The Influence of the Polymer Matrix on Luminescent Properties of Compositions Doped with Boron Chelates

Федоренко, Е. В.; Khrebtov, Aleksandr A.; Мирочник, А. Г.; Nefedov, P. S.; Lim, L. A.; Reutov, V. A.; Pavlov, Ivan; Сергеев, А. А.

doi:10.1134/s0030400x19090091

Cited by 11 publications

(2 citation statements)

References 13 publications

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“…Compared to the freshly dispersed Fe(III) doped CNDs (Fig. 5a) the emission peaks are slightly displaced to lower wavelengths, most probably due to the influence of the polymer matrix 40,41 or presence of remnant water content within the composite. As a conclusion, the above mentioned results inherently support the PL mechanism which emphasizes the preponderant role of the surface attached functional groups and/or defects located within the carbonaceous core.…”

Section: Resultsmentioning

confidence: 90%

Fe(III) doped carbon nanodots with intense green photoluminescence and dispersion medium dependent emission

Stan

Coroabă²,

Ursu³

et al. 2019

Sci Rep

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The preparation and investigation of Fe(III) doped carbon nanodots (CNDs) with intense green photoluminescence and emission dependence on the dispersion medium are reported. Their unusual photoluminescence is especially highlighted in water where the initial blue emission is gradually shifted to intense deep green, while in other common solvents (chloroform, acetone etc.) this behavior has not been observed. Through embedding in a polymer matrix (e.g., PVA) the color transition becomes reversible and dependent on water content, ranging from a full blue emission, when completely dried, to an intense green emission, when wetted. The preparation path of the Fe(III) doped CNDs undergoes two main stages involving the initial obtaining of Fe(III)–N–Hydroxyphthalimide complex and then a thermal processing through controlled pyrolysis. Morphostructural investigations of the prepared Fe(III) doped CNDs were performed through TG, FT-IR, XPS, DLS, TEM and AFM techniques whereas absolute PLQY, steady state and lifetime fluorescence were used to highlight their luminescence properties. The results issued from structural and fluorescence investigations bring new insights on the particular mechanisms involved in CNDs photoluminescence, a topic still open to debate.

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Section: Resultsmentioning

confidence: 90%

Fe(III) doped carbon nanodots with intense green photoluminescence and dispersion medium dependent emission

Stan

Coroabă²,

Ursu³

et al. 2019

Sci Rep

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show abstract

“…Earlier, we showed that boron dibenzoylmethanate in polystyrene (PS)-based PLCs forms exciplexes with the phenyl rings of the polymer [15]. The introduction of boron difluoride anthra-cenoicetonate into this composition leads to the realization of effective radiative energy transfer with the formation of the resulting white radiation [16].…”

Section: Introductionmentioning

confidence: 99%

White emission of polymeric luminescent compositions doped with boron chelates

Yu.

Khrebtov

Федоренко

et al. 2022

Optics and Spectroscopy

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Multicomponent polymeric luminescent compositions doped with β-diketonates of boron difluoride were obtained, which can be used to produce white light by cascade radiative energy transfer. The white light is obtained by using the RGB model. The compositions containing four luminophores showed high color rendering values (color rendering index >80, 2776 K). Two luminescent transitions were realized in the obtained compositions for the red dye (R): S1-> S0, associated with cascade radiative energy transfer along the chain of luminophores, and S2-> S1->S0, directly excited by UV radiation. The luminous characteristics of the obtained compositions indicate the possibility of using polymeric luminescent compositions doped with β-diketonate boron difluoride in emergency and indoor lighting devices. Keywords: β-diketonates of boron difluoride, luminescence, polymer compositions, energy transfer, white light, illumination.

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Strong donor-acceptor interaction of difluoroboron β-diketonates with polyvinylcarbazole: Deeply red-shifted emission of charge-transfer complexes and exciplexes

Khrebtov,

Fedorenko,

Beloliptsev

et al. 2024

Dyes and Pigments

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The Influence of the Polymer Matrix on Luminescent Properties of Compositions Doped with Boron Chelates

Cited by 11 publications

References 13 publications

Fe(III) doped carbon nanodots with intense green photoluminescence and dispersion medium dependent emission

Fe(III) doped carbon nanodots with intense green photoluminescence and dispersion medium dependent emission

White emission of polymeric luminescent compositions doped with boron chelates

Strong donor-acceptor interaction of difluoroboron β-diketonates with polyvinylcarbazole: Deeply red-shifted emission of charge-transfer complexes and exciplexes

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