Agata Szczeszak

Adam Mickiewicz University in Poznań

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Stefan Lis

Adam Mickiewicz University in Poznań

Tomasz Grzyb

Adam Mickiewicz University in Poznań

Marcin Runowski

Adam Mickiewicz University in Poznań

Justyna Czajka

Bydgoszcz University of Science and Technology

Nina Kaczorowska

Adam Mickiewicz University in Poznań

Dominika Przybylska

Adam Mickiewicz University in Poznań

Aleksandra Erdman

Lodz University of Technology

Konrad Kubasiewicz

Adam Mickiewicz University in Poznań

Piotr Kulpiński

Lodz University of Technology

Anna Ekner‐Grzyb

Adam Mickiewicz University in Poznań

Cooperative Institutions

Adam Mickiewicz University in Poznań

Polish Academy of Sciences

Faculty (United Kingdom)

Institute of Molecular Physics

Universitat de València

Universitat Politècnica de València

Poznań University of Technology

Universidade Federal de Pernambuco

Lodz University of Technology

University of Łódź

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Influence of GdVO₄:Eu³⁺nanocrystals on growth, germination, root cell viability and oxidative stress of wheat (Triticum aestivumL.) seedlings

bioRxiv (Cold Spring Harbor Laboratory) (2021)

Anna Ekner‐Grzyb Jagna Chmielowska-Bąk Agata Szczeszak

Abstract Increasing application of lanthanide-doped nanocrystals (LDNCs) entails a risk of a harmful impact on the natural environment. Therefore, in the presented study the influence of gadolinium orthovanadates doped with Eu 3+ nanocrystals on wheat ( Triticum aestivum L.), chosen as a model plant species, was investigated. The seeds were grown in Petri dishes filled with colloids of LDNCs at the concentrations of: 0, 10, 50 and 100 µg/ml. The plants’ growth endpoints (number of roots, roots length, roots mass, hypocotyl length and hypocotyl mass) and germination rate were found to be not significantly changed after the exposure to GdVO 4 :Eu 3+ nanocrystals at all used concentrations. The presence of LDNCs also had no effect on oxidative stress intensity determined on the basis of the amount of lipid peroxidation product (thiobarbituric acid reactive substances; TBARS) of the roots. Similarly, TTC (tetrazolium chloride) assay did not show any differences in cells’ viability. However, root cells of the treated seedlings contained less amount of Evans Blue (EB) when compared to the control.

TBARS

Thiobarbituric acid

10.1101/2021.05.05.442722

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Citations (1)

Upconversion luminescence in cellulose composites (fibres and paper) modified with lanthanide-doped SrF₂ nanoparticles

Journal of Materials Chemistry C (2020)

Agata Szczeszak Małgorzata Skwierczyńska Dominika Przybylska Marcin Runowski Emilia Śmiechowicz

The use of functional nanomaterials and their combination with organic polymers leads to the formation of advanced composites and hybrid inorganic–organic systems having unique properties.

Photon Upconversion

10.1039/d0tc02050h

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Citations (17)

Corrigendum to “High-pressure luminescence of monoclinic and triclinic GdBO3: Eu3+” [Ceramics International 46 (2020) 26368–26376]

Ceramics International (2020)

Przemysław Woźny Marcin Runowski Szymon Sobczak Agata Szczeszak Andrzej Katrusiak

Triclinic crystal system

Monoclinic crystal system

Persistent luminescence

10.1016/j.ceramint.2020.09.195

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Citations (2)

Bi3+ as an enhancer for down- and upconversion luminescence in ternary vanadate structures

Ceramics International (2021)

Nina Kaczorowska Agata Szczeszak Stefan Lis

Rietveld Refinement

Photon Upconversion

Bismuth

10.1016/j.ceramint.2021.05.129

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Citations (7)

Characterization and Optimization of Bimodal Luminescent Lyocell Fibers Modified with Ba₂V₂O₇: Yb³⁺, Ho³⁺ Nanoparticles for Anti-Counterfeiting Applications

Ceramics International (2024)

Emilia Śmiechowicz Aleksandra Erdman Martyna Marszał Nina Kaczorowska Piotr Kulpiński

Lyocell

Characterization

10.1016/j.ceramint.2024.12.348

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Influence of Matrix on the Luminescent and Structural Properties of Glycerine-Capped, Tb³⁺-Doped Fluoride Nanocrystals

The Journal of Physical Chemistry C (2012)

Tomasz Grzyb Marcin Runowski Agata Szczeszak Stefan Lis

Nanocrystalline REF3:Tb3+ fluorides (where RE = Y, La, Ce, Gd, and Yb) have been synthesized using a precipitation method in a water/glycerine system. Glycerine, which was added in 25% by volume to Ln(NO3)3 and NH4F reactant solutions, prevented an uncontrolled growth of the nanocrystals and enhanced the stability of the colloids formed in water. X-ray analysis and transmission electron microscopy confirmed the formation of the fluoride nanocrystals. Additionally, the presence of glycerine on the surface of the crystallites was established on the basis of IR measurements. The use of Tb3+ ions resulted in a green luminescence of the products, with a maximum of this emission at 545 nm. Spectroscopic analysis was performed to investigate the effects of the fluoride matrix on the luminescent properties of the Tb3+ ions. Quantum yields were also determined. In particular, the most efficient system, based on CeF3 doped with 15% Tb3+, was investigated in detail.

Nanocrystalline material

Matrix (chemical analysis)

10.1021/jp3010579

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Citations (80)

Synteza i badania fizykochemiczne nanoluminoforów opartych o modyfikowany tlenek cynku i borany lantanowców

Agata Szczeszak

Source

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A new synthesis approach for upconverting nanoparticles based on rare earth ternary vanadates

Ceramics International (2020)

Nina Kaczorowska Agata Szczeszak W. Nowicki Stefan Lis

Nanomaterials

Vanadate

10.1016/j.ceramint.2020.04.025

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Citations (10)

Untypical tuneable emission activated by NIR radiation observed in gadolinium borate nanomaterials doped with Yb3+, Ho3+ and Ce3+ ions

Scientific Reports (2024)

Agata Szczeszak Justyna Czajka

New luminescent nanoparticles with adjustable emission properties were synthesized via a hydrothermal method to investigate the effect of Ce

Nanomaterials

10.1038/s41598-024-78563-4

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Luminescent materials with dual-mode excitation and tunable emission color for anti-counterfeiting applications

Scientific Reports (2023)

Nina Jaroch Justyna Czajka Agata Szczeszak

Abstract GdVO 4 -based dual-mode phosphors were successfully synthesized via a hydrothermal approach. The X-ray diffraction analysis determined the tetragonal structure as well as I 4 1 /amd space group of products by comparing with a reference pattern no. ICDD #01-072-0277. The morphology of yielded phosphors was confirmed by transmission electron microscopy and scanning electron microscopy. Detailed spectroscopy analysis revealed tunable luminescence properties with an increasing Yb 3+ content in series of GdVO 4 : x% Yb 3+ , y% Tm 3+ , 5% Eu 3+ (x = 5, 10, 15, 20; y = 0.1, 0.5, 1) phosphors. For Yb 3+ , Tm 3+ , and Eu 3+ - codoped phosphors we observed bands related to the 1 G 4 → 3 H 6 and 1 G 4 → 3 F 4 transitions of Tm 3+ ions, occurred through the cooperative up-conversion mechanism, where two nearby Yb 3+ ions were involved in near-infrared absorption. Moreover, the GdVO 4 : 20% Yb 3+ , 0.5% Tm 3+ , 5% Eu 3+ showed the most outstanding color tunability from red color (x = 0.6338, y = 0.3172) under UV to blue color (x = 0.2640, y = 0.1988) under NIR excitation, which can be applied in anti-counterfeiting activity.

Dual mode

Mode (computer interface)

10.1038/s41598-023-37608-w

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Citations (9)