Speghini, Adolfo

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Authority KeyName Variants
orcid::0000-0002-6840-0006
  • Speghini, Adolfo (2)
  • Speghini, A. (1)
Projects

Author's Bibliography

Neodymium-doped nanoparticles for infrared fluorescence bioimaging: The role of the host

del Rosal, Blanca; Perez-Delgado, Alberto; Misiak, Malgorzata; Bednarkiewicz, Artur; Vanetsev, Alexander S.; Orlovskii, Yurii; Jovanović, Dragana J.; Dramićanin, Miroslav; Rocha, Ueslen; Kumar, K. Upendra; Jacinto, Carlos; Navarro, Elizabeth; Martin Rodriguez, Emma; Pedroni, Marco; Speghini, Adolfo; Hirata, Gustavo A.; Martin, I. R.; Jaque, Daniel

(2015)

TY  - JOUR
AU  - del Rosal, Blanca
AU  - Perez-Delgado, Alberto
AU  - Misiak, Malgorzata
AU  - Bednarkiewicz, Artur
AU  - Vanetsev, Alexander S.
AU  - Orlovskii, Yurii
AU  - Jovanović, Dragana J.
AU  - Dramićanin, Miroslav
AU  - Rocha, Ueslen
AU  - Kumar, K. Upendra
AU  - Jacinto, Carlos
AU  - Navarro, Elizabeth
AU  - Martin Rodriguez, Emma
AU  - Pedroni, Marco
AU  - Speghini, Adolfo
AU  - Hirata, Gustavo A.
AU  - Martin, I. R.
AU  - Jaque, Daniel
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/775
AB  - The spectroscopic properties of different infrared-emitting neodymium-doped nanoparticles (LaF3:Nd 3+, SrF2:Nd3+, NaGdF4:Nd3+, NaYF4:Nd3+, KYF4:Nd3+, GdVO4:Nd3+, and Nd:YAG) have been systematically analyzed. A comparison of the spectral shapes of both emission and absorption spectra is presented, from which the relevant role played by the host matrix is evidenced. The lack of a universal optimum system for infrared bioimaging is discussed, as the specific bioimaging application and the experimental setup for infrared imaging determine the neodymiumdoped nanoparticle to be preferentially used in each case. (C) 2015 AIP Publishing LLC.
T2  - Journal of Applied Physics
T1  - Neodymium-doped nanoparticles for infrared fluorescence bioimaging: The role of the host
VL  - 118
IS  - 14
DO  - 10.1063/1.4932669
ER  - 
@article{
author = "del Rosal, Blanca and Perez-Delgado, Alberto and Misiak, Malgorzata and Bednarkiewicz, Artur and Vanetsev, Alexander S. and Orlovskii, Yurii and Jovanović, Dragana J. and Dramićanin, Miroslav and Rocha, Ueslen and Kumar, K. Upendra and Jacinto, Carlos and Navarro, Elizabeth and Martin Rodriguez, Emma and Pedroni, Marco and Speghini, Adolfo and Hirata, Gustavo A. and Martin, I. R. and Jaque, Daniel",
year = "2015",
abstract = "The spectroscopic properties of different infrared-emitting neodymium-doped nanoparticles (LaF3:Nd 3+, SrF2:Nd3+, NaGdF4:Nd3+, NaYF4:Nd3+, KYF4:Nd3+, GdVO4:Nd3+, and Nd:YAG) have been systematically analyzed. A comparison of the spectral shapes of both emission and absorption spectra is presented, from which the relevant role played by the host matrix is evidenced. The lack of a universal optimum system for infrared bioimaging is discussed, as the specific bioimaging application and the experimental setup for infrared imaging determine the neodymiumdoped nanoparticle to be preferentially used in each case. (C) 2015 AIP Publishing LLC.",
journal = "Journal of Applied Physics",
title = "Neodymium-doped nanoparticles for infrared fluorescence bioimaging: The role of the host",
volume = "118",
number = "14",
doi = "10.1063/1.4932669"
}
del Rosal, B., Perez-Delgado, A., Misiak, M., Bednarkiewicz, A., Vanetsev, A. S., Orlovskii, Y., Jovanović, D. J., Dramićanin, M., Rocha, U., Kumar, K. U., Jacinto, C., Navarro, E., Martin Rodriguez, E., Pedroni, M., Speghini, A., Hirata, G. A., Martin, I. R.,& Jaque, D.. (2015). Neodymium-doped nanoparticles for infrared fluorescence bioimaging: The role of the host. in Journal of Applied Physics, 118(14).
https://doi.org/10.1063/1.4932669
del Rosal B, Perez-Delgado A, Misiak M, Bednarkiewicz A, Vanetsev AS, Orlovskii Y, Jovanović DJ, Dramićanin M, Rocha U, Kumar KU, Jacinto C, Navarro E, Martin Rodriguez E, Pedroni M, Speghini A, Hirata GA, Martin IR, Jaque D. Neodymium-doped nanoparticles for infrared fluorescence bioimaging: The role of the host. in Journal of Applied Physics. 2015;118(14).
doi:10.1063/1.4932669 .
del Rosal, Blanca, Perez-Delgado, Alberto, Misiak, Malgorzata, Bednarkiewicz, Artur, Vanetsev, Alexander S., Orlovskii, Yurii, Jovanović, Dragana J., Dramićanin, Miroslav, Rocha, Ueslen, Kumar, K. Upendra, Jacinto, Carlos, Navarro, Elizabeth, Martin Rodriguez, Emma, Pedroni, Marco, Speghini, Adolfo, Hirata, Gustavo A., Martin, I. R., Jaque, Daniel, "Neodymium-doped nanoparticles for infrared fluorescence bioimaging: The role of the host" in Journal of Applied Physics, 118, no. 14 (2015),
https://doi.org/10.1063/1.4932669 . .
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Structural and spectroscopic studies of Eu3+ doped Lu2O3-Gd2O3 solid solutions

Krsmanović, Radenka; Antić, Željka; Speghini, Adolfo; Brik, Mikhail G.; Bartova, Barbora; Bettinelli, Marco; Dramićanin, Miroslav

(2014)

TY  - JOUR
AU  - Krsmanović, Radenka
AU  - Antić, Željka
AU  - Speghini, Adolfo
AU  - Brik, Mikhail G.
AU  - Bartova, Barbora
AU  - Bettinelli, Marco
AU  - Dramićanin, Miroslav
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5944
AB  - A series of europium doped (LuxGd1-x)(2)O-3 (x = 1, 0.75, 0.5, 0.25 and 0) nanocrystalline powders were prepared using a polymer complex solution method based on a polyethylene glycol (PEG) as fuel. The samples were systematically characterized by powder X-ray diffraction, scanning and transmission electron microscopies and luminescence spectroscopy. The powders consisted of well-crystalline, cubic phase nanoparticles of 20-50 nm in size, which unit cell parameter increased with Gd content complying with Vegards law. Upon blue light excitation all samples exhibited strong red luminescence typical of trivalent europium ion. The maximum splitting of the F-7(1) manifold changed linearly with the composition change and decreased with lowering of the crystal field strength. Relatively long lifetime values were obtained for D-5(0) (similar to 1.4 ms) and D-5(1) (similar to 120 mu s) levels. For all samples we estimated theoretical densities, refractive index coefficients, optical filling factors and Z(eff), in order to estimate the Judd-Ofelt intensity parameters and branching ratios. The calculated lifetime of D-5(0) level was in line with experimentally obtained luminescence lifetime values. Relative integrated emissions were measured on all samples and Gd2O3 sample proved to have a maximum amount of the characteristic Eu3+ luminescence. (C) 2014 Elsevier B.V. All rights reserved.
T2  - Optical Materials
T1  - Structural and spectroscopic studies of Eu3+ doped Lu2O3-Gd2O3 solid solutions
VL  - 36
IS  - 6
SP  - 1083
EP  - 1091
DO  - 10.1016/j.optmat.2014.01.039
ER  - 
@article{
author = "Krsmanović, Radenka and Antić, Željka and Speghini, Adolfo and Brik, Mikhail G. and Bartova, Barbora and Bettinelli, Marco and Dramićanin, Miroslav",
year = "2014",
abstract = "A series of europium doped (LuxGd1-x)(2)O-3 (x = 1, 0.75, 0.5, 0.25 and 0) nanocrystalline powders were prepared using a polymer complex solution method based on a polyethylene glycol (PEG) as fuel. The samples were systematically characterized by powder X-ray diffraction, scanning and transmission electron microscopies and luminescence spectroscopy. The powders consisted of well-crystalline, cubic phase nanoparticles of 20-50 nm in size, which unit cell parameter increased with Gd content complying with Vegards law. Upon blue light excitation all samples exhibited strong red luminescence typical of trivalent europium ion. The maximum splitting of the F-7(1) manifold changed linearly with the composition change and decreased with lowering of the crystal field strength. Relatively long lifetime values were obtained for D-5(0) (similar to 1.4 ms) and D-5(1) (similar to 120 mu s) levels. For all samples we estimated theoretical densities, refractive index coefficients, optical filling factors and Z(eff), in order to estimate the Judd-Ofelt intensity parameters and branching ratios. The calculated lifetime of D-5(0) level was in line with experimentally obtained luminescence lifetime values. Relative integrated emissions were measured on all samples and Gd2O3 sample proved to have a maximum amount of the characteristic Eu3+ luminescence. (C) 2014 Elsevier B.V. All rights reserved.",
journal = "Optical Materials",
title = "Structural and spectroscopic studies of Eu3+ doped Lu2O3-Gd2O3 solid solutions",
volume = "36",
number = "6",
pages = "1083-1091",
doi = "10.1016/j.optmat.2014.01.039"
}
Krsmanović, R., Antić, Ž., Speghini, A., Brik, M. G., Bartova, B., Bettinelli, M.,& Dramićanin, M.. (2014). Structural and spectroscopic studies of Eu3+ doped Lu2O3-Gd2O3 solid solutions. in Optical Materials, 36(6), 1083-1091.
https://doi.org/10.1016/j.optmat.2014.01.039
Krsmanović R, Antić Ž, Speghini A, Brik MG, Bartova B, Bettinelli M, Dramićanin M. Structural and spectroscopic studies of Eu3+ doped Lu2O3-Gd2O3 solid solutions. in Optical Materials. 2014;36(6):1083-1091.
doi:10.1016/j.optmat.2014.01.039 .
Krsmanović, Radenka, Antić, Željka, Speghini, Adolfo, Brik, Mikhail G., Bartova, Barbora, Bettinelli, Marco, Dramićanin, Miroslav, "Structural and spectroscopic studies of Eu3+ doped Lu2O3-Gd2O3 solid solutions" in Optical Materials, 36, no. 6 (2014):1083-1091,
https://doi.org/10.1016/j.optmat.2014.01.039 . .
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Structural and luminescence investigation on gadolinium gallium garnet nanocrystalline powders prepared by solution combustion synthesis

Krsmanović, Radenka; Morozov, V. A.; Lebedev, O. I.; Polizzi, S.; Speghini, A.; Bettinelli, M.; Tendeloo, Gustaaf Van

(2007)

TY  - JOUR
AU  - Krsmanović, Radenka
AU  - Morozov, V. A.
AU  - Lebedev, O. I.
AU  - Polizzi, S.
AU  - Speghini, A.
AU  - Bettinelli, M.
AU  - Tendeloo, Gustaaf Van
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3228
AB  - Nanocrystalline powders of undoped and lanthanide (Pr3+, Tm3+)- doped gadolinium gallium garnet, Gd3Ga5O12 (GGG), were prepared by propellant synthesis and studied by x-ray powder diffraction (XRD), electron diffraction (ED), high-resolution electron microscopy (HREM) and luminescence spectroscopy. The x-ray diffraction patterns of the GGG samples were analysed using the Rietveld method. The Rietveld refinement reveals the existence of two garnet-type phases: both are cubic (space group Ia $(3) over bar $d) with a slightly different lattice parameter and probably a slightly different composition. Electron diffraction and electron microscopy measurements confirm the x-ray diffraction results. EDX measurements for lanthanide-doped samples show that stable solid solutions with composition Gd(3-x)Ln(x)Ga(5)O(12), x approximate to 0.3 ( Ln = Pr; Tm) have been obtained. The luminescence properties of the Tm3+ -doped nanocrystalline GGG samples were measured and analysed.
T2  - Nanotechnology
T1  - Structural and luminescence investigation on gadolinium gallium garnet nanocrystalline powders prepared by solution combustion synthesis
VL  - 18
IS  - 32
DO  - 10.1088/0957-4484/18/32/325604
ER  - 
@article{
author = "Krsmanović, Radenka and Morozov, V. A. and Lebedev, O. I. and Polizzi, S. and Speghini, A. and Bettinelli, M. and Tendeloo, Gustaaf Van",
year = "2007",
abstract = "Nanocrystalline powders of undoped and lanthanide (Pr3+, Tm3+)- doped gadolinium gallium garnet, Gd3Ga5O12 (GGG), were prepared by propellant synthesis and studied by x-ray powder diffraction (XRD), electron diffraction (ED), high-resolution electron microscopy (HREM) and luminescence spectroscopy. The x-ray diffraction patterns of the GGG samples were analysed using the Rietveld method. The Rietveld refinement reveals the existence of two garnet-type phases: both are cubic (space group Ia $(3) over bar $d) with a slightly different lattice parameter and probably a slightly different composition. Electron diffraction and electron microscopy measurements confirm the x-ray diffraction results. EDX measurements for lanthanide-doped samples show that stable solid solutions with composition Gd(3-x)Ln(x)Ga(5)O(12), x approximate to 0.3 ( Ln = Pr; Tm) have been obtained. The luminescence properties of the Tm3+ -doped nanocrystalline GGG samples were measured and analysed.",
journal = "Nanotechnology",
title = "Structural and luminescence investigation on gadolinium gallium garnet nanocrystalline powders prepared by solution combustion synthesis",
volume = "18",
number = "32",
doi = "10.1088/0957-4484/18/32/325604"
}
Krsmanović, R., Morozov, V. A., Lebedev, O. I., Polizzi, S., Speghini, A., Bettinelli, M.,& Tendeloo, G. V.. (2007). Structural and luminescence investigation on gadolinium gallium garnet nanocrystalline powders prepared by solution combustion synthesis. in Nanotechnology, 18(32).
https://doi.org/10.1088/0957-4484/18/32/325604
Krsmanović R, Morozov VA, Lebedev OI, Polizzi S, Speghini A, Bettinelli M, Tendeloo GV. Structural and luminescence investigation on gadolinium gallium garnet nanocrystalline powders prepared by solution combustion synthesis. in Nanotechnology. 2007;18(32).
doi:10.1088/0957-4484/18/32/325604 .
Krsmanović, Radenka, Morozov, V. A., Lebedev, O. I., Polizzi, S., Speghini, A., Bettinelli, M., Tendeloo, Gustaaf Van, "Structural and luminescence investigation on gadolinium gallium garnet nanocrystalline powders prepared by solution combustion synthesis" in Nanotechnology, 18, no. 32 (2007),
https://doi.org/10.1088/0957-4484/18/32/325604 . .
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