Article
Chemistry, Multidisciplinary
Mark J. J. Mangnus, Vincent R. M. Benning, Bettina Baumgartner, P. Tim Prins, Thomas P. van Swieten, Ayla J. H. Dekker, Alfons van Blaaderen, Bert M. Weckhuysen, Andries Meijerink, Freddy T. Rabouw
Summary: This study investigates the influence of solvent and gas environments on the photoluminescence (PL) properties of lanthanide-doped nanocrystals, and explains the changes in PL spectrum and excited-state lifetimes using energy transfer mediated by molecular vibrations. EVET-mediated quenching holds promise for probing the local chemical environment of nanocrystals dispersed in a liquid or exposed to gaseous molecules.
Article
Chemistry, Multidisciplinary
Mark J. J. Mangnus, Vincent R. M. Benning, Bettina Baumgartner, P. Tim Prins, Thomas P. van Swieten, Ayla J. H. Dekker, Alfons van Blaaderen, Bert M. Weckhuysen, Andries Meijerink, Freddy T. Rabouw
Summary: The photoluminescence of lanthanide-doped nanocrystals can be quenched by energy transfer to nearby molecular vibrations, which is often undesired but can provide information about molecular vibrations in the local environment. This study investigates the influence of solvent and gas environments on the photoluminescence properties of NaYF4:Er3+,Yb3+ upconversion nanocrystals and relates the changes to quenching by electronic-to-vibrational energy transfer. The results suggest that EVET-mediated quenching can be used as a mechanism to probe the local chemical environment in liquid and gas-phase systems.
Article
Chemistry, Multidisciplinary
Jun Du, Jinliang Liu, Ying Chen, Yuefeng Zhao, Yuhao Li, Yuqing Miao
Summary: A fast and facile preparation strategy for bismuth-based upconversion nanomaterials has been reported, which improves the crystallinity and upconversion luminescence intensity. The temperature measurement range has also been extended by optimizing the doping ratio and adjusting the synthetic solvent strategy. This method provides a feasible strategy for the construction of novel fluorescent temperature probes.
Article
Chemistry, Multidisciplinary
Yi Cheng, Yubin Wang, Denghao Li, Juan Bao, Degang Deng, Hai Guo, Lei Lei
Summary: Lanthanide doped Gd2Ti2O7 crystals prepared by a modified sol-gel method show enhanced luminescence intensity at higher temperatures, resulting in high relative temperature sensitivity and potential applications in temperature sensing and anti-counterfeiting.
CHEMICAL COMMUNICATIONS
(2022)
Review
Materials Science, Multidisciplinary
Lucia Labrador-Paez, Uliana Kostiv, Jerker Widengren, Haichun Liu
Summary: This review summarizes the challenges and promising strategies for optimizing the adaptation of lanthanide-doped luminescent nanoparticles in aqueous environments for nanomedicine. It discusses the de-excitation paths caused by water molecule vibrations and their prevention, as well as the latest developments in nanoparticle design for increased monitoring depth and the effects of water temperature dependence.
ADVANCED OPTICAL MATERIALS
(2023)
Review
Chemistry, Analytical
Mingkai Wang, Chuanyu Hu, Qianqian Su
Summary: This review presents recent advances in the applications and lifetime regulation strategies of lanthanide-doped nanoparticles in bioimaging and biodetection. By modulating the core-shell structure, concentration of sensitizer and emitter, and energy transfer channels, the lifetime of nanoparticles can be regulated and applied in various biosensing applications, such as ion and molecule detection, DNA and protease detection.
Article
Materials Science, Multidisciplinary
Kui Xu, Chen Lin, Ming-Feng Qin, Ze Yuan, Ye Tao, Song-Song Bao, Runfeng Chen, Xiaoji Xie, Li-Min Zheng
Summary: Amplification of near-infrared luminescence of lanthanide-doped nanoparticles can be achieved by a new type of iridium-based phosphonate complex as an antenna. The complex has a quasi-spherical structure and pendent phosphonic groups that resist aggregation-caused quenching and firmly anchor on nanoparticles. The complex can stably amplify the luminescence of lanthanide-doped nanoparticles up to 130 times, potentially due to short-range energy transfer from the complex to lanthanide ions. These findings provide a new fundamental approach to amplify the luminescence of lanthanide-doped nanoparticles and advance their applications.
ACS MATERIALS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Kui Xu, Chen Lin, Ming-Feng Qin, Ze Yuan, Ye Tao, Song-Song Bao, Runfeng Chen, Xiaoji Xie, Li-Min Zheng
Summary: Amplifying the photoluminescence of lanthanide-doped nanoparticles is important for practical applications. A new iridium-based phosphonate complex is discovered as an ideal antenna material to amplify the near-infrared luminescence of lanthanide-doped nanoparticles. The complex has a quasi-spherical structure and pendent phosphonic groups, which can resist aggregation-caused quenching and firmly anchor on nanoparticles. This complex can stably amplify the luminescence of lanthanide-doped nanoparticles up to 130 times by short-range energy transfer.
ACS MATERIALS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
P. K. Upadhyay, Neerav Sharma, Shashank Sharma, Ravi Sharma
Summary: This paper presents the PL and TL studies of undoped and Eu-doped ZnO nanophosphors, characterized by XRD and SEM. Eu-doped samples showed an additional XRD peak attributed to Europium oxide, with sizes ranging from 55 to 80 nm. The TL intensity increased linearly with gamma dose, suggesting potential for dosimetry applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Chang Zhou, Datao Tu, Siyuan Han, Peng Zhang, Luping Wang, Shaohua Yu, Jin Xu, Renfu Li, Xueyuan Chen
Summary: The article introduces a new class of UC nanocrystals based on Cs2NaYF6:Yb/Tm nanoplatelets, which exhibit efficient multiphoton UC emissions without the need for complicated core/multishell structures. The study demonstrates that Cs2NaYF6 has a unique structure that facilitates energy migration of Ln(3+) dopants, resulting in intense red and green UC emissions.
Article
Nanoscience & Nanotechnology
Xiaohe Wei, Guodong Zhao, Pengfei Feng, Yao Kou, Yu Tang
Summary: This study demonstrates a simplified growth strategy of europium/1,3-benzenedicarboxylic acid (1,3-BDC) MOF on NaYF4:Ce/Tb@NaYF4 nanoparticles through a one-step reaction. By grafting carboxylic acid groups on the surface of nanoparticles, the growth of Eu-MOF is facilitated, resulting in NaYF4:Ce/Tb@NaYF4@Eu-MOF@HPBA nanocomposites. The luminescence lifetime of Tb3+ and Eu3+ can be effectively tuned, providing insights into nanoparticle@MOF hybrid structures for time-resolved anticounterfeiting applications.
ACS APPLIED NANO MATERIALS
(2022)
Article
Engineering, Environmental
Haisheng Chen, Wenwen Chen, Jiaying Shen, Xiaona Du, Tianhong Zhou, Zhengang Dong, Taiyu Bian, Jiaxing Guo, Yiyang Wen, Yuanlin Liang, Zhenping Wu, Yang Zhang
Summary: This study develops smart luminescent materials with tunable characteristics, offering a new pathway for multifunctional high-end applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Carolina Picasso, Yolanda Salinas, Oliver Brueggemann, Markus Clark Scharber, Niyazi Serdar Sariciftci, Olavo D. F. Cardozo, Eriverton S. Rodrigues, Marcelo S. Silva, Andreas Stingl, Patricia M. A. Farias
Summary: Strategies for the production and use of nanomaterials are advancing towards safety and sustainability. The demand for high-performance nanomaterials, such as Zinc oxide (ZnO), is increasing due to its environmental compatibility and tunable properties. This study successfully produced both pristine and doped ZnO nanoparticles in powder form using whey as a chelating agent.
Article
Chemistry, Multidisciplinary
Renfu Li, Xiaodie Fang, Jilou Ren, Baojun Chen, Xiaoyun Yuan, Xuechun Pan, Peng Zhang, Lantian Zhang, Datao Tu, Zhenlan Fang, Xueyuan Chen, Qiang Ju
Summary: The systematic investigation on the effect of surface-capping OA on the optical properties of lanthanide-doped nanocrystals reveals a significant influence on emission intensity and radiative transition in solid state, while a distinct variation is observed in colloidal solution.
Article
Chemistry, Physical
Xian Qin, Albano N. Carneiro Neto, Ricardo L. Longo, Yiming Wu, Oscar L. Malta, Xiaogang Liu
Summary: This paper highlights the recent advances in modulation of upconversion emission by coupling upconversion nanoparticles with well-defined plasmonic nanostructures, emphasizing the importance of fundamental understanding in this area.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Jiejun Ren, Andries Meijerink, Xiaopeng Zhou, Jiapeng Wu, Gangyi Zhang, Yuhua Wang
Summary: In this work, a novel encapsulation strategy was developed to enhance the light conversion efficiency and stability of all-inorganic perovskite quantum dots (PQDs). The strategy involved the in situ growth of CsPbX3 PQDs in mesoporous cerium-based metal organic frameworks (Ce-MOFs) and further silane hydrolysis-encapsulation with SiO2. The simulation results showed that the Ce-MOFs had a waveguide effect on the incident PQD light, increasing the overall light conversion efficiency. The Ce-MOF@SiO2 protective shell effectively improved the stability of the PQDs by blocking them from the harmful external environment. The obtained white-light-emitting diode showed an ultrahigh luminous efficiency of 87.8 lm/W, demonstrating the great potential of PQDs in optoelectronic applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Bastiaan B. Salzmann, Jur de Wit, Chen Li, Daniel Arenas-Esteban, Sara Bals, Andries Meijerink, Daniel Vanmaekelbergh
Summary: This study prepared two-dimensional CdSe-PbSe heterostructures and PbSe NPLs through Pb2+-for-Cd2+ cation exchange and characterized the intermediary NCs with advanced microscopy and spectroscopy techniques. The growth of PbSe domains in CdSe NPLs occurs through the replacement of zinc blende CdSe lattice with rock salt PbSe phase while preserving the anion sublattice. Temperature-dependent emission measurements reveal size-dependent change of band gap energy and the influence of the anisotropic shape.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Johanna C. van der Bok, P. Tim Prins, Federico Montanarella, D. Nicolette Maaskant, Floor A. Brzesowsky, Maaike M. van der Sluijs, Bastiaan B. Salzmann, Freddy T. Rabouw, Andrei Petukhov, Celso De Mello Donega, Daniel Vanmaekelbergh, Andries Meijerink
Summary: Researchers found through in situ studies that in the early stage of the CdSe nanoplatelet reaction, both isotropic nanocrystals and mini-nanoplatelets form in the absence of short-chain ligands, but most precursors are consumed in isotropic growth. The addition of acetate induces a dramatic shift towards nearly exclusive 2D growth of already existing mini-nanoplatelets. Therefore, mature nanoplatelets only grow through a subtle interplay between myristate and acetate, with the latter catalyzing fast lateral growth of the side facets of the mini-nanoplatelets.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Arnoldus J. J. van Bunningen, Atul D. D. Sontakke, Ruben van der Vliet, Vincent G. G. Spit, Andries Meijerink
Summary: Narrower band red and green emission in phosphor-converted white light-emitting diodes can be achieved by using Mn2+ as a luminescent ion. The luminescence quenching temperature of Mn2+ is shown to vary greatly depending on the host material, with a positive correlation with the bandgap of the host. The quenching mechanism is found to be thermally activated photoionization, and a wide-bandgap host material is required for temperature-stable Mn2+ luminescence in high power LEDs.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
P. Tim Prins, Johanna C. van Der Bok, Thomas P. van Swieten, Stijn O. M. Hinterding, Andy J. Smith, Andrei V. Petukhov, Andries Meijerink, Freddy T. Rabouw
Summary: The synthesis of beta-NaYF4 nanocrystals from alpha-NaYF4 precursor particles was investigated using in situ small-angle and wide-angle X-ray scattering and ex situ electron microscopy. It was observed that the particle size distribution evolved from unimodal to bimodal, and eventually back to unimodal, with the final distribution being narrower than the initial distribution. The splitting of the size distribution was attributed to variations in the reactivity of the precursor particles.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Physics, Applied
Aleksandar Ciric, Thomas van Swieten, Jovana Perisa, Andries Meijerink, Miroslav D. D. Dramicanin
Summary: Luminescence thermometry is a versatile remote temperature sensing technique. This study introduces a novel measurement technique, LIR2, which combines the temperature sensitivity of ground- and excited-state populations. By using Y3Al5O12:Er3+,Yb3+ nanoparticles, the LIR2 method shows significant increase in sensitivity and measurement precision comparing to the conventional LIR method.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Jintao Kong, Andries Meijerink
Summary: Based on simple optical spectroscopy, this study identifies the reversible charge transfer mechanism in the benchmark persistent phosphors CaAl2O4:Eu2+,Nd3+. The forward charge transfer from Eu2+ to Nd3+ and the backward charge transfer from Nd2+ to Eu3+ are confirmed. The percentages of Eu2+ and Nd3+ involved in the charge transfer exceed previous estimates in other persistent phosphors, and this strategy also offers additional advantages of site selectivity in identifying different contributions of Nd3+ sites. These findings highlight the importance of reversible charge transfer in persistent phosphors and contribute to a better understanding of the persistent luminescence mechanism.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jur W. de Wit, Thomas P. van Swieten, Marie Anne van de Haar, Andries Meijerink, Freddy T. Rabouw
Summary: Mn4+-doped fluorides are commonly used phosphors for warm-white lighting by converting blue light from LEDs into red light. However, they suffer from droop, i.e., decreasing performance at higher power, which limits their application in high-power scenarios. This study provides a comprehensive explanation of droop in Mn4+-doped K2TiF6 by considering all previously proposed mechanisms. By combining experimental and modeling approaches, the contributions of absorption bleach, thermal quenching, and Auger quenching at different excitation densities are quantified. This work contributes to a better understanding of the limitations of these materials and may inspire strategies to enhance their efficiency in high-power applications.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Freia Ruegenberg, Amador Garcia-Fuente, Markus Seibald, Dominik Baumann, Gregor Hoerder, Tim Fiedler, Werner Urland, Hubert Huppertz, Andries Meijerink, Markus Suta
Summary: Red-emitting narrow-band phosphors are crucial for the next generation of high-efficiency and optimized correlated color temperature white-light phosphor-converted light-emitting diodes. The crystalline structure of SALON:Eu2+ has been studied using X-ray diffraction, low-temperature luminescence spectroscopy, and ligand field theory to understand the local coordination symmetry and ligand ratio. The mutual energy transfer between Eu2+ centers in SALON:Eu2+ has been characterized using time-resolved luminescence.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Thimo S. Jacobs, Thomas P. van Swieten, Sander J. W. Vonk, Isa P. Bosman, Angela E. M. Melcherts, Bas C. Janssen, Joris C. L. Janssens, Matteo Monai, Andries Meijerink, Freddy T. Rabouw, Ward van der Stam, Bert M. Weckhuysen
Summary: This study investigates the local temperature variations in carbon dioxide methanation over a TiO2-supported Ni catalyst and links them to catalytic performance. Luminescence thermometry is used to measure the temperature-dependent emission and extract local temperatures. The findings highlight the importance of understanding and controlling temperature variations for optimizing catalyst performance.
Review
Chemistry, Physical
Joanna Dehnel, Adi Harchol, Yahel Barak, Itay Meir, Faris Horani, Arthur Shapiro, Rotem Strassberg, Celso de Mello Donega, Hilmi Volkan Demir, Daniel R. Gamelin, Kusha Sharma, Efrat Lifshitz
Summary: Incorporating magnetic ions into semiconductor nanocrystals is a promising research field for manipulating spin-related properties. Various host materials and magnetic ions have been studied, and the impact of nanostructure engineering and ion selection in carrier-magnetic ion interactions is emphasized. The use of optically detected magnetic resonance spectroscopy provides valuable insights into the spin dynamics and physical parameters of the carrier-magnetic ion interactions.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Arnoldus J. J. van Bunningen, Simon Tobias Keizer, Andries Meijerink
Summary: Broad band NIR emission has been observed in concentrated Mn2+ phosphors, which is attributed to the presence of NIR emitting trap centers, possibly Mn3+. Exchange coupling between Mn2+ neighbors cannot explain the observed redshifts, as the magnitude is much larger than expected. Temperature and concentration dependent studies show that energy migration over the Mn2+ sublattice plays a key role in the NIR emission.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Mark J. J. Mangnus, Vincent R. M. Benning, Bettina Baumgartner, P. Tim Prins, Thomas P. van Swieten, Ayla J. H. Dekker, Alfons van Blaaderen, Bert M. Weckhuysen, Andries Meijerink, Freddy T. Rabouw
Summary: This study investigates the influence of solvent and gas environments on the photoluminescence (PL) properties of lanthanide-doped nanocrystals, and explains the changes in PL spectrum and excited-state lifetimes using energy transfer mediated by molecular vibrations. EVET-mediated quenching holds promise for probing the local chemical environment of nanocrystals dispersed in a liquid or exposed to gaseous molecules.
Article
Chemistry, Multidisciplinary
Mark J. J. Mangnus, Vincent R. M. Benning, Bettina Baumgartner, P. Tim Prins, Thomas P. van Swieten, Ayla J. H. Dekker, Alfons van Blaaderen, Bert M. Weckhuysen, Andries Meijerink, Freddy T. Rabouw
Summary: The photoluminescence of lanthanide-doped nanocrystals can be quenched by energy transfer to nearby molecular vibrations, which is often undesired but can provide information about molecular vibrations in the local environment. This study investigates the influence of solvent and gas environments on the photoluminescence properties of NaYF4:Er3+,Yb3+ upconversion nanocrystals and relates the changes to quenching by electronic-to-vibrational energy transfer. The results suggest that EVET-mediated quenching can be used as a mechanism to probe the local chemical environment in liquid and gas-phase systems.
Article
Chemistry, Physical
Serena Busatto, Celso de Mello Donega
Summary: Research on magic-size colloidal nanostructures is still in its infancy, and many fundamental questions remain unanswered. The formation mechanisms and enhanced stability of these structures are complex and not yet understood. Further experimental investigations are needed to unravel these mysteries.