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Ali A, Ahmed Z, Rahisuddin, Iftikhar K. Pure red-light emitting europium based complexes as efficient UV light converters: synthesis, crystal structure and photoluminescence properties. Dalton Trans 2023; 52:14075-14087. [PMID: 37743694 DOI: 10.1039/d3dt01536j] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
This paper reports three new crystallographically characterized europium complexes with composition as follows: [Eu(fod)3(L1)] (1), [Eu(fod)3(L2)] (2) and [Eu(fod)3(L3)] (3) {L1 = benzimidazole (bzi), L2 = 4,7-diphenyl-1,10-phenanthroline (bath), L3 = 2-(2-pyridyl) benzimidazole (py-im) and fod = anion of 6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedione (Hfod)}. The single crystal (SC) XRD analysis shows that complex 1 is seven-coordinated while complexes 2 and 3 are eight-coordinated with the geometrical structures of a mono-capped octahedron and a trigonal dodecahedron, respectively. The NMR spectra of the complexes validate the SC-XRD results in solution. The complexes are stable in solution as no dissociation of any ligand was observed in the NMR spectra of the complexes. The photophysical properties of the complexes in solution, solid state, and PMMA thin films were studied. The hypersensitive transition 5D0 → 7F2 dominates the emission spectra in all phases, showing the highly asymmetric environment around the Eu(III) ion. The bath ligand is found to be the best sensitizer of the Eu ion and hence complex 2 shows the strongest luminescence properties with the highest absolute quantum yield among the three complexes. The CIE coordinate analysis shows that pure red-luminescence is emitted by the Eu complexes in the solid state since the coordinates found in this phase are closer to the standard NTSC 1987 values. The optical band gaps were determined for the complexes and the observed values suggest that the complexes can have possible applications in the field of semiconductor materials.
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Affiliation(s)
- Asgar Ali
- Lanthanide Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India.
| | - Zubair Ahmed
- Lanthanide Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India.
- Department of Chemistry, School of Basic and Applied Sciences, Galgotias University, Greater Noida, India
| | - Rahisuddin
- Lanthanide Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India.
| | - K Iftikhar
- Lanthanide Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India.
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Deep red emissive octacoordinated heteroleptic Sm(III) complexes: Preparation and spectroscopic investigation. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132848] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Dalal A, Nehra K, Hooda A, Singh D, Dhankhar J, Kumar S. Fluorinated β-diketone-based Sm(III) complexes: spectroscopic and optoelectronic characteristics. LUMINESCENCE 2022; 37:1328-1334. [PMID: 35641133 DOI: 10.1002/bio.4300] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 05/05/2022] [Accepted: 05/25/2022] [Indexed: 12/19/2022]
Abstract
The synthesis and characterization of a series of octa-coordinated Sm(III) complexes with 4,4,4-trifluoro-1-(2-naphthyl)-1,3-butanedione (TFNB) and 2,2'-bipyridine (Bpy) derivatives as ancillary ligand are described here. The complexes were analyzed by elemental, spectroscopic such as infrared spectroscopy, 1 H NMR, and thermogravimetric analyses. The fluorinated TFNB ligand absorbs in the range from 200 to 400 nm. The complexes show the sharp and structured Sm-based emissions in visible region upon irradiation in UV range. Excitation spectra of complexes show similarity to the absorption spectra of ligands suggesting that excitation energy is transferred from ligands to Sm(III) centre by the antenna effect. Photoluminescence emission spectra and colour parameters affirmed that the complexes show luminescence in orange-red region. These luminous Sm(III) complexes might be applied as emissive layer in organic electroluminescent devices.
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Affiliation(s)
- Anuj Dalal
- Department of Chemistry, Maharshi Dayanand University, Rohtak, India
| | - Kapeesha Nehra
- Department of Chemistry, Maharshi Dayanand University, Rohtak, India
| | - Anjli Hooda
- Department of Chemistry, Maharshi Dayanand University, Rohtak, India
| | - Devender Singh
- Department of Chemistry, Maharshi Dayanand University, Rohtak, India
| | - Jyotika Dhankhar
- Department of Food Technology, Maharshi Dayanand University, Rohtak, India
| | - Sumit Kumar
- Department of Chemistry, DCR University of Science & Technology, Murthal, Haryana, India
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5
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Rizzo G, Blasi D, Ragni R, Farinola GM. New insights in luminescent fluorinated transition metal compounds. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2022. [DOI: 10.1016/bs.adomc.2022.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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6
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Ganaie A, Iftikhar K. Theoretical Modeling (Sparkle RM1 and PM7) and Crystal Structures of the Luminescent Dinuclear Sm(III) and Eu(III) Complexes of 6,6,7,7,8,8,8- Heptafluoro-2,2-dimethyl-3,5-octanedione and 2,3-Bis(2-pyridyl)pyrazine: Determination of Individual Spectroscopic Parameters for Two Unique Eu 3+ Sites. ACS OMEGA 2021; 6:21207-21226. [PMID: 34471726 PMCID: PMC8387994 DOI: 10.1021/acsomega.0c05976] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 06/14/2021] [Indexed: 06/13/2023]
Abstract
Heteroleptic homo dinuclear complexes [Sm(fod)3(μ-bpp)Sm(fod)3] and [Eu(fod)3(μ-bpp)Eu(fod)3] and their diamagnetic analogue [Lu(fod)3(μ-bpp)Lu(fod)3] (fod is the anion of 6,6,7,7,8,8,8- heptafluoro-2,2-dimethyl-3,5-octanedione (Hfod) and bpp is 2,3-bis(2-pyridyl)pyrazine) are synthesized and thoroughly characterized. The lanthanum gave a 1:1 adduct of La(fod)3 and bpp with the molecular formula of [La(fod)3bpp]. The 1H NMR and 1H-1H COSY spectra of the complexes were used to assign the proton resonances. In the case of paramagnetic Sm3+ and Eu3+ complexes, the methine (of the fod moiety) and the bpp resonances are shifted in the opposite direction and the paramagnetic shifts are dipolar in nature, which decrease with increasing distance of the proton from the metal ion. The single-crystal X-ray analyses reveal that the complexes (Sm3+ and Eu3+) are dinuclear and crystallize in the triclinic P1 space group. Each metal in a given complex is eight coordinate by coordinating with six oxygen atoms of three fod moieties and two nitrogen atoms of the bpp. Of the two metal centers, in a given complex, one has a distorted square antiprism arrangement and the other acquires a distorted dodecahedron geometry. The Sparkle RM1 and PM7 optimized structures of the complexes are also presented and compared with the crystal structure. Theoretically observed bond distances are in excellent agreement with the experimental values, and the RMS deviations for the optimized structures are 2.878, 2.217, 2.564, and 2.675 Å. The photophysical properties of Sm3+ and Eu3+ complexes are investigated in different solvents, solid, and PMMA-doped thin hybrid films. The spectroscopic parameters (the Judd-Ofelt intensity parameters, radiative parameters, and intrinsic quantum yield) of each Eu3+ sites are calculated using the overlap polyhedra method. The theoretically obtained parameters are close to the experimental results. The lifetime of the excited state is 38.74 μs for Sm3+ and 713.62 μs for the Eu3+ complex in the solid state.
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Barakat A, El‐Faham A, Haukka M, Al‐Majid AM, Soliman SM. s
‐Triazine pincer ligands: Synthesis of their metal complexes, coordination behavior, and applications. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6317] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Assem Barakat
- Department of Chemistry, College of Science King Saud University PO Box 2455 Riyadh 11451 Saudi Arabia
- Department of Chemistry, Faculty of Science Alexandria University PO Box 426, Ibrahimia Alexandria 21321 Egypt
| | - Ayman El‐Faham
- Department of Chemistry, College of Science King Saud University PO Box 2455 Riyadh 11451 Saudi Arabia
- Department of Chemistry, Faculty of Science Alexandria University PO Box 426, Ibrahimia Alexandria 21321 Egypt
| | - Matti Haukka
- Department of Chemistry University of Jyväskylä PO Box 35 Jyväskylä FI‐40014 Finland
| | | | - Saied M. Soliman
- Department of Chemistry, Faculty of Science Alexandria University PO Box 426, Ibrahimia Alexandria 21321 Egypt
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Bryleva YA, Artem’ev AV, Glinskaya LA, Rakhmanova MI, Samsonenko DG, Komarov VY, Rogovoy MI, Davydova MP. Bright photo- and triboluminescence of centrosymmetric Eu( iii) and Tb( iii) complexes with phosphine oxides containing azaheterocycles. NEW J CHEM 2021. [DOI: 10.1039/d1nj02441h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Novel mononuclear Eu(iii) and Tb(iii) complexes based on phosphine oxides bearing pyridine, pyrimidine or pyrazine moieties show bright photo- and triboluminescence under ambient conditions.
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Affiliation(s)
- Yuliya A. Bryleva
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of the Russian Academy of Sciences
- Novosibirsk 630090
- Russian Federation
| | - Alexander V. Artem’ev
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of the Russian Academy of Sciences
- Novosibirsk 630090
- Russian Federation
| | - Ludmila A. Glinskaya
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of the Russian Academy of Sciences
- Novosibirsk 630090
- Russian Federation
| | - Mariana I. Rakhmanova
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of the Russian Academy of Sciences
- Novosibirsk 630090
- Russian Federation
| | - Denis G. Samsonenko
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of the Russian Academy of Sciences
- Novosibirsk 630090
- Russian Federation
| | - Vladislav Yu. Komarov
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of the Russian Academy of Sciences
- Novosibirsk 630090
- Russian Federation
| | - Maxim I. Rogovoy
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of the Russian Academy of Sciences
- Novosibirsk 630090
- Russian Federation
| | - Maria P. Davydova
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of the Russian Academy of Sciences
- Novosibirsk 630090
- Russian Federation
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Song H, Fan C, Wang R, Wang Z, Pu S. 1,10-Phenanthroline decorated with substituent groups forming europium(III) complexes: synthesis, crystal structure, photoluminescence properties and their bioimaging in living cells. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1824065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Huimin Song
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang, 330013, PR China
| | - Congbin Fan
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang, 330013, PR China
| | - Renjie Wang
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang, 330013, PR China
| | - Zheng Wang
- Lehn Institute of Functional materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Shouzhi Pu
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang, 330013, PR China
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Li ZY, Liu E, Liu XJ, Jian FF. Crystal structure of diisopropyl 2,5-dihydroxycyclohexa-1,4-diene-1,4-dicarboxylate, C 14H 20O 6. Z KRIST-NEW CRYST ST 2020. [DOI: 10.1515/ncrs-2019-0895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C14H20O6, triclinic, P1̄ (no. 2), a = 6.4270(13) Å, b = 8.3458(17) Å, c = 8.4120(17) Å, α = 107.08(3)°, β = 106.43(3)°, γ = 107.37(3)°, V = 376.2(2) Å3, Z = 1, R
gt(F) = 0.0521, wR
ref(F
2) = 0.1541, T = 294.0 K.
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Affiliation(s)
- Zhuang-Yu Li
- School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology , Luoyang, Henan 471003 , P.R. China
| | - E. Liu
- School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology , Luoyang Hekeda Recycling Energy Co. LTD. , Luoyang, Henan 471003 , P.R. China
| | - Xiao-Jing Liu
- School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology , Luoyang, Henan 471003 , P.R. China
| | - Fang-Fang Jian
- School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology , Luoyang Hekeda Recycling Energy Co. LTD. , Luoyang, Henan 471003 , P.R. China
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Li ZY, Liu E, Liu XJ, Jian FF. Crystal structure of diisobutyl 2,5-dihydroxycyclohexa-1,4-diene-1,4-dicarboxylate, C 16H 24O 6. Z KRIST-NEW CRYST ST 2020. [DOI: 10.1515/ncrs-2019-0891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C16H24O6, triclinic, P1̄ (no. 2), a = 6.3410(13) Å, b = 7.3430(15) Å, c = 10.241(2) Å, α = 94.06(3)°, β = 103.89(3)°, γ = 113.13(3)°, V = 418.3(8) Å3, Z = 1, R
gt(F) = 0.0546, wR
ref(F
2) = 0.1691, T = 295(3) K.
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Affiliation(s)
- Zhuang-Yu Li
- School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology , Luoyang Hekeda Recycling Energy Co. LTD. , Luoyang, Henan 471003 , P.R. China
| | - E. Liu
- School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology , Luoyang Hekeda Recycling Energy Co. LTD. , Luoyang, Henan 471003 , P.R. China
| | - Xiao-Jing Liu
- School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology , Luoyang Hekeda Recycling Energy Co. LTD. , Luoyang, Henan 471003 , P.R. China
| | - Fang-Fang Jian
- School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology , Luoyang Hekeda Recycling Energy Co. LTD. , Luoyang, Henan 471003 , P.R. China
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