Synthesis, luminescence and scintillation of rare earth doped lanthanum fluoride nanoparticles

Jacobsohn, L.G.; Sprinkle, K. B.; Kucera, Courtney; James, Tiffany L.; Roberts, Steven A.; Qian, Haijun; Yukihara, E.G.; DeVol, Timothy A.; Ballato, John

doi:10.1016/j.optmat.2010.07.025

Cited by 29 publications

(12 citation statements)

References 29 publications

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“…LaF 3 , was chosen as the host matrix for terbium due to the low phonon energy it exhibits which minimizes the quenching potential of Tb 3+ ion emissions [7][8][9][10]. The organic portion refers to UV light harvesting ligands that bind to the surface of the nanocrystal to form a coordination complex.…”

Section: Introductionmentioning

confidence: 99%

Light-Emitting Polymer Nanocomposites

Gipson¹,

Ellerbrock²,

Stevens³

et al. 2011

Journal of Nanotechnology

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Inorganic nanoparticles doped with optically active rare-earth ions and coated with organic ligands were synthesized in order to create fluorescent polymethyl methacrylate (PMMA) nanocomposites. Two different aromatic ligands (acetylsalicylic acid, ASA and 2-picolinic acid, PA) were utilized in order to functionalize the surface of Tb 3+ : LaF 3 nanocrystals. The selected aromatic ligand systems were characterized using infrared spectroscopy, thermal analysis, rheological measurements, and optical spectroscopy. Nanoparticles produced in situ with the PMMA contained on average 10 wt% loading of Tb 3+ : LaF 3 at a 6 : 1 La : Tb molar ratio and ∼7 wt% loading of 4 : 1 La : Tb molar ratio for the PA and ASA systems, respectively. Measured diameters ranged from 457±176 nm to 150 ± 105 nm which is indicative that agglomerates formed during the synthesis process. Both nanocomposites exhibited the characteristic Tb 3+ emission peaks upon direct ion excitation (350 nm) and ligand excitation (PA : 265 nm and ASA : 275 nm).

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Section: Introductionmentioning

confidence: 99%

Light-Emitting Polymer Nanocomposites

Gipson¹,

Ellerbrock²,

Stevens³

et al. 2011

Journal of Nanotechnology

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“…Reverse micelle synthesis, sol-gel chemistry, solvothermal, hydrothermal and aqueous solution-polymer precipitation have all been utilized to produce inorganic nanoparticles [17,[25][26][27][28]. Reverse micelle synthesis require significant amounts of surfactants to produce limited amounts of nanoparticles [28].…”

Section: Methods Of Nanoparticle Synthesis Reviewmentioning

confidence: 99%

“…At these small sizes, surface interactions strongly influence their properties [17]. The electrical double layer is a representation of the ion distribution at the interface between a solid and a solvent in solution/suspension as is illustrated in Figure 2.…”

Section: Review Of Electrical Double Layer Theorymentioning

confidence: 99%

The Influence of Synthesis Parameters on Particle Size and Photoluminescence Characteristics of Ligand Capped Tb3+:LaF3

et al. 2011

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Organic ligand surface-treated Tb 3+ :LaF 3 was synthesized in water and methanol for subsequent incorporation into polymethyl methacrylate (PMMA) via solution-precipitation chemistry in order to produce optically active polymer nanocomposites. Nanoparticle agglomerate diameters ranged from 388 ± 188 nm when synthesized in water and 37 ± 2 nm when synthesized in methanol. Suspension stability is paramount for producing optically transparent materials. Methanol nanoparticle synthesized at a pH of 3 exhibited the smallest agglomerate size. Optical spectroscopy, dynamic light scattering, transmission electron microscopy, scanning transmission electron microscopy, and zeta potential analysis were used to characterize the particles synthesized.

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“…[21] Thep henomenon of scintillation involves ad iverse range of physical processes in which high-energy ionizing radiation is transformed into visible photons.S pecifically,i onizing radiation is converted into energetic electron-hole pairs,w hich are then used to excite ions that emit luminescence when returning to their ground state. [22] It is well known that elements with ah igh Z value can increase the efficacyo ft he ionizing radiation and act as radiosensitizers.W hen these elements are bombarded by Xor g rays,they generate numerous Auger electrons to enhance the therapeutic efficacyinapractice called Auger therapy. [23] This effect can be described by the equation (Z/E) 3 ,inwhich E is the energy from the radionuclide source and Z is the atomic number of the excitable material.…”

Section: Gamma Scintillationmentioning

confidence: 99%

Radionuclide‐Activated Nanomaterials and Their Biomedical Applications

Ferreira

Rosenkrans

et al. 2019

Angew Chem Int Ed

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Radio‐nanomedicine, or the use of radiolabeled nanoparticles in nuclear medicine, has attracted much attention in the last few decades. Since the discovery of Cerenkov radiation and its employment in Cerenkov luminescence imaging, the combination of nanomaterials and Cerenkov radiation emitters has been revolutionizing the way nanomaterials are perceived in the field: from simple inert carriers of radioactivity to activatable nanomaterials for both diagnostic and therapeutic applications. Herein, we provide a comprehensive review on the types of nanomaterials that have been used to interact with Cerenkov radiation and the gamma and beta scintillation of radionuclides, as well as on their biological applications.

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Synthesis, luminescence and scintillation of rare earth doped lanthanum fluoride nanoparticles

Cited by 29 publications

References 29 publications

Light-Emitting Polymer Nanocomposites

Light-Emitting Polymer Nanocomposites

The Influence of Synthesis Parameters on Particle Size and Photoluminescence Characteristics of Ligand Capped Tb3+:LaF3

Radionuclide‐Activated Nanomaterials and Their Biomedical Applications

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