A Series of 2D and 3D Novel Lanthanide Complexes Constructed from Squarate C4O42–: Syntheses, Structures, Magnetic Properties, and Near-infrared Emission Properties

2011 ◽  
Vol 64 (10) ◽  
pp. 1373 ◽  
Author(s):  
Li Wang ◽  
Wen Gu ◽  
Xiu-Jun Deng ◽  
Ling-Fei Zeng ◽  
Sheng-Yun Liao ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Near Infrared ◽  
Variable Temperature ◽  
Infrared Emission ◽  
Luminescence Spectra ◽  
Coordination Modes ◽  
Metal Precursors ◽  
Trivalent Lanthanide ◽  
Lanthanide Metal ◽  
2D And 3D

The solvothermal combination of trivalent lanthanide metal precursors with a squarate ligand (H2C4O4, 3,4-dihydroxy-3-cyclobutene-1,2-dione) has afforded the preparation of a family of eight new coordination polymers, [Ln2(C4O4)3(H2O)4] (Ln = La–Nd, Ho) (1–5), [Ln2(C4O4)3(H2O)8] (Ln = Er, Dy) (6, 7), and Tb2(C4O4)2(C2O4)(H2O)4 (8). Structural analysis reveals that the squarate ligand displays versatile coordination modes to generate novel 2D and 3D frameworks. Three new coordination modes, a bidentate/monodentate μ3 and two bidentate/monodentate μ4 coordination modes, are first reported. In addition, the variable-temperature magnetic properties of the Pr, Nd, Ho, Dy, and Tb complexes, the solid-state near-infrared luminescence spectra of the Pr, Nd, Ho, and Er complexes, and their thermogravimetric analyses are discussed.

scholarly journals Neodymium β-diketonate showing slow magnetic relaxation and acting as a ratiometric thermometer based on near-infrared emission

RSC Advances ◽  
2019 ◽  
Vol 9 (41) ◽  
pp. 23444-23449 ◽  
Author(s):  
Kunal Kumar ◽  
Daisuke Abe ◽  
Keiko Komori-Orisaku ◽  
Olaf Stefańczyk ◽  
Koji Nakabayashi ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Near Infrared ◽  
Infrared Emission ◽  
Thermally Induced ◽  
Slow Magnetic Relaxation ◽  
Near Infrared Emission

In this work, we investigated thermally-induced Nd-based one centred ratiometric thermometer which also exhibit single molecule magnetic properties.

Simultaneous broadband near-infrared emission and magnetic properties of single phase Ni2+-doped β-Ga2O3 nanocrystals via mediated phase-controlled synthesis

2015 ◽  
Vol 3 (12) ◽  
pp. 2886-2896 ◽  
Author(s):  
Suiying Ye ◽  
Yuanhao Zhang ◽  
Huilin He ◽  
Jianrong Qiu ◽  
Guoping Dong
Keyword(s):  
Magnetic Properties ◽  
Single Phase ◽  
Near Infrared ◽  
Infrared Emission ◽  
High Accuracy ◽  
Controlled Synthesis ◽  
Ferromagnetic Properties ◽  
Near Infrared Emission

Broadband near-infrared emission and ferromagnetic properties were detected in single phase Ni2+-doped β-Ga2O3 nanocrystals, which is meaningful for its application in high-accuracy communications, bio-labels, etc.

Luminescence Spectra of TeO2-PbO-Li2O Doped Nd2O3 Glass

2012 ◽  
Vol 501 ◽  
pp. 121-125 ◽  
Author(s):  
K. Azman ◽  
W.A.W. Razali ◽  
H. Azhan ◽  
M.R. Sahar
Keyword(s):  
Room Temperature ◽  
Near Infrared ◽  
Tellurite Glass ◽  
Emission Spectra ◽  
Infrared Emission ◽  
Luminescence Spectra ◽  
Excitation Wavelength ◽  
Wavelength Emission ◽  
Absorption And Emission Spectroscopy ◽  
Near Infrared Emission

A tellurite glass of TeO2-PbO-Li2O doped with Nd2O3 has been successfully fabricated by using the conventional melt-quenched technique. The absorption and emission spectroscopy have been identified using UV-VIS-NIR and photoluminescence spectrometer, respectively. From the spectroscopy, ten significant spectra have been observed in the region of 400-900 nm. The absorption wavelength centered at 585 nm attributed to 4I9/2 → 4G5/2 transition is the predominant wavelength to be used as the excitation wavelength. Emission spectra have been determined by using 585 nm excitation wavelength at room temperature. From the emission spectra, seven distinctive upconversion bands contributed from Nd3+ were observed in the region of 400-1500 nm. It was found that the bands were centered at 450 nm (4G11/2 → 4I9/2), 485 nm (4G11/2 → 4I11/2), 605 nm (4G11/2 → 4I15/2), 665 nm (4G7/2 → 4I13/2), 880 nm (4F3/2 → 4I9/2), 1062 nm (4F3/2 → 4I11/2) and 1340 nm (4F3/2 → 4I11/2), respectively. Tthese emission bands showed the possibility of visible and near infrared emission spectra.

scholarly journals Two Lanthanide Metal–Organic Frameworks Based on Semi-Rigid T-Shaped Tricarboxylate Ligand: Syntheses, Structures, and Properties

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 868
Author(s):  
Yun-Shan Xue ◽  
Zhuo-Lin Chen ◽  
Youzhen Dong ◽  
Wei-Wei Cheng
Keyword(s):  
Near Infrared ◽  
Metal Organic Frameworks ◽  
Infrared Emission ◽  
Tripodal Ligand ◽  
Structures And Properties ◽  
3D Network ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Near Infrared Emission ◽  
Solvothermal Conditions

By using a semi-rigid tripodal ligand 5-(4-carboxybenzyloxy)isophthalic acid (H3L) and lanthanide metal ions (Nd3+, Tb3+), two novel lanthanide metal–organic frameworks, namely, {[Nd2L2(DMF)4] DMF}n (1), and {TbL(DMF)(H2O)}n (2), were synthesized under mild solvothermal conditions and structurally characterized by X-ray single crystal diffraction. Compounds 1 and 2 are isostructural, in which L3– ligands linked dinuclear lanthanide metal–carboxylate units to form non-interpenetrated 3D network with (3,6)-connected topology. Luminescent investigations reveal that compound 1 displays the near-infrared emission at room temperature, and compound 2 can be employed as selective probe for Cr2O72− anion in aqueous solution based on luminescence quenching. Moreover, compound 2 exhibits catalytic activity for cyclo-addition of CO2 and epoxides under relatively mild conditions.

scholarly journals Amphiprotism-Coupled Near-Infrared Emission in Extended Pyrazinacenes Containing Seven Linearly Fused Pyrazine Units

2019 ◽  
Vol 141 (50) ◽  
pp. 19570-19574 ◽  
Author(s):  
Gary J. Richards ◽  
Aël Cador ◽  
Shinji Yamada ◽  
Anna Middleton ◽  
Whitney A. Webre ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Emission ◽  
Near Infrared Emission

Broadband near-infrared emission of K3ScF6:Cr3+ phosphors for night vision imaging system sources

2021 ◽  
Vol 417 ◽  
pp. 129271
Author(s):  
Haojun Yu ◽  
Jian Chen ◽  
Ruiyu Mi ◽  
Juyu Yang ◽  
Yan-gai Liu
Keyword(s):  
Near Infrared ◽  
Imaging System ◽  
Infrared Emission ◽  
Night Vision ◽  
Near Infrared Emission

Broadband near infrared emission of Er3+/Yb3+ co-doped fluorotellurite glass

2021 ◽  
Vol 866 ◽  
pp. 158568
Author(s):  
Jiaming Liu ◽  
Xin Huang ◽  
Heng Pan ◽  
Xu Zhang ◽  
Xiujie Fang ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Emission ◽  
Near Infrared Emission ◽  
Co Doped

Ab Initio Two-sites Occupancy and Broadband Near-Infrared Emission of Cr3+ in Li2MgZrO4

2021 ◽  
Author(s):  
Xue Zhou ◽  
Jinmeng Xiang ◽  
Jiming Zheng ◽  
Xiaoqi Zhao ◽  
Hao Suo ◽  
...  
Keyword(s):  
Plant Growth ◽  
Ab Initio ◽  
Light Source ◽  
Near Infrared ◽  
Broad Band ◽  
Infrared Emission ◽  
Night Vision ◽  
Light Emitting ◽  
Non Destructive ◽  
Near Infrared Emission

Near-infrared (NIR) phosphor-converted light-emitting diodes (pc-LEDs) light source have great potential in non-destructive detection, promoting plant growth and night vision applications, while the discovery of a broad-band NIR phosphor still...

Sign in / Sign up

Export Citation Format

Share Document