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Kumar M, Ahlawat P, Kumari P, Lather V, Khatkar A, Sehrawat H, Kumar R. Preparation and Judd-Ofelt Analysis of Warm Red Luminescent Eu 3+ Complexes for Semiconductor Lasing Devices. J Fluoresc 2024:10.1007/s10895-024-03780-z. [PMID: 38904873 DOI: 10.1007/s10895-024-03780-z] [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: 03/13/2024] [Accepted: 06/06/2024] [Indexed: 06/22/2024]
Abstract
Six novel red photoluminescent Eu3+ complexes with 3-formyl chromone as the primary sensitizer (L) were synthesized using the solution precipitation method. These complexes are [Eu(L3).X] where X is 2H2O (C1), phen (C2), neo (C3), bipy (C4), dmph (C5), and biquno (C6). These complexes were characterized by elemental analysis, EDAX analysis, SEM, FT-IR, thermo-gravimetric analysis (TGA/DTA) and photoluminescence spectra. The transition rates, quantum efficiency, and J-O intensity parameters were calculated using emission data and luminescence decay time (τ). Complexes exhibit a strong emission peak (5D0 → 7F2) of the Eu3+ ion in their luminescence emission spectra in solid and solution states, making them an effective emitter of the red color in OLEDs. The branching ratio of these complexes ranges from 80.67-82.92 in solid and 50.53-62.65 in solution state; CIE color coordinate of complexes falls in the red region. The color purity ranges [CP(%)] values for solid 95.26-97.27% and for solution ranges 85.11-93.43%. Correlated color temperature (CCT) of the complexes (C1-C6) ranged from 2710 to 3049 K in the solid state and 1775 to 2450 K in the solution state. These complexes are promising red emitters in OLEDs, semiconductors, and leasing devices.
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Affiliation(s)
- Manoj Kumar
- University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, 124001, India
| | - Pratibha Ahlawat
- University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, 124001, India
| | - Poonam Kumari
- University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, 124001, India
| | - Vaishnavi Lather
- Shri Guru Ram Rai Institute of medical and Health Sciences, Dehradun, 248001, India
| | - Aarti Khatkar
- Department of Chemistry, Deenbandhu Chhotu Ram University of Science and Technology, Sonipat, 131039, India
| | - Harkesh Sehrawat
- University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, 124001, India
| | - Rajesh Kumar
- University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, 124001, India.
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2
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Luminous lanthanide diketonates: Review on synthesis and optoelectronic characterizations. Inorganica Chim Acta 2023. [DOI: 10.1016/j.ica.2023.121406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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3
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Kumari P, Khatri S, Ahlawat P, Hooda P, Taxak VB, Khatkar SP, Kumar R. Designing of europium(III) complexes with β-keto carboxylic acid and nitrogen-containing secondary ligand possessing optoelectrical, Urbach energy and lasing properties. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02118-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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4
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Ohmagari H, Marets N, Kamata J, Yoneyama M, Miyauchi T, Takahashi Y, Yamamoto Y, Ogihara Y, Saito D, Goto K, Ishii A, Kato M, Hasegawa M. Thermosensitive visible-light-excited visible-/NIR-luminescent complexes with lanthanide sensitized by the π-electronic system through intramolecular H-bonding. Front Chem 2022; 10:1047960. [PMID: 36569958 PMCID: PMC9768490 DOI: 10.3389/fchem.2022.1047960] [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: 09/19/2022] [Accepted: 11/09/2022] [Indexed: 12/13/2022] Open
Abstract
Visible-luminescent lanthanide (LnL) complexes with a highly planar tetradentate ligand were successfully developed for a visible-light solid-state excitation system. L was designed by using two 2-hydroxy-3-(2-pyridinyl)-benzaldehyde molecules bridged by ethylenediamine, which was then coordinated to a series of Ln ions (Ln = Nd, Sm, Eu, Gd, Tb, Dy, and Yb). From the measurement of single-crystal X-ray analysis of EuL, two phenolic O atoms and two imine N atoms in L were coordinated to the Eu ion, and each π-electronic system took coplanar with the edged-pyridine moiety through an intramolecular hydrogen bond. The enol group on the phenolic skeleton changed to the keto form, and the pyridine was protonated. Thus, intramolecular proton transfer occurred in L after the complexation. Other complexes take isostructure. The space group is P-1, and the c-axis shrinks with decreasing temperature without a phase transition in EuL. The yellow color caused by the planar structure of L can sensitize ff emission by visible light, and the luminescence color of each complex depends on central Ln ions. Furthermore, a phosphorescence band also appeared at rt with ff emission in LnL. Drastic temperature dependence of luminescence was clarified quantitatively.
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Affiliation(s)
- Hitomi Ohmagari
- Department of Chemistry and Biological Science, Aoyama Gakuin University, Sagamihara, Japan,Mirai Molecular Materials Design Institute, Aoyama Gakuin University, Sagamihara, Japan
| | - Nicolas Marets
- Department of Chemistry and Biological Science, Aoyama Gakuin University, Sagamihara, Japan,Mirai Molecular Materials Design Institute, Aoyama Gakuin University, Sagamihara, Japan
| | - Jun Kamata
- Department of Chemistry and Biological Science, Aoyama Gakuin University, Sagamihara, Japan
| | - Mayo Yoneyama
- Department of Chemistry and Biological Science, Aoyama Gakuin University, Sagamihara, Japan
| | - Takumi Miyauchi
- Department of Chemistry and Biological Science, Aoyama Gakuin University, Sagamihara, Japan
| | - Yuta Takahashi
- Department of Chemistry and Biological Science, Aoyama Gakuin University, Sagamihara, Japan
| | - Yukina Yamamoto
- Department of Chemistry and Biological Science, Aoyama Gakuin University, Sagamihara, Japan
| | - Yuto Ogihara
- Department of Chemistry and Biological Science, Aoyama Gakuin University, Sagamihara, Japan
| | - Daisuke Saito
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, Japan,Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University, Sanda, Japan
| | - Kenta Goto
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka, Japan
| | - Ayumi Ishii
- Department of Natural and Environmental Science, Teikyo University of Science, Yamanashi, Japan
| | - Masako Kato
- Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University, Sanda, Japan
| | - Miki Hasegawa
- Department of Chemistry and Biological Science, Aoyama Gakuin University, Sagamihara, Japan,Mirai Molecular Materials Design Institute, Aoyama Gakuin University, Sagamihara, Japan,*Correspondence: Miki Hasegawa,
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5
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Wu L, Fang Y, Zuo W, Wang J, Wang J, Wang S, Cui Z, Fang W, Sun HL, Li Y, Chen X. Excited-State Dynamics of Crossing-Controlled Energy Transfer in Europium Complexes. JACS AU 2022; 2:853-864. [PMID: 35557757 PMCID: PMC9088298 DOI: 10.1021/jacsau.1c00584] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 03/08/2022] [Accepted: 03/08/2022] [Indexed: 06/15/2023]
Abstract
Photosensitized energy transfer (EnT) phenomena occur frequently in a variety of photophysical and photochemical processes and have traditionally been treated with the donor-acceptor distance-dependent Förster and Dexter models. However, incorrect arguments and formulae were employed by ignoring energy resonance conditions and the selection rules of the state-to-state transition in special cases, especially for the sensitive intramolecular EnT of lanthanide complexes. Herein, we proposed an innovative model of energy-degeneracy-crossing-controlled EnT, which can be experimentally confirmed by time-resolved two-dimensional photoluminescence measurements. The computationally determined energy resonance region provides the most effective channel to achieve metal-to-ligand EnT beyond the distance-dependent model and sensitively bifurcates into symmetry-allowed or -forbidden channels for some representative europium antenna complexes. The outcomes of the multidisciplinary treatment contribute to a complementary EnT model that can be tuned by introducing a phosphorescence modulator and altering the antenna-related parameters of the ligand-centered energy level of the 3ππ* state and its spin-orbit coupling for the 3ππ* → S0 * transition through mechanism-guided crystal engineering and should motivate further development of mechanistic models and applications.
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Affiliation(s)
- Liangliang Wu
- Key
Laboratory of Theoretical and Computational Photochemistry of the
Ministry of Education, Department of Chemistry, Beijing Normal University, Xin-wai-da-jie No. 19, Beijing 100875, China
| | - Yu Fang
- Key
Laboratory of Theoretical and Computational Photochemistry of the
Ministry of Education, Department of Chemistry, Beijing Normal University, Xin-wai-da-jie No. 19, Beijing 100875, China
| | - Wanlong Zuo
- Beijing
National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, No.8, 3rd South Street, Zhongguancun, Haidian District, Beijing 100190, China
- College
of Physics and Electric Information, Anhui
Normal University, Wuhu 241000, China
| | - Juanjuan Wang
- Key
Laboratory of Theoretical and Computational Photochemistry of the
Ministry of Education, Department of Chemistry, Beijing Normal University, Xin-wai-da-jie No. 19, Beijing 100875, China
| | - Ju Wang
- State
Key Laboratory for Artificial Microstructure and Mesoscopic Physics,
Department of Physics, Peking University, Beijing 100871, China
| | - Shufeng Wang
- State
Key Laboratory for Artificial Microstructure and Mesoscopic Physics,
Department of Physics, Peking University, Beijing 100871, China
| | - Zhifeng Cui
- College
of Physics and Electric Information, Anhui
Normal University, Wuhu 241000, China
| | - Weihai Fang
- Key
Laboratory of Theoretical and Computational Photochemistry of the
Ministry of Education, Department of Chemistry, Beijing Normal University, Xin-wai-da-jie No. 19, Beijing 100875, China
| | - Hao-Ling Sun
- Key
Laboratory of Theoretical and Computational Photochemistry of the
Ministry of Education, Department of Chemistry, Beijing Normal University, Xin-wai-da-jie No. 19, Beijing 100875, China
| | - Yunliang Li
- Beijing
National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, No.8, 3rd South Street, Zhongguancun, Haidian District, Beijing 100190, China
- School
of Physical Sciences, University of Chinese
Academy of Sciences, Beijing 100049, China
- Songshan
Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - Xuebo Chen
- Key
Laboratory of Theoretical and Computational Photochemistry of the
Ministry of Education, Department of Chemistry, Beijing Normal University, Xin-wai-da-jie No. 19, Beijing 100875, China
- College
of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
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Li XZ, Tian CB, Sun QF. Coordination-Directed Self-Assembly of Functional Polynuclear Lanthanide Supramolecular Architectures. Chem Rev 2022; 122:6374-6458. [PMID: 35133796 DOI: 10.1021/acs.chemrev.1c00602] [Citation(s) in RCA: 82] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Lanthanide supramolecular chemistry is a fast growing and intriguing research field due to the unique photophysical, magnetic, and coordination properties of lanthanide ions (LnIII). Compared with the intensively investigated mononuclear Ln-complexes, polymetallic lanthanide supramolecular assemblies offer more structural superiority and functional advantages. In recent decades, significant progress has been made in polynuclear lanthanide supramolecules, varying from structural evolution to luminescent and magnetic functional materials. This review summarizes the design principles in ligand-induced coordination-driven self-assembly of polynuclear Ln-structures and intends to offer guidance for the construction of more elegant Ln-based architectures and optimization of their functional performances. Design principles concerning the water solubility and chirality of the lanthanide-organic assemblies that are vital in extending their applications are emphasized. The strategies for improving the luminescent properties and the applications in up-conversion, host-guest chemistry, luminescent sensing, and catalysis have been summarized. Magnetic materials based on supramolecular assembled lanthanide architectures are given in an individual section and are classified based on their structural features. Challenges remaining and perspective directions in this field are also briefly discussed.
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Affiliation(s)
- Xiao-Zhen Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China
| | - Chong-Bin Tian
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China
| | - Qing-Fu Sun
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China
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7
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Wankar S, Khan I, Pandit UJ. Exploration of photophysical behavior of lanthanide complex and its hybrids. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 254:119629. [PMID: 33721749 DOI: 10.1016/j.saa.2021.119629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 02/06/2021] [Accepted: 02/09/2021] [Indexed: 06/12/2023]
Abstract
The present work envisioned to synthesize europium complexes [Eu-(L)3-phen] (where, L is 4,4,4-Trifluoro-1-(2-furyl)-1,3-butanedione (TFB), phen-1,10 -phenanthroline) and its hybrids via embedding pure complex into silica and PMMA. The sol-gel method was adopted for incorporating europium complex into silica matrix as [Eu-(L)3-phen]-silica and this method was proved to be highly effective and excellent approach for obtaining such lanthanide hybrid material. Another hybrid was prepared by incorporating complex into PMMA (polymethyl methyl acrylate), an organic polymer, transformed into flexible thin film. The structure of the [Eu-(L)3-phen] was elucidated using various spectroscopic techniques, moreover Sparkle model calculation were utilized for prediction of ground state geometry. The photophysical properties of pure complex [Eu-(L)3-phen] and its hybrids were studied in detail and compared. The incorporation of pure complex into PMMA is highly supportive to enhance the stability of complex as evident from enhanced luminescent intensity, intensity ratio value 6.52, longer lifetime value 842μs and higher quantum efficiency 77% over pure complex. The organic polymer PMMA is expected to interact well with europium complex via antenna effect. The use of such inorganic and organic entities for hybrid preparation purposefully overcomes the flaws of lanthanide complexes in terms of thermal stability and mechanical strength. The promising and fascinating properties of synthesized lanthanide hybrids are fruitful in material research.
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Affiliation(s)
- Sneha Wankar
- Department of Chemistry, Visvesvaraya National Institute Of Technology, Nagpur, Maharashtra 440010, India
| | - Imran Khan
- Department of Chemistry, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, M.P. 470003, India
| | - Umar Jan Pandit
- Department of Chemistry, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, M.P. 470003, India
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8
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Zhang M, Wu X, Hu Z, Xiang Z, Song T, Lu F. A Highly Efficient and Durable Fluorescent Paper Produced from Bacterial Cellulose/Eu Complex and Cellulosic Fibers. NANOMATERIALS 2019; 9:nano9091322. [PMID: 31540169 PMCID: PMC6781274 DOI: 10.3390/nano9091322] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 09/05/2019] [Accepted: 09/12/2019] [Indexed: 01/31/2023]
Abstract
The general method of producing fluorescent paper by coating fluorescent substances onto paper base faces the problems of low efficiency and poor durability. Bacterial cellulose (BC) with its nanoporous structure can be used to stabilize fluorescent particles. In this study, we used a novel method to produce fluorescent paper by first making Eu/BC complex and then processing the complex and cellulosic fibers into composite paper sheets. For this composting method, BC can form very stable BC/Eu complex due to its nanoporous structure, while the plant-based cellulosic fibers reduce the cost and provide stiffness to the materials. The fluorescent paper demonstrated a great fluorescent property and efficiency. The ultraviolet absorbance or the fluorescent intensity of the Eu-BC fluorescent paper increased with the increase of Eu-BC content but remained little changed after Eu-BC content was higher than 5%. After folding 200 times, the fluorescence intensity of fluorescent paper decreased by only 0.7%, which suggested that the Eu-BC fluorescent paper has great stability and durability.
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Affiliation(s)
- Mingquan Zhang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; (M.Z.); (X.W.); (Z.H.); (T.S.)
| | - Xiao Wu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; (M.Z.); (X.W.); (Z.H.); (T.S.)
| | - Zhenhua Hu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; (M.Z.); (X.W.); (Z.H.); (T.S.)
| | - Zhouyang Xiang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; (M.Z.); (X.W.); (Z.H.); (T.S.)
- Correspondence: (Z.X.); (F.L.)
| | - Tao Song
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; (M.Z.); (X.W.); (Z.H.); (T.S.)
| | - Fachuang Lu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; (M.Z.); (X.W.); (Z.H.); (T.S.)
- Guangdong Engineering Research Center for Green Fine Chemicals, Guangzhou 510640, China
- Correspondence: (Z.X.); (F.L.)
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9
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Yang P. Synthesis, Structure, and Luminescence Properties of Rare Earth Complexes with β-Diketone containing Imidazole Group. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ping Yang
- School of Environment; Jinan University; 511443 Guangzhou P. R. China
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10
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Gu Y, Huang W, Chen S, Wang X. Bismuth(III) Triflate Catalyzed Three-Component Reactions of Indoles, Ketones, and α-Bromoacetaldehyde Acetals Enable Indole-to-Carbazole Transformation. Org Lett 2018; 20:4285-4289. [DOI: 10.1021/acs.orglett.8b01707] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yanlong Gu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, 430074, Wuhan, China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, 730000, Lanzhou, China
| | - Wenbo Huang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, 430074, Wuhan, China
| | - Shaomin Chen
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, 430074, Wuhan, China
| | - Xin Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, 430074, Wuhan, China
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11
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Pugachov DE, Kostryukova TS, Zatonsky GV, Vatsadze SZ, Vasil’ev NV. Fluorinated tetraketone derivatives of N-substituted carbazoles and their Eu(III) complexes for fluorescence immunoassay. Chem Heterocycl Compd (N Y) 2018. [DOI: 10.1007/s10593-018-2300-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Electronic structure of europium(iii) acrylate and methacrylate: an X-ray photoelectron spectroscopy and quantum chemical study. Russ Chem Bull 2018. [DOI: 10.1007/s11172-017-1984-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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13
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Zhang J, Gong S, Yu J, Li P, Zhang X, He Y, Zhou J, Shi R, Li H, Peng A, Wang J. Thermally Stable White Emitting Eu 3+ Complex@Nanozeolite@Luminescent Glass Composite with High CRI for Organic-Resin-Free Warm White LEDs. ACS APPLIED MATERIALS & INTERFACES 2017; 9:7272-7281. [PMID: 28177608 DOI: 10.1021/acsami.6b15739] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nowadays, it is still a great challenge for lanthanide complexes to be applied in solid state lighting, especially for high-power LEDs because they will suffer severe thermal-induced luminescence quenching and transmittance loss when LEDs are operated at high current. In this paper, we have not only obtained high efficient and thermally chemical stable red emitting hybrid material by introducing europium complex into nanozeolite (NZ) functionalized with the imidazolium-based stopper but also abated its thermal-induced transmittance loss and luminescence quenching behavior via coating it onto a heat-resistant luminescent glass (LG) with high thermal conductivity (1.07 W/mK). The results show that the intensity at 400 K for Eu(PPO)n-C4Si@NZ@LG remains 21.48% of the initial intensity at 300 K, which is virtually 153 and 13 times the intensity of Eu(PPO)3·2H2O and Eu(PPO)n-C4Si@NZ, respectively. Moreover, an organic-resin-free warm white LEDs device with a low CCT of 3994K, a high Ra of 90.2 and R9 of 57.9 was successfully fabricated simply by combining NUV-Chip-On-Board with a warm white emitting glass-film composite (i.e., yellowish-green emitting luminescent glass coated with red emitting hybrid film). Our method and results provide a feasible and promising way for lanthanide complexes to be used for general illumination in the future.
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Affiliation(s)
- Jinhui Zhang
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University , Guangzhou, Guangdong 510275, PR China
| | - Shuming Gong
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University , Guangzhou, Guangdong 510275, PR China
| | - Jinbo Yu
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University , Guangzhou, Guangdong 510275, PR China
| | - Peng Li
- School of Chemical Engineering and Technology, Hebei University of Technology , Guangrong Dao 8, Hongqiao District, Tianjin 300130, China
| | - Xuejie Zhang
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University , Guangzhou, Guangdong 510275, PR China
| | - Yuwei He
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University , Guangzhou, Guangdong 510275, PR China
| | - Jianbang Zhou
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University , Guangzhou, Guangdong 510275, PR China
| | | | - Huanrong Li
- School of Chemical Engineering and Technology, Hebei University of Technology , Guangrong Dao 8, Hongqiao District, Tianjin 300130, China
| | - Aiyun Peng
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University , Guangzhou, Guangdong 510275, PR China
| | - Jing Wang
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University , Guangzhou, Guangdong 510275, PR China
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14
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Biju S, Xu LJ, Hora Alves MA, Freire RO, Chen ZN. Bright orange and red light-emitting diodes of new visible light excitable tetrakis-Ln-β-diketonate (Ln = Sm3+, Eu3+) complexes. NEW J CHEM 2017. [DOI: 10.1039/c6nj03450k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A new β-diketonate ligand and its visible light excitable Sm3+, Eu3+-complexes were designed and synthesized; these complexes showed highly efficient photoluminescence and electroluminescence properties.
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Affiliation(s)
- Silvanose Biju
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Science
- Fuzhou
- China
| | - Liang-Jin Xu
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Science
- Fuzhou
- China
| | - Marcelo Augusto Hora Alves
- Pople Computational Chemistry Laboratory
- Departamento de Quımica
- UniversidadeFederal de Sergipe
- São Cristóvão
- Brazil
| | - Ricardo Oliveira Freire
- Pople Computational Chemistry Laboratory
- Departamento de Quımica
- UniversidadeFederal de Sergipe
- São Cristóvão
- Brazil
| | - Zhong-Ning Chen
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Science
- Fuzhou
- China
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15
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Irfanullah M, Sharma DK, Chulliyil R, Layek A, De S, Chowdhury A. Heterogeneity in optical properties of near white-light emissive europium complex species revealed by spectroscopy of single nanoaggregates. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2016.10.065] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Affiliation(s)
- Ruirui Yun
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Functional Molecular Solids, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, People’s Republic of China
| | - Yaqin Jiang
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Functional Molecular Solids, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, People’s Republic of China
| | - Hongqun Wu
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Functional Molecular Solids, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, People’s Republic of China
| | - Shizhong Luo
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Functional Molecular Solids, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, People’s Republic of China
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17
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Gangan TU, Sreenadh S, Reddy M. Visible-light excitable highly luminescent molecular plastic materials derived from Eu3+-biphenyl based β-diketonate ternary complex and poly(methylmethacrylate). J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2016.06.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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18
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Synthesis, NMR, photoluminescence studies and intramolecular energy transfer process of europium(III) complexes. J Fluor Chem 2016. [DOI: 10.1016/j.jfluchem.2016.07.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Nishino T, Yamada Y, Akine S, Sugimoto K, Tanaka K. Kinetically "locked" metallomacrocycle. Dalton Trans 2016; 45:3831-7. [PMID: 26820843 DOI: 10.1039/c5dt04635a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Self-assembly based on reversible metal-ligand bond formation is useful for the synthesis of discrete supramolecular nanoarchitectures. However, the architectures constructed by this technique sometimes suffer from kinetic instability due to the dissociation of metal-ligand bonds, especially under highly diluted conditions or in the presence of competitive ligands or metal ions. In this study, a kinetically stabilized metallomacrocycle was synthesized in one pot via the combination of metal-mediated self-assembly and subsequent oxidative "locking" of the coordination bonds. The macrocycle consists of four Co ions and four bis-bidentate ligands L(2-). The complexation of labile Co(II) ions with the ligands afforded the macrocycle with four-fold rotational symmetry, exhibiting the right-angled geometries of the β-diketonate ligands on the carbazole. The subsequent oxidation of the Co(II) ions inside the macrocycle into Co(III) ions made the metal-ligand bonds almost inert, thus affording a kinetically locked 4 : 4 metallomacrocycle. This macrocycle showed high stability even in the presence of an excess amount of competitive ligands. X-ray crystallography of the macrocycle indicated that it assembled in a columnar manner, forming one-dimensional nanochannels in the middle of the column.
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Affiliation(s)
- Toshio Nishino
- Department of Chemistry, Faculty of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602, Japan.
| | - Yasuyuki Yamada
- Department of Chemistry, Faculty of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602, Japan. and Research Center for Materials Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602, Japan
| | - Shigehisa Akine
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Kunihisa Sugimoto
- Japan Synchrotron Radiation Research Institute, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo, 679-5198, Japan
| | - Kentaro Tanaka
- Department of Chemistry, Faculty of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602, Japan.
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20
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Imai Y, Kawai T, Yuasa J. OFF-ON-OFF Dual Emission at Visible and UV Wavelengths from Carbazole Functionalized β-Diketonate Europium(III) Complex. J Phys Chem A 2016; 120:4131-8. [PMID: 27241957 DOI: 10.1021/acs.jpca.6b04414] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
This work demonstrates dual emission "OFF-ON-OFF" switching at visible and UV wavelengths of a carbazole functionalized β-diketone (LH) by a simple change of a europium(III) ion (Eu(3+)) concentration in the submicromolar concentration range. In the presence of 0.25 equiv of Eu(3+) (5 μM), LH forms a luminescent 4:1 complex ([Eu(3+)(L(-))4](-)) exhibiting dual emission at 357 and 613 nm resulting from the local excitation of the carbazole ring and ligand-sensitized luminescence from the Eu(3+)-β-diketonate unit, respectively. The 4:1 complex begins to convert into a 2:1 complex ([Eu(3+)(L(-))2](+)) via a 3:1 complex [Eu(3+)(L(-))3] above a molar ratio ([Eu(3+)]/[LH]) of 0.25, which provides the opportunity for binding of solvent methanol molecules to the vacant site of the Eu(3+) ion in the complex ([Eu(3+)(L(-))2(MeOH)n](+)). The OH oscillators of coordinated methanol molecules facilitate the nonradiative pathway of the Eu(3+) emission; hence the emission at 613 nm almost disappears above the 0.50 equivalent of Eu(3+) (11 μM), while the UV emission at 357 nm remains mostly constant over the whole concentration range.
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Affiliation(s)
- Yuki Imai
- Graduate School of Materials Science, Nara Institute of Science and Technology , 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Tsuyoshi Kawai
- Graduate School of Materials Science, Nara Institute of Science and Technology , 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Junpei Yuasa
- Graduate School of Materials Science, Nara Institute of Science and Technology , 8916-5 Takayama, Ikoma, Nara 630-0192, Japan.,Precursory Research for Embryonic Science and Technology (PRESTO), Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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21
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Quadruple-stranded Eu-helicate assembled from bis-β-diketonate: Its stability towards metal ions. Chem Res Chin Univ 2016. [DOI: 10.1007/s40242-016-6009-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Wang Z, Yang H, He P, He Y, Zhao J, Tang H. A highly-efficient blue-light excitable red phosphor: intramolecular π-stacking interactions in one dinuclear europium(iii) complex. Dalton Trans 2016; 45:2839-44. [PMID: 26673545 DOI: 10.1039/c5dt04407c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A series of ternary dinuclear europium(iii) complexes [Eu2(2,7-BTFDBC)3-n(DBM)2n(Phen)2] (n = 0, 1, or 2) were synthesized by using 2,7-bis(4'4'4'-trifluoro-1,3-dioxobutyl)-(9-ethyl-9H-carbazole) (2,7-BTFDBC), dibenzoylmethane (DBM), 1,10-phenanthroline (Phen) and europium(iii) ions. All these complexes display a broad excitation band in the blue region and high intensity emission with high colour purity. The intensity of emission significantly increases with the increase of DBM in [Eu2(2,7-BTFDBC)3-n(DBM)2n(Phen)2] (n = 0, 1, or 2). The theoretical predictions of the molecular geometry and electronic absorption spectrum of [Eu2(2,7-BTFDBC)(DBM)4(Phen)2] confirm that the pendant phenyl domains engage in multiple T-shaped and parallel-displaced π-stacking interactions with the coordination sphere of two europium(iii) centers. Using [Eu2(2,7-BTFDBC)(DBM)4(Phen)2] as a red phosphor, a single red LED has been obtained with a ∼460 nm-emitting GaN chip.
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Affiliation(s)
- Zhengliang Wang
- Key Laboratory of Comprehensive Utilization of Mineral Resource in Ethnic Regions, Key Laboratory of Resource Clean Conversion in Ethnic Regions, Education Department of Yunnan, School of Chemistry & Environment, Yunnan Minzu University, Kunming, 650500, P. R. China.
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23
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Pan M, Du BB, Zhu YX, Yue MQ, Wei ZW, Su CY. Highly Efficient Visible-to-NIR Luminescence of Lanthanide(III) Complexes with Zwitterionic Ligands Bearing Charge-Transfer Character: Beyond Triplet Sensitization. Chemistry 2016; 22:2440-51. [DOI: 10.1002/chem.201504344] [Citation(s) in RCA: 104] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Indexed: 12/26/2022]
Affiliation(s)
- Mei Pan
- MOE Laboratory of Bioinorganic and Synthetic Chemistry; State Key Laboratory of Optoelectronic Materials and Technologies; Lehn Institute of Functional Materials; School of Chemistry and Chemical Engineering; Sun Yat-Sen University; Guangzhou 510275 P. R. China
- State Key Laboratory of Structural Chemistry; Fujian Institute of Research on the Structure of Matter; Chinese Academy of Sciences; Fuzhou 350002 P. R. China
| | - Bin-Bin Du
- MOE Laboratory of Bioinorganic and Synthetic Chemistry; State Key Laboratory of Optoelectronic Materials and Technologies; Lehn Institute of Functional Materials; School of Chemistry and Chemical Engineering; Sun Yat-Sen University; Guangzhou 510275 P. R. China
| | - Yi-Xuan Zhu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry; State Key Laboratory of Optoelectronic Materials and Technologies; Lehn Institute of Functional Materials; School of Chemistry and Chemical Engineering; Sun Yat-Sen University; Guangzhou 510275 P. R. China
| | - Mei-Qin Yue
- MOE Laboratory of Bioinorganic and Synthetic Chemistry; State Key Laboratory of Optoelectronic Materials and Technologies; Lehn Institute of Functional Materials; School of Chemistry and Chemical Engineering; Sun Yat-Sen University; Guangzhou 510275 P. R. China
| | - Zhang-Wen Wei
- MOE Laboratory of Bioinorganic and Synthetic Chemistry; State Key Laboratory of Optoelectronic Materials and Technologies; Lehn Institute of Functional Materials; School of Chemistry and Chemical Engineering; Sun Yat-Sen University; Guangzhou 510275 P. R. China
| | - Cheng-Yong Su
- MOE Laboratory of Bioinorganic and Synthetic Chemistry; State Key Laboratory of Optoelectronic Materials and Technologies; Lehn Institute of Functional Materials; School of Chemistry and Chemical Engineering; Sun Yat-Sen University; Guangzhou 510275 P. R. China
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 P. R. China
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24
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25
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Chen P, Li H, Sun W, Tang J, Zhang L, Yan P. Crystallization of triple- and quadruple-stranded dinuclear bis-β-diketonate-Dy(iii) helicates: single molecule magnetic behavior. CrystEngComm 2015. [DOI: 10.1039/c5ce01067e] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Quadruple-stranded Dy-helicates are crystallographically locked through deliberate design on the bis-β-diketonate ligand. The triple-stranded helicates could be tuned by the incorporation of phenanthroline, which contributes to strengthening the anisotropy barrier as well.
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Affiliation(s)
- Peng Chen
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080, PR China
| | - Hongfeng Li
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080, PR China
| | - Wenbin Sun
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080, PR China
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, PR China
| | - Lei Zhang
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080, PR China
| | - Pengfei Yan
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080, PR China
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26
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Usha Gangan TV, Reddy MLP. Tuning of the excitation wavelength in Eu3+-aminophenyl based polyfluorinated β-diketonate complexes: a red-emitting Eu3+-complex encapsulated in a silica/polymer hybrid material excited by blue light. Dalton Trans 2015; 44:15924-37. [DOI: 10.1039/c5dt02371h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A series of new antenna complexes of Eu3+ based on aminophenyl β-diketonate ligands was designed and their photophysical properties were evaluated.
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Affiliation(s)
- T. V. Usha Gangan
- AcSIR-Academy of Scientific & Innovative Research
- CSIR-NIIST Campus
- Thiruvananthapuram
- India
- Materials Science and Technology Division
| | - M. L. P. Reddy
- AcSIR-Academy of Scientific & Innovative Research
- CSIR-NIIST Campus
- Thiruvananthapuram
- India
- Materials Science and Technology Division
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27
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Irfanullah M, Sharma DK, Chulliyil R, Chowdhury A. Europium-doped LaF3nanocrystals with organic 9-oxidophenalenone capping ligands that display visible light excitable steady-state blue and time-delayed red emission. Dalton Trans 2015; 44:3082-91. [DOI: 10.1039/c4dt03249g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Visible light excitable 9-oxidophenalenone-coated LaF3:Eu NCs display steady-state blue and time-delayed red emission; capping ligands act as probes to reveal three different Eu3+sites with distinct emission properties.
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Affiliation(s)
- Mir Irfanullah
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai
- India
| | | | - Ramya Chulliyil
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai
- India
| | - Arindam Chowdhury
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai
- India
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28
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Francis B, Heering C, Freire RO, Reddy MLP, Janiak C. Achieving visible light excitation in carbazole-based Eu3+–β-diketonate complexes via molecular engineering. RSC Adv 2015. [DOI: 10.1039/c5ra18819a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
A series of visible light excited Eu3+–carbazole based β-diketonate complexes has been developed by molecular engineering.
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Affiliation(s)
- Biju Francis
- CSIR-Network of Institutes for Solar Energy
- National Institute for Interdisciplinary Science & Technology (NIIST)
- Thiruvananthapuram-695 019
- India
- Universität Düsseldorf
| | - Christian Heering
- Universität Düsseldorf
- Institut für Anorganische Chemie 1
- Universitätsstr. 1
- 40225 Düsseldorf
- Germany
| | - Ricardo O. Freire
- Pople Computational Chemistry Laboratory
- Universidade Federal de Sergipe
- Sao Cristovaáo
- Brazil
| | - M. L. P. Reddy
- CSIR-Network of Institutes for Solar Energy
- National Institute for Interdisciplinary Science & Technology (NIIST)
- Thiruvananthapuram-695 019
- India
| | - Christoph Janiak
- Universität Düsseldorf
- Institut für Anorganische Chemie 1
- Universitätsstr. 1
- 40225 Düsseldorf
- Germany
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29
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Chu W, Sun Q, Yao X, Yan P, An G, Li G. Luminescent single molecule magnets of a series of β-diketone dysprosium complexes. RSC Adv 2015. [DOI: 10.1039/c5ra17358b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of three β-diketone mononuclear Dy(iii) complexes exhibit bifunctional properties of single molecule magnet and luminescence.
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Affiliation(s)
- Wenyi Chu
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin
- P. R. China
| | - Qingyan Sun
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin
- P. R. China
| | - Xu Yao
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin
- P. R. China
| | - Pengfei Yan
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin
- P. R. China
| | - Guanghui An
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin
- P. R. China
| | - Guangming Li
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin
- P. R. China
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30
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Turchetti DA, Nolasco MM, Szczerbowski D, Carlos LD, Akcelrud LC. Light emission of a polyfluorene derivative containing complexed europium ions. Phys Chem Chem Phys 2015; 17:26238-48. [DOI: 10.1039/c5cp03567h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pure red emission in the solid state was achieved through energy transfer from a polyfluorene derivative (blue emitter) to europium complexed sites inserted into the chain.
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Affiliation(s)
- Denis Augusto Turchetti
- Chemistry Department
- Paulo Scarpa Polymer Laboratory (LaPPS)
- Federal University of Parana
- Curitiba, Parana
- Brazil
| | - Mariela Martins Nolasco
- Physics Department and CICECO Aveiro Institute of Materials
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | | | - Luís Dias Carlos
- Physics Department and CICECO Aveiro Institute of Materials
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - Leni Campos Akcelrud
- Chemistry Department
- Paulo Scarpa Polymer Laboratory (LaPPS)
- Federal University of Parana
- Curitiba, Parana
- Brazil
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31
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Biju S, Freire RO, Eom YK, Scopelliti R, Bünzli JCG, Kim HK. A EuIII Tetrakis(β-diketonate) Dimeric Complex: Photophysical Properties, Structural Elucidation by Sparkle/AM1 Calculations, and Doping into PMMA Films and Nanowires. Inorg Chem 2014; 53:8407-17. [DOI: 10.1021/ic500966z] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Silvanose Biju
- Department of Advanced Materials Chemistry
and WCU Center for Next Generation Photovoltaic Systems, Korea University, Jochiwon-eup, Sejong-si, 339-700 Republic of Korea
| | - Ricardo O. Freire
- Pople Computational
Chemistry Laboratory, Departamento de Quı́mica, Universidade Federal de Sergipe, 49.100-000 — São
Cristóvão, SE Brazil
| | - Yu Kyung Eom
- Department of Advanced Materials Chemistry
and WCU Center for Next Generation Photovoltaic Systems, Korea University, Jochiwon-eup, Sejong-si, 339-700 Republic of Korea
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie
Chimiques, École Polytechnique Fédérale de Lausanne, BCH 1402, CH-1015 Lausanne, Switzerland
| | - Jean-Claude G. Bünzli
- Department of Advanced Materials Chemistry
and WCU Center for Next Generation Photovoltaic Systems, Korea University, Jochiwon-eup, Sejong-si, 339-700 Republic of Korea
- Institut des Sciences et Ingénierie
Chimiques, École Polytechnique Fédérale de Lausanne, BCH 1402, CH-1015 Lausanne, Switzerland
| | - Hwan Kyu Kim
- Department of Advanced Materials Chemistry
and WCU Center for Next Generation Photovoltaic Systems, Korea University, Jochiwon-eup, Sejong-si, 339-700 Republic of Korea
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32
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Xu L, Feng L, Han Y, Jing Y, Xian Z, Liu Z, Huang J, Yan Y. Supramolecular self-assembly enhanced europium(III) luminescence under visible light. SOFT MATTER 2014; 10:4686-4693. [PMID: 24839053 DOI: 10.1039/c4sm00335g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this paper, we report on the luminescence of europium by directly exciting europium ions with visible light in aqueous medium. Upon replacing all the water molecules that coordinate around a central europium ion with a ditopic ligand 1,11-bis(2,6-dicarboxypyridin-4-yloxy)-3,6,9-trioxaundecane (L2EO4), the quenching from water molecules is efficiently eliminated, offering considerable europium emission. By stoichiometrically mixing with a positively charged block polyelectrolyte, the negatively charged L2EO4-Eu coordinating complex can be transformed into a coordination 'polymer', which simultaneously forms electrostatic micelles with further enhanced europium fluorescence emission, owing to the increased fraction of L2EO4-coordinated Eu(III) as revealed by the fluorescence lifetime measurements. This approach avoids the use of the antenna effect that often utilizes UV light as the irradiation source. We further use those micelles for bio-imaging, and for the first time demonstrate the use of directly excited Eu-containing nano-probes for in vivo fluorescence imaging in small animals under visible excitation. Although literature results have shown that the direct excitation of europium ions in water may lead to emissions in the presence of coordinating ligands, those emissions were too weak to be applied due to the remaining water molecules in the coordination sphere. Our work points out that the direct excitation of europium can generate considerable europium emission given that all the water molecules in the coordination sphere are excluded, which does not only greatly reduce tedious lab work in synthesizing antenna molecules, but also facilitates the application of europium in aqueous medium under visible light.
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Affiliation(s)
- Limin Xu
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
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33
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Gao C, Kirillov AM, Dou W, Tang X, Liu L, Yan X, Xie Y, Zang P, Liu W, Tang Y. Self-Assembly Synthesis, Structural Features, and Photophysical Properties of Dilanthanide Complexes Derived from a Novel Amide Type Ligand: Energy Transfer from Tb(III) to Eu(III) in a Heterodinuclear Derivative. Inorg Chem 2014; 53:935-42. [DOI: 10.1021/ic402338q] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Cunji Gao
- Key
Laboratory of Nonferrous Metal Chemistry and Resources Utilization
of Gansu Province, State Key Laboratory of Applied Organic Chemistry,
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Alexander M. Kirillov
- Centro
de Quimica Estrutural, Complexo I, Instituto Superior Tecnico, The University of Lisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Wei Dou
- Key
Laboratory of Nonferrous Metal Chemistry and Resources Utilization
of Gansu Province, State Key Laboratory of Applied Organic Chemistry,
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xiaoliang Tang
- Key
Laboratory of Nonferrous Metal Chemistry and Resources Utilization
of Gansu Province, State Key Laboratory of Applied Organic Chemistry,
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Liangliang Liu
- Key
Laboratory of Nonferrous Metal Chemistry and Resources Utilization
of Gansu Province, State Key Laboratory of Applied Organic Chemistry,
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xuhuan Yan
- Key
Laboratory of Nonferrous Metal Chemistry and Resources Utilization
of Gansu Province, State Key Laboratory of Applied Organic Chemistry,
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yujie Xie
- Key
Laboratory of Nonferrous Metal Chemistry and Resources Utilization
of Gansu Province, State Key Laboratory of Applied Organic Chemistry,
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Peixian Zang
- Key
Laboratory of Nonferrous Metal Chemistry and Resources Utilization
of Gansu Province, State Key Laboratory of Applied Organic Chemistry,
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Weisheng Liu
- Key
Laboratory of Nonferrous Metal Chemistry and Resources Utilization
of Gansu Province, State Key Laboratory of Applied Organic Chemistry,
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yu Tang
- Key
Laboratory of Nonferrous Metal Chemistry and Resources Utilization
of Gansu Province, State Key Laboratory of Applied Organic Chemistry,
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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34
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Gu YJ, Yan B. Europium (III) complex functionalized Si-MCM-41 hybrid materials with visible-light-excited luminescence. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.09.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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35
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Bao J, Tian H, Tang R. Synthesis and characterization a novel europium(III)-β-diketonate complex with carbazole and triphenylamine moieties. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.03.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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36
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Hou Y, Shi J, Chu W, Sun Z. Synthesis, Crystal Structure, and Near-IR Luminescent Properties of Lanthanide Bis(β-diketonate) Complexes. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300013] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Shi J, Hou Y, Chu W, Shi X, Gu H, Wang B, Sun Z. Crystal structure and highly luminescent properties studies of bis-β-diketonate lanthanide complexes. Inorg Chem 2013; 52:5013-22. [PMID: 23601027 DOI: 10.1021/ic302726z] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A new bis(β-diketonate), 1,3-bis(4,4,4-trifluoro-1,3-dioxobutyl)phenyl (BTP), which contains a trifluorinated alkyl group, has been prepared for the synthesis of two series of dinuclear lanthanide complexes with the general formula Ln2(BTP)3L2 [Ln(3+) = Eu(3+), L = DME(1), bpy(2), and phen(3); Ln(3+) = Sm(3+), L = DME(4), bpy(5), and phen(6); DME = ethylene glycol dimethyl ether, bpy = 2,2'-bipyridine, phen = 1,10-phenanthroline]. The crystal structure of the free ligand has been determined and shows a twisted arrangement of the two binding sites around the 1,3-phenylene spacer. X-ray crystallographic analysis reveals that complexes 1, 2, 4, and 5 are triple-stranded dinuclear structures formed by three bis-bidentate ligands with two lanthanide ions. The room-temperature photoluminescence (PL) spectra of complexes 1-6 show that this bis-β-diketonate can effectively sensitize rare earths (Sm(3+) and Eu(3+)) and produce characteristic emissions of the corresponding Eu(3+) and Sm(3+) ions. In addition, two bidentate nitrogen ancillary ligands, 2,2'-bipyridine (bpy) and 1,10-phenanthroline (phen), have been employed to enhance the luminescence quantum yields and lifetimes of both series of Eu(3+) and Sm(3+) complexes.
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Affiliation(s)
- Jing Shi
- Key Laboratory of Chemical Engineering Process and Technology for High-Efficiency Conversion, School of Chemistry and Materials Science, Heilongjiang University, No.74, Xuefu Road, Nangang District, Harbin 150080, People's Republic of China
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Liu SG, Su WY, Pan RK, Zhou XP, Wen XL, Chen YZ, Wang S, Shi XB. The synthesis and luminescence of europium (III) complex based on deprotonated 1-(4-ethyl-4H-thieno[3,2-b]indol-6-yl)-4,4,4-trifluorobutane-1,3-dionate and 1,10-phenanthroline. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 103:417-422. [PMID: 23274226 DOI: 10.1016/j.saa.2012.11.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 11/04/2012] [Accepted: 11/06/2012] [Indexed: 06/01/2023]
Abstract
A new β-diketone ligand, 1-(4-ethyl-4H-thieno[3,2-b]indol-6-yl)-4,4,4-trifluoro-butane-1,3-dione(HL) was synthesized by four steps reaction (Suzuki-Miyaura cross-coupling, Cadogan cyclization, N-ethylation and Claisen condensation reaction) from 1-(4-bromo-3-nitrophenyl)ethanone and thiophen-2-ylboronic acid. Deprotonated ligand (L(-1)) and 1,10-phenanthroline (phen) coordinated to Eu(3+) to obtain a new europium (III) complex, EuL(3)(phen). The complex was characterized by elementary analysis, IR, (1)H NMR, UV-Visible absorption spectroscopy, thermogravimetric analysis (TGA) and photoluminescence (PL) measurements in detail. TGA shows that the decomposition temperature of the complex is up to 320 °C. PL measurement results indicate that the Eu(III) complex exhibit intense red-emission with the characteristic of europium ion. Red LED device was successfully fabricated by employing the complex onto 380 nm-emitting InGaN chip, which shows that the complex can act as red phosphor in combination with 380 nm-emitting chips.
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Affiliation(s)
- Sheng-Gui Liu
- School of Chemistry Science and Technology, Zhanjiang Normal University, Zhanjiang 524048, PR China.
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Xu L, Jing Y, Feng L, Xian Z, Yan Y, Liu Z, Huang J. The advantage of reversible coordination polymers in producing visible light sensitized Eu(iii) emissions over EDTA via excluding water from the coordination sphere. Phys Chem Chem Phys 2013; 15:16641-7. [DOI: 10.1039/c3cp52776j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Liu SG, Pan RK, Zhou XP, Wen XL, Chen YZ, Wang S, Shi XB. Blue-light excitable europium(III) complex based on deprotonated 1-(9-ethyl-6,8-dimethyl-9H-carbazol-2-yl)-4,4,4-trifluorobutane-1,3-dionate and 1,10-phenanthroline. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2012.10.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Divya V, Sankar V, Raghu KG, Reddy MLP. A mitochondria-specific visible-light sensitized europium β-diketonate complex with red emission. Dalton Trans 2013; 42:12317-23. [DOI: 10.1039/c3dt51117k] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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42
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Reddy MLP, Divya V, Pavithran R. Visible-light sensitized luminescent europium(iii)-β-diketonate complexes: bioprobes for cellular imaging. Dalton Trans 2013; 42:15249-62. [DOI: 10.1039/c3dt52238e] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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43
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Liu SG, Su WY, Pan RK, Zhou XP. Red Emission of Eu(III) Complex Based on 1-(7-(tert-butyl)-9-ethyl-9H-carbazol-2-yl)-4,4,4-trifluorobutane-1,3-dione Excited by Blue Light. CHINESE J CHEM PHYS 2012. [DOI: 10.1088/1674-0068/25/06/697-702] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Wang W, Huang Y, Li T, Lu GN, Yang Y, Tang N, Song HB. Dinuclear rare-earth picrate complexes based on a multidentate amide ligand: syntheses, crystal structures, and luminescence properties. J COORD CHEM 2012. [DOI: 10.1080/00958972.2012.731503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Wei Wang
- a Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province , College of Chemistry and Chemical Engineering, Lanzhou University , Lanzhou 730000 , Gansu , P.R. China
| | - Yong Huang
- a Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province , College of Chemistry and Chemical Engineering, Lanzhou University , Lanzhou 730000 , Gansu , P.R. China
| | - Tong Li
- a Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province , College of Chemistry and Chemical Engineering, Lanzhou University , Lanzhou 730000 , Gansu , P.R. China
| | - Guang-Nong Lu
- a Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province , College of Chemistry and Chemical Engineering, Lanzhou University , Lanzhou 730000 , Gansu , P.R. China
| | - Ying Yang
- a Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province , College of Chemistry and Chemical Engineering, Lanzhou University , Lanzhou 730000 , Gansu , P.R. China
| | - Ning Tang
- a Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province , College of Chemistry and Chemical Engineering, Lanzhou University , Lanzhou 730000 , Gansu , P.R. China
| | - Hai-Bin Song
- b The State Key Laboratory of Elemento-Organic Chemistry , Nankai University , Tianjin 300071 , P.R. China
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Li HF, Li GM, Chen P, Sun WB, Yan PF. Highly luminescent lanthanide complexes with novel bis-β-diketone ligand: synthesis, characterization and photoluminescent properties. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 97:197-201. [PMID: 22763323 DOI: 10.1016/j.saa.2012.05.078] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2012] [Revised: 05/18/2012] [Accepted: 05/29/2012] [Indexed: 06/01/2023]
Abstract
A biphenyl-linked bis-β-diketone ligand, 3,3'-bis(3-phenyl-3-oxopropanol)biphenyl (BPB) has been prepared for the syntheses of a series of dinuclear lanthanide complexes. The ligand bears two benzoyl β-diketonate sites linked by a 3,3'-biphenyl spacer. Reaction of the doubly negatively charged bis-bidenate ligand with lanthanide ions forms triple-stranded dinuclear complexes Ln(2)(BPB)(3) (Ln=Nd (1), Sm (2), Eu (3), Yb (4) and Gd (5)). Electrospray mass spectrometry is used to identify the formation of the triple-stranded dinuclear complexes 1-5, which have been further characterized by various spectroscopic techniques. The complexes display strong visible and NIR luminescence upon excitation at ligands bands around 360 nm, depending on the choice of the lanthanides, and the emission quantum yields and luminescence lifetimes of 2-3 have been determined. It shows that the biphenyl-linked ligand BPB is a more efficient sensitizer than the monodiketone ligand DBM (dibenzoylmethane), through the comparisons of Ln(2)(BPB)(3) and Ln(DBM)(3) on their photoluminescent properties.
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Affiliation(s)
- Hong-Feng Li
- Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University), Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, PR China
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Crystal structure and luminescence of complexes of Eu(III) and Tb(III) with furan-2,5-dicarboxylate. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2012.01.053] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Li J, Li H, Yan P, Chen P, Hou G, Li G. Synthesis, Crystal Structure, and Luminescent Properties of 2-(2,2,2-Trifluoroethyl)-1-indone Lanthanide Complexes. Inorg Chem 2012; 51:5050-7. [DOI: 10.1021/ic202473b] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jingya Li
- Key Laboratory of Functional Inorganic
Material Chemistry
(MOE), School of Chemistry and Materials Science, Heilongjiang University, No. 74, Xuefu Road, Nangang District, Harbin
150080, People's Republic of China
| | - Hongfeng Li
- Key Laboratory of Functional Inorganic
Material Chemistry
(MOE), School of Chemistry and Materials Science, Heilongjiang University, No. 74, Xuefu Road, Nangang District, Harbin
150080, People's Republic of China
| | - Pengfei Yan
- Key Laboratory of Functional Inorganic
Material Chemistry
(MOE), School of Chemistry and Materials Science, Heilongjiang University, No. 74, Xuefu Road, Nangang District, Harbin
150080, People's Republic of China
| | - Peng Chen
- Key Laboratory of Functional Inorganic
Material Chemistry
(MOE), School of Chemistry and Materials Science, Heilongjiang University, No. 74, Xuefu Road, Nangang District, Harbin
150080, People's Republic of China
| | - Guangfeng Hou
- Key Laboratory of Functional Inorganic
Material Chemistry
(MOE), School of Chemistry and Materials Science, Heilongjiang University, No. 74, Xuefu Road, Nangang District, Harbin
150080, People's Republic of China
| | - Guangming Li
- Key Laboratory of Functional Inorganic
Material Chemistry
(MOE), School of Chemistry and Materials Science, Heilongjiang University, No. 74, Xuefu Road, Nangang District, Harbin
150080, People's Republic of China
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Yan X, Yan Z, Zhang Y, Liu W, Tang Y, Tan M. Anions make the difference: conversion from zero- to one-dimensional structures and luminescent properties of lanthanide-based complexes. CrystEngComm 2012. [DOI: 10.1039/c2ce25210d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Li HF, Yan PF, Chen P, Wang Y, Xu H, Li GM. Highly luminescent bis-diketone lanthanide complexes with triple-stranded dinuclear structure. Dalton Trans 2011; 41:900-7. [PMID: 22086223 DOI: 10.1039/c1dt11496d] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A new bis-β-diketone, 3,3'-bis(4,4,4-trifluoro-1,3-dioxobutyl)biphenyl (BTB), has been designed and prepared for the synthesis of a series of dinuclear lanthanide complexes [Ln(2)(BTB)(3)(C(2)H(5)OH)(2)(H(2)O)(2)] [Ln = Eu (1), Gd (2)], [Ln(2)(BTB)(3)(DME)(2)] [Ln = Nd (3), Yb (4); DME = ethylene glycol dimethyl ether] and [Eu(2)(BTB)(3)(L)(2)] [L = 2,2-bipydine (5); 1,10-phenanthroline (6); 4,7-diphenyl-1,10-phenanthroline (7)]. Complexes 1-7 have been characterized by various spectroscopic techniques and their photophysical properties are investigated. X-ray crystallographical analysis reveals that complexes 1, 3 and 4 adopt triple-stranded dinuclear structures which are formed by three bis-bidentate ligands with two lanthanide ions. The complexes 1 and 3-7 display strong visible red or NIR luminescence upon irradiation at ligand band around 372 nm, depending on the choice of the lanthanide. The solid-state photoluminescence quantum yields and the lifetimes of Eu(3+) complexes are determined and described.
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Affiliation(s)
- Hong-Feng Li
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, PR China
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50
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A novel europium(III)–imidazol–diketonate–phenanthroline complex as a red phosphor applied in LED. INORG CHEM COMMUN 2011. [DOI: 10.1016/j.inoche.2011.04.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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