Article
Materials Science, Ceramics
Xiaoqi Zhao, Yami Ling, Yuanzhao Gou
Summary: Particle size plays a crucial role in up-conversion luminescence tuning and application research. In this study, CeO2:Yb3+/Er3+ nanospheres were synthesized via coprecipitation, and their up-conversion emissions were investigated. The results showed that the nanosphere size decreased as the Yb3+ doping concentration increased, leading to an increase in the red-green emission intensity ratio. This phenomenon might be attributed to the strengthened nonradiative relaxation process and the enhanced energy back-transfer process.
CERAMICS INTERNATIONAL
(2022)
Review
Chemistry, Inorganic & Nuclear
L. Marciniak, K. Kniec, K. Elzbieciak-piecka, K. Trejgis, J. Stefanska, M. Dramicanin
Summary: Transition metal ion-activated phosphors have strong absorption and emission bands in the visible and near-infrared spectral ranges, making them sensitive to temperature variations. By observing temperature-induced changes in emission intensities, bandwidths and shifts, excited state lifetimes, and intensity ratios between emission bands, sensitive and reliable remote temperature measurements can be achieved. This review systematically analyzes the performance of luminescent thermometers based on different transition metal ions and discusses the relationship between their spectroscopic properties, host material structure, and thermometric performance. The engineering of energy transfer between transition metal and other dopant ions for highly sensitive thermometers is highlighted, along with several typical application examples from recent literature.
COORDINATION CHEMISTRY REVIEWS
(2022)
Review
Chemistry, Inorganic & Nuclear
Ahmadreza Rajabi, Robin Grotjahn, Dmitrij Rappoport, Filipp Furche
Summary: This article summarizes the computational studies of lanthanide coordination chemistry and bonding, focusing on the scope and limitations of density functional theory (DFT) in interpreting structures and spectra, elucidating periodic trends, and predicting properties and reactivity.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Qun Ji, Yilei Wu, Xinying Gao, Tingbo Zhang, Yipeng Zhou, Yehui Zhang, Ming-Gang Ju, Jinlan Wang, Xiao Cheng Zeng
Summary: Tin organic-inorganic halide perovskites (tin OIHPs) have a desirable band gap and their power conversion efficiency (PCE) has reached 14%. It was previously believed that the organic cations in tin OIHPs had little impact on the optoelectronic properties. However, we found that defective organic cations with randomly dynamic characteristics do have a significant effect on the optoelectronic properties of tin OIHPs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Multidisciplinary Sciences
Jing Liu, Jie Li, Zhen Xu, Xiong Zhou, Qiang Xue, Tianhao Wu, Mingjun Zhong, Ruoning Li, Rong Sun, Ziyong Shen, Hao Tang, Song Gao, Bingwu Wang, Shimin Hou, Yongfeng Wang
Summary: The study of lanthanide-transition metal heterometallic clusters, which are crucial for various high-tech applications, is rapidly growing. However, synthesizing clusters containing multiple lanthanide atoms remains challenging. The controlled on-surface formation of ligand-stabilized heterometallic Ce/Au clusters containing two, three, and four Ce atoms bridged by Au adatoms demonstrates an efficient strategy for the preparation and organization of multi-Ln-containing clusters.
NATURE COMMUNICATIONS
(2021)
Article
Physics, Applied
Palvan Seyidov, Manfred Ramsteiner, Zbigniew Galazka, Klaus Irmscher
Summary: We report the observation of resonant electronic Raman scattering (ERS) from Ir4+ ions in bulk beta-Ga2O3 crystals. The ERS efficiency is found to strongly depend on the photon energy used for optical excitation and the enhancement mechanism at around 2.9 eV is explained.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Mirko Vanzan, Tiziana Cesca, Boris Kalinic, Chiara Maurizio, Giovanni Mattei, Stefano Corni
Summary: Rare-earth ions sensitization is a relevant topic in modern technologies, and noble metal nanoclusters can effectively enhance lanthanide photoluminescence. Experimental works have shown the importance of nanocluster size and composition in this process. By studying the optoelectronic features of metal clusters and their interaction with defects in the silica matrix, new insights can be gained for designing rare-earth ion sensitizers.
Article
Chemistry, Analytical
Lili Huang, Kaihua Yu, Wenting Zhou, Qiuyi Teng, Zhaoyin Wang, Zhihui Dai
Summary: The research utilizes fluorescent lanthanide coordination polymer networks and principal component analysis to discriminate and quantify multiple metal ions, identifying 14 lanthanide and 12 transition/post-transition metal ions. Additionally, accurate quantification of Cu2+ and Ag(+) is achieved. The method also allows for evaluating the composition of Eu3+/Tb3+ and Fe3+/Fe2+ pairs in mixtures, demonstrating its superiority over inductively coupled plasma-atomic emission spectroscopy.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Review
Chemistry, Inorganic & Nuclear
Mengfei Wang, Kazuyuki Ishii
Summary: This review focuses on the photochemistry of phthalocyanine complexes with transition metal ions, especially second- and third-row transition metal ions. It summarizes their absorption, excited-state dynamics, and photofunctions, providing a direction for designing various photofunctions based on metal phthalocyanine complexes.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Optics
Gohar Hovhannesyan, Vincent Boudon, Maxence Lepers
Summary: This study presents a modified version of the Judd-Ofelt theory, which describes the intensities of f-f transitions for trivalent lanthanide ions in solids. By applying this model to europium, the researchers were able to gain physical insight into all transitions within the ground electronic configuration and quantitatively reproduce experimental absorption oscillator strengths. This model opens up the possibility to interpret polarized-light transitions between individual levels of the ion-crystal system.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Alexandru Topor, Daniel Avram, Radu Dascalu, Catalin Maxim, Carmen Tiseanu, Marius Andruh
Summary: Three 1D coordination polymers with benzoate bridges were assembled with the presence of 18-crown-6-ether, where crown ether molecules played an important role in the supramolecular architecture. A molecular alloy was prepared by substituting Tb-III ions with Eu-III ions in the host lattice. Luminescence thermometry performance of the Tb0.95Eu0.05 system showed a maximum S-r value of 1.88% K-1 at 80 K and decreased to 1.60% K-1 at 313 K. Time-gated emission spectroscopy successfully reduced the spectral overlap of Tb and Eu emissions in the 610 to 625 nm range by 100% at 80 K. Compound 1 and the molecular alloy Tb0.95Eu0.05 exhibited X-ray induced luminescence.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Arka Karmakar, Abdullah Al-Mahboob, Christopher E. Petoukhoff, Oksana Kravchyna, Nicholas S. Chan, Takashi Taniguchi, Kenji Watanabe, Keshav M. Dani
Summary: This study shows that nonradiative energy transfer dominates over interlayer charge transfer in type-II heterostructures formed by transition metal dichalcogenides. It also demonstrates an innovative way to increase the photoluminescence intensity of desired materials by carefully choosing the right material combination.
Article
Polymer Science
Tong Chen, Sanping Zhao
Summary: An effective strategy was developed to fabricate novel lanthanide ions-pyromellitic acid-methoxy poly(ethylene glycol) (Ln-PMA-MPEG) nano-assemblies via biomimetic mineralization. These nano-assemblies showed potential applications as ratiometric fluorescent nanosensors for solvent recognition and metal ion detection.
Review
Chemistry, Inorganic & Nuclear
Narendra Singh Chundawat, Sapana Jadoun, Payam Zarrintaj, Narendra Pal Singh Chauhan
Summary: The application of inorganic chemistry in medicine is rapidly developing, with novel therapeutic and diagnostic metals and metal complexes impacting medical practice. Progress in bio-coordination chemistry is crucial for designing compounds to reduce toxic side effects. Metal-based drugs are widely used in cancer treatment.
Article
Multidisciplinary Sciences
Jordyn Hales, Utkarsh Bajpai, Tongtong Liu, Denitsa R. Baykusheva, Mingda Li, Matteo Mitrano, Yao Wang
Summary: Characterizing and controlling entanglement in quantum materials is crucial for the development of next-generation quantum technologies. In this study, the authors propose a systematic approach to quantify the time-dependent quantum Fisher information and entanglement depth of transient states of quantum materials using time-resolved resonant inelastic x-ray scattering. This work sets the stage for experimentally witnessing and controlling entanglement in light-driven quantum materials via ultrafast spectroscopic measurements.
NATURE COMMUNICATIONS
(2023)