Temperature induced emission enhancement and investigation of Nd3+→Yb3+ energy transfer efficiency in NaGdF4:Nd3+, Yb3+, Er3+ upconverting nanoparticles

Mikalauskaite, I.; Plečkaitytė, Gintarė; Sinušaitė, Lauryna; Plaušinaitienė, Valentina; Katelnikovas, Artūras; Beganskienė, Aldona

doi:10.1016/j.jlumin.2020.117237

Cited by 17 publications

(7 citation statements)

References 44 publications

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“…The calculated S r and S a values for NaGdF 4 :Yb,Er@NaGdF 4 :Yb,Nd core–shell UCNPs at 37 °C (310.15 K) (in the physiological temperature range) were 1.16% K –1 and 2.52 × 10 –3 K –1 , respectively. Furthermore, at 303 K, S r is 1.20% K –1 , which is in good agreement with reported literature results, where the calculated S r is similar and varies in the range of 1.11–1.24% K –1 at the same temperature. ,, The same experiment was conducted by using 980 nm laser irradiation. A comparison of the thermosensing properties of UCNPs under excitation by 980 and 808 nm laser irradiation is presented in the ESI as Figure S5.…”

Section: Resultssupporting

confidence: 91%

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Biocompatible Upconverting Nanoprobes for Dual-Modal Imaging and Temperature Sensing

Ezerskyte,

Morkvenas,

Venius

et al. 2024

ACS Appl. Nano Mater.

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The demand for multimodal nanomaterials has intensified in recent years driven by the need for ultrasensitive bioimaging probes and accurate temperature monitoring in biological objects. Among the different multimodal nanomaterials that have been extensively studied in the past decade, upconverting nanoparticles are among the most promising. In this paper, we report the synthesis of upconverting nanoparticles with complex core−shell compositions, capable of being excited by 808 or 980 nm laser irradiation and exhibiting a good MRI response. The synthesized nanoparticles also demonstrated high colloidal stability in both aqueous and biological media as well as temperature-sensing capabilities, including the physiological range. Furthermore, the upconversion nanoparticles exhibited significantly lower cytotoxicity for HEK293T cells than the commercially available MRI contrast agent Gd-DTPA.

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Section: Resultssupporting

confidence: 91%

“…The Er 3+ emission in the green spectral region is unique because it contains two thermally coupled energy levels, 2 H 11/2 and 4 S 3/2 . The energy difference between these levels is approximately 700–800 cm –1 . Therefore, Er 3+ -doped materials can be used as temperature sensors (Boltzmann thermometers) .…”

Section: Resultsmentioning

confidence: 99%

Biocompatible Upconverting Nanoprobes for Dual-Modal Imaging and Temperature Sensing

Ezerskyte,

Morkvenas,

Venius

et al. 2024

ACS Appl. Nano Mater.

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“…Instead of Nd 3+ ions absorbing 808 nm photons, the Yb 3+ ions can absorb 980 nm photons directly to make the transition of 2 F 7/2 → 2 F 5/2 . , On the one hand, Yb 3+ as the sensitizer will transfer energy to the adjacent Nd 3+ ions through ET processes, populating the 2 G 9/2 and 4 F 3/2 states of Nd 3+ ions. Especially, the CR1 process can significantly populate the 4 F 5/2 state.…”

Section: Resultsmentioning

confidence: 99%

Simultaneous Observation of Visible Upconversion and Near-Infrared Downconversion in SrF₂:Nd³⁺/Yb³⁺/Er³⁺ Nanocrystals and Their Application for Detecting Metal Ions under Dual-Wavelength Excitation

Wang

Yang

et al. 2022

ACS Omega

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In this work, a sequence of Nd 3+ , Yb 3+ , and Er 3+ tridoped SrF 2 nanocrystals (NCs) is synthesized by a hydrothermal method. Both the efficient near-infrared downconversion luminescence (DCL) and visible upconversion luminescence (UCL) of the Er 3+ and Nd 3+ ions are simultaneously observed and systematically demonstrated under dual-wavelength excitation (808 and 980 nm continuous-wave lasers). Subsequently, the SrF 2 :Nd 3+ /Yb 3+ /Er 3+ (15/4/0.2 mol %) NCs with the strongest luminescence were utilized for detecting the metal ion concentrations under 808 nm excitation. The results reveal that both the UCL and DCL gradually decrease as the metal ion concentrations increase, and high sensitivity is obtained for Cu 2+ ions with a detection limit of 0.22 nM (∼650 nm) and 0.63 nM (∼976 nm). In addition, these SrF 2 :Nd 3+ /Yb 3+ /Er 3+ NCs are further demonstrated to achieve a solid-state display under 980 nm excitation, exhibiting obvious “red” and “green” patterns by varying the doping rare earth ion concentrations.

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“…Temperature sensors have received extensive attention due to their wide application in chemistry, electromagnetism, and biomedicine, , while noninvasive optical thermometry sensors based on the luminescence intensity ratio (LIR) of lanthanide rare earth ions have aroused wide anticipation by virtue of their nondestructiveness, prompt response, and multienvironment adaptiveness, which can accommodate diverse demands of remote, nondestructive, and microsize testing. − In particular, Er 3+ ions serving in noncontact optical thermometry have attracted intense interest, as Er 3+ ions possess a thermally coupled level ( 2 H 11/2 and 4 S 3/2 ) of appropriate energy separation, − and the introduction of Yb 3+ ions as a sensitizer enhances the intensity of temperature-dependent upconversion luminescence (UCL) emission at the excitation of a near-infrared laser. − Moreover, the utilization of UCL for thermal feedback is an ideal way to realize noninvasive temperature measurement and avoid fluorescent interference from organisms in downconversion methods. − Therefore, UCL for temperature sensing has attracted the researchers’ interest.…”

Section: Introductionmentioning

confidence: 99%

Cooperatively Responding Thermal Sensing in Erbium(III)-Functionalized NaGdF₄/PAN Crystal-Implanted Fiber

et al. 2021

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Er3+/Yb3+-doped NaGdF4 crystal-implanted fiber (CIF) is synthesized by the electrospinning technique, which possesses excellent crystal dispersibility, glorious flexibility, and high crystal utilization, realizing temperature sensing in complex and harsh environments. The combination of main and auxiliary sensing endows CIF with self-calibration functionality to realize accurate temperature measurement. Serving as the main thermal response signal for a noninvasive nanothermometer, the absolute and relative sensitivities for effective green emissions are up to 0.446% K–1 at 423 K and 1.018% K–1 at 303 K, respectively. Further, the introduction of a blue emission peak is to participate in the thermal response as an auxiliary indicator to inspect the accuracy of the main thermal sensing data where the absolute and relative sensitivities reach 28.473 and 1.522% K–1 at 313 and 303 K, respectively. The flexible CIF with cooperative response thermometry possesses a broad prospect in nanodomain optical thermometers, which present extraordinary potential in nondestructive temperature monitoring and flexible temperature sensing elements.

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Temperature induced emission enhancement and investigation of Nd3+→Yb3+ energy transfer efficiency in NaGdF4:Nd3+, Yb3+, Er3+ upconverting nanoparticles

Cited by 17 publications

References 44 publications

Biocompatible Upconverting Nanoprobes for Dual-Modal Imaging and Temperature Sensing

Biocompatible Upconverting Nanoprobes for Dual-Modal Imaging and Temperature Sensing

Simultaneous Observation of Visible Upconversion and Near-Infrared Downconversion in SrF₂:Nd³⁺/Yb³⁺/Er³⁺ Nanocrystals and Their Application for Detecting Metal Ions under Dual-Wavelength Excitation

Cooperatively Responding Thermal Sensing in Erbium(III)-Functionalized NaGdF₄/PAN Crystal-Implanted Fiber

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Temperature induced emission enhancement and investigation of Nd3+→Yb3+ energy transfer efficiency in NaGdF4:Nd3+, Yb3+, Er3+ upconverting nanoparticles

Cited by 17 publications

References 44 publications

Biocompatible Upconverting Nanoprobes for Dual-Modal Imaging and Temperature Sensing

Biocompatible Upconverting Nanoprobes for Dual-Modal Imaging and Temperature Sensing

Simultaneous Observation of Visible Upconversion and Near-Infrared Downconversion in SrF2:Nd3+/Yb3+/Er3+ Nanocrystals and Their Application for Detecting Metal Ions under Dual-Wavelength Excitation

Cooperatively Responding Thermal Sensing in Erbium(III)-Functionalized NaGdF4/PAN Crystal-Implanted Fiber

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Product

Resources

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Simultaneous Observation of Visible Upconversion and Near-Infrared Downconversion in SrF₂:Nd³⁺/Yb³⁺/Er³⁺ Nanocrystals and Their Application for Detecting Metal Ions under Dual-Wavelength Excitation

Cooperatively Responding Thermal Sensing in Erbium(III)-Functionalized NaGdF₄/PAN Crystal-Implanted Fiber