescence for s-C3N4 spherical nanoparticles. This phenomenon was not observed for g-C3N4 particles. The maximum of the anti-Stokes fluorescence in s-C3N4 nanoparticles was observed at 480 nm. The ratio of the intensity of the anti-Stokes peak (centered at 480 nm) to that of the Stokes peak (centered at 582 nm) was measured to be I484/582 = 6.4 × 10−3 at a low level of intensity (5 mW) of a green pulsed laser, whereas it rose to I484/582 = 2.27 with a high level of laser intensity (1500 mW).

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%