In complex [Na-Dy(μ-L)](HL = 8-hydroxyquinoline) (1), the DyL units were linked by the Na ions to form one-dimensional chains. The chain exhibited slow magnetic relaxation behavior at low temperature, accompanied by obvious quantum tunneling of magnetization (QTM). Very weak fluorescence was detected in 1 due to the mismatch of the state energy between Dy and the L ligand. Through the magnetic dilution of diamagnetic Y ions, complex [NaDyY(μ-L)] (2) was obtained; in 2 the QTM of Dy was suppressed and the single ion magnet (SIM) behavior was enhanced. More interestingly, the fluorescence emission of 8-hydroxyquinoline was lightened by the Y ions in 2, whose intensity is linearly correlated with the temperature variation. The examples of dual functional fluorescent thermometers and SIM materials are attained simply by ion dilution, achieving the effect of killing two birds with one stone.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d0dt04058d | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
High-Quantum-Efficiency Pr-Doped LiLaZrO Garnet and Associated Temperature-Sensing Performance.
Inorg Chem
December 2024
State Key Laboratory of Crystal Materials and School of Crystal Materials, Shandong University, Jinan, Shandong 250100, China.
Article Synopsis
- Researchers developed a new Pr-doped luminescent thermometer using a tetragonal-phase LiLaZrO (Pr:LLZO) garnet, which shows enhanced temperature-sensing performance.
- The luminescent properties of Pr:LLZO exhibit a high room-temperature photoluminescence quantum efficiency of 77.48%, surpassing traditional Pr-doped garnet phosphors.
- The study highlights distinct quenching mechanisms in Pr:LLZO compared to other materials, offering insights for designing effective luminescent thermometers.
Comparative optical thermometry analysis using NaSrPO:Er/Yb phosphors: evaluation of LIR and LIR methods for high-resolution temperature sensing.
RSC Adv
December 2024
Laboratoire de Physique Appliquée, Groupe des Matériaux Luminescents, Faculté des Sciences de Sfax, Département de Physique, Université de Sfax Sfax B.P. 3000 Tunisia
Optical thermometry is a valuable non-contact technique for temperature measurement, especially in environments where traditional methods are impractical. Despite its advantages, enhancing the precision of optical thermometers remains a significant challenge. In this study, we explored the thermometric properties of NaSrPO phosphors co-doped with Er/Yb, synthesized a solid-state reaction method, for temperature sensing within the 200-440 K range under 980 nm excitation.
View Article and Find Full Text PDFRational design of 1, 2, 4, 5-tetraphenyl-1H-imidazole-based AIEgens with tunable intramolecular charge transfer and restricted intramolecular rotation processes for multifunctional sensing.
Spectrochim Acta A Mol Biomol Spectrosc
December 2024
National Demonstration Center for Experimental Chemistry Education, Hebei Key Laboratory of Organic Functional Molecules, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, Hebei 050024, PR China. Electronic address:
Aggregation-induced emission fluorogens (AIEgens) with intramolecular charge transfer (ICT) characteristic are widely used in the detection of various analytes owing to their highly tunable fluorescence emission properties. However, facilely synthesis of AIEgens with ICT characteristic for multiple sensing is still rare and limited in use. In this work, two new AIEgens of 1,2-bis(4-alkoxycarbonylphenyl)-4,5-bis(4-methoxyphenyl)-1H-imidazole (AMI) and its hydrolyzed derivative 1,2-bis(4-carboxylphenyl)-4,5-bis(4-methoxyphenyl)-1H-imidazole (CMI) were facilely synthesized with donor-π-acceptor (D-π-A) structures.
View Article and Find Full Text PDFConstructing Dual-Emitting via Energy Transfer in SrScOF:Mn,Nd Phosphors For High-Performance Temperature Sensing.
Inorg Chem
December 2024
School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, P.R. China.
The development of high-sensitivity thermometers has become increasingly important in recent years as the demand for noncontact optical temperature measurement has grown. Herein, we report a series of SrScOF:Mn,Nd (SSOF:Mn,Nd) phosphors synthesized by the traditional high-temperature solid-state method for high-performance temperature sensing. SrScOF possesses a [ScO6F] octahedron and [SrO9F] tridecahedron, doped Mn ions occupy the octahedral sites and emit deep red light at 650-750 nm, and doped Nd ions occupy the tridecahedral sites and emit near-infrared light.
View Article and Find Full Text PDFUltra-wide band near-infrared (NIR) optical thermometry (12-673 K) performance enhanced by Stark sublevel splitting in Er ions near the first biological window in the PbZrTiO:Er/Yb phosphor.
Phys Chem Chem Phys
December 2024
Department of Physics, University of Free State, Bloemfontein 9300, Republic of South Africa.
The fluorescence intensity ratio (FIR) approach, which relies on thermally coupled levels (TCLs), is significantly important for optical thermometry at room temperature and above, but was found to be impractical for low temperature sensing due to limited population density (thermal) or lack of spectrum at extremely low temperatures. Herein, we report a wide temperature range (12-673 K) sensing capability of the PbZrTiO:Er/Yb (C1:PZT) phosphor utilising the bandwidth of Stark sublevel split near-infrared (NIR) emission bands as one sensing parameter and FIR as another. Motivated by our previous studies on upconversion (UC) and the promising thermometry performance of the C1:PZT phosphor for real time nanothermometer monitoring (using visible TCLs), this work extends to the same thermometry application using UC-NIR emission as TCLs.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!