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Journal articles on the topic 'Europium III complexe'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

BAEK, NAM SEOB, SOO-GYUN ROH, YONG HEE KIM, MIN-KOOK NAH, and HWAN KYU KIM. "LUMINESCENCE ENHANCEMENT OF EU(III)-CHELATED COMPLEXES BASED ON NAPHTHALENE DERIVATIVE THROUGH COORDINATION ENVIRONMENT." Journal of Nonlinear Optical Physics & Materials 13, no. 03n04 (2004): 627–32. http://dx.doi.org/10.1142/s0218863504002377.

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We have designed and synthesized novel luminescent lanthanide complexes based on a naphthalene derivative. The coordination number of complexed ligands with Eu 3+ ions is an important parameter to enhance the photoluminescence (PL) intensity. The photoluminescence spectra of Eu ( III )-cored complexes exhibit a sharp red emission band at 612 nm, corresponding to the 5 D 0→7 F 2 transition of the trivalent Eu ion. The saturated europium complexes (C-2 and C-3) have much stronger PL intensity than the unsaturated 6-coordinated europium complex (C-1), due to the instability of the C-1 complex. In

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2

Калиновская, И. В. "Люминесцентные свойства соединений европия(III) с хинолиновой кислотой и фосфорсодержащими нейтральными лигандами". Журнал технической физики 127, № 8 (2019): 231. http://dx.doi.org/10.21883/os.2019.08.48034.332-18.

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AbstractLuminescent mixed-ligand europium(III) complexes with quinolinic acid and phosphorus-containing neutral ligands with a dimeric structure of the composition Eu_2(QA)_3 · 3Н_2О, Eu_2(QA)_3 · D · 2Н_2О, where QA is quinolinic acid and D is hmpa (hexamethylphosphortriamide), tppo (triphenylphosphinoxide), (hmpa), or Et_6pa (hexaethylphosphortriamide), are synthesized. The thermal and spectral-luminescent properties of the synthesized complex mixed-ligand europium(III) compounds are studied. It is shown that the detachment of water and neutral ligand molecules during thermolysis occurs in t

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3

Wang, Li Hua. "Study on the Luminescent Properties of Europium (III) Complex with 2, 3-Pyrazinedicarboxylic Acid." Advanced Materials Research 643 (January 2013): 60–63. http://dx.doi.org/10.4028/www.scientific.net/amr.643.60.

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Two new europium (III) complexes luminescent materials, Eu-PDA and Eu-PDA-Phen, were prepared by the reaction of Eu(NO3)3·6H2O with 2, 3-pyrazinedicarboxylic acid (PDA) and 1,10-phenanthroline, respectively. The luminescent properties of two europium (III) complexes in solid and in organic solvents have been studied. The effect of organic solvents and metal ions (Ca2+ and Mg2+) on the luminescent intensity of the Eu (III) complexes have also been investigated. The results show that the metal ions (Ca2+ and Mg2+) could enhance the luminescent intensity of Eu-PDA-Phen complex and reduce luminesc

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4

Hernández-Fuentes, Carlos, Rosario Ruiz-Guerrero, Angel de Jesús Morales-Ramírez, Paulina Molina-Maldonado, and Dulce Y. Medina-Velazquez. "New Mononuclear Complex of Europium(III) and Benzoic Acid: From Synthesis and Crystal Structure Solution to Luminescence Emission." Crystals 10, no. 8 (2020): 674. http://dx.doi.org/10.3390/cryst10080674.

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This study presents a general method which can be used for the synthesis of mononuclear complexes with europium(III) and organic ligands with carboxylic groups. It describes the procedure for preparing a new mononuclear coordination complex with europium(III) and carboxylate ligands sourced from benzoic acid. The construction of mononuclear complexes with a coordination sphere saturated in carboxylic ligands must go through the preparation and purification of a europium(III) intermediate complex that presents a coordination sphere with anions that will be later exchanged for carboxylic groups

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5

Wang, Yongli, Wenzhen Guo, Dongling Liu, Ying Yang, and Wenjun Zheng. "1,2,4-Diazaphospholide complexes of yttrium(iii), dysprosium(iii), erbium(iii), and europium(ii,iii): synthesis, X-ray structural characterization, and EPR analysis." Dalton Transactions 45, no. 3 (2016): 899–903. http://dx.doi.org/10.1039/c5dt04285b.

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Heteroleptic, charge-separated heterobimetallic, and polymeric alkali metal ate complexes of 1,2,4-diazaphospholide yttrium(iii), dysprosium(iii), erbium(iii), europium(iii) and europium(ii) were prepared.

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6

TAMAKI, KOICHI, and MASATSUGU SHIMOMURA. "FABRICATIONS OF LUMINESCENT POLYMERIC NANOPARTICLES CONTAINING LANTHANIDE (III) ION COMPLEXES." International Journal of Nanoscience 01, no. 05n06 (2002): 533–37. http://dx.doi.org/10.1142/s0219581x02000620.

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Luminescent poly(ethylene glycol)-coated polystyrene (PSt) nanometer-sized particles (nanoparticles) containing trivalent europium or terbium ion were prepared by free-radical dispersion copolymerization of styrene, poly(ethylene glycol) (PEG) macromonomer, and the lanthanide complex which was coordinated with 1,10-phenanthroline possessing acryl group. Red and green luminescences with narrow band width were observed from each nanoparticle containing europium and terbium complexes, respectively.

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7

Xu, Hui, Qiang Sun, Zhongfu An, Ying Wei, and Xiaogang Liu. "Electroluminescence from europium(III) complexes." Coordination Chemistry Reviews 293-294 (June 2015): 228–49. http://dx.doi.org/10.1016/j.ccr.2015.02.018.

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8

Feng, Yi Min. "The Effect of 1,10-Phenanthroline on the Luminescent Properties of Eu (III) and Tb (III) Complexes with 2-Acetylnaphthol-Hydrazinehydrate." Advanced Materials Research 322 (August 2011): 345–48. http://dx.doi.org/10.4028/www.scientific.net/amr.322.345.

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Four complexes have been prepared by reaction of rare earth nitrates with 2-acetylnaphthol-hydrazinehydrate (ANH) and phenanthroline. The complexes were characterized by IR spectra. The fluorescent properties of the europium and terbium complexes in solid and in DMSO solution were investigated and the effects of phenanthroline on the luminescent intensity of europium and terbium complexes also were studied. The results show that the europium and terbium ions formed stable complexes by coordinating to the nitrogen atoms and oxygen atoms of the ligands and the nitrates. And the complexes exhibit

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9

Калиновская, И. В. "Разнолигандные комплексные соединения европия (III) с o-метоксибензойной кислотой и фосфорсодержащими нейтральными лигандами". Журнал технической физики 128, № 5 (2020): 612. http://dx.doi.org/10.21883/os.2020.05.49318.310-19.

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The luminescent coordination multi-ligand compounds of europium (III) with o-methoxybenzoic acid and island-containing phosphorus-containing neutral ligands of the composition Eu (MOBA) 3 • 3Н2О and Eu (MOBA) 3 • L, where MOBA is o-methoxybenzoic acid, D is hmpa (D hexamethylphosphoric triamide), tppo (triphenylphosphine oxide), Et6pa (hexaethylphosphotriamide). The composition, structure, and thermal properties of complex multi-ligand compounds of europium (III) were studied. It was shown that during thermolysis, detachment of a neutral ligand molecule occurs in one stage with an endothermic

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10

Никифоров, В. Г., Д. К. Жарков, Д. В. Лапаев та ін. "Влияние beta-дикетонатного комплекса европия(III) на ориентационные отклики в сигнале сверхбыстрого оптического эффекта Керра-=SUP=-*-=/SUP=-". Журнал технической физики 126, № 1 (2019): 14. http://dx.doi.org/10.21883/os.2019.01.47046.280-18.

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AbstractExperiments on recording the ultrafast optical Kerr effect (OKE) in solution of europium(III) β‑diketonate complexes in toluene at a concentration of 10^–2 mol/L showed that the total OKE signal is not a superposition of two contributions, one of which is related to the vibrational–rotational dynamics of toluene molecules, while the other is due to the vibrational–rotational dynamics of the europium(III) complexes. This immediately indicates that the europium(III) complexes essentially change the structure of liquid toluene, which is reflected in the character of an orientational respo

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11

Калиновская, И. В. "Спектрально-люминесцентные свойства разнолигандных комплексных соединений европия(III) c o-метоксибензойной кислотой и фосфорсодержащими нейтральными лигандами". Журнал технической физики 128, № 6 (2020): 692. http://dx.doi.org/10.21883/os.2020.06.49397.352-19.

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The spectral and luminescent properties of complex compounds of europium (III) with o-methoxybenzoic acid and island-containing phosphorus-containing neutral ligands of the composition Eu (MOBA) 3 • 3Н2О and Eu (MOBA) 3 • L, where MOBA is o-methoxybenzoic acid, D is studied (hexamethylphosphoric triamide), tppo (triphenylphosphine oxide), Et6pa (hexaethylphosphotriamide). It was found that the excitation energy is transferred to the europium ion both from the levels of o-methoxybenzoic acid and from the levels of phosphorus-containing neutral ligands.The electronic absorption spectra, the lumi

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12

Lis, Stefan, and Małgorzata Kaczmarek. "Energy transfer process in the reaction systemNH2OH-OH-NaOH-CU(II)−Eu(III)/ thenoyltrifluoroacetone." International Journal of Photoenergy 7, no. 3 (2005): 143–46. http://dx.doi.org/10.1155/s1110662x05000218.

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Chemiluminescence (CL) in the system containing hyrdroxylamine, sodium hydroxide, copper(II) ions and complex of europium(III) with thenoyltrifluoroacetone has been studied. A weak emission arises from hydroxylamine in the presence of copper(II) ions in a basic aqueous solution. Addition of europium(III) chelate to this system causes a significant increase in the chemiluminescence intensity. The dominant band observed in the emission spectrum occurs atλ∼600 nm, confirming that Eu(III) ions are the only emitters in the system studied. A strong correlation between the CL intensity and the concen

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13

Frawley, Andrew T., Holly V. Linford, Matthieu Starck, Robert Pal, and David Parker. "Enantioselective cellular localisation of europium(iii) coordination complexes." Chemical Science 9, no. 4 (2018): 1042–49. http://dx.doi.org/10.1039/c7sc04422d.

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14

Калиновская, И. В., та А. Н. Задорожная. "Спектрально-люминесцентные свойства разнолигандных комплексных соединений европия(III) с n-метилбензойной кислотой". Журнал технической физики 127, № 11 (2019): 765. http://dx.doi.org/10.21883/os.2019.11.48512.71-19.

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Abstract The spectral-luminescent properties of europium(III) complexes with p -methylbenzoic acid and nitrogen- and phosphorus-containing neutral ligands of compositions [Eu( p -MBA)_3 · D]_2 · x H_2O and [Eu( p ‑MBA)_3 · 2H_2O]_ n , where p -MBA is the anion of p -methylbenzoic acid and D is 1,10-phenanthroline (phen), 2,2' dipyridyl (dipy), triphenylphosphine oxide (tppo) ( х = 0), hexamethylphosphortriamide (hmpa) ( x = 1), or benzotriazole (bt) ( x = 2) are studied. The electronic absorption spectra, the luminescence excitation spectra, and the Stark structure of ^5 D _0−^7 F _ j ( j = 0–

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15

Rodrigues, Manuela J. E., Filipe A. Almeida Paz, Rute A. Sá Ferreira, Luís D. Carlos, and Helena I. S. Nogueira. "Polynuclear Molybdenum and Tungsten Complexes containing 3-Hydroxypicolinic Acid and Europium (III)." Materials Science Forum 514-516 (May 2006): 1305–12. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.1305.

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Novel polynuclear tungsten and molybdenum (VI) complexes with 3-hydroxypicolinic acid (HpicOH) and europium(III) [M4O12Eu(picOH)3] (M(VI) = W, Mo) were prepared by hydrothermal methods. The solid compounds were characterized by FT-IR and FT-Raman spectroscopy and elemental analysis. The photoluminescent properties of the materials were investigated, showing sensitization of the europium(III) luminescence by both the 3- hydroxypicolinate ligand and the polyoxometalate moiety

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16

Yang, Wei, Qiang Li, Yan Yan Zhang, Dan Yu Jiang, and Jin Feng Xia. "Spectra Analysis of some Europium(III)/Terbium(III) Complexes." Key Engineering Materials 680 (February 2016): 558–61. http://dx.doi.org/10.4028/www.scientific.net/kem.680.558.

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a series of Eu(III)/Tb(III) complexes with а-thenoyl trifluoroacetone (HTTA), 8-hydroxy quinoline complexes were synthesized. The UV and fluorescence spectra of these complexes at room temperature were characterized. The results revealed that different energy transfer between rare earth ions and ligands.Keywords rare earth complexes, ultraviolet spectra, fluorescence spectra

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17

Kitagawa, Yuichi, Ryohsuke Ohno, Takayuki Nakanishi, Koji Fushimi та Yasuchika Hasegawa. "Solvent-dependent dual-luminescence properties of a europium complex with helical π-conjugated ligands". Photochemical & Photobiological Sciences 16, № 5 (2017): 683–89. http://dx.doi.org/10.1039/c7pp00007c.

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A europium(iii) complex with a large π-conjugated helical ligand, tris(hexafluoroacetylacetonato)europium(iii)bis((pentahelicenyl)diphenylphosphine oxide) (Eu(hfa)<sub>3</sub>(HPO)<sub>2</sub>), exhibits dual luminescence excited at the π–π* transition band.

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18

Kanesato, Masatoshi, Keiko Nagahara, and Midori Goto. "Synthesis, Characterization and Emission Properties of a Mixed Metal Complex of Europium (III) and Terbium (III) with a Tripodal Heptadentate Schiff Base Ligand." Advanced Materials Research 463-464 (February 2012): 326–30. http://dx.doi.org/10.4028/www.scientific.net/amr.463-464.326.

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The preparation and characterization of a novel mixed metal complex of europium (III) and terbium (III) of a tripodal heptadentate Schiff-base ligand N [CH2CH2N=CH (2-OH-3-MeC6H3)]3 (H3L1) have been studied. The complex was prepared by the reaction of [EuL1] and [TbL1] in N, N-dimethylformamide. The ratio of europium (III) to terbium (III) in the mixed metal complex was found to be 3 to 7. The molecular structure of [Eu0.3Tb0.7L1] was determined by X-ray crystallography. The crystal structure analysis revealed that the Schiff-base behaves as a tri-deprotonated heptadentate ligand encapsulating

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19

Al Sabea, Hassan, Nadège Hamon, Olivier Galangau, et al. "Efficient luminescence control in dithienylethene functionalized cyclen macrocyclic lanthanide complexes." Inorganic Chemistry Frontiers 7, no. 16 (2020): 2979–89. http://dx.doi.org/10.1039/d0qi00354a.

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We report the synthesis of an original ligand scaffold based on a dimethyl-cyclen platform Medo2pa with two dithienylethene units attached to each picolinate arm and the corresponding yttrium(iii), europium(iii) and ytterbium(iii) complexes.

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20

Allen, Nina Stromgren, Susan C. Jackels, Allen D. Elster, Ron Marrache, and Julia S. Sizemore. "The luminescent probes europium and terbium-DTPA localize in cells and organs and serve as analogues for gadolinium-DTPA." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 3 (1990): 788–89. http://dx.doi.org/10.1017/s0424820100161503.

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The Europium (III) and Terbium (III) complexes of diethylene-triaminepenta-acetate (DTPA) were prepared to be luminescent, histochemical analogues for the recently developed specific paramagnetic resonance contrast agents such as Gadolinium (III)DTPA. Electron probe microanalysis (energy dispersive X-ray spectroscopy) demonstrates that the Eu and Gd-DTPA colocalize in various tissues. Eu, Tb and Gd are closely related as seen in the Periodic Table (Fig. 1). The structures of Eu and Gd-DTPA (Fig. 2) as well as Tb-DTPA are very similar. Fig 3 shows the synthetic path of one of these compounds, N

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21

Tang, Huai Jun, Li Ying Wei, Qian Luo, Xian Wang Shen, and Chang Li Liu. "Effect of 1-(9-Ethyl-9H-carbazol-3-yl)-4,4,4-trifluorobutane-1,3-dione on Properties of Luminescent Europium (III) Complexes." Advanced Materials Research 834-836 (October 2013): 215–20. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.215.

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In order to understand the effect of β-diketone ligands containing carbazole group on luminescent europium (III) complexes, a series of europium (III) complexes (Phen)Eu (DBM)3-nLnwith 1-(9-Ethyl-9H-carbazol-3-yl)-4,4,4-trifluorobutane-1,3-dione (L) were synthesized and investigated contrastively (n = 0, 1, 2, 3; DBM: dibenzoylmethane; Phen: 1,10-phenanthroline). The results show amorphous nature, glass transition temperatures and luminescent intensity can be improved obviously by 1-(9-ethyl-9H-carbazol-3-yl)-4,4,4-trifluorobutane-1,3-dione, at the same time, their thermal decomposition temper

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22

de Andrade, Antônio V. M., Nivan B. da Costa, Oscar L. Malta, Ricardo L. Longo, Alfredo M. Simas, and Gilberto F. de Sá. "Excited state calculations of Europium(III) complexes." Journal of Alloys and Compounds 250, no. 1-2 (1997): 412–16. http://dx.doi.org/10.1016/s0925-8388(96)02560-1.

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23

Yusov, A. B., and A. M. Fedoseev. "Photoluminescence of polymolybdate complexes of europium(III)." Journal of Applied Spectroscopy 47, no. 1 (1987): 683–87. http://dx.doi.org/10.1007/bf00657132.

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24

Maksimova, K. N., N. L. Bazyakina, O. N. Suvorova, and D. Wöhrle. "Europium(iii) phthalocyanine complexes with 8-oxyquinoline." Russian Chemical Bulletin 60, no. 2 (2011): 269–72. http://dx.doi.org/10.1007/s11172-011-0045-7.

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25

Wu, Shuguang, Thomas C. Bedard, and James P. Riehl. "Excited-state chiral discrimination in aqueous solutions of lanthanide(III): 2,6-pyridinedicarboxylate complexes." Collection of Czechoslovak Chemical Communications 56, no. 12 (1991): 3025–27. http://dx.doi.org/10.1135/cccc19913025.

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Addition of resolved-Ru(phenanthroline)32+ to aqueous solutions of racemic complexes of Ln(2,6-pyridinedicarboxylate)33- (where Ln = Eu(III) and Tb(III) results in efficient quenching of lanthanide emission. The terbium complex is quenched more than the europium complex illustrating the importance of electronic overlap. The emission is also circularly polarized indicating that the quenching mechanism is enantioselective. Comparison with previous data allows for the identification of the enantiomer in excess, and, thus, of the favored enantioselective energy transfer pair.

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26

Nakamura, Kazuki, Haruki Minami, Amika Sagara, Natsumi Itamoto, and Norihisa Kobayashi. "Enhanced red emissions of europium(iii) chelates in DNA–CTMA complexes." Journal of Materials Chemistry C 6, no. 16 (2018): 4516–22. http://dx.doi.org/10.1039/c8tc00255j.

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27

Thomsen, Maria Storm, Anders Ø. Madsen, and Thomas Just Sørensen. "Crystal structure and optical properties of a two-sited EuIII compound: an EuIII ion coordinated by two [EuIII(DOTA)]− complexes (DOTA is 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetate)." Acta Crystallographica Section C Structural Chemistry 77, no. 7 (2021): 354–64. http://dx.doi.org/10.1107/s2053229621005647.

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The structure and solid-state luminescence properties of an EuIII compound with two different lanthanide sites, [Eu(μ-O)5(OH)(H2O)2][Eu(DOTA)(H2O)]2 (DOTA is 1,4,7,10-tetrazacyclododecane-1,4,7,10-tetraacetate, C16H24N4O8), were determined. The compound crystallizes in a laminar structure in the triclinic space group P\overline{1}, where the two sites are a free europium(III) ion and an [Eu(DOTA)(H2O)]− complex. The crystal structure was determined using complex data treatment due to nonmerohedral twinning. Experimental data sets were recorded with large redundancy and separated according to s

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Tao, Xiang Dong, Ran Zhan, and Qian Duan. "Synthesis and Property Study of Modified Poly(N-isopropylacrylamide) Containing Eu(III)." Advanced Materials Research 239-242 (May 2011): 2553–57. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.2553.

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Poly(N-isopropylacrylamide)(PNIPAM) with terminal aromatic groups were synthesized by atom transfer radical polymerization (ATRP), using N-isopropylacrylamide as monomer and phenyl 2-chloropropionate, (4’-phenyl)phenyl 2-chloropropionate and (2’,6’-diphenyl)phenyl 2-chloropropionate as initators. Then novel functional complexes of poly(N-isopropylacrylamide) and Eu(III) (PNIPAM-Eu(III)) with thermosensitive and fluorescent properties were synthesized and characterized by X-ray photoelectron spectroscopy (XPS), and fluorescence spectroscopy. Eu(III) was bonded to nitrogen and oxygen atoms in th

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Minyaev, Mikhail E., Alexandr A. Vinogradov, Dmitrii M. Roitershtein, Konstantin A. Lyssenko, Ivan V. Ananyev, and Ilya E. Nifant'ev. "Di- and triphenylacetate complexes of yttrium and europium." Acta Crystallographica Section C Structural Chemistry 72, no. 7 (2016): 578–84. http://dx.doi.org/10.1107/s2053229616009748.

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The significant variety in the crystal structures of rare-earth carboxylate complexes is due to both the large coordination numbers of the rare-earth cations and the ability of the carboxylate anions to form several types of bridges between rare-earth metal atoms. Therefore, these complexes are represented by mono-, di- and polynuclear complexes, and by coordination polymers. The interaction of LnCl3(thf)x(Ln = Eu or Y; thf is tetrahydrofuran) with sodium or diethylammonium diphenylacetate in methanol followed by recrystallization from a DME/THF/hexane solvent mixture (DME is 1,2-dimethoxyetha

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30

Engelhardt, LM, BM Furphy, JM Harrowfield, DL Kepert, AH White, and FR Wilner. "Coordination Chemistry of the Calixarenes. II. Europium(III) and p-t-Butyl Calix[6]arene." Australian Journal of Chemistry 41, no. 9 (1988): 1465. http://dx.doi.org/10.1071/ch9881465.

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The possible nature of p-t-butyl-calix [6] arene complexes of lanthanide elements has been explored by determination of the single-crystal X-ray structure of a complex with a 1:2 europium/ ligand ratio, obtained from dimethylformamide (dmf ≡ Me2NCHO) solution. This complex is formulated as [ Eu (LH4)(Me2NCHO)6(OH)].LH6.~4Me2NCHO (LH6 = p-t-butyl-calix [6] arene) on the basis of the structure determination. Crystals are monoclinic, P21/n, a 36.11(3), b 23.35(2), c 21.85(2)Ǻ, β 97.46(6)°, Z = 4 formula units; R was 0.11 for 8488 'observed' reflections. The complex is remarkable in that the only

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31

Fradgley, Jack D., Matthieu Starck, Michel Laget, et al. "Targeted pH switched europium complexes monitoring receptor internalisation in living cells." Chemical Communications 57, no. 47 (2021): 5814–17. http://dx.doi.org/10.1039/d1cc01029h.

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32

Frawley, Andrew T., Robert Pal, and David Parker. "Very bright, enantiopure europium(iii) complexes allow time-gated chiral contrast imaging." Chemical Communications 52, no. 91 (2016): 13349–52. http://dx.doi.org/10.1039/c6cc07313a.

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33

Chen, Xiao-Feng, Chun-Yin Duan, Xu-Hui Zhu, et al. "Triboluminescence and crystal structures of europium(III) complexes." Materials Chemistry and Physics 72, no. 1 (2001): 11–15. http://dx.doi.org/10.1016/s0254-0584(01)00299-1.

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34

CHEN, Fangfang, Zuqiang BIAN, and Chunhui HUANG. "Progresses in electroluminescence based on europium(III) complexes." Journal of Rare Earths 27, no. 3 (2009): 345–55. http://dx.doi.org/10.1016/s1002-0721(09)00003-9.

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35

Okayasu, Yoshinori, and Junpei Yuasa. "Evaluation of circularly polarized luminescence in a chiral lanthanide ensemble." Molecular Systems Design & Engineering 3, no. 1 (2018): 66–72. http://dx.doi.org/10.1039/c7me00082k.

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36

Sagami, Takuya, Yuhei O. Tahara, Makoto Miyata, Hiroyuki Miyake, and Satoshi Shinoda. "Luminescence sensing of weakly-hydrated anions in aqueous solution by self-assembled europium(iii) complexes." Chemical Communications 53, no. 28 (2017): 3967–70. http://dx.doi.org/10.1039/c7cc00477j.

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37

Gálico, Diogo Alves, Ítalo Odone Mazali, and Fernando Aparecido Sigoli. "A highly sensitive luminescent ratiometric thermometer based on europium(iii) and terbium(iii) benzoylacetonate complexes chemically bonded to ethyldiphenylphosphine oxide functionalized polydimethylsiloxane." New Journal of Chemistry 42, no. 23 (2018): 18541–49. http://dx.doi.org/10.1039/c8nj04489a.

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38

Zade, Anil B., Pawan P. Kalbende, Mayuri S. Umekar, and Gajanan W. Belsare. "Sensitization of Eriochromeazurol-B in Presence of Cetyldimethylethylammonium Bromide for the Microdetermination of Some Lanthanides." E-Journal of Chemistry 9, no. 4 (2012): 2394–406. http://dx.doi.org/10.1155/2012/587240.

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Cetyldimethylethylammonium bromide, a cationic surfactant has been used to decolorize eriochromeazurol B, an anionic triphenylmethane type of dye. Addition of specific lanthanide metal ion to this decolorized solution resulted into intense colored stable ternary complex with large bathochromic shift from 540 nm (binary complex) to 650 nm (ternary complex) with increase in absorbance values at shifted wavelength. CDMEAB thus decreases the color intensity of ECAB and increases the absorbance value of ternary complexes. This two fold advantage resulted into enhancement in molar absorptivities and

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Kanazawa, Kenji, Kazuki Nakamura, and Norihisa Kobayashi. "Electrochemical luminescence modulation in a Eu(iii) complex-modified TiO2electrode." Journal of Materials Chemistry C 3, no. 27 (2015): 7135–42. http://dx.doi.org/10.1039/c4tc02996h.

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40

Li, Wen Xian, Bo Yang Ao, and Jing Zhang. "Fluorescence Enhancement of Europium(III) Perchlorate by 2,2′-Dipyridyl on Bis(benzylsulfinyl)methane Complex." Advanced Materials Research 634-638 (January 2013): 2462–65. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.2462.

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A novel ligand with double sulfinyl groups, bis(benzylsulfinyl)methane L, was synthesized by a new method. Its novel ternary complex, has been synthesized [using L as the first ligand, and dipyridyl L' as the second ligand]. In order to study the effect of the second ligand on the fluorescence properties of rare-earth sulfoxide complex, a novel binary europium complex has been synthesized. Photoluminescent measurement showed that the first ligand L could efficiently transfer the energy to Eu (III) ions in the complex. Furthermore, the detailed luminescence analyses on the rare earth complexes

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41

Stubenrauch, Jan A., Christian Mevissen, Marie F. Schulte, Steffen Bochenek, Markus Albrecht, and Palani S. Subramanian. "Highly specific “sensing” of tryptophan by a luminescent europium(III) complex." Zeitschrift für Naturforschung B 71, no. 10 (2016): 1025–28. http://dx.doi.org/10.1515/znb-2016-0096.

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AbstractThe europium(III) complex 1-Cl3 (S,S-2,2′-(((1,10-phenanthroline-2,9-diyl)bis(methanylylidene))bis(azanylylidene))bis(3-methylbutanamide)europiumtrichloride) undergoes, only in the presence of the amino acid tryptophan, a change of emission at 615 nm. In the presence of few equivalents of tryptophan, emission of the europium complex is enhanced while it disappears upon addition of large amounts. This behavior can be assigned to displacement of the sensitizing phenanthroline ligand of 1-Cl2•Trp in the latter case.

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Camargo, Maryene A., Ademir Neves, Adailton J. Bortoluzzi, et al. "Efficient Phosphodiester Hydrolysis by Luminescent Terbium(III) and Europium(III) Complexes." Inorganic Chemistry 49, no. 13 (2010): 6013–25. http://dx.doi.org/10.1021/ic100549u.

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43

Zairov, R. R., N. А. Shamsutdinova, А. N. Fattakhova, et al. "Nanoparticles based on gadolinium(iii) and europium(iii) complexes for biovisualization." Russian Chemical Bulletin 65, no. 5 (2016): 1325–31. http://dx.doi.org/10.1007/s11172-016-1456-2.

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44

Tigaa, Rodney A., Raul E. Ortega, Xinsong Lin, and Geoffrey F. Strouse. "A Versatile Tripodal Ligand for Sensitizing Lanthanide (LnIII) Ions and Color Tuning." Chemistry 3, no. 1 (2021): 138–45. http://dx.doi.org/10.3390/chemistry3010011.

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Lanthanide (LnIII) ions were successfully chelated and sensitized with a tripodal ligand. The absolute LnIII-centered emission efficiencies were ~3% for both the europium(III) (EuIII) and terbium (TbIII) complexes and up to 54% for the cerium(III) (CeIII) complex. The differences in emission quantum yields for the early lanthanides (CeIII) and the mid lanthanides (EuIII and TbIII) were attributed to their d–f and f–f nature, respectively. Despite the low quantum yield of the EuIII complex, the combination of the residual ligand fluorescence and the red EuIII emission resulted in a bluish-white

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45

Zhu, Jin Liang, Sheng Li Liu, Liang Cai Yu, and Tao Ouyang. "Synthesis, Characterization and Luminescence of Europium, Terbium Complexes of 1,1'-(Pyridin-2,6-Diyl) Bis-3-P-Tolylpropane-1,3-Dione." Advanced Materials Research 306-307 (August 2011): 228–33. http://dx.doi.org/10.4028/www.scientific.net/amr.306-307.228.

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A new ligand, 1,1'-(pyridin-2,6-diyl)bis-3-p-tolylpropane-1,3-dione(H2L), was prepared and its crystal structure displays its enol isomer. The binary complex, Ln2L3·4H2O [Ln = Eu(III) and Tb(III)], were synthesized by the reaction of synthesized ligand (H2L) and Ln(III). With 1,10-phenanthroline (Phen) as the synergistic ligand, the ternary complex, Ln2L3(Phen)2 [Ln = Eu(III) and Tb(III)], were synthesized. The compounds were characterized by 1H-NMR spectroscopy, MS, IR, UV, DTA-TG and fluorescence spectrum. The luminescent properties of the ligand and its complexes were investigated and the r

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46

Gerile, Naren, H. Alata, Tian Xiao, Ta Na Bao, and Ojin Tegus. "Preparation and Characterization of Stable Molecular Glasses of Europium(III) Acyl-Alaninate Complexes." Solid State Phenomena 271 (January 2018): 34–39. http://dx.doi.org/10.4028/www.scientific.net/ssp.271.34.

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Working with acylaminocarboxylate ligands, we used ethanol and water as a solvent, and the europium complexes were prepared using a chemical reaction method in solution. The elements were analyzed and characterized by polarizing microscope and XRD, respectively. The surfaces of complexes in the solid state were observed by polarizing microscope morphology. XRD diffraction data confirms the periodic long range order/disorder structure of these europium complexes. We also found that diversified material was easily formed by the rare earth complexes. Using the above tests, the structural informat

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Di Pietro, Sebastiano, Dalila Iacopini, Aldo Moscardini, et al. "New Coumarin Dipicolinate Europium Complexes with a Rich Chemical Speciation and Tunable Luminescence." Molecules 26, no. 5 (2021): 1265. http://dx.doi.org/10.3390/molecules26051265.

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Europium (III) luminescent chelates possess intrinsic photophysical properties that are extremely useful in a wide range of applications. The lack of examples of coumarin-based lanthanide complexes is mainly due to poor photo-sensitization attempts. However, with the appeal of using such a versatile scaffold as antenna, especially in the development of responsive molecular probes, it is worth the effort to research new structural motifs. In this work, we present a series of two new tris coumarin-dipicolinate europium (III) complexes, specifically tailored to be either a mono or a dual emitter,

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Iovu, Mihail S., Victor I. Verlan, Ion P. Culeac та ін. "COORDINATION COMPLEX [Eu(μ 2 -OC 2 H 5 )(btfa)(NO 3 ) (phen)] 2 ·phen WITH HIGH LUMINESCENT EFFICIENCY". Moldavian Journal of the Physical Sciences 20, № 1 (2021): 73–83. http://dx.doi.org/10.53081/mjps.2021.20-1.06.

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Experimental results on the bis[(μ 2 -etoxi)(benzoyl trifluoroacetonato)(nitrato)(1,10- phenantroline)europium(III)]1,10-phenantroline europium(III) coordination complex (hereafter, [Eu(μ 2 -OC 2 H 5 )(btfa)(NO 3 )(phen)] 2 ·phen) are described. The complex is characterized by photoluminescence (PL) and infrared spectroscopy. Photoluminescence spectra of the complex exhibit strong emission with specific narrow emission bands associated with the 5 D 0 → 7 F j (j = 0–4) transitions. The pattern of emission band splitting and the luminescence time decay suggest the presence of at least two differ

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Gavriluta, Anatolie, Thomas Fix, Aline Nonat, Abdelilah Slaoui, Jean-François Guillemoles, and Loïc J. Charbonnière. "Tuning the chemical properties of europium complexes as downshifting agents for copper indium gallium selenide solar cells." Journal of Materials Chemistry A 5, no. 27 (2017): 14031–40. http://dx.doi.org/10.1039/c7ta02892j.

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Ekberg, Christian, Elin Löfström-Engdahl, Emma Aneheim, et al. "The structures of CyMe4-BTBP complexes of americium(iii) and europium(iii) in solvents used in solvent extraction, explaining their separation properties." Dalton Transactions 44, no. 42 (2015): 18395–402. http://dx.doi.org/10.1039/c5dt02859k.

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