Syntheses and photoluminescence of copper(i) halide complexes containing dimethylthiophene bidentate phosphine ligands

2019 ◽  
Vol 43 (34) ◽  
pp. 13408-13417 ◽  
Author(s):  
Qiong Wei ◽  
Hong-Ting Chen ◽  
Li Liu ◽  
Xin-Xin Zhong ◽  
Lei Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Room Temperature ◽  
Green Emission ◽  
Phosphine Ligands ◽  
Bluish Green ◽  
Bidentate Phosphine ◽  
Halide Complexes

Neutral dinuclear four-coordinate Cu(i) halide complexes containing thiophene exhibit intense bluish green to yellow green emission in the solid state at room temperature.

A new strategy to synthesize three-coordinate mononuclear copper(i) halide complexes containing a bulky terphenyl bidentate phosphine ligand and their luminescent properties

2019 ◽  
Vol 43 (8) ◽  
pp. 3390-3399 ◽  
Author(s):  
Li-Ping Liu ◽  
Rui Zhang ◽  
Li Liu ◽  
Xin-Xin Zhong ◽  
Fa-Bao Li ◽  
...  
Keyword(s):  
Solid State ◽  
Room Temperature ◽  
Green Emission ◽  
Luminescent Properties ◽  
Phosphine Ligand ◽  
New Strategy ◽  
Bidentate Phosphine ◽  
Halide Complexes ◽  
Bidentate Phosphine Ligand

Three mononuclear three-coordinate Cu(i) halide complexes were synthesized by a new strategy and they exhibit green to yellow green emission in the solid state at room temperature.

Synthesis and Solid-State Behavior of Host–Guest Carbonyl Rh(I) Polymers Assembled through Bidentate Phosphine Ligands

2008 ◽  
Vol 8 (3) ◽  
pp. 854-862 ◽  
Author(s):  
Nikolina Janjic ◽  
Giulia Peli ◽  
Luigi Garlaschelli ◽  
Angelo Sironi ◽  
Piero Macchi
Keyword(s):  
Solid State ◽  
Phosphine Ligands ◽  
State Behavior ◽  
Bidentate Phosphine

Highly efficient blue–green neutral dinuclear copper(I) halide complexes containing bidentate phosphine ligands

2016 ◽  
Vol 180 ◽  
pp. 64-72 ◽  
Author(s):  
Xiao Hong ◽  
Bo Wang ◽  
Li Liu ◽  
Xin-Xin Zhong ◽  
Fa-Bao Li ◽  
...  
Keyword(s):  
Phosphine Ligands ◽  
Dinuclear Copper ◽  
Highly Efficient ◽  
Bidentate Phosphine ◽  
Halide Complexes

Luminescent Silver(I) and Copper(I) Systems Containing Pyridyl Phosphine Bridges

2009 ◽  
Vol 64 (11-12) ◽  
pp. 1525-1534 ◽  
Author(s):  
Olga Crespo ◽  
M. Concepción Gimeno ◽  
Antonio Laguna ◽  
Carmen Larraz
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Room Temperature ◽  
Silver Salt ◽  
Phosphine Ligands ◽  
X Ray Diffraction ◽  
X Ray ◽  
Molar Ratios ◽  
Pyridylphosphine Ligands

Luminescent silver(I) and copper(I) complexes containing pyridylphosphine ligands have been synthesized and structurally characterized by single crystal X-ray diffraction methods. The reaction of Ag(OTf) (OTf = trifluoromethanesulfonate) with 2-pyridyldiphenylphosphine in different molar ratios gives the species [Ag2(OTf)2(μ-PPh2py)2] (1), [Ag(PPh2py)2]OTf (2), [Ag(PPh2py)3]OTf (3), and [Ag2(PPh2py)3](OTf)2 (4) with several modes of coordination of the pyridylphosphine. The oxidation of the phosphine in compound 4 gave [Ag2(OTf)(μ-PPh2py)2(OPPh2py)]OTf (5) which has been structurally characterized. It shows two bridging phosphine ligands and one chelating OPPh2py ligand. The reactions of the silver salt with bis(2-pyridyl)phenylphosphine in different molar ratios affords the complex [Ag2(OTf)2(μ-PPhpy2)2] (6), while the corresponding reactions with [Cu(NCMe)4]PF6 lead to two different compounds, namely [Cu2(NCMe)2(μ-PPhpy2)2](PF6)2 (7) and [Cu2(PPhpy2)2(μ-PPhpy2)2](PF6)2 (8). All complexes exhibit luminescence in the solid state at room temperature and at 77 K

scholarly journals Crystal structure and luminescent properties of bis[2,6-dimethyl-3-(pyridin-2-yl-κN)pyridin-4-yl-κC 4](2,2,6,6-tetramethylheptane-3,5-dionato-κ2 O,O′)iridium(III) ethyl acetate monosolvate

2018 ◽  
Vol 74 (9) ◽  
pp. 1206-1210 ◽  
Author(s):  
Ki-Min Park ◽  
Suk-Hee Moon ◽  
Youngjin Kang
Keyword(s):  
Room Temperature ◽  
Green Emission ◽  
Luminescent Properties ◽  
Title Complex ◽  
Chelating Ligands ◽  
Coordination Environment ◽  
Distorted Octahedral Coordination ◽  
Distorted Octahedral ◽  
Bluish Green ◽  
Distorted Octahedral Coordination Environment

In the solvated title compound, [Ir(C12H11N2)2(C11H19O2)]·CH3CO2C2H5, the IrIII ion adopts a distorted octahedral coordination environment resulting from its coordination by two C,N-chelating 2,6-dimethyl-3-(pyridin-2-yl)pyridin-4-yl ligands and one O,O′-chelating 2,2,6,6-tetramethylheptane-3,5-dionate ligand. The C,N-chelating ligands are perpendicular to each other [dihedral angle between the least-squares planes = 87.86 (5)°] and are arranged in a cis-C,C′ and trans-N,N′ fashion. In the crystal, pairwise C—H...π interactions between inversion-related IrIII complexes are present, forming a dimeric structure. The title complex shows bright bluish–green emission with good quantum efficiency in solution at room temperature.

Improved Sol-Gel Materials for Efficient Solid State Dye Lasers

1993 ◽  
Vol 329 ◽  
Author(s):  
Michael Canva ◽  
Patrick Georges ◽  
Jean-Fran^ois Perelgritz ◽  
Alain Brun ◽  
Fréddric Chaput ◽  
...  
Keyword(s):  
Solid State ◽  
Physical Properties ◽  
Room Temperature ◽  
Sol Gel ◽  
Tunable Lasers ◽  
Optical Quality ◽  
Dye Lasers ◽  
Laser Dyes ◽  
Host Matrix ◽  
Host Matrices

AbstractPhotoresistant laser dyes were trapped in silica based xerogel host matrices to obtain solid state tunable lasers. For this purpose very dense xerogel samples with improved chemical and physical properties were prepared at room temperature by the sol-gel technology. The as-prepared materials were polished to obtain optical quality surfaces and were used as new lasing media.Lasing action of such different dyes as rhodamine, perylene and pyrromethene doping dense sol-gel matrices was demonstrated. Efficiencies of 30 % or lifetimes of more than 100,000 shots were achieved with different new ≤dye dopant/host matrix≥ couples. Their different performances are reviewed and discussed.

Imidazole Promoted Efficient Anomerization of β-D-Glucose Pentaacetate in Organic Solutions and Solid State

2019 ◽  
Author(s):  
Meifeng Wang ◽  
Liyin Zhang ◽  
Yiqun Li ◽  
Liuqun Gu
Keyword(s):  
Solid State ◽  
Organic Solvents ◽  
Room Temperature ◽  
Materials Design ◽  
The Future ◽  
Organic Solutions ◽  
Glucose Pentaacetate

<p></p>Anomerization of glycosides were rarely performed under basic condition due to lack of efficiency. Here an imidazole promoted anomerization of β-D-glucose pentaacetate was developed; and reaction could proceed in both organic solvents and solid state at room temperature. Although mechanism is not yet clear, this unprecedent mild anomerization in solid state may open a new promising way for stereoseletive anomerization of broad glucosides and materials design in the future..

Circular dichroism and infrared study of β-turn formation in repeat peptides of elastin

1987 ◽  
Vol 52 (5) ◽  
pp. 1356-1361
Author(s):  
S. Abdel Rahman ◽  
M. Elsafty ◽  
A. Hattaba
Keyword(s):  
Circular Dichroism ◽  
Solid State ◽  
Ir Spectra ◽  
Chain Length ◽  
Room Temperature ◽  
Infrared Study ◽  
Feature Characteristic ◽  
C 50 ◽  
The Stability ◽  
Circular Dichroïsm

The conformation of elastin-like peptides Boc-Ala-Pro-Gly-Val-APEGM, Boc-Ala-Pro-Gly-Val-Gly-Val-APEGM, Boc-Ala-Pro-Gly-Val-Ala-Pro-Gly-Val-Gly-Val-APEGM, Boc-Ala-Pro-Gly-Val-Gly-Val-Ala-Pro-Gly-Val-Gly-Val-APEGM were examined in solution using circular dichroism at 30 °C, 50 °C, and 70 °C and in solid state by IR at room temperature. The studies show that the β-turn is a significant conformational feature for peptides under investigation in solution at 30 °C and 50 °C, but at 70 °C the tetra, hexa, and decapeptides show the CD feature characteristic of the β-structure while the dodecapeptide spectra show the presence of β-turn which indicates the stability of the β-turn at this chain length. The IR spectra show that in the solid state at room temperature all investigated peptides assume essentially a β-turn except the tetrapeptide which present evidence of antiparallel β-structure. The β-turn contribution in the IR spectra increases with the increase of the chain length of the peptide.

scholarly journals Polymer Thermal Treatment Production of Cerium Doped Willemite Nanoparticles: An Analysis of Structure, Energy Band Gap and Luminescence Properties

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1118
Author(s):  
Ibrahim Mustapha Alibe ◽  
Khamirul Amin Matori ◽  
Mohd Hafiz Mohd Zaid ◽  
Salisu Nasir ◽  
Ali Mustapha Alibe ◽  
...  
Keyword(s):  
Solid State ◽  
Thermal Treatment ◽  
Band Gap ◽  
Optical Band Gap ◽  
Dopant Concentration ◽  
Blue Emission ◽  
Green Emission ◽  
Band Gap Energy ◽  
Solid State Lighting ◽  
Gap Energy

The contemporary market needs for enhanced solid–state lighting devices has led to an increased demand for the production of willemite based phosphors using low-cost techniques. In this study, Ce3+ doped willemite nanoparticles were fabricated using polymer thermal treatment method. The special effects of the calcination temperatures and the dopant concentration on the structural and optical properties of the material were thoroughly studied. The XRD analysis of the samples treated at 900 °C revealed the development and or materialization of the willemite phase. The increase in the dopant concentration causes an expansion of the lattice owing to the replacement of larger Ce3+ ions for smaller Zn2+ ions. Based on the FESEM and TEM micrographs, the nanoparticles size increases with the increase in the cerium ions. The mean particles sizes were estimated to be 23.61 nm at 1 mol% to 34.02 nm at 5 mol% of the cerium dopant. The optical band gap energy of the doped samples formed at 900 °C decreased precisely by 0.21 eV (i.e., 5.21 to 5.00 eV). The PL analysis of the doped samples exhibits a strong emission at 400 nm which is ascribed to the transition of an electron from localized Ce2f state to the valence band of O2p. The energy level of the Ce3+ ions affects the willemite crystal lattice, thus causing a decrease in the intensity of the green emission at 530 nm and the blue emission at 485 nm. The wide optical band gap energy of the willemite produced is expected to pave the way for exciting innovations in solid–state lighting applications.

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