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Shimoji H, Aoyama Y, Inage K, Nakamura M, Yanagihara T, Yuhara K, Kitagawa Y, Hasegawa Y, Ito S, Tanaka K, Imoto H, Naka K. Highly Efficient and Thermally Durable Luminescence of 1D Eu 3+ Coordination Polymers with Arsenic Bridging Ligands. Chemistry 2024; 30:e202400615. [PMID: 38591237 DOI: 10.1002/chem.202400615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 04/08/2024] [Accepted: 04/08/2024] [Indexed: 04/10/2024]
Abstract
In this work, bisarsine oxides were evaluated as novel bridging ligands, aiming to develop practical and efficient luminescent lanthanide coordination polymers. We have synthesized one-dimensional (1D) Eu3+ coordination polymers that incorporate bisarsine oxide bridging ligands and hexafluoroacetylacetonate anions. These polymers exhibited a denser packing of chains compared to analogous polymers bridged with bisphosphine oxides. The coordination polymers demonstrated exceptional thermal stability and substantial emission quantum yields. Additionally, the bisarsine oxides induced a pronounced polarization effect, facilitating a sensitive electric dipole transition that yields considerably narrow band red emission. Remarkably, the Eu3+ coordination polymers with bisarsine oxides maintained intense emission even at 550 K. A distinctive feature of these polymers is their heating-induced emission enhancement observed when the temperature was increased from 300 K to 400 K.
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Affiliation(s)
- Haruki Shimoji
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Yuto Aoyama
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Kota Inage
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Masashi Nakamura
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Takumi Yanagihara
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Kazuhiro Yuhara
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Yuichi Kitagawa
- Faculty of Engineering, Hokkaido University, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido, 001-0021, Japan
| | - Yasuchika Hasegawa
- Faculty of Engineering, Hokkaido University, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido, 001-0021, Japan
| | - Shunichiro Ito
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
- FOREST, JST, Honcho 4-1-8, Kawaguchi, Saitama, 332-0012, Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
- Materials Innovation Lab, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
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2
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Inage K, Wang M, Hasegawa Y, Kitagawa Y. Effective photosensitized emission of a Tb(III) complex using a β-diketonate photosensitizer and an oxygen barrier system in a thermally populated triplet state. Dalton Trans 2024; 53:8555-8562. [PMID: 38567493 DOI: 10.1039/d4dt00286e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Photosensitizer design of luminescent terbium (Tb(III)) complexes with narrow bandwidths is important for advancing luminescent materials. In this study, we report an effective photosensitizer model in a thermally populated lowest excited triplet (T1) state during Tb(III) emission. The Tb(III) complex comprises a Tb(III) ion (serving as an emission center), hexafluoroacetylacetonates (acting as photosensitizer ligands), and bulky cyclohexyl group-attached phosphine-oxide-type ligands (functioning as an oxygen barrier system). Emission properties including emission and excitation spectra, ligand-excited emission quantum yields, and emission lifetimes were evaluated in the absence and presence of oxygen. Coordination geometry structures were determined through analysing single-crystal structures. The electronic structure based on 4f-orbitals was estimated from radiative rate constants and quantum chemical calculations. The bulky phosphine oxide ligand not only provides an oxygen barrier system but also induces an electronic structural modulation based on 4f-orbitals, allowing for effective photosensitized Tb(III) emission in a thermally populated ligand T1 state in air.
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Affiliation(s)
- Kota Inage
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Mengfei Wang
- Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan.
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo 001-0021, Japan
| | - Yasuchika Hasegawa
- Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan.
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo 001-0021, Japan
| | - Yuichi Kitagawa
- Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan.
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo 001-0021, Japan
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3
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Félix G, Kulakova AN, Sene S, Khrustalev VN, Hernández-Rodríguez MA, Shubina ES, Pelluau T, Carlos LD, Guari Y, Carneiro Neto AN, Bilyachenko AN, Larionova J. Luminescent Ln 3+-based silsesquioxanes with a β-diketonate antenna ligand: toward the design of efficient temperature sensors. Front Chem 2024; 12:1379587. [PMID: 38633984 PMCID: PMC11022212 DOI: 10.3389/fchem.2024.1379587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 03/07/2024] [Indexed: 04/19/2024] Open
Abstract
We report the synthesis and single-crystal X-ray diffraction, magnetic, and luminescence measurements of a novel family of luminescent cage-like tetranuclear silsesquioxanes (PhSiO1.5)8(LnO1.5)4(O)(C5H8O2)6(EtOH)2(CH3CN)2⋅2CH3CN (where Ln = Tb, 1; Tb/Eu, 2; and Gd, 3), featuring seven-coordinated lanthanide ions arranged in a one-capped trigonal prism geometry. Compounds 1 and 2 exhibit characteristic Tb3+ and Tb3+/Eu3+-related emissions, respectively, sensitized by the chelating antenna acetylacetonate (acac) ligands upon excitation in the UV and visible spectral regions. Compound 3 is used to assess the energies of the triplet states of the acac ligand. For compound 1, theoretical calculations on the intramolecular energy transfer and multiphonon rates indicate a thermal balance between the 5D4 Stark components, while the mixed Tb3+/Eu3+ analog 2, with a Tb:Eu ratio of 3:1, showcases intra-cluster Tb3+-to-Eu3+ energy transfer, calculated theoretically as a function of temperature. By utilizing the intensity ratio between the 5D4→7F5 (Tb3+) and 5D0→7F2 (Eu3+) transitions in the range 11-373 K, we demonstrate the realization of a ratiometric luminescent thermometer with compound 2, operating in the range 11-373 K with a maximum relative sensitivity of 2.0% K-1 at 373 K. These findings highlight the potential of cage-like silsesquioxanes as versatile materials for optical sensing-enabled applications.
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Affiliation(s)
- Gautier Félix
- CNRS, ENSCM, University Montpellier, Montpellier, France
| | - Alena N Kulakova
- CNRS, ENSCM, University Montpellier, Montpellier, France
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia
| | - Saad Sene
- CNRS, ENSCM, University Montpellier, Montpellier, France
| | - Victor N Khrustalev
- Peoples' Friendship University of Russia (RUDN University), Moscow, Russia
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Miguel A Hernández-Rodríguez
- Phantom-g, Physics Department and CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
- Departamento de Física, Universidad de La Laguna San Cristóbal de La Laguna, Santa Cruz de Tenerife, Spain
| | - Elena S Shubina
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia
| | | | - Luís D Carlos
- Phantom-g, Physics Department and CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Yannick Guari
- CNRS, ENSCM, University Montpellier, Montpellier, France
| | - Albano N Carneiro Neto
- Phantom-g, Physics Department and CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Alexey N Bilyachenko
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia
- Peoples' Friendship University of Russia (RUDN University), Moscow, Russia
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4
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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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5
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Ohkubo T, Komiyama N, Masu H, Kishikawa K, Kohri M. Molecular Dynamics Studies of the Ho(III) Aqua-tris(dibenzoylmethane) Complex: Role of Water Dynamics. Inorg Chem 2023. [PMID: 37470095 DOI: 10.1021/acs.inorgchem.3c01277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
The seven-coordinate Ho(III) aqua-tris(dibenzoylmethane)(DBM) complex, referred to as Ho-(DBM)3·H2O, was first reported in the late 1960s. It has a threefold symmetric structure, with Ho at the center of three dibenzoylmethane ligands and hydrogen-bonded water to ligands. It is considered that the hydrogen bonds between the water molecule and the ligands surrounding Ho play an important role in the formation of its symmetrical structure. In this work, we developed new force-field parameters for classical molecular dynamics (CMD) simulations to theoretically elucidate the structure and dynamics of Ho-(DBM)3·H2O. To develop the force field, structural optimization and molecular dynamics were performed on the basis of ab initio calculations using the plane-wave pseudopotential method. The force-field parameters for CMD were then optimized to reproduce the data obtained from ab initio calculations. Validation of the developed force field showed good agreement with the experimental crystalline structure and ab initio data. The vibrational properties of water in Ho-(DBM)3·H2O were investigated by comparison with bulk liquid water. The vibrational motion of water was found to have a characteristic mode originating from stationary rotational motion along the c-axis of Ho(III) aqua-tris(dibenzoylmethane). Contrary to expectations, the hydrogen-bond dynamics of water in Ho-(DBM)3·H2O were found to be almost equivalent to those of bulk liquid water except for librational motion. This development route for force-field parameters for CMD and the establishment of water dynamics can advance the understanding of water-coordinated metal complexes with high coordination numbers such as Ho-(DBM)3·H2O.
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Affiliation(s)
- Takahiro Ohkubo
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho Inage-ku, Chiba 263-8522, Japan
| | - Nao Komiyama
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho Inage-ku, Chiba 263-8522, Japan
| | - Hyuma Masu
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho Inage-ku, Chiba 263-8522, Japan
| | - Keiki Kishikawa
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho Inage-ku, Chiba 263-8522, Japan
| | - Michinari Kohri
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho Inage-ku, Chiba 263-8522, Japan
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6
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Kitagawa Y, Shima K, Nakai T, Kumagai M, Omagari S, Ferreira da Rosa PP, Shoji S, Fushimi K, Hasegawa Y. Thermally-assisted photosensitized emission in a trivalent terbium complex. Commun Chem 2023; 6:122. [PMID: 37349551 DOI: 10.1038/s42004-023-00922-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 06/05/2023] [Indexed: 06/24/2023] Open
Abstract
Luminescent lanthanide complexes containing effective photosensitizers are promising materials for use in displays and sensors. The photosensitizer design strategy has been studied for developing the lanthanide-based luminophores. Herein, we demonstrate a photosensitizer design using dinuclear luminescent lanthanide complex, which exhibits thermally-assisted photosensitized emission. The lanthanide complex comprised Tb(III) ions, six tetramethylheptanedionates, and phosphine oxide bridge containing a phenanthrene frameworks. The phenanthrene ligand and Tb(III) ions are the energy donor (photosensitizer) and acceptor (emission center) parts, respectively. The energy-donating level of the ligand (lowest excited triplet (T1) level = 19,850 cm-1) is lower than the emitting level of the Tb(III) ion (5D4 level = 20,500 cm-1). The long-lived T1 state of the energy-donating ligands promoted an efficient thermally-assisted photosensitized emission of the Tb(III) acceptor (5D4 level), resulting in a pure-green colored emission with a high photosensitized emission quantum yield (73%).
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Affiliation(s)
- Yuichi Kitagawa
- Faculty of Engineering, Hokkaido University, N13W8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, N21W10, Sapporo, Hokkaido, 001-0021, Japan.
| | - Kaori Shima
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, N13W8, Sapporo, Hokkaido, 060-8628, Japan
| | - Takuma Nakai
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, N13W8, Sapporo, Hokkaido, 060-8628, Japan
| | - Marina Kumagai
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, N13W8, Sapporo, Hokkaido, 060-8628, Japan
| | - Shun Omagari
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Ookayama 2-12-1-S8-44, Meguro-ku, Tokyo, 152-8552, Japan
| | - Pedro Paulo Ferreira da Rosa
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, N13W8, Sapporo, Hokkaido, 060-8628, Japan
| | - Sunao Shoji
- Faculty of Engineering, Hokkaido University, N13W8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, N21W10, Sapporo, Hokkaido, 001-0021, Japan
- Department of Engineering, Nara Women's University, Kitauoya Nishimachi, Nara, 630-8506, Japan
| | - Koji Fushimi
- Faculty of Engineering, Hokkaido University, N13W8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, N21W10, Sapporo, Hokkaido, 001-0021, Japan
| | - Yasuchika Hasegawa
- Faculty of Engineering, Hokkaido University, N13W8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, N21W10, Sapporo, Hokkaido, 001-0021, Japan.
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Smirnova KA, Edilova YO, Kiskin MA, Bogomyakov AS, Kudyakova YS, Valova MS, Romanenko GV, Slepukhin PA, Saloutin VI, Bazhin DN. Perfluoroalkyl Chain Length Effect on Crystal Packing and [LnO 8] Coordination Geometry in Lanthanide-Lithium β-Diketonates: Luminescence and Single-Ion Magnet Behavior. Int J Mol Sci 2023; 24:ijms24119778. [PMID: 37298728 DOI: 10.3390/ijms24119778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/31/2023] [Accepted: 06/03/2023] [Indexed: 06/12/2023] Open
Abstract
Functionalized perfluoroalkyl lithium β-diketonates (LiL) react with lanthanide(III) salts (Ln = Eu, Gd, Tb, Dy) in methanol to give heterobimetallic Ln-Li complexes of general formula [(LnL3)(LiL)(MeOH)]. The length of fluoroalkyl substituent in ligand was found to affect the crystal packing of complexes. Photoluminescent and magnetic properties of heterobimetallic β-diketonates in the solid state are reported. The effect of the geometry of the [LnO8] coordination environment of heterometallic β-diketonates on the luminescent properties (quantum yields, phosphorescence lifetimes for Eu, Tb, Dy complexes) and single-ion magnet behavior (Ueff for Dy complexes) is revealed.
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Affiliation(s)
- Kristina A Smirnova
- International Tomography Center, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Yulia O Edilova
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 620137 Yekaterinburg, Russia
| | - Mikhail A Kiskin
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Artem S Bogomyakov
- International Tomography Center, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Yulia S Kudyakova
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 620137 Yekaterinburg, Russia
| | - Marina S Valova
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 620137 Yekaterinburg, Russia
| | - Galina V Romanenko
- International Tomography Center, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Pavel A Slepukhin
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 620137 Yekaterinburg, Russia
| | - Victor I Saloutin
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 620137 Yekaterinburg, Russia
| | - Denis N Bazhin
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 620137 Yekaterinburg, Russia
- Department of Organic and Biomolecular Chemistry, Ural Federal University Named after the First President of Russia B.N. Eltsin, 620002 Ekaterinburg, Russia
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Ahmed Z, Carvalho RDS, Dos Santos AM, Gambassi F, Bandini E, Marvelli L, Maini L, Barbieri A, Cremona M. Highly Luminescent Europium(III) Complexes in Solution and PMMA-Doped Films for Bright Red Electroluminescent Devices. Molecules 2023; 28:molecules28114371. [PMID: 37298847 DOI: 10.3390/molecules28114371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 05/19/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
This paper reports the synthesis, structure, photophysical, and optoelectronic properties of five eight-coordinate Europium(III) ternary complexes, namely, [Eu(hth)3(L)2], bearing 4,4,5,5,6,6,6-heptafluoro-1-(2-thienyl)-1,3-hexanedione (hth) as a sensitizer and L = H2O (1), dpso (diphenyl sulphoxide, 2), dpsoCH3 (4,4'-dimethyl diphenyl sulfoxide, 3), dpsoCl (bis(4-chlorophenyl)sulphoxide, 4), and tppo (triphenylphosphine oxide, 5) as co-ligands. The NMR and the crystal structure analysis confirmed the eight-coordinate structures of the complexes in solution and in a solid state. Upon UV-excitation on the absorption band of the β-diketonate ligand hth, all complexes showed the characteristic bright red luminescence of the Europium ion. The tppo derivative (5) displayed the highest quantum yield (up to 66%). As a result, an organic light-emitting device, OLED, was fabricated with a multi-layered structure-ITO/MoO3/mCP/SF3PO:[complex 5] (10%)/TPBi:[complex 5] (10%)/TmPyPB/LiF/Al-using complex 5 as the emitting component.
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Affiliation(s)
- Zubair Ahmed
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF), Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Rafael Dos Santos Carvalho
- Departamento de Física, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Gávea, Rua Marques São Vicente 225, Rio de Janeiro 22451-900, Brazil
| | - Aline Magalhães Dos Santos
- Departamento de Física, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Gávea, Rua Marques São Vicente 225, Rio de Janeiro 22451-900, Brazil
| | - Francesca Gambassi
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF), Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Elisa Bandini
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF), Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Lorenza Marvelli
- Dipartimento di Scienze Chimiche Farmaceutiche ed Agrarie, Università Degli Studi di Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy
| | - Lucia Maini
- Dipartimento di Chimica "Giacomo Ciamician", Università Degli Studi di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Andrea Barbieri
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF), Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Marco Cremona
- Departamento de Física, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Gávea, Rua Marques São Vicente 225, Rio de Janeiro 22451-900, Brazil
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9
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Kariaka NS, Lipa A, Carneiro Neto AN, Malta OL, Gawryszewska P, Amirkhanov VM. Eu 3+ and Tb 3+ coordination compounds with phenyl-containing carbacylamidophosphates: comparison with selected Ln 3+ β-diketonates. Front Chem 2023; 11:1188314. [PMID: 37255543 PMCID: PMC10225609 DOI: 10.3389/fchem.2023.1188314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 05/03/2023] [Indexed: 06/01/2023] Open
Abstract
Materials based on Eu3+ and Tb3+ coordination compounds are of great interest due to their strong red and green luminescence. Appropriate selection of ligands plays a huge role in optimizing their photophysical properties. Another very helpful instrument for such optimization is theoretical modelling, which permits the prediction of the emissive properties of materials through intramolecular energy transfer analysis. The ligands that allow for achieving high efficiency of Eu3+ and Tb3+ emissions include carbacylamidophosphates (CAPh, HL). In this brief review, we summarize recent research for lanthanides CAPh-based coordination compounds of general formulas Cat[LnL]4, [LnL3Q] and [Ln(HL)3(NO3)3], where Cat+ = Cs+, NEt4+, PPh4 + and Q = 1,10-phenanthroline, 2,2-bipyridine or triphenylphosphine oxide, involving the use of thermal gravimetric analysis, X-ray analysis, and absorption and luminescence spectroscopy. We carried out a comparison with selected Ln3+ β-diketonates. Possibilities and developments of theoretical calculations on energy transfer rates are also presented.
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Affiliation(s)
- Nataliia S. Kariaka
- Inorganic Chemistry Department, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
| | - Aneta Lipa
- Faculty of Chemistry, University of Wroclaw, Wroclaw, Poland
| | - Albano N. Carneiro Neto
- Physics Department, CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Oscar L. Malta
- Departamento de Química Fundamental, Universidade Federal de Pernambuco, Recife, Brazil
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Kitagawa Y, Nakai T, Hosoya S, Shoji S, Hasegawa Y. Luminescent Lanthanide Complexes for Effective Oxygen-Sensing and Singlet Oxygen Generation. Chempluschem 2023:e202200445. [PMID: 36756816 DOI: 10.1002/cplu.202200445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 01/25/2023] [Indexed: 02/10/2023]
Abstract
Oxygen quantification using luminescence has attracted considerable attention in various fields, including environmental monitoring and clinical analysis. Among the reported luminophores, trivalent lanthanide complexes have displayed characteristic narrow emission bands with high brightness. This bright emission is based on photo-sensitized energy transfer via organic triplet states. The organic triplet states in lanthanide complexes effectively react with the triplet oxygen, enabling oxygen quantification by lanthanide luminescence. Some TbIII and EuIII complexes with slow deactivation processes have also formed the excited state equilibrium, thus resulting in the emission-lifetime based oxygen sensing property. The combination of TbIII /EuIII emission, EuIII /SmIII emission, EuIII /ligand phosphorescence, and ligand fluorescence/ligand phosphorescence provide the ratiometric oxygen-sensing properties. Moreover, the reaction generates singlet oxygen species which exhibit numerous applications in the photo-medical field. The ligands with large π-conjugated aromatic systems, such as porphyrin, phthalocyanine, and polyaromatic compounds, induces highly efficient oxygen generation. The combination of effective luminescence with singlet-oxygen generation by the lanthanide complexes render them suitable for photo-driven theranostics. This review summarizes the research progress of lanthanide complexes with efficient oxygen-sensing and singlet-oxygen generation properties.
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Affiliation(s)
- Yuichi Kitagawa
- Faculty of Engineering, Hokkaido University Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido, 001-0021, Japan
| | - Takuma Nakai
- Graduate School of Chemical Sciences and Engineering, Hokkaido University Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Shota Hosoya
- Graduate School of Chemical Sciences and Engineering, Hokkaido University Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Sunao Shoji
- Faculty of Engineering, Hokkaido University Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido, 001-0021, Japan
| | - Yasuchika Hasegawa
- Faculty of Engineering, Hokkaido University Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido, 001-0021, Japan
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11
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Ganaie AB, Iftikhar K. Structure, optical absorption and NIR-Photoluminescence of ternary Neodymium (III) complexes with fluorinated β-diketone and heterocyclic Lewis bases. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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12
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Duan YY, Wu DF, Chen HH, Wang YJ, Li L, Gao HL, Cui JZ. New dinuclear lanthanide complexes derived from Schiff base ligand and β-diketonate co-ligand: Synthesis, crystal structures, luminescent and magnetic properties. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Preparation of photonic molecular trains via soft-crystal polymerization of lanthanide complexes. Nat Commun 2022; 13:3660. [PMID: 35790726 PMCID: PMC9256636 DOI: 10.1038/s41467-022-31164-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 05/30/2022] [Indexed: 11/20/2022] Open
Abstract
Soft-crystals are defined as flexible molecular solids with highly ordered structures and have attracted attention in molecular sensing materials based on external triggers and environments. Here, we show the soft-crystal copolymerization of green-luminescent Tb(III) and yellow-luminescent Dy(III) coordination centers. Soft-crystal polymerization is achieved via transformation of monomeric dinuclear complexes and polymeric structures with respect to coordination number and geometry. The structural transformation is characterized using single-crystal and powder X-ray diffraction. The connected Tb(III) crystal-Dy(III) crystal show photon energy transfer from the Dy(III) centre to the Tb(III) centre under blue light excitation (selective Dy(III) centre excitation: 460 ± 10 nm). The activation energy of the energy transfer is estimated using the temperature-dependent emission lifetimes and emission quantum yields, and time-dependent density functional theory (B3LYP) calculations. Luminescence-conductive polymers, photonic molecular trains, are successfully prepared via soft-crystal polymerization on crystal media with remarkable long-range energy migration. Soft-crystals are molecular solids with highly ordered structures. Here, authors report the soft-crystal copolymerization of green-luminescent Tb(III) and yellow-luminescent Dy(III) complexes, and study the long-range energy transfer from one crystal to the other.
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Zhou Z, McNeely J, Greenough J, Wei Z, Han H, Rouzières M, Rogachev AY, Clérac R, Petrukhina MA. Lanthanide-mediated tuning of electronic and magnetic properties in heterotrimetallic cyclooctatetraenyl multidecker self-assemblies. Chem Sci 2022; 13:3864-3874. [PMID: 35432895 PMCID: PMC8966735 DOI: 10.1039/d2sc00631f] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 02/17/2022] [Indexed: 11/24/2022] Open
Abstract
The synthesis of a novel family of homoleptic COT-based heterotrimetallic self-assemblies bearing the formula [LnKCa(COT)3(THF)3] (Ln(iii) = Gd, Tb, Dy, Ho, Er, Tm, and Yb) is reported followed by their X-ray crystallographic and magnetic characterization. All crystals conform to the monoclinic P21/c space group with a slight compression of the unit cell from 3396.4(2) Å3 to 3373.2(4) Å3 along the series. All complexes exhibit a triple-decker structure having the Ln(iii) and K(i) ions sandwiched by three COT2− ligands with an end-bound {Ca2+(THF)3} moiety to form a non-linear (153.5°) arrangement of three different metals. The COT2− ligands act in a η8-mode with respect to all metal centers. A detailed structural comparison of this unique set of heterotrimetallic complexes has revealed consistent trends along the series. From Gd to Yb, the Ln to ring-centroid distance decreases from 1.961(3) Å to 1.827(2) Å. In contrast, the separation of K(i) and Ca(ii) ions from the COT-centroid (2.443(3) and 1.914(3) Å, respectively) is not affected by the change of Ln(iii) ions. The magnetic property investigation of the [LnKCa(COT)3(THF)3] series (Ln(iii) = Gd, Tb, Dy, Ho, Er, and Tm) reveals that the Dy, Er, and Tm complexes display slow relaxation of their magnetization, in other words, single-molecule magnet (SMM) properties. This behaviour is dominated by thermally activated (Orbach-like) and quantum tunneling processes for [DyKCa(COT)3(THF)3] in contrast to [ErKCa(COT)3(THF)3], in which the thermally activated and Raman processes appear to be relevant. Details of the electronic structures and magnetic properties of these complexes are further clarified with the help of DFT and ab initio theoretical calculations. A new class of heterotrimetallic COT-based self-assemblies accommodates metals from groups I–III in three different oxidation states and enables tuning of electronic and magnetic properties.![]()
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Affiliation(s)
- Zheng Zhou
- Department of Chemistry, University at Albany, State University of New York Albany NY 12222 USA
| | - James McNeely
- Department of Chemistry, Boston University Boston MA USA
| | - Joshua Greenough
- Department of Chemistry, University at Albany, State University of New York Albany NY 12222 USA
| | - Zheng Wei
- Department of Chemistry, University at Albany, State University of New York Albany NY 12222 USA
| | - Haixiang Han
- Department of Materials Science and Engineering, Cornell University Ithaca New York 14853 USA
| | - Mathieu Rouzières
- Univ. of Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031 F-33600 Pessac France
| | - Andrey Yu Rogachev
- Department of Chemistry, Illinois Institute of Technology Chicago IL 60616 USA
| | - Rodolphe Clérac
- Univ. of Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031 F-33600 Pessac France
| | - Marina A Petrukhina
- Department of Chemistry, University at Albany, State University of New York Albany NY 12222 USA
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Bashir Ganaie A, Iftikhar K. Stoichiometrically controlled synthesis and comparative study of photoluminescence of seven and eight coordinate complexes of Sm3+, Eu3+ and Tb3+ based on 6,6,7,7,8,8,8- heptafluoro-2,2-dimethyl-3,5-octanedione (Hfod) and imidazole. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113715] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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16
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Ahmed Z, Ali A, Iftikhar K. Structure elucidation by Sparkle/RM1, and solution behavior of lanthanideIII complexes: NMR, 4f‒4f absorption spectra and Photoluminescent properties. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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17
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Hasegawa Y, Shoji S, Kitagawa Y. Luminescent Eu(III)-based Coordination Polymers for Photonic Materials. CHEM LETT 2022. [DOI: 10.1246/cl.210650] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yasuchika Hasegawa
- Faculty of Engineering and Institute for Chemical Reaction Design and Discovery, Hokkaido University, Kita-13 Nishi-8, Kita-ku, Sapporo, Hokkaido 060-8628
| | - Sunao Shoji
- Faculty of Engineering and Institute for Chemical Reaction Design and Discovery, Hokkaido University, Kita-13 Nishi-8, Kita-ku, Sapporo, Hokkaido 060-8628
| | - Yuichi Kitagawa
- Faculty of Engineering and Institute for Chemical Reaction Design and Discovery, Hokkaido University, Kita-13 Nishi-8, Kita-ku, Sapporo, Hokkaido 060-8628
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Ilmi R, Yin J, Dutra JDL, Al Rasbi NK, Oliveira WF, Zhou L, Wong WYR, Raithby PR, Khan MS. Single component white-OLEDs derived from tris(β-diketonato) europium(III) complexes bearing the large bite angle N^N 2-(4-thiazolyl)benzimidazole ligand. Dalton Trans 2022; 51:14228-14242. [DOI: 10.1039/d2dt01873j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new organo-europium complexes (OEuCs) [Eu(tfac)3(TB-Im)] (Eu1) [Eu(hfac)3(TB-Im)] (Eu2) incorporating fluorinated (hexafluoroacetylacetone; Hhfaa) or hemi-fluorinated (trifluoroacetylacetone; Htfac) β-diketones together with the large bite angle N^N ligand (2-(4-Thiazolyl)benzimidazole; TB-Im) have been...
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19
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Kitagawa Y, Tsurui M, Hasegawa Y. Bright red emission with high color purity from Eu(iii) complexes with π-conjugated polycyclic aromatic ligands and their sensing applications. RSC Adv 2022; 12:810-821. [PMID: 35425146 PMCID: PMC8978811 DOI: 10.1039/d1ra08233g] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 12/18/2021] [Indexed: 12/25/2022] Open
Abstract
Eu(iii) complexes emit red light with a high color purity and have consequently attracted attention for development toward display and physical sensing applications. The characteristic pure color emission originates from the intra-4f–4f transition, and the brightness strongly depends on the electronic and steric structures of organic ligands. A large π-conjugated ligand design with a large absorption coefficient has been actively studied for achieving bright emission. The π-conjugated Eu(iii) luminophores also provide oxygen and temperature sensing properties by controlling their excited state dynamics based on π-electron systems. A comprehensive understanding of the design strategy of large π-conjugated ligands is crucial for the further development of luminescent Eu(iii) complexes. In this review, we summarize the research progress on π-conjugated Eu(iii) luminophores exhibiting bright emission and their physical sensing applications. In this review, we summarize the research progress on π-conjugated Eu(iii) luminophores exhibiting bright emission and their physical sensing applications.![]()
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Affiliation(s)
- Yuichi Kitagawa
- Faculty of Engineering, Hokkaido University, N13W8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, N21 W10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
| | - Makoto Tsurui
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, N13W8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Yasuchika Hasegawa
- Faculty of Engineering, Hokkaido University, N13W8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, N21 W10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
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20
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Karashimada R, Kambe T, Igarashi C, Masuya-Suzuki A, Iki N. Enhanced TbIII-centered Luminescence due to Elongated Methylene Arms of Tripodal Schiff Base Ligand. CHEM LETT 2021. [DOI: 10.1246/cl.210150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Ryunosuke Karashimada
- Graduate School of Environmental Studies, Tohoku University, 6-6-07 Aramaki-Aoba, Aoba, Sendai, Miyagi 980-8579, Japan
| | - Takafumi Kambe
- Graduate School of Environmental Studies, Tohoku University, 6-6-07 Aramaki-Aoba, Aoba, Sendai, Miyagi 980-8579, Japan
| | - Chikai Igarashi
- Graduate School of Environmental Studies, Tohoku University, 6-6-07 Aramaki-Aoba, Aoba, Sendai, Miyagi 980-8579, Japan
| | - Atsuko Masuya-Suzuki
- Graduate School of Environmental Studies, Tohoku University, 6-6-07 Aramaki-Aoba, Aoba, Sendai, Miyagi 980-8579, Japan
| | - Nobuhiko Iki
- Graduate School of Environmental Studies, Tohoku University, 6-6-07 Aramaki-Aoba, Aoba, Sendai, Miyagi 980-8579, Japan
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21
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Aquino LEDN, Barbosa GA, Ramos JDL, O K Giese S, Santana FS, Hughes DL, Nunes GG, Fu L, Fang M, Poneti G, Carneiro Neto AN, Moura RT, Ferreira RAS, Carlos LD, Macedo AG, Soares JF. Seven-Coordinate Tb 3+ Complexes with 90% Quantum Yields: High-Performance Examples of Combined Singlet- and Triplet-to-Tb 3+ Energy-Transfer Pathways. Inorg Chem 2021; 60:892-907. [PMID: 33393287 DOI: 10.1021/acs.inorgchem.0c03020] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Seven-coordinate, pentagonal-bipyramidal (PBP) complexes [Ln(bbpen)Cl] and [Ln(bbppn)Cl], in which Ln = Tb3+ (products I and II), Eu3+ (III and IV), and Gd3+ (V and VI), with bbpen2- = N,N'-bis(2-oxidobenzyl)-N,N'-bis(pyridin-2-ylmethyl)ethylenediamine and bbppn2- = N,N'-bis(2-oxidobenzyl)-N,N'-bis(pyridin-2-ylmethyl)-1,2-propanediamine, were synthesized and characterized by single-crystal X-ray diffraction analysis, alternating-current magnetic susceptibility measurements, and photoluminescence (steady-state and time-resolved) spectroscopy. Under a static magnetic field of 0.1 T, the Tb3+ complexes I and II revealed single-ion-magnet behavior. Also, upon excitation at 320 nm at 300 K, I and II presented very high absolute emission quantum yields (0.90 ± 0.09 and 0.92 ± 0.09, respectively), while the corresponding Eu3+ complexes III and IV showed no photoluminescence. Detailed theoretical calculations on the intramolecular energy-transfer rates for the Tb3+ products indicated that both singlet and triplet ligand excited states contribute efficiently to the overall emission performance. The expressive quantum yields, QLnL, measured for I and II in the solid state and a dichloromethane solution depend on the excitation wavelength, being higher at 320 nm. Such a dependence was rationalized by computing the intersystem crossing rates (WISC) and singlet fluorescence lifetimes (τS) related to the population dynamics of the S1 and T1 levels. Thin films of product II showed high air stability and photostability upon continuous UV illumination, which allowed their use as downshifting layers in a green light-emitting device (LED). The prototypes presented a luminous efficacy comparable with those found in commercial LED coatings, without requiring encapsulation or dispersion of II in host matrixes. The results indicate that the PBP environment determined by the ethylenediamine (en)-based ligands investigated in this work favors the outstanding optical properties in Tb3+ complexes. This work presents a comprehensive structural, chemical, and spectroscopic characterization of two Tb3+ complexes of mixed-donor, en-based ligands, focusing on their outstanding optical properties. They constitute good molecular examples in which both triplet and singlet excited states provide energy to the Tb3+ ion and lead to high values of QLnL.
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Affiliation(s)
| | - Guilherme A Barbosa
- Department of Chemistry, Federal University of Paraná, 81530-900 - Curitiba-PR, Brazil
| | - Jaqueline de L Ramos
- Department of Chemistry, Federal University of Paraná, 81530-900 - Curitiba-PR, Brazil
| | - Siddhartha O K Giese
- Department of Chemistry, Federal University of Paraná, 81530-900 - Curitiba-PR, Brazil
| | - Francielli S Santana
- Department of Chemistry, Federal University of Paraná, 81530-900 - Curitiba-PR, Brazil
| | - David L Hughes
- School of Chemistry, University of East Anglia, Norwich NR4 7TJ, U.K
| | - Giovana G Nunes
- Department of Chemistry, Federal University of Paraná, 81530-900 - Curitiba-PR, Brazil
| | - Lianshe Fu
- Phantom-g, CICECO - Aveiro Institute of Materials, Department of Physics, University of Aveiro, 3810-193 - Aveiro, Portugal
| | - Ming Fang
- Phantom-g, CICECO - Aveiro Institute of Materials, Department of Physics, University of Aveiro, 3810-193 - Aveiro, Portugal
| | - Giordano Poneti
- Institute of Chemistry, Federal University of Rio de Janeiro, 21941-909 - Rio de Janeiro-RJ, Brazil
| | - Albano N Carneiro Neto
- Phantom-g, CICECO - Aveiro Institute of Materials, Department of Physics, University of Aveiro, 3810-193 - Aveiro, Portugal
| | - Renaldo T Moura
- Department of Chemistry and Physics, Federal University of Paraíba, 58397-000 - Areia-PB, Brazil
| | - Rute A S Ferreira
- Phantom-g, CICECO - Aveiro Institute of Materials, Department of Physics, University of Aveiro, 3810-193 - Aveiro, Portugal
| | - Luís D Carlos
- Phantom-g, CICECO - Aveiro Institute of Materials, Department of Physics, University of Aveiro, 3810-193 - Aveiro, Portugal
| | - Andreia G Macedo
- Phantom-g, CICECO - Aveiro Institute of Materials, Department of Physics, University of Aveiro, 3810-193 - Aveiro, Portugal.,Department of Physics, Federal University of Technology, 80230-901 - Curitiba, PR, Brazil
| | - Jaísa F Soares
- Department of Chemistry, Federal University of Paraná, 81530-900 - Curitiba-PR, Brazil
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Masuya‐Suzuki A, Goto S, Kambe T, Karashimada R, Kubota Y, Iki N. Short Radiative Lifetime and Non-Triplet Sensitization in Near-Infrared-Luminescent Yb(III) Complex with Tripodal Schiff Base. ChemistryOpen 2021; 10:46-55. [PMID: 33476098 PMCID: PMC7819271 DOI: 10.1002/open.202000224] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 12/03/2020] [Indexed: 11/29/2022] Open
Abstract
We prepared Ln(III) (Ln=Eu, Gd, and Yb) complexes with a tripodal Schiff base, tris[2-(5-methylsalicylideneimino)ethyl]amine (H3 L) and studied their photophysical properties. Upon ligand excitation, YbL showed Yb(III)-centered luminescence in the near-infrared region. While the overall quantum yield (0.60(1)%) of YbL in acetonitrile was moderate among the reported values for Yb(III) complexes, its radiative lifetime (0.33(2) ms) was significantly shorter than those reported previously. We propose that the ligand-to-metal charge-transfer (LMCT) state mediated the sensitization in YbL. The emission and excitation spectra of EuL indicated the participation of the LMCT state in the sensitization. The radiative lifetime (0.84(7) ms) for EuL in the solid state was rather short compared to those of reported Eu(III) complexes. Our results show that the Yb(III) complex with the Schiff base ligand has two features: the short radiative lifetime and the non-triplet sensitization path.
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Affiliation(s)
- Atsuko Masuya‐Suzuki
- Graduate School of Environmental StudiesTohoku University6-6-07 Aramaki-aza Aoba, Aoba-ku SendaiMiyagi980-8579Japan
| | - Satoshi Goto
- Graduate School of Environmental StudiesTohoku University6-6-07 Aramaki-aza Aoba, Aoba-ku SendaiMiyagi980-8579Japan
| | - Takafumi Kambe
- Graduate School of Environmental StudiesTohoku University6-6-07 Aramaki-aza Aoba, Aoba-ku SendaiMiyagi980-8579Japan
| | - Ryunosuke Karashimada
- Graduate School of Environmental StudiesTohoku University6-6-07 Aramaki-aza Aoba, Aoba-ku SendaiMiyagi980-8579Japan
| | - Yasuhiro Kubota
- Department of Chemistry and Biomolecular ScienceFaculty of Engineering, Gifu University1-1 YanagidoGifu501-1193Japan
| | - Nobuhiko Iki
- Graduate School of Environmental StudiesTohoku University6-6-07 Aramaki-aza Aoba, Aoba-ku SendaiMiyagi980-8579Japan
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23
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Chong BSK, Rajah D, Allen MF, Galán LA, Massi M, Ogden M, Moore EG. Enhanced Near-Infrared Emission from Eight-Coordinate vs Nine-Coordinate Yb III Complexes Using 2-(5-Methylpyridin-2-yl)-8-hydroxyquinoline. Inorg Chem 2020; 59:16194-16204. [PMID: 33121245 DOI: 10.1021/acs.inorgchem.0c01802] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Enhanced near-infrared (NIR) luminescence from two structurally related heterobinuclear NaIYbIII eight-cooridnate and heterobinuclear YbIIINaI eight-coordinate (CN = 8) complexes is reported and compared to a nine-coordinate (CN = 9) homoleptic complex. For the heteroleptic complex, [Yb(MPQ2)(acac)], the YbIII cation is coordinated to two tridentate 2-(5-methylpyridin-2-yl)-8-quinolinate (MPQ) anions, with a bidentate acetylacetonate (acac) anion completing the coordination sphere. Instead, the heterobinuclear [NaYb(MPQ)4] complex comprises a total of four anionic MPQ ligands, two of which exhibit κ3-coordination to the YbIII cation. The remaining two MPQ anions are unidentate toward the lanthanide and form μ2-bridges via the deprotonated quinolinate oxygens to a bound NaI cation which is also coordinated to the remaining nitrogen donor atoms. The structural properties of these complexes were evaluated by single-crystal X-ray diffraction (SXRD), continuous shape measure (CShM) analysis, and 1H NMR spectroscopy using a diamagnetic LuIII analogue. The corresponding photophysical properties were examined in CH2Cl2 solution by using absorption and emission spectroscopy. For both the complexes, characteristic YbIII emission is observed at ca. 980 nm, with recorded photoluminescence quantum yields (Φobs) and NIR luminescence lifetimes (τobs) of 2.0% and 14.0 μs vs 1.5% and 11.6 μs for the [NaYb(MPQ)4] and [Yb(MPQ)2(acac)] complexes, respectively. Interestingly, the eight-coordinate YbIII complexes both have higher photoluminescence quantum yields when compared to the homoleptic [Yb(MPQ)3] complex, which has a reported quantum yield of 1.0% and a NIR lifetime determined herein of 13.3 μs under identical conditions. These results have been rationalized by considering the overall efficiency of the ligand-centered sensitization process (ηsens = Φisc × Φeet), together with subsequent radiative (kr) and nonradiative (knr) deactivation of the YbIII cation. Moreover, the efficiency of the intersystem crossing (Φisc) and electronic energy transfer (Φeet) processes involved in the antennae effect have been quantified for the new complexes using a combination of nanosecond and femtosecond transient absorption techniques and have been compared to our previous results using [Ln(MPQ)3] complexes with Ln = Yb and Lu.
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Affiliation(s)
- Bowie S K Chong
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Divya Rajah
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Matthew F Allen
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Laura Abad Galán
- School of Molecular and Life Sciences, and Curtin Institute of Functional Molecules and Interfaces, Curtin University, Kent Street, Bentley, WA 6102, Australia
| | - Massimiliano Massi
- School of Molecular and Life Sciences, and Curtin Institute of Functional Molecules and Interfaces, Curtin University, Kent Street, Bentley, WA 6102, Australia
| | - Mark Ogden
- School of Molecular and Life Sciences, and Curtin Institute of Functional Molecules and Interfaces, Curtin University, Kent Street, Bentley, WA 6102, Australia
| | - Evan G Moore
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
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24
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Ullmann S, Hahn P, Mini P, Tuck KL, Kahnt A, Abel B, Gutierrez Suburu ME, Strassert CA, Kersting B. Mixed-ligand lanthanide complexes supported by ditopic bis(imino-methyl)-phenol/calix[4]arene macrocycles: synthesis, structures, and luminescence properties of [Ln 2(L 2)(MeOH) 2] (Ln = La, Eu, Tb, Yb). Dalton Trans 2020; 49:11179-11191. [PMID: 32748924 DOI: 10.1039/d0dt02303e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The lanthanide binding ability of a macrocyclic ligand H6L2 comprising two bis(iminomethyl)phenol and two calix[4]arene units has been studied. H6L2 is a ditopic ligand which provides dinuclear neutral complexes of composition [Ln2(L2)(MeOH)2] (Ln = La (1), Eu (2), Tb (3), and Yb (4)) in very good yield. X-ray crystal structure analyses for 2 and 3 show that (L2)6- accommodates two seven coordinated lanthanide ions in a distorted monocapped trigonal prismatic/octahedral coordination environment. UV-vis spectroscopic titrations performed with La3+, Eu3+, Tb3+ and Yb3+ ions in mixed MeOH/CH2Cl2 solution (I = 0.01 M NBu4PF6) reveal that a 2 : 1 (metal : ligand) stoichiometry is present in solution, with log K11 and K21 values ranging from 5.25 to 6.64. The ratio α = K11/K21 of the stepwise formation constants for the mononuclear (L2 + M = ML2, log K11) and the dinuclear complexes (ML2 + M = M2L2, log K21) was found to be invariably smaller than unity indicating that the binding of the first Ln3+ ion augments the binding of the second Ln3+ ion. The present complexes are less luminescent than other seven-coordinated Eu and Tb complexes, which can be traced to vibrational relaxation of excited EuIII and TbIII states by the coligated MeOH and H2O molecules and/or low-lying ligand-to-metal charge-transfer (LMCT) states.
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Affiliation(s)
- Steve Ullmann
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany.
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25
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1H NMR of paramagnetic Dy3+ complex with DTPA-amide p-xylylene-cyclophane; possible probing action toward d-histidine and histamine. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114474] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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26
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Ahmed Z, Iftikhar K. Blue to near infra-red photoluminescence from distorted SAP (C4V) tris(hexafluoroacetylacetonato)Ho(III) and Tm(III) complexes with indazole. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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27
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Ferreira da Rosa PP, Kitagawa Y, Hasegawa Y. Luminescent lanthanide complex with seven-coordination geometry. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2019.213153] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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28
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Ahmed Z, Mahiya K, Iftikhar K. Structures and pure near-infrared photophysics of erbium and ytterbium( iii) complexes incorporating fluorinated β-diketone and neutral unidentate ligands. NEW J CHEM 2020. [DOI: 10.1039/d0nj02059a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper reports on the synthesis, structures and pure near-infrared photophysical properties of low symmetry Er3+ and Yb3+ β-diketonate ternary complexes.
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Affiliation(s)
- Zubair Ahmed
- Lanthanide Research Laboratory
- Department of Chemistry
- Jamia Millia Islamia
- India
| | - Kuldeep Mahiya
- Department of Chemistry
- F G M Government College
- Adampur, Mandi Adampur
- Hisar-125052
- India
| | - Khalid Iftikhar
- Lanthanide Research Laboratory
- Department of Chemistry
- Jamia Millia Islamia
- India
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29
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Ahmed Z, Avila HC, Carvalho RS, Kai J, Resende JALC, Bandini E, Barbieri A, Cremona M. Bright neodymium complexes for efficient near infra-red organic light emitting diodes. NEW J CHEM 2020. [DOI: 10.1039/d0nj00403k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper reports the synthesis, structures, and photophysical and electroluminescence properties of low symmetry NIR emitting octa- and nona-coordinate Nd tris β-diketonate complexes.
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Affiliation(s)
- Zubair Ahmed
- Department of Physics
- Pontifícia Universidade Católica do Rio de Janeiro
- PUC-Rio
- Rio de Janeiro
- Brazil
| | - Harold C. Avila
- Department of Physics
- Pontifícia Universidade Católica do Rio de Janeiro
- PUC-Rio
- Rio de Janeiro
- Brazil
| | - Rafael S. Carvalho
- Department of Physics
- Pontifícia Universidade Católica do Rio de Janeiro
- PUC-Rio
- Rio de Janeiro
- Brazil
| | - Jiang Kai
- Department of Chemistry
- Pontifícia Universidade Católica do Rio de Janeiro
- PUC-Rio
- Rio de Janeiro
- Brazil
| | - J. A. L. C. Resende
- Instituto de Ciências Extas e da Terra, Centro Universitário do Araguaia
- Universidade Federal do Mato Grosso
- Barra do Garças
- Brazil
| | - Elisa Bandini
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF)
- Consiglio Nazionale delle Ricerche (CNR)
- Bologna 40129
- Italy
| | - Andrea Barbieri
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF)
- Consiglio Nazionale delle Ricerche (CNR)
- Bologna 40129
- Italy
| | - Marco Cremona
- Department of Physics
- Pontifícia Universidade Católica do Rio de Janeiro
- PUC-Rio
- Rio de Janeiro
- Brazil
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30
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Ilmi R, Kansız S, Al-Rasbi NK, Dege N, Raithby PR, Khan MS. Towards white light emission from a hybrid thin film of a self-assembled ternary samarium(iii) complex. NEW J CHEM 2020. [DOI: 10.1039/c9nj06287d] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A new samarium(iii) complex, [Sm(hfaa)3(Py-Im)], has been prepared and fabricated into thin films which show color tunability from violet to orange depending on the concentration of doping within the film.
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Affiliation(s)
- Rashid Ilmi
- Department of Chemistry
- Sultan Qaboos University
- Al Khod 123
- Oman
| | - Sevgi Kansız
- Department of Fundamental Sciences
- Faculty of Engineering
- Samsun University
- Samsun
- Turkey
| | | | - Necmi Dege
- Department of Physics
- Faculty of Arts and Sciences
- Ondokuz Mayıs University
- Samsun
- Turkey
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31
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Aoki S, Kikuchi C, Kitagawa Y, Hasegawa Y, Sonoike S, Saga Y, Hatanaka M. Evaluation of Zn
2+
Coordination Structures in Chiral Zn
2+
Complexes Based on Shape Measurement Factors: Relationships between Activity and the Coordination Structure. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900934] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shin Aoki
- Faculty of Pharmaceutical Sciences Tokyo University of Science 2641 Yamazaki 278‐8510 Noda Chiba Japan
- Research Institute for Science and Technology Tokyo University of Science 2641 Yamazaki 278‐8510 Noda Chiba Japan
| | - Chiharu Kikuchi
- Faculty of Pharmaceutical Sciences Tokyo University of Science 2641 Yamazaki 278‐8510 Noda Chiba Japan
| | - Yuichi Kitagawa
- Faculty of Engineering and Graduate School of Engineering Hokkaido University Kita‐13 Jo. Nishi‐8 Chome 060‐8628 Sapporo Hokkaido Japan
| | - Yasuchika Hasegawa
- Faculty of Engineering and Graduate School of Engineering Hokkaido University Kita‐13 Jo. Nishi‐8 Chome 060‐8628 Sapporo Hokkaido Japan
| | - Shotaro Sonoike
- Faculty of Pharmaceutical Sciences Tokyo University of Science 2641 Yamazaki 278‐8510 Noda Chiba Japan
- Chugai Pharmaceutical Co., Ltd. 2‐1–1‐Nihonbashi Muromachi, Cyuo‐ku 103‐8324 Tokyo Japan
| | - Yutaka Saga
- Faculty of Pharmaceutical Sciences Tokyo University of Science 2641 Yamazaki 278‐8510 Noda Chiba Japan
| | - Miho Hatanaka
- Institute for Research Initiatives Division for Research Strategy Graduate School of Science and Technology, and Nara Institute of Science and Technology 8916‐5 Takayama‐cho, Ikoma‐shi 630‐0192 Nara Japan
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32
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Alexander OT, Kroon RE, Brink A, Visser HG. Symmetry correlations between crystallographic and photoluminescence study of ternary β-diketone europium(iii) based complexes using 1,10-phenanthroline as the ancillary ligand. Dalton Trans 2019; 48:16074-16082. [PMID: 31616878 DOI: 10.1039/c9dt02580d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This work entails deep red emitting EuIII based complexes with a variety of ternary β-diketonate ligands and 1,10-phenanthroline as the ancillary ligand in the system. The solid state structure and spectroscopic analysis has been outlaid in terms of photoluminescence and crystallography. A luminescence quantum efficiency of 50% was obtained for the [tris-(4,4,4-trifluoro-1-chlorophenyl-butanedione)mono-(1,10-phenanthroline)europium(iii)] complexes. Moreover, complexes [tris-(2,2,6,6-tetramethyl-heptanedione)mono-(1,10-phenanthroline) europium(iii)] and {[hexa-(benzyl carboxylic acid) bis-(1,10-phenanthroline)di-europium(iii)]-μ-[κ2-O,O'-(benzyl carboxylic acid)]2} were found to also have quantum yields of 9% and 28% with respective sensitization efficiencies of 85%, 15% and 58%. These results were articulated with crystallographic details pertaining to the nature of coordination and the effect of steric and electronic properties thereof which somewhat impacts the Eu-N bond distances. A symmetry correlation was drawn between the crystallographic data and the photoluminescence data.
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Affiliation(s)
- Orbett T Alexander
- Department of Chemistry, University of the Free State, Bloemfontein, 9301, South Africa.
| | - Robin E Kroon
- Department of Physics, University of the Free State, Bloemfontein, 9301, South Africa
| | - Alice Brink
- Department of Chemistry, University of the Free State, Bloemfontein, 9301, South Africa.
| | - Hendrik G Visser
- Department of Chemistry, University of the Free State, Bloemfontein, 9301, South Africa.
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33
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Gregório T, Leão JDM, Barbosa GA, Ramos JDL, Om Kumar Giese S, Briganti M, Rodrigues PC, de Sá EL, Viana ER, Hughes DL, Carlos LD, Ferreira RAS, Macedo AG, Nunes GG, Soares JF. Promoting a Significant Increase in the Photoluminescence Quantum Yield of Terbium(III) Complexes by Ligand Modification. Inorg Chem 2019; 58:12099-12111. [DOI: 10.1021/acs.inorgchem.9b01397] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thaiane Gregório
- Department of Chemistry, Federal University of Paraná, Centro Politécnico, Jardim das Américas, 81530-900 Curitiba, Paraná, Brazil
| | - Joyce de M. Leão
- Department of Physics, Federal University of Technology, Av. Sete de Setembro, 3165, 80230-901 Curitiba, Paraná, Brazil
| | - Guilherme A. Barbosa
- Department of Chemistry, Federal University of Paraná, Centro Politécnico, Jardim das Américas, 81530-900 Curitiba, Paraná, Brazil
| | - Jaqueline de L. Ramos
- Department of Chemistry, Federal University of Paraná, Centro Politécnico, Jardim das Américas, 81530-900 Curitiba, Paraná, Brazil
| | - Siddhartha Om Kumar Giese
- Department of Chemistry, Federal University of Paraná, Centro Politécnico, Jardim das Américas, 81530-900 Curitiba, Paraná, Brazil
| | - Matteo Briganti
- Department of Chemistry, Federal University of Paraná, Centro Politécnico, Jardim das Américas, 81530-900 Curitiba, Paraná, Brazil
| | - Paula C. Rodrigues
- Department of Chemistry, Federal University of Technology, Rua Deputado Heitor Alencar Furtado, 5000, 81280-340 Curitiba, Paraná, Brazil
| | - Eduardo L. de Sá
- Department of Chemistry, Federal University of Paraná, Centro Politécnico, Jardim das Américas, 81530-900 Curitiba, Paraná, Brazil
| | - Emilson R. Viana
- Department of Physics, Federal University of Technology, Av. Sete de Setembro, 3165, 80230-901 Curitiba, Paraná, Brazil
| | - David L. Hughes
- School of Chemistry, University of East Anglia, Norwich NR4 7TJ, U.K
| | - Luís D. Carlos
- Department of Physics, Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Rute A. S. Ferreira
- Department of Physics, Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Andreia G. Macedo
- Department of Physics, Federal University of Technology, Av. Sete de Setembro, 3165, 80230-901 Curitiba, Paraná, Brazil
| | - Giovana G. Nunes
- Department of Chemistry, Federal University of Paraná, Centro Politécnico, Jardim das Américas, 81530-900 Curitiba, Paraná, Brazil
| | - Jaísa F. Soares
- Department of Chemistry, Federal University of Paraná, Centro Politécnico, Jardim das Américas, 81530-900 Curitiba, Paraná, Brazil
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34
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Ilmi R, Khan MS, Li Z, Zhou L, Wong WY, Marken F, Raithby PR. Utilization of Ternary Europium Complex for Organic Electroluminescent Devices and as a Sensitizer to Improve Electroluminescence of Red-Emitting Iridium Complex. Inorg Chem 2019; 58:8316-8331. [DOI: 10.1021/acs.inorgchem.9b00303] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Rashid Ilmi
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Sultanate of Oman
| | - Muhammad S. Khan
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Sultanate of Oman
| | - Zhenzhen Li
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, People’s Republic of China
| | - Liang Zhou
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, People’s Republic of China
| | - Wai-Yeung Wong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon Hong Kong
| | - Frank Marken
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Paul R. Raithby
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
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35
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Ibrahim-Ouali M, Dumur F. Recent Advances on Metal-Based Near-Infrared and Infrared Emitting OLEDs. Molecules 2019; 24:E1412. [PMID: 30974838 PMCID: PMC6480698 DOI: 10.3390/molecules24071412] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 04/07/2019] [Accepted: 04/08/2019] [Indexed: 12/27/2022] Open
Abstract
During the past decades, the development of emissive materials for organic light-emitting diodes (OLEDs) in infrared region has focused the interest of numerous research groups as these devices can find interest in applications ranging from optical communication to defense. To date, metal complexes have been most widely studied to elaborate near-infrared (NIR) emitters due to their low energy emissive triplet states and their facile access. In this review, an overview of the different metal complexes used in OLEDs and enabling to get an infrared emission is provided.
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Affiliation(s)
| | - Frédéric Dumur
- Aix Marseille Univ, CNRS, ICR, UMR 7273, F-13397 Marseille, France.
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36
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Bhat SA, Iftikhar K. Synthesis, characterization, photoluminescence and intensity parameters of high quantum efficiency pure-red emitting Eu( iii) fluorinated β-diketone complexes. NEW J CHEM 2019. [DOI: 10.1039/c9nj00697d] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The high quantum efficiency mononuclear 7-, 8- and 9-coordinate complexes of tris(heptafluoro-dimethyl-octanedionato)Eu(iii) and 1H-indazole, 2-(1H-imidazol-2-yl)pyridine and 2,4,6-tris(2-pyridyl)-s-triazine are synthesized and thoroughly characterized.
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Affiliation(s)
- Shabir Ahmad Bhat
- Lanthanide Research Laboratory
- Department of Chemistry
- Jamia Millia Islamia
- New-Delhi 110025
- India
| | - Khalid Iftikhar
- Lanthanide Research Laboratory
- Department of Chemistry
- Jamia Millia Islamia
- New-Delhi 110025
- India
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37
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Ahmed Z, Iftikhar K. Red, orange-red and near-infrared light emitting ternary lanthanide tris β-diketonate complexes with distortedC4vgeometrical structures. Dalton Trans 2019; 48:4973-4986. [DOI: 10.1039/c9dt00198k] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper presents the photophysical and optoelectronic properties (in the visible to NIR range) of isostructural nona-coordinate Ln complexes with distortedC4vgeometrical structures.
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Affiliation(s)
- Zubair Ahmed
- Lanthanide Research Laboratory
- Department of Chemistry
- Jamia Millia Islamia University
- New Delhi 110 025
- India
| | - Khalid Iftikhar
- Lanthanide Research Laboratory
- Department of Chemistry
- Jamia Millia Islamia University
- New Delhi 110 025
- India
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38
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Ferreira da Rosa PP, Nakanishi T, Kitagawa Y, Seki T, Ito H, Fushimi K, Hasegawa Y. Thermosensitive Seven-Coordinate TbIII
Complexes with LLCT Transitions. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800281] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Pedro Paulo Ferreira da Rosa
- Graduate School of Chemical Sciences and Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome 060-8628 Sapporo Hokkaido Japan
| | - Takayuki Nakanishi
- Faculty of Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome 060-8628 Sapporo Hokkaido Japan
| | - Yuichi Kitagawa
- Faculty of Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome 060-8628 Sapporo Hokkaido Japan
| | - Tomohiro Seki
- Faculty of Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome 060-8628 Sapporo Hokkaido Japan
| | - Hajime Ito
- Faculty of Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome 060-8628 Sapporo Hokkaido Japan
| | - Koji Fushimi
- Faculty of Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome 060-8628 Sapporo Hokkaido Japan
| | - Yasuchika Hasegawa
- Faculty of Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome 060-8628 Sapporo Hokkaido Japan
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39
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Kitagawa Y, Nakanishi T, Fushimi K, Hasegawa Y. An Estimation Method of Metal-Ligand Orbital Mixing in Lanthanide(III) Complexes Using Magnetic Circular Dichroism. ChemistrySelect 2018. [DOI: 10.1002/slct.201800050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yuichi Kitagawa
- Faculty of Engineering; Hokkaido University, Kita-13 Jo, Nishi-8 Chome, Kita-ku; Sapporo, Hokkaido 060-8628 Japan
| | - Takayuki Nakanishi
- Faculty of Engineering; Hokkaido University, Kita-13 Jo, Nishi-8 Chome, Kita-ku; Sapporo, Hokkaido 060-8628 Japan
| | - Koji Fushimi
- Faculty of Engineering; Hokkaido University, Kita-13 Jo, Nishi-8 Chome, Kita-ku; Sapporo, Hokkaido 060-8628 Japan
| | - Yasuchika Hasegawa
- Faculty of Engineering; Hokkaido University, Kita-13 Jo, Nishi-8 Chome, Kita-ku; Sapporo, Hokkaido 060-8628 Japan
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40
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Yanagisawa K, Kitagawa Y, Nakanishi T, Seki T, Fushimi K, Ito H, Hasegawa Y. A Luminescent Dinuclear EuIII
/TbIII
Complex with LMCT Band as a Single-Molecular Thermosensor. Chemistry 2018; 24:1956-1961. [DOI: 10.1002/chem.201705021] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Kei Yanagisawa
- Graduate School of Chemical Sciences and Engineering; Hokkaido University, Kita-13 Jo, Nishi-8 Chome, Kita-ku, Sapporo; Hokkaido 060-8628 Japan
| | - Yuichi Kitagawa
- Faculty of Engineering; Hokkaido University, Kita-13 Jo, Nishi-8 Chome, Kita-ku, Sapporo; Hokkaido 060-8628 Japan
| | - Takayuki Nakanishi
- Faculty of Engineering; Hokkaido University, Kita-13 Jo, Nishi-8 Chome, Kita-ku, Sapporo; Hokkaido 060-8628 Japan
| | - Tomohiro Seki
- Faculty of Engineering; Hokkaido University, Kita-13 Jo, Nishi-8 Chome, Kita-ku, Sapporo; Hokkaido 060-8628 Japan
| | - Koji Fushimi
- Faculty of Engineering; Hokkaido University, Kita-13 Jo, Nishi-8 Chome, Kita-ku, Sapporo; Hokkaido 060-8628 Japan
| | - Hajime Ito
- Faculty of Engineering; Hokkaido University, Kita-13 Jo, Nishi-8 Chome, Kita-ku, Sapporo; Hokkaido 060-8628 Japan
| | - Yasuchika Hasegawa
- Faculty of Engineering; Hokkaido University, Kita-13 Jo, Nishi-8 Chome, Kita-ku, Sapporo; Hokkaido 060-8628 Japan
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41
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Abstract
The structure ofN,N,N-tris(diphenylphosphorylmethyl)amine, C39H36NO3P3, at 103 K has monoclinic (P21/c) symmetry. Two molecules, each with pseudo-threefold rotation symmetry, crystallize in the asymmetric unit of the monoclinic unit cell. The compound acts as ligand for the stabilization of metal ions with flexible coordination enabling three- or fourfold coordination.
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42
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Effect of 2,4,6-tri(2-pyridyl)-1,3,5-triazine on visible and NIR luminescence of lanthanide tris(trifluoroacetylacetonates). J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.06.031] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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43
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Yanagisawa K, Kitagawa Y, Nakanishi T, Akama T, Kobayashi M, Seki T, Fushimi K, Ito H, Taketsugu T, Hasegawa Y. Enhanced Luminescence of Asymmetrical Seven-Coordinate EuIII
Complexes Including LMCT Perturbation. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700815] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Kei Yanagisawa
- Graduate School of Chemical Sciences and Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome, Kita-ku 060-8628 Sapporo Hokkaido Japan
| | - Yuichi Kitagawa
- Faculty of Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome, Kita-ku 060-8628 Sapporo Hokkaido Japan
| | - Takayuki Nakanishi
- Faculty of Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome, Kita-ku 060-8628 Sapporo Hokkaido Japan
| | - Tomoko Akama
- Faculty of Science; Hokkaido University; Kita-10 Jo, Nishi-8 Chome, Kita-ku 060-0810 Sapporo Hokkaido Japan
| | - Masato Kobayashi
- Faculty of Science; Hokkaido University; Kita-10 Jo, Nishi-8 Chome, Kita-ku 060-0810 Sapporo Hokkaido Japan
| | - Tomohiro Seki
- Faculty of Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome, Kita-ku 060-8628 Sapporo Hokkaido Japan
| | - Koji Fushimi
- Faculty of Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome, Kita-ku 060-8628 Sapporo Hokkaido Japan
| | - Hajime Ito
- Faculty of Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome, Kita-ku 060-8628 Sapporo Hokkaido Japan
| | - Tetsuya Taketsugu
- Faculty of Science; Hokkaido University; Kita-10 Jo, Nishi-8 Chome, Kita-ku 060-0810 Sapporo Hokkaido Japan
| | - Yasuchika Hasegawa
- Faculty of Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome, Kita-ku 060-8628 Sapporo Hokkaido Japan
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44
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Kitagawa Y, Ohno R, Nakanishi T, Fushimi K, Hasegawa Y. Solvent-dependent dual-luminescence properties of a europium complex with helical π-conjugated ligands. Photochem Photobiol Sci 2017; 16:683-689. [DOI: 10.1039/c7pp00007c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A europium(iii) complex with a large π-conjugated helical ligand, tris(hexafluoroacetylacetonato)europium(iii)bis((pentahelicenyl)diphenylphosphine oxide) (Eu(hfa)3(HPO)2), exhibits dual luminescence excited at the π–π* transition band.
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Affiliation(s)
| | - Ryohsuke Ohno
- Graduate School of Chemical Sciences and Engineering
- Hokkaido University
- Sapporo
- Japan
| | | | - Koji Fushimi
- Faculty of Engineering
- Hokkaido University
- Sapporo
- Japan
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45
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Ahmed Z, Aderne RE, Kai J, Resende JALC, Padilla-Chavarría HI, Cremona M. Near infrared organic light emitting devices based on a new erbium(iii) β-diketonate complex: synthesis and optoelectronic investigations. RSC Adv 2017. [DOI: 10.1039/c6ra27473k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This paper deals with the synthesis of a new near infra-red emitting Er(iii) β-diketonate complex of low coordinate structure, its characterisation and fabrication of organic light emitting diode using the complex as emitting layer.
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Affiliation(s)
- Zubair Ahmed
- Department of Physics
- Pontifícia Universidade Católica do Rio de Janeiro
- PUC-Rio
- Rio de Janeiro
- Brazil
| | - Rian E. Aderne
- Department of Physics
- Pontifícia Universidade Católica do Rio de Janeiro
- PUC-Rio
- Rio de Janeiro
- Brazil
| | - Jiang Kai
- Department of Chemistry
- Pontifícia Universidade Católica do Rio de Janeiro
- PUC-Rio
- Rio de Janeiro
- Brazil
| | - Jackson A. L. C. Resende
- Instituto de Ciências Extas e da Terra
- Centro Universitário do Araguaia
- Universidade Federal do Mato Grosso
- Barra do Garças
- Brazil
| | | | - Marco Cremona
- Department of Physics
- Pontifícia Universidade Católica do Rio de Janeiro
- PUC-Rio
- Rio de Janeiro
- Brazil
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46
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Ahmed Z, Aderne RE, Kai J, Resende JA, Cremona M. Synthesis of a low-coordinate erbium (III) β-diketonate complex assembled by opto-electronically active 1,3-diphenyl-1,3-propanedione and triphenylphosphine oxide ligands. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.08.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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47
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Synthesis and NIR-optoelectronic properties of a seven-coordinate ytterbium tris β-diketonate complex with C3 geometrical structure. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.06.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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48
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Structure elucidation by sparkle/RM1, effect of lanthanide contraction and photophysical properties of lanthanide(III) trifluoroacetylacetonate complexes with 1,10-phenanthroline. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2016.03.018] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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49
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Kitagawa Y, Wada S, Yanagisawa K, Nakanishi T, Fushimi K, Hasegawa Y. Molecular Design Guidelines for Large Magnetic Circular Dichroism Intensities in Lanthanide Complexes. Chemphyschem 2016; 17:845-9. [PMID: 26789658 DOI: 10.1002/cphc.201501124] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Yuichi Kitagawa
- Faculty of Engineering; Hokkaido University; North-13 West-8, Kita-ku Sapporo Hokkaido 060-8628 Japan
| | - Satoshi Wada
- Faculty of Engineering; Hokkaido University; North-13 West-8, Kita-ku Sapporo Hokkaido 060-8628 Japan
| | - Kei Yanagisawa
- Faculty of Engineering; Hokkaido University; North-13 West-8, Kita-ku Sapporo Hokkaido 060-8628 Japan
| | - Takayuki Nakanishi
- Faculty of Engineering; Hokkaido University; North-13 West-8, Kita-ku Sapporo Hokkaido 060-8628 Japan
| | - Koji Fushimi
- Faculty of Engineering; Hokkaido University; North-13 West-8, Kita-ku Sapporo Hokkaido 060-8628 Japan
| | - Yasuchika Hasegawa
- Faculty of Engineering; Hokkaido University; North-13 West-8, Kita-ku Sapporo Hokkaido 060-8628 Japan
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