Article
Physics, Condensed Matter
Luiz H. A. R. Ferreira, Lauro J. Q. Maia
Summary: This study focused on the synthesis and characterization of the Y2Ba3B4O12 phase with different heat treatment conditions. It aimed to evaluate the potential biolo-gical applications of this phase as an optical nanothermometer in the near-infrared spectrum and the temperature range of 25-55 degrees C. The results confirmed the successful synthesis of Y2Ba3B4O12 nanoparticles co-doped with Nd3+ and Yb3+ at 1000 degrees C for 5 min. The structural and spectroscopic analyses demonstrated the crystalline nature of the produced phase and evaluated its optical properties.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Optics
Albenc Nexha, Maria Cinta Pujol, Joan Josep Carvajal, Francesc Diaz, Magdalena Aguilo
Summary: Cubic Ho3+ and Tm3+ doped Y2O3 colloidal nanotriangles with a size of ~43 nm were synthesized using thermal decomposition method. These nanocrystals can generate white light under high power laser excitation and exhibit temperature-dependent optical properties. They can be applied as luminescent nanothermometers over a wide range of temperatures and demonstrate a highly sensitive mechanism for temperature measurement.
JOURNAL OF LUMINESCENCE
(2022)
Article
Materials Science, Multidisciplinary
Yanzhou Ji, Long-Qing Chen
Summary: This paper introduces a phase-field model for predicting microstructure patterns of multiphase solids with fixed compositions and variable chemical compositions. The existing phase-field models are inaccurate in treating ordered stoichiometric compounds, and this paper proposes a new framework for more accurate predictions of microstructures.
Article
Engineering, Environmental
Xiaohui Meng, Zhenpeng Wang, Yan Qiao, Dong Qiu
Summary: A stoichiometric seeded growth strategy enables the massive production of mono disperse colloidal silica with excellent batch-to-batch reproducibility. The size of the colloidal silica can be precisely controlled by the precursor/seed ratios, and monodisperse colloidal silica can be obtained from polydisperse seed particles, reducing the cost.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Luana C. S. Nascimento, Mauricio L. Torem, Ellen C. Giese, Antonio G. Merma, Luiz C. Bertolino, Nathalia O. A. Anjos
Summary: Run-of-mine (ROM) palygorskite from Guadalupes in Piaui, Brazil, was found to have a maximum sorption capacity of 18 mg/g for Nd3+ ions. More than 99% of Nd was removed from the solution at pH 5. The Temkin model provided the best fit for the sorption data, indicating an electrostatic interaction between PAL and Nd3+ ions.
MINERALS ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
M. M. Arghavan, A. A. Sabouri-Dodaran, M. Sasani Ghamsari
Summary: In this study, neodymium-doped yttrium hydroxide nanobelts (Nd:Y(OH)(3)) were synthesized using a simple method. Various characterization techniques were used to determine the properties of the prepared colloidal sample. The structural characteristics were analyzed using XRD and HRTEM, showing that the average size of the hexagonal crystal was about 25 nm. The absorbance and emission spectra revealed that the light emission intensity of the colloidal sample was influenced by the concentration of Nd3+ ions. Excitation with wavelengths of 355 and 360 nm did not significantly alter the blue emission spectra, but excitation at 300 nm resulted in an increase in emission intensity with increasing concentration up to 0.05 g (sample 2).
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Multidisciplinary Sciences
Fan Yang, Xiang Wu, Han Cui, Zihao Ou, Shan Jiang, Sa Cai, Qi Zhou, Bryce G. Wong, Hans Huang, Guosong Hong
Summary: The study used a bioinspired demineralization (BID) strategy to synthesize stable colloidal solutions, which can be used for multi-color luminescent tagging applications in vivo.
Article
Nanoscience & Nanotechnology
Marcus Vinicius-Araujo, Navadeep Shrivastava, Ailton A. Sousa-Junior, Sebastiao A. Mendanha, Ricardo Costa De Santana, Andris F. Bakuzis
Summary: This study introduces a trimodal system that combines magnetic nanoparticle hyperthermia, photothermal therapy, and luminescent nanothermometry properties into a single nanoplatform, showing potential for multifunctionality. By optimizing zinc-manganese ferrite NPs for low-field magnetic hyperthermia, superior performance was achieved, as well as enhanced photothermal therapy through silica coating and Nd3+ doping.
ACS APPLIED NANO MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
K. Trejgis, Feng Tian, Jiang Li, A. Bednarkiewicz, L. Marciniak
Summary: The study found that the size of phosphors and surface quenching processes can affect the sensitivity of luminescent thermometers, leading to a reduction in usable temperature range.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Polymer Science
Jun Gao, Qiang-wei Zhan, Ziyao Tang, Yan Huang
Summary: This study demonstrates the transition from soluble to colloidal polyelectrolyte complex and the formation of large colloidal complexes through aggregation of small primary complexes. The sol-col transition occurs at a critical charge ratio and is affected by chain entanglement and the addition of salts.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Swadhin Garain, Bidhan Chandra Garain, Muthusamy Eswaramoorthy, Swapan K. Pati, Subi J. George
Summary: A high quantum yield solution state RTP has been achieved in water by employing an organic-inorganic supramolecular scaffolding strategy. Furthermore, the supramolecular hybrid phosphors have been used as a light-harvesting scaffold to achieve delayed fluorescence from acceptor dyes via efficient triplet to singlet Forster resonance energy transfer.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Joudi Maskoun, Negar Gheshlaghi, Furkan Isik, Savas Delikanli, Onur Erdem, Emine Yegan Erdem, Hilmi Volkan Demir
Summary: This study presents a ultralow-threshold microfluidic single-mode laser using CdSe/CdS@CdxZn1-xS core/crown@gradient-alloyed shell colloidal semiconductor quantum wells (CQWs) dispersed in toluene as the microfluidic gain medium, achieving in-solution lasing with record-low thresholds. The high-quality Fabry-Perot cavity formed by SiO2 protected Ag mirrors contributes to the low thresholds, along with the core/crown@gradient-alloyed shell CQWs having giant gain cross-section and slow Auger rates. This microfabricated CQW laser serves as a compact and inexpensive coherent light source for microfluidics and integrated optics in the visible spectral region.
ADVANCED MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Gisele Azimi, Maziar E. Sauber, Jiakai Zhang
Summary: This study provides a comprehensive analysis of the technoeconomics of supercritical fluid extraction technology for the recovery of rare earth elements. It demonstrates the economic viability of the process under certain conditions.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Materials Science, Multidisciplinary
Alexander M. Smirnov, Anastasia D. Golinskaya, Vladimir N. Mantsevich, Maria Kozlova, Kseniia V. Ezhova, Bedil M. Saidzhonov, Roman B. Vasiliev, Vladimir S. Dneprovskii
Summary: Experimental investigations were conducted on the transient absorption of colloidal heterostructured CdSe/CdS nanoplatelets under high-intensity nanosecond laser pulses, revealing a strong dependence on nanoplatelets concentration and pump intensities. Nonlinear transmission changes in nanoplatelets solutions were explained by various factors, and the identification of conditions for optical gain in colloidal solutions was a significant result.
RESULTS IN PHYSICS
(2022)
Article
Geochemistry & Geophysics
Youming Yang, Xiaolin Zhang, Kaizhong Li, Li Wang, Fei Niu, Donghui Liu, Yuning Meng
Summary: Rare earths dissolved in carbonate solutions exhibit a metastable state, which can be controlled by additional NaCl and destroyed rapidly by introducing CO2. Introduction of NaCl delays the precipitation of rare earth carbonate, while CO2 accelerates the precipitation process and destroys the metastable state, enabling rapid separation of rare earths without introducing other precipitants.
Article
Chemistry, Physical
Agnieszka Pasciak, Malgorzata Misiak, Karolina Trejgis, Karolina Elzbieciak-Piecka, Oleksii Bezkrovnyi, Lukasz Marciniak, Artur Bednarkiewicz
Summary: In this study, we systematically compared and quantitatively analyzed the photothermal conversion efficiency of materials doped with rare earth ions. We also investigated the influence of different matrix materials on the efficiency. The research findings suggest that neodymium ions exhibit the highest internal and external photothermal conversion efficiency, and NdVO4 shows promise as a host material for future applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
W. M. Piotrowski, M. Kardach, P. Sobierajska, A. Watras, J. M. Reeks, V. Kinzhybalo, L. Marciniak, R. J. Wiglusz
Summary: By increasing the molar ratio of (AsO4)3- to (VO4)3- in the host material, the usable temperature range of a luminescent thermometer based on Eu3+ ion emission can be expanded and its thermal performance can be optimized. This strategy is a step towards designing thermometers with adjustable thermometric performance.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Physics, Applied
Zuzanna Korczak, Magdalena Dudek, Martyna Majak, Malgorzata Misiak, Lukasz Marciniak, Marcin Szalkowski, Artur Bednarkiewicz
Summary: This research investigates the effect of temperature on sensitized photon avalanche (PA) emission in Yb3+ and Pr3+ co-doped NaYF4 nanoparticles. The results show significant variations in PA nonlinearity, gain, and threshold under temperature changes. Moreover, a new thermometric parameter, PA pump power threshold, with high relative sensitivities, is proposed.
LOW TEMPERATURE PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
K. Maciejewska, A. Pasciak, M. Szalkowski, M. Ptak, A. Bednarkiewicz, L. Marciniak
Summary: By carefully designing the composition and architecture of nanomaterials, modern functional nanomaterials can possess enhanced properties and multifunctional capabilities. This study presents YPO4:Cr3+ nanoparticles and evaluates their photothermal performance based on the concentration of Cr3+ ions. The results show that despite a low light-to-heat conversion efficiency of only 15%, CrPO4 exhibits a significantly higher temperature increase compared to NaNdF4 nanoparticles when optically excited, indicating its high application potential. An experiment involving dynamic photo-thermo-polymerization of MMA for 3D printing demonstrates the practicality of these photothermal agents.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Nanoscience & Nanotechnology
Malgorzata Misiak, Orest Pavlosiuk, Marcin Szalkowski, Agata Kotulska, Karolina Ledwa, Artur Bednarkiewicz
Summary: Materials capable of emitting UV radiation under NIR excitation are highly desirable for various applications. This study investigates the size, structure, and luminescence properties of tetragonal LiY(Gd)F-4 nanocrystals doped with different concentrations of Gd3+ ions. The results demonstrate that low concentrations of Gd3+ ions can modify the size and up-conversion luminescence, while excess doping leads to the appearance of foreign phases and a significant decrease in luminescence intensity. The intensity and kinetics of Gd3+ up-converted UV emission are also analyzed. These findings provide a foundation for the development of optimized materials and applications based on LiYF4 nanocrystals.
Article
Chemistry, Multidisciplinary
W. M. Piotrowski, K. Maciejewska, L. Marciniak
Summary: Codoping with Cr3+ ions enhances the luminescence sensitivity of Ln3+ and the intensity of Ln3+-based luminescent thermometers. However, achieving predictable performance in such thermometers requires understanding the correlation between the host material and thermometric parameters. This study demonstrates the dependence of relative sensitivity enhancement and thermal quenching temperature on the strength of the crystal field interacting with Cr3+ ions. The research presented offers versatility in developing optical temperature sensors with predefined parameters.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Artur Bednarkiewicz, Marcin Szalkowski, Martyna Majak, Zuzanna Korczak, Malgorzata Misiak, Sebastian Mackowski
Summary: The time-domain all-optical information processing capabilities of photon-avalanching nanoparticles at room temperature have been discovered. These nanoparticles exhibit properties similar to neuronal synapses and can perform feature extraction, pattern recognition, and data processing without the need for machine-learning algorithms. The high nonlinearity and residual energy storage of these nanoparticles enable all-optical data processing and storage on photonic chips.
ADVANCED MATERIALS
(2023)
Article
Construction & Building Technology
T. Jesiak, M. Hasiak, A. Laszcz, J. Checmanowski, Y. Gerasymchuk, P. Stachowiak, W. Strek, D. Hreniak
Summary: This study explores the combination of thermal insulation properties of porous oxide material and the exceptional thermal conductivity properties of graphene flakes. Blocks of porous glass foam matrix were prepared using the sol-gel method and heat treatment at 450 degrees C. The microstructure of the samples was analyzed using scanning electron microscopy, Raman spectroscopy, and X-ray diffraction. The thermal and mechanical properties of the samples were discussed in relation to their potential applications as novel thermo-smart composite materials.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
K. Wiwatowski, K. Sulowska, R. Houssaini, A. Pilch-Wrobel, A. Bednarkiewicz, A. Hartschuh, S. Mackowski, D. Piatkowski
Summary: Luminescence thermometry is a powerful technique that allows for non-invasive temperature monitoring through light. This study presents the use of isolated single up-converting NaYF4:Er3+/Yb3+ nanocrystals as functional temperature indicators for monitoring the temperature of a single silver nanowire. The results demonstrate the precise determination of temperature distribution in the nanowire's surroundings using individual nanocrystals, which is an important step for nanoscale luminescence thermometry applications.
Article
Materials Science, Multidisciplinary
M. Pieprz, M. Runowski, P. Wozny, J. Xue, L. Marciniak
Summary: Luminescent manometry allows remote pressure readout with high resolution. In this study, a new approach utilizing the luminescence kinetics of Mn4+ ions in SrGdAlO4 is presented for remote pressure sensing. The unique feature of this method is the pressure-induced prolongation of the lifetime of Mn4+ ions, resulting from changes in the Mn4+-O2- bond covalency. By taking advantage of this effect, a luminescent manometer with a maximum relative sensitivity of 7.85%/GPa and sensitivities above 5%/GPa in the pressure range of 1-7.6 GPa was developed. Furthermore, the measurement was temperature invariant in the range of 260-365 K, with a manometric factor of 134.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
W. M. Piotrowski, R. Marin, M. Szymczak, E. Martin Rodriguez, D. H. Ortgies, P. Rodriguez-Sevilla, P. Bolek, M. D. Dramicanin, D. Jaque, L. Marciniak
Summary: Near-infrared (NIR) luminescence thermometry is a reliable method for remote thermal sensing and imaging. Lanthanide (Ln(3+))-based nanophosphors are commonly used as NIR nanothermometers, but the combination of Ln(3+) with transition metal (TM) ions can enhance the sensitivity of the thermometric approach. However, there are few examples of luminescence nanothermometers combining both TM and Ln(3+), leaving room for further exploration of these systems.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Inorganic & Nuclear
K. Elzbieciak-Piecka, W. M. Piotrowski, M. D. Dramicanin, L. Marciniak
Summary: This study introduces a new thermal history phosphor based on the luminescence of Eu3+ ions in LaVO4, which meets the requirements of high sensitivity and consistent readout for reliable thermal history determination with high temperature resolution. It is demonstrated that raising the annealing temperature induces a structural phase transition from a low-temperature tetragonal phase to a high-temperature single-stranded phase. The change in the local point symmetry of the crystallographic site occupied by Eu3+ ions results in a significant decrease in the emission intensity ratio, enabling the development of a ratiometric thermal history phosphor with a relative sensitivity of 0.38% ?(-1) at 800 ℃. Its potential for thermal history readout has been proven in a proof-of-concept experiment.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Malgorzata Sojka, Wojciech Piotrowski, Lukasz Marciniak, Eugeniusz Zych
Summary: The employment of phosphors in luminescence thermometry is a pivotal development in the field. Developing an optical thermometer capable of functioning across an extensive temperature range with reasonable thermal sensitivity is a paramount predicament. This study explores the combination of two dopants, Pr3+ and Tb3+, to enhance the temperature readout range and achieve high relative thermal sensitivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Multidisciplinary
Magdalena Dudek, Zuzanna Korczak, Katarzyna Prorok, Oleksii Bezkrovnyi, Lining Sun, Marcin Szalkowski, Artur Bednarkiewicz
Summary: In this study, the photon avalanche phenomenon was successfully observed in beta-NaYF4 colloidal nanocrystals co-doped with Pr3+ and Yb3+ ions. The impact of Pr3+ ion concentration and pump power on the behavior of photon avalanche was investigated, and simulations were performed to understand the underlying mechanisms.
Article
Materials Science, Multidisciplinary
Wojciech M. Piotrowski, Maja Szymczak, Emma Martin Rodriguez, Riccardo Marin, Marta Henklewska, Blazej Pozniak, Miroslav Dramicanin, Lukasz Marciniak
Summary: The increasing popularity of luminescent nanothermometry in recent years is due to its potential application in biomedicine. This study introduces a biocompatible bimodal luminescent thermometer that operates in ratiometric and luminescence lifetime modes, offering high sensitivity and low cytotoxicity, making it suitable for bioapplications.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Optics
R. B. Adamov, G. A. Melentev, I. V. Sedova, S. V. Sorokin, G. V. Klimko, I. S. Makhov, D. A. Firsov, V. A. Shalygin
Summary: This study investigates the THz luminescence in doped nanostructures with GaAs/AlGaAs quantum wells under interband optical pumping. The results show that the spatial separation of donors and acceptors can greatly enhance the integrated intensity of THz emission.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yanru Li, Lei Zhong, Sha Jiang, Yutong Wang, Binyao Huang, Guotao Xiang, Li Li, Yongjie Wang, Chuan Jing, Xianju Zhou
Summary: In this study, a ratiometric luminescent thermometry based on dual-emission centers was developed using co-doped CaNb2O6 phosphors with Bi3+ and Pr3+. The obtained samples exhibited good thermosensitive and thermochromic characteristics, with a maximum absolute sensitivity of 0.09 K-1 @ 528 K and a maximum relative sensitivity of 2.17 % K-1 @ 453 K.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yujing Gong, Yeqing Wang, Zhiyuan Wang, Yijian Sun, Yi Yu
Summary: Single crystals of Dy3+ single-doped and Dy3+/Tb3+ co-doped CaYAlO4 were grown and analyzed. The incorporation of Tb3+ resulted in increased absorption and emission cross sections. The fluorescence lifetimes and branching ratios of the yellow emission were affected by the presence of Tb3+. The deactivation effect of Tb3+ ions and energy transfer mechanism were also discussed.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Lu Chen, Zhuangzhuang Ma, Jian Chen, Wang Guo
Summary: This study focuses on enhancing the thermal robustness of phosphor converter materials by preparing composite ceramics of YAG:Ce combined with high-thermal-conductivity MgO. The composite ceramics showed high density and thermal conductivity at the optimum temperature of 1400℃. Stable laser-driven white light was obtained under blue laser excitation.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yuwei Wu, Chunhui Niu, Lei Wang, Mingqing Yang, Shiyu Zhang
Summary: Er3+-doped germanate-tellurite glasses were prepared and their structure, luminescent, and temperature-sensing properties were studied. The glass exhibited large values of O2 and O6 and its luminescence intensity varied with temperature.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Kensei Ichiba, Takumi Kato, Kenichi Watanabe, Yuma Takebuchi, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
Summary: In this study, Eu-doped YVO4 single crystals with different concentrations were fabricated to evaluate their photoluminescence and scintillation properties. The results showed that the samples doped with Eu exhibited emission peaks due to 4f-4f transitions in PL and scintillation spectra. Based on the pulse height spectra, the light yield of the Eu-doped samples increased with increasing Eu concentration, while the afterglow level decreased.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Daiwen Xiao, Hei-Yui Kai, Anjun Huang, Menglin Song, Ka-Leung Wong, Peter A. Tanner
Summary: The emission spectra of Cs2NaEuCl6 nanoparticles synthesized by the hot injection method are explained. The dispersion of the nanoparticles in alkane solvents in the experiment allows the determination of the magnetic dipole radiative rate for the D-5(0) -F-7(1) channel in vacuum, which is in agreement with the calculated value.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Italia V. Barbosa, Geraldine Dantelle, Alain Ibanez, Lauro J. Q. Maia
Summary: The thermal response and luminescence properties of different oxide matrices were evaluated to design more accurate thermal probes. It was found that thermal probes emitting in BW-II provide better thermal sensing with higher signal-to-noise ratio. Additionally, doping Nd3+ in Y2O3 matrix maximizes luminescence intensity, making it a promising matrix for thermal sensing.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Xin Li, Yu Zhang, Hongrui Ren, Lunlong Xie, Yinsheng Di, Mengqing Han, Zhaohui Bai, Quansheng Liu, Liangliang Zhang, Jiahua Zhang
Summary: This study successfully prepared phosphor samples based on Ca3-xLuxSc2-xMgxSi3O12:Ce3+ and investigated their luminescence properties. With the increase in Lu-Mg concentration, the peak of the sample redshifted, but the thermal stability gradually decreased. The LD devices made from CLSMS:Ce3+ fluorescent materials showed a decrease in cyan-green light and an increase in red light as the Lu-Mg concentration increased.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Tim Pier, Julia Hopster, Thomas Juestel
Summary: This study investigates and reports on several samples of cerium-activated gallium-based garnet phosphors. The optimal activator concentration was found to be 1 atom-%. The size of non-emitting lanthanide ions and the molar concentration of cerium strongly influenced the crystal field splitting, which in turn shaped the excitation and emission wavelengths.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Guijie Zhao, Wei Shi, Xin Xin, Fengcai Ma, Yongqing Li
Summary: This study reveals for the first time the proton transfer pathways and changes in the photophysical properties of P-TNS with three intramolecular hydrogen bonds. The reaction mechanism and driving force for the proton transfer process are explained through analysis of potential energy surface, frontier molecular orbitals, and hydrogen bond parameters, among others.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Li He, Jinshu Huang, Zhengce An, Haozhang Huang, Yu Zhao, Kexin Zhong, Bo Zhou
Summary: In this study, we designed a NaYF4:Yb3+/Tm3+@NaYF4 core-shell nanostructure to achieve thermochromic upconversion and high thermal sensitivity. We found that the blue upconversion emission of Tm3+ decreased while the deep-red emission increased with elevating temperature. The sample also showed a gradual emission color change from blue to purplish-red, and the optimal relative sensitivity reached 2.79% K-1.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Rupesh A. Talewar
Summary: A series of Li2TiO3 phosphors doped with Mn4+ and codoped with Mn4+ and Er3+ were synthesized, which demonstrated the ability of Mn4+ ions to absorb UV-Vis photons and subsequently transfer energy to Er3+ ions, resulting in the emission of near-infrared light. These materials have the potential to enhance the absorption efficiency of Er3+-based luminescent materials.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Xingyuan Ma, Jianfeng Li
Summary: Carbon quantum dots (CQDs) with tunable photoluminescence properties have been synthesized using suitable carbon and dopant sources in an aqueous system. The synthesized CQDs exhibited blue, green, yellow, and red emissions, and solid-state luminescence was achieved through the preparation of solid-state fluorescent films and phosphors. This study provides important technical support for the future development of CQDs synthesis.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
De Bin Fu, Yang Bing Xu, Yu Teng Zhang, Shan Ting Liu, Xiao Fei Yang, Sheng Hua Liu
Summary: A pair of new chiral molecules, (S)-4 and (R)-4, have been designed and synthesized by introducing valine-containing groups at symmetrical positions on the periphery of an indolo[3,2-b]carbazole unit. These molecules exhibit aggregation-induced circular dichroism (AICD) properties in DMF/water mixtures, and in a mixture with 99% water fraction, they show strong, mirror-image, blue circularly polarized luminescence (CPL) signals.
JOURNAL OF LUMINESCENCE
(2024)
