scholarly journals Structural Characterization, Magnetic and Luminescent Properties of Praseodymium(III)-4,4,4-Trifluoro-1-(2-Naphthyl)Butane-1,3-Dionato(1-) Complexes

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 179
Author(s):  
Franz A. Mautner ◽  
Florian Bierbaumer ◽  
Roland C. Fischer ◽  
Ramon Vicente ◽  
Ànnia Tubau ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
Ground State ◽  
Magnetic Measurements ◽  
Luminescent Properties ◽  
Efficient Energy Transfer ◽  
Coordination Numbers ◽  
Efficient Energy ◽  
Mononuclear Complexes ◽  
State Luminescence

Four new Pr(III) mononuclear complexes of formula [Pr(ntfa)3(MeOH)2] (1), [Pr(ntfa)3(bipy)2] (2), [Pr(ntfa)3(4,4′-Mt2bipy)] (3) and [Pr(ntfa)3(5,5′-Me2bipy)] (4), where ntfa = 4,4,4-trifuoro-1-(naphthalen-2-yl)butane-1,3-dionato(1-), 5,5′-Me2bipy = 5,5′-dimethyl-2,2′-dipyridine, 4,4′-Mt2bipy = 4,4′-dimethoxy-2,2′-dipyridine, have been synthesized and structurally characterized. The complexes display the coordination numbers 8 for 1, 3 and 4, and 10 for 2. Magnetic measurements of complexes 1–4 were consistent with a magnetically uncoupled Pr3+ ion in the 3H4 ground state. The solid state luminescence studies showed that the ancillary chelating bipyridyl ligands in the 2–4 complexes greatly enhance the luminescence emission in the visible and NIR regions through efficient energy transfer from the ligands to the central Pr3+ ion; behaving as “antenna” ligands.

Photo and Electroluminescent Properties of a Porphyrin-Poly(p-Phenylene Vinylene) Derivative

1999 ◽  
Vol 598 ◽  
Author(s):  
J. Morgado ◽  
R. Iqbal ◽  
G. Yahioglu ◽  
L. R. Milgrom ◽  
S. C. Moratti ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
Emission Spectra ◽  
Luminescent Properties ◽  
Phenylene Vinylene ◽  
Efficient Energy Transfer ◽  
Light Emitting ◽  
Efficient Energy ◽  
Small Absorption ◽  
Pl Emission

ABSTRACTThe solid state luminescent properties of new statistical copolymers of 2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylene vinylene and a porphyrin-substituted phenylene vinylene are reported. The photoluminescence, PL, emission shows an efficient energy transfer to the porphyrin, in spite of the small absorption coefficient of the porphyrin in the wavelength range of the poly [2-methoxy-5-(2'- ethylhexyloxy)-1,4-phenylene vinylene], MEH-PPV, emission. At a porphyrin content of 0.25%, by weight, the emission is already dominated by the porphyrin. The PL efficiency of these copolymers is significantly reduced from the value of 13% for MEH-PPV down to 3% for the copolymer with 10.84% of porphyrin. Efficient energy transfer is also observed in the emission spectra of light-emitting diodes.

Tunable multicolor luminescent properties of Ca8ZnLa(PO4)7:Ce3+, Mn2+ phosphor via efficient energy transfer

2019 ◽  
Vol 214 ◽  
pp. 116549 ◽  
Author(s):  
Renping Cao ◽  
Yaqin Ran ◽  
Xinyan Lv ◽  
Longxiang Xu ◽  
Huijun Wan ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Luminescent Properties ◽  
Efficient Energy Transfer ◽  
Efficient Energy

A single-phased tunable emission phosphor MgY2Si3O10: Eu3+, Bi3+ with efficient energy transfer for white LEDs

2015 ◽  
Vol 44 (3) ◽  
pp. 1102-1109 ◽  
Author(s):  
Hongpeng Zhou ◽  
Ye Jin ◽  
Mingsong Jiang ◽  
Qingping Wang ◽  
Xingxing Jiang
Keyword(s):  
Energy Transfer ◽  
High Temperature ◽  
Solid State ◽  
Solid State Method ◽  
Efficient Energy Transfer ◽  
White Leds ◽  
Efficient Energy ◽  
State Method ◽  
Tunable Emission

A novel single-phased tunable emitting phosphor MgY2Si3O10: Bi3+, Eu3+ has been synthesized by conventional high temperature solid-state method. Upon the 344 nm excitation, the energy transfer from Bi3+(i) to Bi3+(ii) and both Bi3+ ions to Eu3+ has been investigated in detail.

Energy transfer and luminescent properties of Ca8MgLu(PO4)7:Tb3+/Eu3+ as a green-to-red color tunable phosphor under NUV excitation

RSC Advances ◽  
2015 ◽  
Vol 5 (74) ◽  
pp. 59830-59836 ◽  
Author(s):  
Feiyan Xie ◽  
Junhao Li ◽  
Zhiyue Dong ◽  
Dawei Wen ◽  
Jianxin Shi ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Energy Transfer ◽  
Luminescent Properties ◽  
Potential Candidate ◽  
Efficient Energy Transfer ◽  
Excellent Thermal Stability ◽  
Efficient Energy ◽  
Red Color ◽  
Color Tunable ◽  
Tunable Emission

Ca8MgTb(PO4)7:Eu3+ phosphor, a potential candidate for application in NUV-based WLEDs, can show efficient energy transfer from Tb3+ to Eu3+, color-tunable emission from green to pure red and excellent thermal stability.

Efficient artificial light-harvesting systems based on aggregation-induced emission constructed in supramolecular gels

Soft Matter ◽  
2021 ◽  
Author(s):  
Xinxian Ma ◽  
bo qiao ◽  
Jinlong Yue ◽  
JingJing Yu ◽  
yutao geng ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Rhodamine B ◽  
Fluorescent Dyes ◽  
Light Harvesting ◽  
Artificial Light ◽  
Efficient Energy Transfer ◽  
Aggregation Induced Emission ◽  
Efficient Energy ◽  
Harvesting Systems ◽  
Acyl Hydrazone

Based on a new designed acyl hydrazone gelator (G2), we developed an efficient energy transfer supramolecular organogel in glycol with two different hydrophobic fluorescent dyes rhodamine B (RhB) and acridine...

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