Articles de revues : « Luminescence nanothermometry »

1

Jaque, Daniel, et Fiorenzo Vetrone. « Luminescence nanothermometry ». Nanoscale 4, n^o 15 (2012) : 4301. http://dx.doi.org/10.1039/c2nr30764b.

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Bednarkiewicz, Artur, Lukasz Marciniak, Luís D. Carlos et Daniel Jaque. « Standardizing luminescence nanothermometry for biomedical applications ». Nanoscale 12, n^o 27 (2020) : 14405–21. http://dx.doi.org/10.1039/d0nr03568h.

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Ji, Zeliang, Yao Cheng, Xiangshui Cui, Hang Lin, Ju Xu et Yuansheng Wang. « Heating-induced abnormal increase in Yb3+ excited state lifetime and its potential application in lifetime luminescence nanothermometry ». Inorganic Chemistry Frontiers 6, n^o 1 (2019) : 110–16. http://dx.doi.org/10.1039/c8qi01052h.

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Marciniak, L., et A. Bednarkiewicz. « The influence of dopant concentration on temperature dependent emission spectra in LiLa1−x−yEuxTbyP4O12 nanocrystals : toward rational design of highly-sensitive luminescent nanothermometers ». Physical Chemistry Chemical Physics 18, n^o 23 (2016) : 15584–92. http://dx.doi.org/10.1039/c6cp00898d.

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del Rosal, Blanca, Erving Ximendes, Ueslen Rocha et Daniel Jaque. « In Vivo Luminescence Nanothermometry : from Materials to Applications ». Advanced Optical Materials 5, n^o 1 (11 octobre 2016) : 1600508. http://dx.doi.org/10.1002/adom.201600508.

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Valenta, Jan, Michael Greben, Goutam Pramanik, Klaudia Kvakova et Petr Cigler. « Reversible photo- and thermal-effects on the luminescence of gold nanoclusters : implications for nanothermometry ». Physical Chemistry Chemical Physics 23, n^o 20 (2021) : 11954–60. http://dx.doi.org/10.1039/d0cp06467j.

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Su, Xianlong, Yue Wen, Wei Yuan, Ming Xu, Qian Liu, Chunhui Huang et Fuyou Li. « Lifetime-based nanothermometry in vivo with ultra-long-lived luminescence ». Chemical Communications 56, n^o 73 (2020) : 10694–97. http://dx.doi.org/10.1039/d0cc04459h.

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Kong, Mengya, Yuyang Gu, Yingjie Chai, Jiaming Ke, Yulai Liu, Xincheng Xu, Zhanxian Li, Wei Feng et Fuyou Li. « Luminescence interference-free lifetime nanothermometry pinpoints in vivo temperature ». Science China Chemistry 64, n^o 6 (30 mars 2021) : 974–84. http://dx.doi.org/10.1007/s11426-020-9948-8.

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Singh, Prashansha, Neha Jain, Shraddha Shukla, Anish Kumar Tiwari, Kaushal Kumar, Jai Singh et Avinash C. Pandey. « Luminescence nanothermometry using a trivalent lanthanide co-doped perovskite ». RSC Advances 13, n^o 5 (2023) : 2939–48. http://dx.doi.org/10.1039/d2ra05935e.

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Thiem, Jonas, Axel Ruehl et Detlev Ristau. « Influence of Pumping Regime on Temperature Resolution in Nanothermometry ». Nanomaterials 11, n^o 7 (9 juillet 2021) : 1782. http://dx.doi.org/10.3390/nano11071782.

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In recent years, optical nanothermometers have seen huge improvements in terms of precision as well as versatility, and several research efforts have been directed at adapting novel active materials or further optimizing the temperature sensitivity. The signal-to-noise ratio of the emission lines is commonly seen as the only limitation regarding high precision measurements. The role of re-absorption caused by a population of lower energy levels, however, has so far been neglected as a potential bottleneck for both high resolution and material selection. In this work, we conduct a study of the time dependent evolution of population densities in different luminescence nanothermometer classes under the commonly used pulsed excitation scheme. It is shown that the population of lower energy levels varies when the pump source fluctuates in terms of power and pulse duration. This leads to a significant degradation in temperature resolution, with limiting values of 0.5 K for common systems. Our study on the error margin indicates that either short pulsed or continuous excitation should be preferred for high precision measurements. Additionally, we derive conversion factors, enabling the re-calibration of currently available intensity ratio measurements to the steady state regime, thus facilitating the transition from pulse regimes to continuous excitation.

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Maciejewska, K., A. Bednarkiewicz et L. Marciniak. « NIR luminescence lifetime nanothermometry based on phonon assisted Yb3+–Nd3+ energy transfer ». Nanoscale Advances 3, n^o 17 (2021) : 4918–25. http://dx.doi.org/10.1039/d1na00285f.

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Tzeng, Yan-Kai, Pei-Chang Tsai, Hsiou-Yuan Liu, Oliver Y. Chen, Hsiang Hsu, Fu-Goul Yee, Ming-Shien Chang et Huan-Cheng Chang. « Time-Resolved Luminescence Nanothermometry with Nitrogen-Vacancy Centers in Nanodiamonds ». Nano Letters 15, n^o 6 (12 mai 2015) : 3945–52. http://dx.doi.org/10.1021/acs.nanolett.5b00836.

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Jia, Mochen, Zuoling Fu, Guofeng Liu, Zhen Sun, Panpan Li, Anqi Zhang, Fang Lin, Bofei Hou et Guanying Chen. « NIR‐II/III Luminescence Ratiometric Nanothermometry with Phonon‐Tuned Sensitivity ». Advanced Optical Materials 8, n^o 6 (mars 2020) : 1901173. http://dx.doi.org/10.1002/adom.201901173.

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Ruiz, Diego, Blanca del Rosal, María Acebrón, Cristina Palencia, Chen Sun, Juan Cabanillas-González, Miguel López-Haro, Ana B. Hungría, Daniel Jaque et Beatriz H. Juarez. « Ag/Ag2S Nanocrystals for High Sensitivity Near-Infrared Luminescence Nanothermometry ». Advanced Functional Materials 27, n^o 6 (28 décembre 2016) : 1604629. http://dx.doi.org/10.1002/adfm.201604629.

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Tan, Meiling, Feng Li, Ning Cao, Hui Li, Xin Wang, Chenyang Zhang, Daniel Jaque et Guanying Chen. « Accurate In Vivo Nanothermometry through NIR‐II Lanthanide Luminescence Lifetime ». Small 16, n^o 48 (5 novembre 2020) : 2004118. http://dx.doi.org/10.1002/smll.202004118.

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Marciniak, L., W. Piotrowski, M. Szalkowski, V. Kinzhybalo, M. Drozd, M. Dramicanin et A. Bednarkiewicz. « Highly sensitive luminescence nanothermometry and thermal imaging facilitated by phase transition ». Chemical Engineering Journal 427 (janvier 2022) : 131941. http://dx.doi.org/10.1016/j.cej.2021.131941.

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Nexha, Albenc, Maria Cinta Pujol, Joan Josep Carvajal, Francesc Díaz et Magdalena Aguiló. « Luminescence nanothermometry via white light emission in Ho3+, Tm3+:Y2O3 colloidal nanocrystals ». Journal of Luminescence 247 (juillet 2022) : 118854. http://dx.doi.org/10.1016/j.jlumin.2022.118854.

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Cerón, Elizabeth Navarro, Dirk H. Ortgies, Blanca del Rosal, Fuqiang Ren, Antonio Benayas, Fiorenzo Vetrone, Dongling Ma et al. « Hybrid Nanostructures for High-Sensitivity Luminescence Nanothermometry in the Second Biological Window ». Advanced Materials 27, n^o 32 (14 juillet 2015) : 4781–87. http://dx.doi.org/10.1002/adma.201501014.

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Santos, Harrisson D. A., Erving C. Ximendes, Maria del Carmen Iglesias-de la Cruz, Irene Chaves-Coira, Blanca del Rosal, Carlos Jacinto, Luis Monge et al. « In Vivo Early Tumor Detection and Diagnosis by Infrared Luminescence Transient Nanothermometry ». Advanced Functional Materials 28, n^o 43 (6 septembre 2018) : 1803924. http://dx.doi.org/10.1002/adfm.201803924.

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Korczak, Zuzanna, Magdalena Dudek, Martyna Majak, Małgorzata Misiak, Łukasz Marciniak, Marcin Szalkowski et Artur Bednarkiewicz. « Sensitized photon avalanche nanothermometry in Pr³⁺ and Yb³⁺ co-doped NaYF₄ colloidal nanoparticles ». Low Temperature Physics 49, n^o 3 (mars 2023) : 322–29. http://dx.doi.org/10.1063/10.0017243.

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Photon avalanche (PA) is a highly nonlinear luminescence phenomenon that occurs in lanthanide doped materials. PA exhibits a very steep power law relationship between luminescence intensity and the optical pump power. Due to the mechanism of PA emission, even weak perturbations to the energy looping and energy distribution within excited levels of lanthanide emitters are expected to significantly modify luminescent properties. Therefore, in this work, we experimentally study the impact of temperature (from – 175 to 175 °C, with 25 °C steps) on the sensitized PA emission in NaYF4 nanoparticles co-doped with 15% of Yb3+ and 0.5% of Pr3+ ions under 852 nm pumping wavelength. Significant variations of the PA nonlinearity ( S = 4.5–9), PA gain (from 50 up to 175), and PA threshold (from 100 up to 700 kW/cm2) were observed under temperature rise from – 175 to 175 °C, respectively. The relative temperature sensitivities based on luminescence intensity changes were larger than 1.5% °C–1 in the whole temperature range, reaching the maximal value of 7.5% °C–1 at 0 °C. Moreover, a new thermometric parameter was proposed, namely, the PA pump power threshold, which exhibited over 0.5% °C–1 relative sensitivities in the same wide temperature range. Owing to PA properties, the temperature sensitivity range and the corresponding relative sensitivities may be intentionally tuned by selecting the appropriate pump intensity in respect to the power dependence relationship. These studies not only provide a better understanding of fundamental processes and susceptibility of the sensitized photon avalanche emission to temperature variation, but also show the possibility of using PA materials as sensitive (nano)thermometers.

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Li, Lin, Chun Zhang, Lei Xu, Changqing Ye, Shuoran Chen, Xiaomei Wang et Yanlin Song. « Luminescence Ratiometric Nanothermometry Regulated by Tailoring Annihilators of Triplet–Triplet Annihilation Upconversion Nanomicelles ». Angewandte Chemie 133, n^o 51 (15 novembre 2021) : 26929–37. http://dx.doi.org/10.1002/ange.202110830.

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Li, Lin, Chun Zhang, Lei Xu, Changqing Ye, Shuoran Chen, Xiaomei Wang et Yanlin Song. « Luminescence Ratiometric Nanothermometry Regulated by Tailoring Annihilators of Triplet–Triplet Annihilation Upconversion Nanomicelles ». Angewandte Chemie International Edition 60, n^o 51 (15 novembre 2021) : 26725–33. http://dx.doi.org/10.1002/anie.202110830.

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Vetrone, Fiorenzo. « (Invited) Rare Earth Doped Nanoparticles ». ECS Meeting Abstracts MA2022-02, n^o 36 (9 octobre 2022) : 1319. http://dx.doi.org/10.1149/ma2022-02361319mtgabs.

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Luminescent nanomaterials that can be excited, as well as emit, in the near-infrared (NIR) have been investigated for use in a plethora of applications including nanomedicine, nanoelectronics, biosensing, bioimaging, photovoltaics, photocatalysis, etc. The use of NIR light for excitation mitigates some of the drawbacks associated with high-energy (UV or blue) excitation, for example, little to no background autofluorescence from the specimen under investigation as well as no incurred photodamage. Moreover, one of the biggest limitations is of course, that of penetration. As such, NIR light can penetrate tissues much better than high-energy light especially when these wavelengths lie within the three biological windows (BW-I: 700-950, BW-II: 1000-1350, BW-III: 1550-1870 nm) where tissues are optically transparent. At the forefront of NIR excited nanomaterials are rare earth doped nanoparticles, which due to their 4f electronic energy states can undergo conventional (Stokes) luminescence and emit in the three NIR biological windows. However, unlike other classes of nanoparticles, they can also undergo a multiphoton process (known as upconversion) where the NIR excitation light is converted to higher energies resulting in anti-Stokes luminescence spanning the UV-visible-NIR regions. Perhaps the biggest impact of such materials would be in the field of disease diagnostics and therapeutics, now commonly referred to as theranostics. Due to the versatility of their optical properties, it now becomes possible to generate high-energy light (UV or blue) in situ to trigger other light activated therapeutic modalities (i.e. drug release) while using the NIR emission for diagnostics (i.e. bioimaging, nanothermometry). Here, we present the synthesis of various NIR excited (and emitting) rare earth doped core/shell (and multishell) nanoparticles and demonstrate how their luminescence properties can be exploited for potential use in diverse biomedical applications.

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Vetrone, Fiorenzo. « (Invited) Manipulating Light Emission from Rare Earth Doped Nanoparticles for Applications in Theranostics ». ECS Meeting Abstracts MA2023-02, n^o 34 (22 décembre 2023) : 1632. http://dx.doi.org/10.1149/ma2023-02341632mtgabs.

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Luminescent nanomaterials that can be excited, as well as emit, in the near-infrared (NIR) have been investigated for use in a plethora of applications including nanomedicine, nanoelectronics, biosensing, bioimaging, photovoltaics, photocatalysis, etc. The use of NIR light for excitation mitigates some of the drawbacks associated with high-energy (UV or blue) excitation, for example, little to no background autofluorescence from the specimen under investigation as well as no incurred photodamage. Moreover, one of the biggest limitations is of course, that of penetration. As such, NIR light can penetrate tissues much better than high-energy light especially when these wavelengths lie within the three biological windows (BW-I: 700-950, BW-II: 1000-1350, BW-III: 1550-1870 nm) where tissues are optically transparent. At the forefront of NIR excited nanomaterials are rare earth doped nanoparticles, which due to their 4f electronic energy states can undergo conventional (Stokes) luminescence and emit in the three NIR biological windows. However, unlike other classes of nanoparticles, they can also undergo a multiphoton process (known as upconversion) where the NIR excitation light is converted to higher energies resulting in anti-Stokes luminescence spanning the UV-visible-NIR regions. Perhaps the biggest impact of such materials would be in the field of disease diagnostics and therapeutics, now commonly referred to as theranostics. Due to the versatility of their optical properties, it now becomes possible to generate high-energy light (UV or blue) in situ to trigger other light activated therapeutic modalities (i.e. drug release) while using the NIR emission for diagnostics (i.e. bioimaging, nanothermometry). Here, we present the synthesis of various NIR excited (and emitting) rare earth doped core/shell (and multishell) nanoparticles and demonstrate how their luminescence properties can be exploited for potential use in diverse biomedical applications.

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Pudovkin, M. S., D. A. Koryakovtseva, E. V. Lukinova, S. L. Korableva, R. Sh Khusnutdinova, A. G. Kiiamov, A. S. Nizamutdinov et V. V. Semashko. « Luminescence Nanothermometry Based on Pr3+ : LaF3 Single Core and Pr3+ : LaF3/LaF3 Core/Shell Nanoparticles ». Advances in Materials Science and Engineering 2019 (4 septembre 2019) : 1–14. http://dx.doi.org/10.1155/2019/2618307.

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Core Pr3+ : LaF3 (CPr = 1%) plate-like nanoparticles (nanoplates), core/shell Pr3+ : LaF3 (CPr = 1%)/LaF3 nanoplates, core Pr3+ : LaF3 (CPr = 1%) sphere-like nanoparticles (nanospheres), and core/shell Pr3+ : LaF3 (CPr = 1%)/LaF3 nanospheres were synthesized via the coprecipitation method of synthesis. The nanoparticles (NPs) were characterized by means of transmission electron microscopy, X-ray diffraction, and optical spectroscopy. The formation of the shell was proved by detecting the increase in physical sizes, sizes of coherent scattering regions, and luminescence lifetimes of core/shell NPs comparing with single core NPs. The average physical sizes of core nanoplates, core/shell nanoplates, core nanospheres, and core/shell nanospheres were 62.2 ± 0.9, 74.7 ± 1.2, 13.8 ± 0.9 and 22.0 ± 1.2 nm, respectively. The formation of the NP shell led to increasing of effective luminescence lifetime τeff of the 3P0 state of Pr3+ ions for the core nanoplates, core/shell nanoplates, core nanospheres, and core/shell nanospheres the values of τeff were 2.3, 3.6, 3.2, and 4.7 μsec, respectively (at 300 K). The values of absolute sensitivity Sa for fluorescence intensity ratio (FIR) thermometry was 0.01 K−1 at 300 K for all the samples. The FIR sensitivity can be attributed to the fact that 3P1 and 3P0 states share their electronic populations according to the Boltzmann process. The values of Sa for lifetime thermometry for core nanoplates, core/shell nanoplates, core nanospheres, and core/shell nanospheres were (36.4 ± 3.1) · 10−4, (70.7 ± 5.9) · 10−4, (40.7 ± 2.6) · 10−4, and (68.8 ± 2.4) · 10−4 K−1, respectively.

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Kolesnikov, I. E., E. V. Golyeva, M. A. Kurochkin, E. Lähderanta et M. D. Mikhailov. « Nd3+-doped YVO4 nanoparticles for luminescence nanothermometry in the first and second biological windows ». Sensors and Actuators B : Chemical 235 (novembre 2016) : 287–93. http://dx.doi.org/10.1016/j.snb.2016.05.095.

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Shen, Yingli, José Lifante, Irene Zabala‐Gutierrez, María Fuente‐Fernández, Miriam Granado, Nuria Fernández, Jorge Rubio‐Retama et al. « Reliable and Remote Monitoring of Absolute Temperature during Liver Inflammation via Luminescence‐Lifetime‐Based Nanothermometry ». Advanced Materials 34, n^o 7 (9 janvier 2022) : 2107764. http://dx.doi.org/10.1002/adma.202107764.

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Xu, Hanyu, Mochen Jia, Zhiying Wang, Yanling Wei et Zuoling Fu. « Enhancing the Upconversion Luminescence and Sensitivity of Nanothermometry through Advanced Design of Dumbbell-Shaped Structured Nanoparticles ». ACS Applied Materials & ; Interfaces 13, n^o 51 (15 décembre 2021) : 61506–17. http://dx.doi.org/10.1021/acsami.1c17900.

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Plakhotnik, Taras, et Daniel Gruber. « Luminescence of nitrogen-vacancy centers in nanodiamonds at temperatures between 300 and 700 K : perspectives on nanothermometry ». Physical Chemistry Chemical Physics 12, n^o 33 (2010) : 9751. http://dx.doi.org/10.1039/c001132k.

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Vetrone, Fiorenzo. « (Invited) Multi-Architectured Lanthanide Doped Nanoparticles for Theranostics ». ECS Meeting Abstracts MA2022-01, n^o 53 (7 juillet 2022) : 2210. http://dx.doi.org/10.1149/ma2022-01532210mtgabs.

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Light triggered theranostic (therapy and diagnostic) nanoplatforms have gained a considerable attention in recent years. In theranostics, light as an external trigger stands out due to its non-invasiveness, high local precision and temporal resolution. Many such nanoplatforms employ high-energy (visible or UV) light to initiate the individual therapeutic and diagnostic modalities. However, light at these wavelengths suffers from inherent drawbacks such as having little to no penetration in living tissue, inducing autofluorescence from inherent fluorophores or chromophores in tissues and causing photodamage. The use of near-infrared (NIR) light for excitation mitigates such drawbacks associated with high-energy excitation, for example, little to no background autofluorescence from the specimen under investigation as well as no incurred photodamage. Moreover, one of the biggest limitations is that of penetration and NIR light can penetrate tissues much better than high-energy light especially when these wavelengths lie within the three biological windows where tissues are optically transparent. At the forefront of NIR excited nanomaterials are lanthanide doped nanoparticles, which can undergo conventional (Stokes) luminescence and emit in the NIR biological windows. However, unlike other classes of nanoparticles, they can also undergo a multiphoton excitation process where the NIR excitation light is converted to higher energies resulting in anti-Stokes luminescence spanning the UV-visible-NIR regions (known as upconversion). Thus, it now becomes possible to generate upconverted high-energy light (UV or visible) in situ to trigger other light activated therapeutic modalities (i.e. drug release) while using the NIR emission for diagnostics (i.e. bioimaging, nanothermometry). Here, we demonstrate how the luminescence properties (upconversion and NIR) of various lanthanide doped core/shell (and multishell) nanoparticles can be exploited for potential use in theranostics.

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Wang, Tianhui, Taizhong Xiao, Youzhun Fan, Fangyu He, Yongjin Li, Yuehong Peng, Qi Wang et al. « Abnormally heat-enhanced Yb excited state lifetimes in Bi7F11O5 nanocrystals and the potential applications in lifetime luminescence nanothermometry ». Journal of Materials Chemistry C 7, n^o 44 (2019) : 13811–17. http://dx.doi.org/10.1039/c9tc04378k.

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A heating-induced monotonous increase in the Yb³⁺ excited state (²F_5/2) lifetimes is found in Yb³⁺ single doped Bi₇F₁₁O₅ nanocrystals.

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Ayachi, F., K. Saidi, M. Dammak, W. Chaabani, I. Mediavilla-Martínez et J. Jiménez. « Dual-mode luminescence of Er3+/Yb 3+ codoped LnP0.5V0.5O4 (Ln=Y, Gd, La) for highly sensitive optical nanothermometry ». Materials Today Chemistry 27 (janvier 2023) : 101352. http://dx.doi.org/10.1016/j.mtchem.2022.101352.

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Mukhopadhyay, Lakshmi, et Vineet Kumar Rai. « Investigation of photoluminescence properties, Judd–Ofelt analysis, luminescence nanothermometry and optical heating behaviour of Er3+/Eu3+/Yb3+:NaZnPO4 nanophosphors ». New Journal of Chemistry 42, n^o 15 (2018) : 13122–34. http://dx.doi.org/10.1039/c8nj02320d.

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Rohani, Shadi, Marta Quintanilla, Salvatore Tuccio, Francesco De Angelis, Eugenio Cantelar, Alexander O. Govorov, Luca Razzari et Fiorenzo Vetrone. « Enhanced Luminescence, Collective Heating, and Nanothermometry in an Ensemble System Composed of Lanthanide-Doped Upconverting Nanoparticles and Gold Nanorods ». Advanced Optical Materials 3, n^o 11 (19 août 2015) : 1606–13. http://dx.doi.org/10.1002/adom.201500380.

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Maciejewska, Kamila, Blazej Poźniak, Marta Tikhomirov, Adrianna Kobylińska et Łukasz Marciniak. « Synthesis, Cytotoxicity Assessment and Optical Properties Characterization of Colloidal GdPO4:Mn2+, Eu3+ for High Sensitivity Luminescent Nanothermometers Operating in the Physiological Temperature Range ». Nanomaterials 10, n^o 3 (28 février 2020) : 421. http://dx.doi.org/10.3390/nano10030421.

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Herein, a novel synthesis method of colloidal GdPO4:Mn2+,Eu3+ nanoparticles for luminescent nanothermometry is proposed. XRD, TEM, DLS, and zeta potential measurements confirmed the crystallographic purity and reproducible morphology of the obtained nanoparticles. The spectroscopic properties of GdPO4:Mn2+,Eu3+ with different amounts of Mn2+ and Eu3+ were analyzed in a physiological temperature range. It was found that GdPO4:1%Eu3+,10%Mn2+ nanoparticles revealed extraordinary performance for noncontact temperature sensing with relative sensitivity SR = 8.88%/°C at 32 °C. Furthermore, the biocompatibility and safety of GdPO4:15%Mn2+,1%Eu3+ was confirmed by cytotoxicity studies. These results indicated that colloidal GdPO4 doped with Mn2+ and Eu3+ is a very promising candidate as a luminescent nanothermometer for in vitro applications.

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Nexha, Albenc, Maria Cinta Pujol, Francesc Díaz, Magdalena Aguiló et Joan J. Carvajal. « Luminescence nanothermometry using self-assembled Er3+, Yb3+ doped Y2O3 nanodiscs : Might the upconversion mechanism condition their use as primary thermometers ? » Optical Materials 134 (décembre 2022) : 113216. http://dx.doi.org/10.1016/j.optmat.2022.113216.

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Kniec, Karolina, Marta Tikhomirov, Blazej Pozniak, Karolina Ledwa et Lukasz Marciniak. « LiAl5O8:Fe3+ and LiAl5O8:Fe3+, Nd3+ as a New Luminescent Nanothermometer Operating in 1st Biological Optical Window ». Nanomaterials 10, n^o 2 (22 janvier 2020) : 189. http://dx.doi.org/10.3390/nano10020189.

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New types of contactless luminescence nanothermometers, namely, LiAl5O8:Fe3+ and LiAl5O8:Fe3+, Nd3+ are presented for the first time, revealing the potential for applications in biological systems. The temperature-sensing capability of the nanocrystals was analyzed in wide range of temperature (−150 to 300 °C). The emission intensity of the Fe3+ ions is affected by the change in temperature, which induces quenching of the 4T1 (4G) → 6A1 (6S) Fe3+ transition situated in the 1st biological window. The highest relative sensitivity in the temperature range (0 to 50 °C) was found to be 0.82% °C (at 26 °C) for LiAl5O8: 0.05% Fe3+ nanoparticles that are characterized by long luminescent lifetime of 5.64 ms. In the range of low and high temperatures the Smax was calculated for LiAl5O8:0.5% Fe3+ to be 0.92% °C at −100 °C and for LiAl5O8:0.01% Fe3+ to be 0.79% °C at 150 °C. The cytotoxicity assessment carried out on the LiAl5O8:Fe3+ nanocrystals, demonstrated that they are biocompatible and may be utilized for in vivo temperature sensing. The ratiometric luminescent nanothermometer, LiAl5O8:Fe3+, Nd3+, which was used as a reference, possesses an Smax = 0.56%/°C at −80 °C, upon separate excitation of Fe3+ and Nd3+ ions using 266 nm and 808 nm light, respectively.

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Senthilselvan, J., Sinju Thomas, L. Anbharasi, Debashrita Sarkar, Venkata N. K. B. Adusumalli, S. Arun Kumar, S. Yamini, M. Gunaseelan, J. Manonmani et Venkataramanan Mahalingam. « EDTA functionalization of SrF2:Yb,Er nanoparticles by hydrothermal synthesis : Intense red upconversion, NIR-to-NIR emission and luminescence nanothermometry characteristics ». Journal of Materials Science : Materials in Electronics 30, n^o 23 (30 octobre 2019) : 20376–92. http://dx.doi.org/10.1007/s10854-019-02311-y.

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Savchuk, Oleksandr, Joan Josep Carvajal Marti, Concepción Cascales, Patricia Haro-Gonzalez, Francisco Sanz-Rodríguez, Magdalena Aguilo et Francesc Diaz. « Bifunctional Tm3+,Yb3+:GdVO4@SiO2 Core-Shell Nanoparticles in HeLa Cells : Upconversion Luminescence Nanothermometry in the First Biological Window and Biolabelling in the Visible ». Nanomaterials 10, n^o 5 (21 mai 2020) : 993. http://dx.doi.org/10.3390/nano10050993.

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The bifunctional possibilities of Tm,Yb:GdVO4@SiO2 core-shell nanoparticles for temperature sensing by using the near-infrared (NIR)-excited upconversion emissions in the first biological window, and biolabeling through the visible emissions they generate, were investigated. The two emission lines located at 700 and 800 nm, that arise from the thermally coupled 3F2,3 and 3H4 energy levels of Tm3+, were used to develop a luminescent thermometer, operating through the Fluorescence Intensity Ratio (FIR) technique, with a very high thermal relative sensitivity. Moreover, since the inert shell surrounding the luminescent active core allows for dispersal of the nanoparticles in water and biological compatible fluids, we investigated the penetration depth that can be realized in biological tissues with their emissions in the NIR range, achieving a value of 0.8 mm when excited at powers of 50 mW. After their internalization in HeLa cells, a low toxicity was observed and the potentiality for biolabelling in the visible range was demonstrated, which facilitated the identification of the location of the nanoparticles inside the cells, and the temperature determination.

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Runowski, Marcin, Andrii Shyichuk, Artur Tymiński, Tomasz Grzyb, Víctor Lavín et Stefan Lis. « Multifunctional Optical Sensors for Nanomanometry and Nanothermometry : High-Pressure and High-Temperature Upconversion Luminescence of Lanthanide-Doped Phosphates—LaPO4/YPO4:Yb3+–Tm3+ ». ACS Applied Materials & ; Interfaces 10, n^o 20 (3 mai 2018) : 17269–79. http://dx.doi.org/10.1021/acsami.8b02853.

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Vetrone, Fiorenzo. « (Invited) Luminescence Nanothermometers : Using Light to Detect Temperature ». ECS Meeting Abstracts MA2023-02, n^o 63 (22 décembre 2023) : 2989. http://dx.doi.org/10.1149/ma2023-02632989mtgabs.

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Rare earth doped nanoparticles have recently emerged as versatile luminescent probes for a number of biological applications resulting from their interesting photophysical properties. These nanoparticles can be excited with near-infrared (NIR) light, which is a strict requirement for biomedical applications due its light penetration capabilities. Furthermore, rare earth doped nanoparticles possess a multitude of 4f electronic energy states and excitation with NIR light can therefore lead to different excitation mechanisms. For example, following NIR excitation, the nanoparticles can undergo upconversion where multiple emissions are observed with energies higher than the excitation wavelength. Also, they can undergo conventional luminescence where emission at lower energies than the excitation wavelength can be observed (known as downshifted luminescence). Here, we show that it is possible to harness these various emissions (upconverted and downshifted) to design luminescence nanothermometers capable of detecting temperature in living organisms.

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Li, Lu, Xuesong Qu, Guo-Hui Pan et Jung Hyun Jeong. « Novel Photoluminescence and Optical Thermometry of Solvothermally Derived Tetragonal ZrO2:Ti4+,Eu3+ Nanocrystals ». Chemosensors 12, n^o 4 (15 avril 2024) : 62. http://dx.doi.org/10.3390/chemosensors12040062.

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In this paper, we report on the solvothermal preparation and detailed characterization of pristine and intentionally doped zirconium dioxide (ZrO2) nanocrystals (NCs, ~5 nm) with Eu3+ or Ti4+/Eu3+ ions using alkoxide precursors. The results indicated that the ZrO2 NCs were dominantly of a tetragonal phase (t-ZrO2) with a small proportion of monoclinic ZrO2 (m-ZrO2). The high purity of t-ZrO2 NCs could be synthesized with more Eu3+ doping. It was found that the as-obtained ZrO2 NCs contain some naturally present Ti4+ ions originating from precursors, but were being overlooked commonly, and some carbon impurities produced during synthesis. These species showed distinct photoluminescence (PL) properties. At least two types of Eu3+, located at low- and high-symmetry sites (probably sevenfold and eightfold oxygen coordination), respectively, were demonstrated to build into the lattice structure of t-ZrO2 NCs together. The cationic dopants were illustrated to be distributed non-randomly over the sites normally occupied by Zr, while Ti impurities preferentially occupied the sites near the low-symmetry site of Eu3+, yielding efficient energy transfer from the titanate groups to the neighboring Eu3+. Luminescence nanothermometry could measure temperature in a non-contact and remote way and could find great potentials in micro/nano-electronics, integrated photonics, and biomedicine. On the basis of the dual-emitting combination strategy involving the white broadband CT (Ti3+→O−) emissions of the titanate groups and red sharp Eu3+ emissions, t-ZrO2:Eu3+ nanophosphors were demonstrated to be ratiometric self-referencing optical thermometric materials, with a working range of 130–230 K and a maxima of relative sensitivity of ~1.9% K−1 at 230 K.

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Martín Rodríguez, Emma, Gabriel López-Peña, Eduardo Montes, Ginés Lifante, José García Solé, Daniel Jaque, Luis Armando Diaz-Torres et Pedro Salas. « Persistent luminescence nanothermometers ». Applied Physics Letters 111, n^o 8 (21 août 2017) : 081901. http://dx.doi.org/10.1063/1.4990873.

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Zeler, Justyna, Eugeniusz Zych et Mateusz Kwiatkowski. « SrAl₁₂O₁₉:Eu,Cr As Luminescence Thermometers ». ECS Meeting Abstracts MA2023-02, n^o 50 (22 décembre 2023) : 2466. http://dx.doi.org/10.1149/ma2023-02502466mtgabs.

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Luminescent nanothermometers offer several approaches to determine the absolute temperature. Mostly, temperature-stimulated changes in the intensity ratio of emission bands, emission kinetics, band/emission line width, or luminescence band/line peak position are explored. The list is longer and is still growing. In our project, the Cr3+, Eu2+-based aluminates materials were designed taking into account the possibility to work as non-contact luminescent thermometers using mentioned above approaches. In Figure 1 the luminescence spectra of SrAl12O19:Eu,Cr phosphor are shown in the temperature range of 15-500 K. The emission comes from both the directly excited ions, Eu2+ and Cr3+. Particularly strong changes with temperature can be seen in the Eu2+ emission around 350 - 470 nm and Cr3+ above 670 nm. Luminescent mechanisms of energy transfer between specific activators of the aluminates lattice will be presented, the consequence of which is obtaining by the material sophisticated thermometric properties in a wide range of measured temperature, from cryogenic to around 500 K. The research finances by the Polish National Science Centre under grant #UMO2018/31/B/ST4/00924 and partially by program “Excellence Initiative – Research University” (IDUB) for years 2020-2026 for University of Wrocław (grant # BPIDUB.4610.678.2021) Figure 1

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Zhou, You, Bing Yan et Fang Lei. « Postsynthetic lanthanide functionalization of nanosized metal–organic frameworks for highly sensitive ratiometric luminescent thermometry ». Chem. Commun. 50, n^o 96 (2014) : 15235–38. http://dx.doi.org/10.1039/c4cc07038k.

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A facile and general approach was demonstrated to generate ratiometric luminescent nanothermometers through postsynthetic incorporation of lanthanide cations within nanosized metal–organic frameworks bearing the open bipyridine sites. The obtained nanothermometers exhibit ultrahigh sensitivities.

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Glais, Estelle, Agnès Maître, Bruno Viana et Corinne Chanéac. « Experimental measurement of local high temperature at the surface of gold nanorods using doped ZnGa2O4 as a nanothermometer ». Nanoscale Advances 3, n^o 10 (2021) : 2862–69. http://dx.doi.org/10.1039/d1na00010a.

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Nanothermometry using luminescent particles is applied for the temperature readout of photoexcitated gold nanorods with high spatial resolution using common optical equipment highlighting the limitations of conventional thermometers and IR camera.

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Lucchini, Giacomo, Adolfo Speghini, Patrizia Canton, Fiorenzo Vetrone et Marta Quintanilla. « Engineering efficient upconverting nanothermometers using Eu3+ ions ». Nanoscale Advances 1, n^o 2 (2019) : 757–64. http://dx.doi.org/10.1039/c8na00118a.

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Li, Hao, Esmaeil Heydari, Yinyan Li, Hui Xu, Shiqing Xu, Liang Chen et Gongxun Bai. « Multi-Mode Lanthanide-Doped Ratiometric Luminescent Nanothermometer for Near-Infrared Imaging within Biological Windows ». Nanomaterials 13, n^o 1 (3 janvier 2023) : 219. http://dx.doi.org/10.3390/nano13010219.

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Owing to its high reliability and accuracy, the ratiometric luminescent thermometer can provide non-contact and fast temperature measurements. In particular, the nanomaterials doped with lanthanide ions can achieve multi-mode luminescence and temperature measurement by modifying the type of doped ions and excitation light source. The better penetration of the near-infrared (NIR) photons can assist bio-imaging and replace thermal vision cameras for photothermal imaging. In this work, we prepared core–shell cubic phase nanomaterials doped with lanthanide ions, with Ba2LuF7 doped with Er3+/Yb3+/Nd3+ as the core and Ba2LaF7 as the coating shell. The nanoparticles were designed according to the passivation layer to reduce the surface energy loss and enhance the emission intensity. Green upconversion luminescence can be observed under both 980 nm and 808 nm excitation. A single and strong emission band can be obtained under 980 nm excitation, while abundant and weak emission bands appear under 808 nm excitation. Meanwhile, multi-mode ratiometric optical thermometers were achieved by selecting different emission peaks in the NIR window under 808 nm excitation for non-contact temperature measurement at different tissue depths. The results suggest that our core–shell NIR nanoparticles can be used to assist bio-imaging and record temperature for biomedicine.

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Kieu Giang, Lam Thi, Karolina Trejgis, Łukasz Marciniak, Agnieszka Opalińska, Iwona E. Koltsov et Witold Łojkowski. « Correction : Synthesis and characterizations of YZ-BDC:Eu³⁺,Tb³⁺ nanothermometers for luminescence-based temperature sensing ». RSC Advances 12, n^o 23 (2022) : 14644. http://dx.doi.org/10.1039/d2ra90049a.

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Correction for ‘Synthesis and characterizations of YZ-BDC:Eu3+,Tb3+ nanothermometers for luminescence-based temperature sensing’ by Lam Thi Kieu Giang et al., RSC Adv., 2022, 12, 13065–13073, https://doi.org/10.1039/D2RA01759H.

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Labrador-Páez, Lucía, Marco Pedroni, Adolfo Speghini, José García-Solé, Patricia Haro-González et Daniel Jaque. « Reliability of rare-earth-doped infrared luminescent nanothermometers ». Nanoscale 10, n^o 47 (2018) : 22319–28. http://dx.doi.org/10.1039/c8nr07566b.

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