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Colloidal(Gd0.98Nd0.02)2O3 nanothermometers operating in a cell culture medium within the first and second biological windows

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Journal of Rare Earths 2020年第5期38卷 483-491页

作者： M.L.Debasu H.Oliveira J.Rocha L.D.Carlos Department of Physics CICECO-Aveiro Institute of MaterilsUniversidade de Aveiro3810-193AveiroPortugal Department of Chemistry CICECO-Aveiro Institute of MaterialsUniversidade de Aveiro3810-193AveiroPortugal Department of Biology CESAMLaboratory of Biotechnology and CytomicsUniversidade de Aveiro3810-193AveiroPortugal

Non-contact,self-referenced and near-infrared luminescent nanothermometers have been recognized as emerging tools in the fields of nanomedicine and nanotechnology due to their great capability of precise temperature readout at the nanoscale and real-time deep-tissue ***,the development of multifunctional and biocompatible luminescent nanothermometers operating within the optically transparent biological windows with high thermal sensitivity(>2.0%/K)remains ***,we present(Gd0.98Nd0.02)2O3 nanothermometers operated effectively within the first and second biological windows upon continuous-wave laser diode excitation at 808 *** thermometric parameters are defined by the relative changes in the emission intensities originating from the two Stark components of the 4 F3/2 level(R2 and R1)to the 4 I9/2(900-1000 nm),4 I11/2(1035-1155 nm)and 4 I13/2(1300-1450 nm)*** thermo metric parameters are evaluated for colloidal samples in a cell culture medium and powder samples,and the highest thermal sensitivity(2.18%/K at 298 K)is attained for the former in the first biological window(both the excitation and emission in the 800-965 nm range).The repeatability and temperature uncertainty are 99%and 1.2 K,*** nanothermometers are biocompatible with human MNT-1 melanoma and HaCaT cells for 24 h of exposure and nanoparticle concentration up to 0.400 mg/mL,showing their potential for applications in nanomedicine,e.g.,intracellular imaging and temperature mapping.

关键词： Gd2O3 Nd3^+-doped nanoparticles luminescent nanothermometry Thermal sensitivity Cytotoxicity of nanoparticles Rare earths

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Lanthanide-based ratiometric luminescence nanothermometry

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Nano Research 2023年第2期16卷 2949-2967页

作者： Mochen Jia Xu Chen Ranran Sun Di Wu Xinjian Li Zhifeng Shi Guanying Chen Chongxin Shan Key Laboratory of Materials Physics of Ministry of Education School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450052China MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering&Key Laboratory of Micro-systems and Micro-structuresMinistry of EducationHarbin Institute of TechnologyHarbin 150001China

luminescent nanothermometry can precisely and remotely measure the internal temperature of objects at nanoscale precision,which,therefore,has been placed at the forefront of scientific *** particular,due to the high photochemical stability,low toxicity,rich working mechanisms,and superior thermometric performance,lanthanide-based ratiometric luminesencent thermometers are finding prevalent uses in integrated electronics and optoelectronics,property analysis of in-situ tracking,biomedical diagnosis and therapy,and wearable e-health *** recent progresses,it remains debate in terms of the underlying temperature-sensing mechanisms,the quantitative characterization of performance,and the reliability of temperature *** this review,we show the origin of thermal response luminescence,rationalize the ratiometric scheme or thermometric mechanisms,delve into the problems in the characterization of thermometric performance,discuss the universal rules for the quantitative comparison,and showcase the cutting-edge design and emerging applications of lanthanide-based ratiometric ***,we cast a look at the challenges and emerging opportunities for further advances in this field.

关键词： luminescent nanothermometry lanthanide ions ratiometric thermometers thermal imaging

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