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Articles de revues sur le sujet « Nanoscintillators »

Auteur : Grafiati
Publié le 9 mars 2023
Mis à jour le 10 mars 2023

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1

Jacobsohn, Luiz G., Kevin B. Sprinkle, Steven A. Roberts, Courtney J. Kucera, Tiffany L. James, Eduardo G. Yukihara, Timothy A. DeVol et John Ballato. « Fluoride Nanoscintillators ». Journal of Nanomaterials 2011 (2011) : 1–6. http://dx.doi.org/10.1155/2011/523638.

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A preliminary investigation of the scintillation response of rare earth-doped fluoride nanoparticles is reported. Nanoparticles of CaF2 : Eu, BaF2 : Ce, and LaF3 : Eu were produced by precipitation methods using ammonium di-n-octadecyldithiophosphate (ADDP) as a ligand that controls growth and lessens agglomeration. The structure and morphology were characterized by means of X-ray diffraction and transmission electron microscopy, while the scintillation properties of the nanoparticles were determined by means of X-ray and241Am irradiation. The unique aspect of scintillation of nanoparticles is related to the migration of carriers in the nanoscintillator. Our results showed that even nanoparticles as small as ~4 nm in size effectively scintillate, despite the diffusion length ofe-hpairs being considerably larger than the nanoparticles themselves, and suggest that nanoparticles can be used for radiation detection.
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Procházková, Lenka, Tomáš Gbur, Václav Čuba, Vítězslav Jarý et Martin Nikl. « Fabrication of highly efficient ZnO nanoscintillators ». Optical Materials 47 (septembre 2015) : 67–71. http://dx.doi.org/10.1016/j.optmat.2015.07.001.

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Meng, Zhu, Benoit Mahler, Julien Houel, Florian Kulzer, Gilles Ledoux, Andrey Vasil'ev et Christophe Dujardin. « Perspectives for CdSe/CdS spherical quantum wells as rapid-response nano-scintillators ». Nanoscale 13, no 46 (2021) : 19578–86. http://dx.doi.org/10.1039/d1nr04781g.

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We explore the effect of shell thickness on the scintillation dynamics of CdS/CdSe/CdS spherical-quantum-well nanoscintillators under X-ray excitation, as compared to optical excitation at low and high powers.
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Bulin, Anne-Laure, Andrey Vasil'ev, Andrei Belsky, David Amans, Gilles Ledoux et Christophe Dujardin. « Modelling energy deposition in nanoscintillators to predict the efficiency of the X-ray-induced photodynamic effect ». Nanoscale 7, no 13 (2015) : 5744–51. http://dx.doi.org/10.1039/c4nr07444k.

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To evaluate the efficiency of the photodynamic effect induced by X-rays, we quantified the fraction of energy deposited in nanoscintillators after interactions with X or γ-rays, introducing ηnano as a new loss parameter.
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Secchi, Valeria, Angelo Monguzzi et Irene Villa. « Design Principles of Hybrid Nanomaterials for Radiotherapy Enhanced by Photodynamic Therapy ». International Journal of Molecular Sciences 23, no 15 (5 août 2022) : 8736. http://dx.doi.org/10.3390/ijms23158736.

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Radiation (RT) remains the most frequently used treatment against cancer. The main limitation of RT is its lack of specificity for cancer tissues and the limited maximum radiation dose that can be safely delivered without damaging the surrounding healthy tissues. A step forward in the development of better RT is achieved by coupling it with other treatments, such as photodynamic therapy (PDT). PDT is an anti-cancer therapy that relies on the light activation of non-toxic molecules—called photosensitizers—to generate ROS such as singlet oxygen. By conjugating photosensitizers to dense nanoscintillators in hybrid architectures, the PDT could be activated during RT, leading to cell death through an additional pathway with respect to the one activated by RT alone. Therefore, combining RT and PDT can lead to a synergistic enhancement of the overall efficacy of RT. However, the involvement of hybrids in combination with ionizing radiation is not trivial: the comprehension of the relationship among RT, scintillation emission of the nanoscintillator, and therapeutic effects of the locally excited photosensitizers is desirable to optimize the design of the hybrid nanoparticles for improved effects in radio-oncology. Here, we discuss the working principles of the PDT-activated RT methods, pointing out the guidelines for the development of effective coadjutants to be tested in clinics.
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Jung, J. Y., G. A. Hirata, G. Gundiah, S. Derenzo, W. Wrasidlo, S. Kesari, M. T. Makale et J. McKittrick. « Identification and development of nanoscintillators for biotechnology applications ». Journal of Luminescence 154 (octobre 2014) : 569–77. http://dx.doi.org/10.1016/j.jlumin.2014.05.040.

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Gupta, Santosh K., et Yuanbing Mao. « Recent advances, challenges, and opportunities of inorganic nanoscintillators ». Frontiers of Optoelectronics 13, no 2 (28 mai 2020) : 156–87. http://dx.doi.org/10.1007/s12200-020-1003-5.

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Mekki, H., L. Guerbous, H. Bousbia-salah, A. Boukerika et K. Lebbou. « Scintillation properties of (Lu1-x Y x )3Al5O12:Ce3+ nanoscintillator solid solution garnet materials ». Journal of Instrumentation 18, no 02 (1 février 2023) : P02007. http://dx.doi.org/10.1088/1748-0221/18/02/p02007.

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Abstract In this study, the scintillation properties of the (Lu1-x Y x )3Al5O12: 0.1 at.%Ce3+ mixed nanopowder scintillators synthesized by the sol-gel method were investigated. The light yield, energy resolution and scintillation decay kinetics for different substitutions of Lu3+ by Y3+ ion, namely 0 at.%, 5 at.%, 10 at.%, 15 at.% and 20 at.% were evaluated. The relative light yields of all LuYAG mixed samples were determined by the comparison method and the LuAG:0.1 at.%Ce3+ single crystal grown by the Czochralski technique was used as a reference detector. The scintillation decay kinetics was measured at the photomultiplier tube anode output and a fast digital oscilloscope was used to digitize signals. All measurements were performed under α-particles excitation from 241Am (E = 5.48 MeV) source to avoid light scattering in powder materials. Results show that the scintillation light yield was affected by the insertion of Y3+ ions in the LuAG host matrix and tends to improve in the range 10–20 at.% of Y3+ content. Furthermore, it was found that the main contribution in the energy resolution originates from the nanoscintillator material. The scintillation decay curves were well-fitted to a sum of three exponential functions, and the decay time constants were determined. Additionally, pulse shape discrimination of the mixed LuYAG nanoscintillators was also checked, and good discrimination of the kinetics measured under α-particles and γ-quanta from 137Cs (E = 662 keV) was observed.
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Chen, Xiaofeng, Xiaokun Li, Xiaoling Chen, Zhijian Yang, Xiangyu Ou, Zhongzhu Hong, Xiaoze Wang et al. « Flexible X-ray luminescence imaging enabled by cerium-sensitized nanoscintillators ». Journal of Luminescence 242 (février 2022) : 118589. http://dx.doi.org/10.1016/j.jlumin.2021.118589.

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Klassen, N. V., V. V. Kedrov, Y. A. Ossipyan, S. Z. Shmurak, I. M. Shmyt'ko, O. A. Krivko, E. A. Kudrenko et al. « Nanoscintillators for Microscopic Diagnostics of Biological and Medical Objects and Medical Therapy ». IEEE Transactions on NanoBioscience 8, no 1 (mars 2009) : 20–32. http://dx.doi.org/10.1109/tnb.2009.2016551.

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Scaffidi, Jonathan P., Molly K. Gregas, Benoit Lauly, Yan Zhang et Tuan Vo-Dinh. « Activity of Psoralen-Functionalized Nanoscintillators against Cancer Cells upon X-ray Excitation ». ACS Nano 5, no 6 (12 mai 2011) : 4679–87. http://dx.doi.org/10.1021/nn200511m.

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Procházková, Lenka, Václav Čuba, Alena Beitlerová, Vítězslav Jarý, Sergey Omelkov et Martin Nikl. « Ultrafast Zn(Cd,Mg)O:Ga nanoscintillators with luminescence tunable by band gap modulation ». Optics Express 26, no 22 (26 octobre 2018) : 29482. http://dx.doi.org/10.1364/oe.26.029482.

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Dinakaran, Deepak, Jayeeta Sengupta, Desmond Pink, Arun Raturi, Hua Chen, Nawaid Usmani, Piyush Kumar, John D. Lewis, Ravin Narain et Ronald B. Moore. « PEG-PLGA nanospheres loaded with nanoscintillators and photosensitizers for radiation-activated photodynamic therapy ». Acta Biomaterialia 117 (novembre 2020) : 335–48. http://dx.doi.org/10.1016/j.actbio.2020.09.029.

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Sahin, O., Y. Mackeyev, G. Vijay, S. Roy, V. Gonzalez, Y. Zahra, O. Tezcan et al. « X-Ray Triggered Nanoscintillators Photosensitize Pancreatic Cancer and Stimulate a Robust Systemic Immune Response ». International Journal of Radiation Oncology*Biology*Physics 114, no 3 (novembre 2022) : e524. http://dx.doi.org/10.1016/j.ijrobp.2022.07.2118.

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Klassen, N. V., V. N. Kurlov, S. N. Rossolenko, O. A. Krivko, A. D. Orlov et S. Z. Shmurak. « Scintillation fibers and nanoscintillators for improving the spatial, spectrometric, and time resolution of radiation detectors ». Bulletin of the Russian Academy of Sciences : Physics 73, no 10 (octobre 2009) : 1369–73. http://dx.doi.org/10.3103/s1062873809100141.

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Hong, Zhongzhu, Shuai He, Qinxia Wu, Xiaofeng Chen, Zhijian Yang, Xiaoze Wang, Shuheng Dai, Shumeng Bai, Qiushui Chen et Huanghao Yang. « One-pot synthesis of lanthanide-activated NaBiF4 nanoscintillators for high-resolution X-ray luminescence imaging ». Journal of Luminescence 254 (février 2023) : 119492. http://dx.doi.org/10.1016/j.jlumin.2022.119492.

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Chuang, Yao-Chen, Chia-Hui Chu, Shih-Hsun Cheng, Lun-De Liao, Tsung-Sheng Chu, Nai-Tzu Chen, Arthur Paldino, Yu Hsia, Chin-Tu Chen et Leu-Wei Lo. « Annealing-modulated nanoscintillators for nonconventional X-ray activation of comprehensive photodynamic effects in deep cancer theranostics ». Theranostics 10, no 15 (2020) : 6758–73. http://dx.doi.org/10.7150/thno.41752.

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Alves, Luiz Anastacio, Leonardo Braga Ferreira, Paulo Furtado Pacheco, Edith Alejandra Carreño Mendivelso, Pedro Celso Nogueira Teixeira et Robson Xavier Faria. « Pore forming channels as a drug delivery system for photodynamic therapy in cancer associated with nanoscintillators ». Oncotarget 9, no 38 (18 mai 2018) : 25342–54. http://dx.doi.org/10.18632/oncotarget.25150.

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Ahmad, Farooq, Xiaoyan Wang, Zhao Jiang, Xujiang Yu, Xinyi Liu, Rihua Mao, Xiaoyuan Chen et Wanwan Li. « Codoping Enhanced Radioluminescence of Nanoscintillators for X-ray-Activated Synergistic Cancer Therapy and Prognosis Using Metabolomics ». ACS Nano 13, no 9 (20 août 2019) : 10419–33. http://dx.doi.org/10.1021/acsnano.9b04213.

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Yu, Xujiang, Xinyi Liu, Weijie Wu, Kai Yang, Rihua Mao, Farooq Ahmad, Xiaoyuan Chen et Wanwan Li. « CT/MRI-Guided Synergistic Radiotherapy and X-ray Inducible Photodynamic Therapy Using Tb-Doped Gd-W-Nanoscintillators ». Angewandte Chemie 131, no 7 (18 janvier 2019) : 2039–44. http://dx.doi.org/10.1002/ange.201812272.

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Yu, Xujiang, Xinyi Liu, Weijie Wu, Kai Yang, Rihua Mao, Farooq Ahmad, Xiaoyuan Chen et Wanwan Li. « CT/MRI-Guided Synergistic Radiotherapy and X-ray Inducible Photodynamic Therapy Using Tb-Doped Gd-W-Nanoscintillators ». Angewandte Chemie International Edition 58, no 7 (21 janvier 2019) : 2017–22. http://dx.doi.org/10.1002/anie.201812272.

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Bulin, Anne‐Laure, Mans Broekgaarden, Frédéric Chaput, Victor Baisamy, Jan Garrevoet, Benoît Busser, Dennis Brueckner et al. « Radiation Dose‐Enhancement Is a Potent Radiotherapeutic Effect of Rare‐Earth Composite Nanoscintillators in Preclinical Models of Glioblastoma ». Advanced Science 7, no 20 (7 septembre 2020) : 2001675. http://dx.doi.org/10.1002/advs.202001675.

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Kirakci, Kaplan, Pavel Kubát, Karla Fejfarová, Jiří Martinčík, Martin Nikl et Kamil Lang. « X-ray Inducible Luminescence and Singlet Oxygen Sensitization by an Octahedral Molybdenum Cluster Compound : A New Class of Nanoscintillators ». Inorganic Chemistry 55, no 2 (24 décembre 2015) : 803–9. http://dx.doi.org/10.1021/acs.inorgchem.5b02282.

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Cooper, Daniel R., Konstantin Kudinov, Pooja Tyagi, Colin K. Hill, Stephen E. Bradforth et Jay L. Nadeau. « Photoluminescence of cerium fluoride and cerium-doped lanthanum fluoride nanoparticles and investigation of energy transfer to photosensitizer molecules ». Phys. Chem. Chem. Phys. 16, no 24 (2014) : 12441–53. http://dx.doi.org/10.1039/c4cp01044b.

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CexLa1−xF3 nanoparticles have been proposed for use in nanoscintillator–photosensitizer systems, aiming to combine the effects of radiotherapy and photodynamic therapy.
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Daouk, Joël, Mathilde Iltis, Batoul Dhaini, Denise Béchet, Philippe Arnoux, Paul Rocchi, Alain Delconte et al. « Terbium-Based AGuIX-Design Nanoparticle to Mediate X-ray-Induced Photodynamic Therapy ». Pharmaceuticals 14, no 5 (22 avril 2021) : 396. http://dx.doi.org/10.3390/ph14050396.

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X-ray-induced photodynamic therapy is based on the energy transfer from a nanoscintillator to a photosensitizer molecule, whose activation leads to singlet oxygen and radical species generation, triggering cancer cells to cell death. Herein, we synthesized ultra-small nanoparticle chelated with Terbium (Tb) as a nanoscintillator and 5-(4-carboxyphenyl succinimide ester)-10,15,20-triphenyl porphyrin (P1) as a photosensitizer (AGuIX@Tb-P1). The synthesis was based on the AGuIX@ platform design. AGuIX@Tb-P1 was characterised for its photo-physical and physico-chemical properties. The effect of the nanoparticles was studied using human glioblastoma U-251 MG cells and was compared to treatment with AGuIX@ nanoparticles doped with Gadolinium (Gd) and P1 (AGuIX@Gd-P1). We demonstrated that the AGuIX@Tb-P1 design was consistent with X-ray photon energy transfer from Terbium to P1. Both nanoparticles had similar dark cytotoxicity and they were absorbed in a similar rate within the cells. Pre-treated cells exposure to X-rays was related to reactive species production. Using clonogenic assays, establishment of survival curves allowed discrimination of the impact of radiation treatment from X-ray-induced photodynamic effect. We showed that cell growth arrest was increased (35%-increase) when cells were treated with AGuIX@Tb-P1 compared to the nanoparticle doped with Gd.
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Schneller, Perrine, Charlotte Collet, Quentin Been, Paul Rocchi, François Lux, Olivier Tillement, Muriel Barberi-Heyob, Hervé Schohn et Joël Daouk. « Added Value of Scintillating Element in Cerenkov-Induced Photodynamic Therapy ». Pharmaceuticals 16, no 2 (18 janvier 2023) : 143. http://dx.doi.org/10.3390/ph16020143.

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Cerenkov-induced photodynamic therapy (CR-PDT) with the use of Gallium-68 (68Ga) as an unsealed radioactive source has been proposed as an alternative strategy to X-ray-induced photodynamic therapy (X-PDT). This new strategy still aims to produce a photodynamic effect with the use of nanoparticles, namely, AGuIX. Recently, we replaced Gd from the AGuIX@ platform with Terbium (Tb) as a nanoscintillator and added 5-(4-carboxyphenyl succinimide ester)-10,15,20-triphenylporphyrin (P1) as a photosensitizer (referred to as AGuIX@Tb-P1). Although Cerenkov luminescence from 68Ga positrons is involved in nanoscintillator and photosensitizer activation, the cytotoxic effect obtained by PDT remains controversial. Herein, we tested whether free 68Ga could substitute X-rays of X-PDT to obtain a cytotoxic phototherapeutic effect. Results were compared with those obtained with AGuIX@Gd-P1 nanoparticles. We showed, by Monte Carlo simulations, the contribution of Tb scintillation in P1 activation by an energy transfer between Tb and P1 after Cerenkov radiation, compared to the Gd-based nanoparticles. We confirmed the involvement of the type II PDT reaction during 68Ga-mediated Cerenkov luminescence, id est, the transfer of photon to AGuIX@Tb-P1 which, in turn, generated P1-mediated singlet oxygen. The effect of 68Ga on cell survival was studied by clonogenic assays using human glioblastoma U-251 MG cells. Exposure of pre-treated cells with AGuIX@Tb-P1 to 68Ga resulted in the decrease in cell clone formation, unlike AGuIX@Gd-P1. We conclude that CR-PDT could be an alternative of X-PDT.
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Bulin, Anne-Laure, Charles Truillet, Rima Chouikrat, François Lux, Céline Frochot, David Amans, Gilles Ledoux et al. « X-ray-Induced Singlet Oxygen Activation with Nanoscintillator-Coupled Porphyrins ». Journal of Physical Chemistry C 117, no 41 (7 octobre 2013) : 21583–89. http://dx.doi.org/10.1021/jp4077189.

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Chen, Hongmin, Geoffrey D. Wang, Yen-Jun Chuang, Zipeng Zhen, Xiaoyuan Chen, Paul Biddinger, Zhonglin Hao et al. « Nanoscintillator-Mediated X-ray Inducible Photodynamic Therapy for In Vivo Cancer Treatment ». Nano Letters 15, no 4 (12 mars 2015) : 2249–56. http://dx.doi.org/10.1021/nl504044p.

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Morgan, Nicole Y., Gabriela Kramer-Marek, Paul D. Smith, Kevin Camphausen et Jacek Capala. « Nanoscintillator Conjugates as Photodynamic Therapy-Based Radiosensitizers : Calculation of Required Physical Parameters ». Radiation Research 171, no 2 (février 2009) : 236–44. http://dx.doi.org/10.1667/rr1470.1.

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Liu, Li Sha, Hao Hong Chen, Bi Qiu Liu, Bin Tang, Zhi Jia Sun et Jing Tai Zhao. « Microscintillator of Ce Doped β-NaLuF4 in Uniform Hexagonal Prism Morphology by a Facile Hydrothermal Method ». Applied Mechanics and Materials 541-542 (mars 2014) : 220–24. http://dx.doi.org/10.4028/www.scientific.net/amm.541-542.220.

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To explore micro-or nanoscintillator with a controllable architecture, a novel facile hydrothermal method easy for commercial run was used to synthesize pure and Ce doped β-NaLuF4 microcrystals at 453K. The morphology of uniform hexagonal prism with 3.3μm in diameter and 1.4 μm in thickness, respectively, is presented by the results of scanning electron microscopy (SEM). Powder X-ray diffraction (PXRD) patterns show the products are both pure hexagonal phase. Different from the undoped product without any irradiation, the Ce doped product has given strong broad band emission attributed to 5d4f transition of Ce3+, which can be potentially used as scintillator for biomedical imaging and detectors for high energy such as X-ray and γray. This synthetical strategy extends the understanding about nanomaterial chemistry and can be also useful for other systems such as fluorides, oxides and sulfides.
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Rivera, J., J. Dooley, M. Belley, I. Stanton, B. Langloss, M. Therien, T. Yoshizumi et S. Chang. « WE-AB-BRB-12 : Nanoscintillator Fiber-Optic Detector System for Microbeam Radiation Therapy Dosimetry ». Medical Physics 42, no 6Part36 (juin 2015) : 3652. http://dx.doi.org/10.1118/1.4925853.

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Kyung Cha, Bo, Seung Jun Lee, P. Muralidharan, Jon Yul Kim, Do Kyung Kim et Gyuseong Cho. « Characterization and imaging performance of nanoscintillator screen for high resolution X-ray imaging detectors ». Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment 633 (mai 2011) : S294—S296. http://dx.doi.org/10.1016/j.nima.2010.06.193.

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Sun, Wenjing, Zijian Zhou, Guillem Pratx, Xiaoyuan Chen et Hongmin Chen. « Nanoscintillator-Mediated X-Ray Induced Photodynamic Therapy for Deep-Seated Tumors : From Concept to Biomedical Applications ». Theranostics 10, no 3 (2020) : 1296–318. http://dx.doi.org/10.7150/thno.41578.

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Sengar, Prakhar, G. A. Hirata, Mario H. Farias et Felipe Castillón. « Morphological optimization and (3-aminopropyl) trimethoxy silane surface modification of Y3Al5O12:Pr nanoscintillator for biomedical applications ». Materials Research Bulletin 77 (mai 2016) : 236–42. http://dx.doi.org/10.1016/j.materresbull.2016.01.045.

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Daouk, Joël, Batoul Dhaini, Jérôme Petit, Céline Frochot, Muriel Barberi-Heyob et Hervé Schohn. « Can Cerenkov Light Really Induce an Effective Photodynamic Therapy ? » Radiation 1, no 1 (24 novembre 2020) : 5–17. http://dx.doi.org/10.3390/radiation1010002.

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Photodynamic therapy (PDT) is a promising therapeutic strategy for cancers where surgery and radiotherapy cannot be effective. PDT relies on the photoactivation of photosensitizers, most of the time by lasers to produced reactive oxygen species and notably singlet oxygen. The major drawback of this strategy is the weak light penetration in the tissues. To overcome this issue, recent studies proposed to generate visible light in situ with radioactive isotopes emitting charged particles able to produce Cerenkov radiation. In vitro and preclinical results are appealing, but the existence of a true, lethal phototherapeutic effect is still controversial. In this article, we have reviewed previous original works dealing with Cerenkov-induced PDT (CR-PDT). Moreover, we propose a simple analytical equation resolution to demonstrate that Cerenkov light can potentially generate a photo-therapeutic effect, although most of the Cerenkov photons are emitted in the UV-B and UV-C domains. We suggest that CR-PDT and direct UV-tissue interaction act synergistically to yield the therapeutic effect observed in the literature. Moreover, adding a nanoscintillator in the photosensitizer vicinity would increase the PDT efficacy, as it will convert Cerenkov UV photons to light absorbed by the photosensitizer.
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Sengar, Prakhar, Karelid Garcia-Tapia, Kanchan Chauhan, Akhil Jain, Karla Juarez-Moreno, Hugo A. Borbón-Nuñez, Hugo Tiznado, Oscar E. Contreras et Gustavo A. Hirata. « Dual-photosensitizer coupled nanoscintillator capable of producing type I and type II ROS for next generation photodynamic therapy ». Journal of Colloid and Interface Science 536 (février 2019) : 586–97. http://dx.doi.org/10.1016/j.jcis.2018.10.090.

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Bünzli, Jean-Claude Georges. « Lanthanide-doped nanoscintillators ». Light : Science & ; Applications 11, no 1 (29 septembre 2022). http://dx.doi.org/10.1038/s41377-022-00987-2.

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AbstractLanthanide-doped nanoscintillators are taking the lead in several important fields including radiation detection, biomedicine, both at the level of diagnosis and therapy, and information encoding.
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Crapanzano, Roberta, Irene Villa, Silvia Mostoni, Massimiliano D'Arienzo, Barbara Di Credico, Mauro Fasoli, Roberto Lorenzi, Roberto Scotti et Anna Vedda. « Photo- and Radio-luminescence of Porphyrin Functionalized ZnO/SiO2 Nanoparticles ». Physical Chemistry Chemical Physics, 2022. http://dx.doi.org/10.1039/d2cp00884j.

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The development of hybrid nanoscintillators is hunted for the implementation of the modern detection technologies, like in high energy physics, homeland security, radioactive gas sensing, and medical imaging, as well...
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Wang, Xiao, Wenjing Sun, Huifang Shi, Huili Ma, Guowei Niu, Yuxin Li, Jiahuan Zhi et al. « Organic phosphorescent nanoscintillator for low-dose X-ray-induced photodynamic therapy ». Nature Communications 13, no 1 (30 août 2022). http://dx.doi.org/10.1038/s41467-022-32054-0.

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AbstractX-ray-induced photodynamic therapy utilizes penetrating X-rays to activate reactive oxygen species in deep tissues for cancer treatment, which combines the advantages of photodynamic therapy and radiotherapy. Conventional therapy usually requires heavy-metal-containing inorganic scintillators and organic photosensitizers to generate singlet oxygen. Here, we report a more convenient strategy for X-ray-induced photodynamic therapy based on a class of organic phosphorescence nanoscintillators, that act in a dual capacity as scintillators and photosensitizers. The resulting low dose of 0.4 Gy and negligible adverse effects demonstrate the great potential for the treatment of deep tumours. These findings provide an optional route that leverages the optical properties of purely organic scintillators for deep-tissue photodynamic therapy. Furthermore, these organic nanoscintillators offer an opportunity to expand applications in the fields of biomaterials and nanobiotechnology.
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Lei, Lei, Yubin Wang, Andrey Kuzmin, Youjie Hua, Jingtao Zhao, Shiqing Xu et Paras N. Prasad. « Next generation lanthanide doped nanoscintillators and photon converters ». eLight 2, no 1 (19 septembre 2022). http://dx.doi.org/10.1186/s43593-022-00024-0.

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AbstractScintillators are of significance for the realization of indirect X-ray detection and X-ray excited optical luminescence (XEOL) imaging. However, commercial bulk scintillators not only require complex fabrication procedures, but also exhibit non-tunable XEOL wavelength and poor device processability. Moreover, thick crystals usually generate light scattering followed by evident signal crosstalk in a photodiode array. Lanthanide doped fluoride nanoscintillators (NSs) prepared with low-temperature wet-chemical method possess several advantages, such as low toxicity, cheap fabrication cost, convenient device processability and adjustable emission wavelengths from ultraviolet to visible and extending to second near infrared window. In addition, they exhibit X-ray excited long persistent luminescence (XEPL) making them suitable for broadening the scope of their applications. This review discusses and summarizes the XEOL and XEPL characteristics of lanthanide doped fluoride NSs. We discuss design strategies and nanostructures that allow manipulation of excitation dynamics in a core–shell geometry to simultaneously produce XEOL, XEPL, as well as photon upconversion and downshifting, enabling emission at multiple wavelengths with a varying time scale profile. The review ends with a discussion of the existing challenges for advancing this field, and presents our subjective insight into areas of further multidisciplinary opportunities.
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zhang, yue, Qun LI, Zekun JING, Yakun GUO, Binyuan XIA, Maobing SHUAI et Bin ZHAN. « Luminescent Properties of Caf2 : Eu2+ Nanoscintillators Synthesized Via Hydrothermal ». SSRN Electronic Journal, 2023. http://dx.doi.org/10.2139/ssrn.4362585.

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Chen, Dongxun, Yanjie Liang, Shihai Miao, Xihui Shan, Xiaojia Wang, Weili Wang, Yuhai Zhang, Jianqiang Bi et Dongqi Tang. « Self-surfactant room-temperature synthesis of morphology-controlled K0.3Bi0.7F2.4 nanoscintillators ». Journal of Materials Chemistry C, 2022. http://dx.doi.org/10.1039/d2tc03079a.

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Bismuth-based fluoride nanocrystalline materials are becoming an emerging class of host matrixes for luminescent lanthanide ions (Ln3+). However, the synthesis of morphology-controlled bismuth-based fluoride nanocrystals still remains a challenging work....
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Děcká, Kateřina, Fiammetta Pagano, Isabel Frank, Nicolaus Kratochwil, Eva Mihóková, Etiennette Auffray et Václav Čuba. « Timing performance of lead halide perovskite nanoscintillators embedded in a polystyrene matrix ». Journal of Materials Chemistry C, 2022. http://dx.doi.org/10.1039/d2tc02060b.

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Nanocrystals of CsPbBr3 have been incorporated in a polystyrene matrix with 1–10% weight filling factors. Samples were characterized with the main focus on their timing capability under soft X-ray irradiation for application as ultrafast scintillation detectors.
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Liu, Shikai, Wenting Li, Yangyang Zhang, Jialing Zhou, Yaqian Du, Shuming Dong, Boshi Tian et al. « Tailoring Silica-Based Nanoscintillators for Peroxynitrite-Potentiated Nitrosative Stress in Postoperative Radiotherapy of Colon Cancer ». Nano Letters, 22 juillet 2022. http://dx.doi.org/10.1021/acs.nanolett.2c02472.

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Carulli, Francesco, Francesca Cova, Luca Gironi, Francesco Meinardi, Anna Vedda et Sergio Brovelli. « Stokes Shift Engineered Mn:CdZnS/ZnS Nanocrystals as Reabsorption‐Free Nanoscintillators in High Loading Polymer Composites ». Advanced Optical Materials, 11 mai 2022, 2200419. http://dx.doi.org/10.1002/adom.202200419.

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Wang, Mingwei, Yangqi Meng, Yaqi Zhu, Jia Song, Jian Yang, Chunguang Liu, Hancheng Zhu, Duanting Yan, Changshan Xu et Yuxue Liu. « Afterglow-Suppressed Lu2O3:Eu3+ Nanoscintillators for High-Resolution and Dynamic Digital Radiographic Imaging ». Inorganic Chemistry, 12 juillet 2022. http://dx.doi.org/10.1021/acs.inorgchem.2c01417.

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Ma, Jinjing, Wenjuan Zhu, Lei Lei, Degang Deng, Youjie Hua, Yang Michael Yang, Shiqing Xu et Paras N. Prasad. « Highly Efficient NaGdF4:Ce/Tb Nanoscintillator with Reduced Afterglow and Light Scattering for High-Resolution X-ray Imaging ». ACS Applied Materials & ; Interfaces, 13 septembre 2021. http://dx.doi.org/10.1021/acsami.1c14503.

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Cheng, Yi, Lei Lei, Wenjuan Zhu, Yubin Wang, Hai Guo et Shiqing Xu. « Enhancing light yield of Tb3+-doped fluoride nanoscintillator with restricted positive hysteresis for low-dose high-resolution X-ray imaging ». Nano Research, 22 octobre 2022. http://dx.doi.org/10.1007/s12274-022-4998-7.

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