Enhanced biocidal activity of Pr3+ doped yttrium silicates by Tm3+ and Yb3+ co-doping

Fałat, Patryk; Tsang, Min Ying; Maliszewska, Irena; Zelewski, Szymon J.; Cichy, Bartłomiej; Ohulchanskyy, Tymish Y.; Samoć, Marek; Nyk, Marcin; Wawrzyńczyk, Dominika

doi:10.1039/d3ma00451a

Cited by 2 publications

(1 citation statement)

References 57 publications

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“…The YSO:Pr host was investigated by E.L. Cates et al [2], and as a result, the up-conversion spectrum was between 265-360 nm with a maximum of 278 nm under 447 nm excitation. Quite recently, for the other silicate crystal Y 2 Si 2 O 7 :Pr 3+ [26], two ultraviolet broad bands ranging between ~250 nm to ~390 nm with maximum intensity at 278 nm and 308 nm were achieved under excitation at 445 nm. According to the author's explanation, this resulting anti-Stokes UV praseodymium emission is a consequence of the sequential absorption of two blue photons, as confirmed by the measurements of excitation power dependence.…”

Section: Up-conversion Phenomenamentioning

confidence: 99%

UVC Up-Conversion and Vis-NIR Luminescence Examined in SrO-CaO-MgO-SiO2 Glasses Doped with Pr3+

Bezkrovna,

Lisiecki,

Macalik

et al. 2024

Materials

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The application of ultraviolet-C light in the field of surface treatment or photodynamic therapy is highly prospective. In this regard, the stable fluorescent silicate SrO-CaO-MgO-SiO2-Pr2O3 glasses able to effectively convert visible excitation on the ultraviolet praseodymium emission were fabricated and examined. An unusual wide-range visible-to-UVC up-conversion within 240–410 nm has been achieved in Pr3+-doped glasses, revealing their potential advantage in different sophisticated disinfection technologies. The integrated emission intensity was studied as a function of light excitation power to assess a mechanism attributed to UVC luminescence. Especially, it was revealed that the multicomponent silicate glass qualities and praseodymium 3PJ excited state peculiarities are favorable to obtaining useful broadband ultraviolet up-converted luminescence. The glass dispersion qualities were determined between 450–2300 nm. The impact of praseodymium concentration on Vis-NIR spectroscopic glass qualities was evaluated employing absorption spectra, emission spectra, and decay curves of luminescence associated with two involved praseodymium excited states. Especially, efficient interionic interactions can be inferred by investigating the decrease in 1D2 state experimental lifetime in the heavily doped samples. Examination of absorption spectra as a function of temperature implied that excitation at 445 nm should be quite effective up to T = 625 K. Contrary to this, temperature elevation gives rise to a moderate lowering of the visible praseodymium luminescence.

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Section: Up-conversion Phenomenamentioning

confidence: 99%

UVC Up-Conversion and Vis-NIR Luminescence Examined in SrO-CaO-MgO-SiO2 Glasses Doped with Pr3+

Bezkrovna,

Lisiecki,

Macalik

et al. 2024

Materials

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Pr³⁺‐Based Visible‐to‐Ultraviolet Upconversion. A minireview

Li,

Zi,

Yang

et al. 2024

Advanced Physics Research

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Optical upconversion materials doped with lanthanides, such as Yb3+‐Er3+, Yb3+‐Ho3+, and Yb3+‐Tm3+ coped systems, have been intensively studied over the past two decades because they can convert long‐wavelength and low‐energy near‐infrared photons into short‐wavelength and high‐energy visible and UV light. Compared to these double‐doped systems, Pr3+‐doped inorganic materials are gradually gaining popularity and are expected to become a new hotspot in the field of upconversion materials research. However, comprehensive reviews of this issue are scarce. In this minireview, the basic characteristics of transitions of Pr3+ are briefly introduced. Next, it concentrates on strategies that have been explored for regulating the visible‐to‐UV upconversion efficiency. Subsequently, the potential applications of Pr3+‐doped visible‐to‐UV upconversion materials are summarized. Finally, the existing challenges and development trends are highlighted for Pr3+‐based visible‐to‐UV upconversion.

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Enhanced biocidal activity of Pr³⁺ doped yttrium silicates by Tm³⁺ and Yb³⁺ co-doping

Abstract: We present an enhancement of optically triggered anti-microbial treatment based on visible to ultraviolet up-converted emission in lanthanide-doped yttrium silicates. A series of Pr3+/Tm3+/Yb3+ co-doped Y2Si2O7 powders was synthesized and...

Cited by 2 publications

References 57 publications

UVC Up-Conversion and Vis-NIR Luminescence Examined in SrO-CaO-MgO-SiO2 Glasses Doped with Pr3+

UVC Up-Conversion and Vis-NIR Luminescence Examined in SrO-CaO-MgO-SiO2 Glasses Doped with Pr3+

Pr³⁺‐Based Visible‐to‐Ultraviolet Upconversion. A minireview

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Enhanced biocidal activity of Pr3+ doped yttrium silicates by Tm3+ and Yb3+ co-doping

Abstract: We present an enhancement of optically triggered anti-microbial treatment based on visible to ultraviolet up-converted emission in lanthanide-doped yttrium silicates. A series of Pr3+/Tm3+/Yb3+ co-doped Y2Si2O7 powders was synthesized and...

Cited by 2 publications

References 57 publications

UVC Up-Conversion and Vis-NIR Luminescence Examined in SrO-CaO-MgO-SiO2 Glasses Doped with Pr3+

UVC Up-Conversion and Vis-NIR Luminescence Examined in SrO-CaO-MgO-SiO2 Glasses Doped with Pr3+

Pr3+‐Based Visible‐to‐Ultraviolet Upconversion. A minireview

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Product

Resources

About

Enhanced biocidal activity of Pr³⁺ doped yttrium silicates by Tm³⁺ and Yb³⁺ co-doping

Pr³⁺‐Based Visible‐to‐Ultraviolet Upconversion. A minireview