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Liu J, Zhao Y, Zhang Z, Li M, Song W, Li W, Miao Z. Circularly polarized blue fluorescence based on chiral heteroleptic six-coordinate bis-pyrazolonate-Zn 2+ complexes. Dalton Trans 2024; 53:6625-6630. [PMID: 38517688 DOI: 10.1039/d4dt00086b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2024]
Abstract
Applying molecular design to chiral organo-Zn2+ complexes, a new pair of chiral heteroleptic bis-pyrazolonate-Zn2+ enantiomers [Zn(PMBP)2(1R,2R-Chxn)] (R,R-Zn2+; HPMBP = 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone and 1R,2R-Chxn = (1R,2R)-cyclohexane-1,2-diamine) and [Zn(PMBP)2(1S,2S-Chxn)] (S,S-Zn2+; 1S,2S-Chxn = (1S,2S)-cyclohexane-1,2-diamine) have been synthesized and characterized in terms of photophysical and thermodynamic properties. In addition to a small Flack parameter (0.05(3)) associated with the solid-state elucidation of S,S-Zn2+, the circular dichroism (CD) and circularly polarized light (CPL) spectra for the chiral Zn2+ enantiomers show perfect mirror symmetry, establishing that the enantiopure 1,2-diamines successfully induce the optical isomerism of R,R-Zn2+ and S,S-Zn2+. As a result of the combined strong chiral induction capability of chiral 1,2-diamines and excellent photophysical properties of the pyrazolone ligand (PMBP)-, the two Zn2+ enantiomers exhibit high-quality pure blue fluorescence (ΦPL = 9-10%) and significant CPL activity (|glum| = 0.0065-0.0068). The heteroleptic strategy adopted in this study offers a new route to develop high-performance chiroptical luminophores.
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Affiliation(s)
- Jiaxiang Liu
- Xi'an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, Technological Institute of Materials & Energy Science (TIMES), Xijing University, Xi'an 710123, P. R. China
| | - Yuzhen Zhao
- Xi'an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, Technological Institute of Materials & Energy Science (TIMES), Xijing University, Xi'an 710123, P. R. China
| | - Zhe Zhang
- Xi'an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, Technological Institute of Materials & Energy Science (TIMES), Xijing University, Xi'an 710123, P. R. China
| | - Manni Li
- Xi'an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, Technological Institute of Materials & Energy Science (TIMES), Xijing University, Xi'an 710123, P. R. China
| | - Wenqi Song
- Xi'an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, Technological Institute of Materials & Energy Science (TIMES), Xijing University, Xi'an 710123, P. R. China
| | - Wentao Li
- College of Big Data and Information Engineering, Institute of Advanced Optoelectronic Materials and Technology, Guizhou University, Guiyang 550025, P. R. China.
| | - Zongcheng Miao
- School of Artificial Intelligence, Optics and Electronics (iOPEN), Northwestern Polytechnical University, Xi'an 710072, P. R. China.
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Kim JH, Lepnev LS, Utochnikova VV. Dual vis-NIR emissive bimetallic naphthoates of Eu-Yb-Gd: a new approach toward Yb luminescence intensity increase through Eu → Yb energy transfer. Phys Chem Chem Phys 2021; 23:7213-7219. [PMID: 33876081 DOI: 10.1039/d1cp00029b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Homo- and heteroligand mono-, bi-, and trimetallic lanthanide naphtoates EuxYbyGd1-x-y(naph)3(Phen)n (n = 0, 1) were obtained and thoroughly investigated. Homoligand naphthoates of the new phase were obtained as anhydrous powders from water. The photophysical properties of the obtained compounds were studied in detail. The first example of Eu-to-Yb energy transfer was found in these systems. Careful selection of the metal ratio allowed a dual vis-NIR emissive complex with a ytterbium quantum yield of 1.5% to be obtained.
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Affiliation(s)
- Jae Hoon Kim
- M. V. Lomonosov Moscow State University, 1/3 Leninskye Gory, Moscow, 119991, Russia.
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Wang Y, Zhang Y, Li D, Zhang A, Wang H, Jia H, Xu B. Tunable white light emission of an anti-ultraviolet rare-earth polysiloxane phosphors based on near UV chips. OPTICS EXPRESS 2021; 29:8997-9011. [PMID: 33820338 DOI: 10.1364/oe.410154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 02/19/2021] [Indexed: 06/12/2023]
Abstract
A novel white-light copolymer matched with 365 nm chips is prepared by bonding the vinyl-functionalized complexes Eu(TTA)2(Phen)(MAA), Tb(p-BBA)3(UA) and Zn(BTZ)(UA) to polysiloxaneprepolymer(synthesized by polycondensation of vinyltrimethoxysilane and diphenylsilanediol) through a technical route of polymerization after coordination. Its structure was characterized by infrared and ultraviolet. Under the excitation of 365 nm, when the ratio of the tricolor complexes is controlled to be 0.5: 3: 1.5, white light copolymer with CIE color coordinates of (0.327, 0.321) was obtained and packaged to get white light LED devices. After aging, the CIE color coordinates of the device change from (0.325, 0.329) to (0.341, 0.348), the color rendering index changes from 91 to 88, and the correlated color temperature changes from 5967 K to 5612 K. The loss of brightness is only 10.4%, which shows good resistance to UV aging. Moreover, the initial decomposition temperature of the copolymer is 235°C. The above results show that the bonding-type anti-ultraviolet copolymer phosphor has potential application in near ultraviolet LEDs.
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Abstract
Lanthanide (LnIII) ions were successfully chelated and sensitized with a tripodal ligand. The absolute LnIII-centered emission efficiencies were ~3% for both the europium(III) (EuIII) and terbium (TbIII) complexes and up to 54% for the cerium(III) (CeIII) complex. The differences in emission quantum yields for the early lanthanides (CeIII) and the mid lanthanides (EuIII and TbIII) were attributed to their d–f and f–f nature, respectively. Despite the low quantum yield of the EuIII complex, the combination of the residual ligand fluorescence and the red EuIII emission resulted in a bluish-white material with the Commission Internationale de l’Eclairage (CIE) coordinates (0.258, 0.242). Thus, metal complexes of the ligand could be used in the generation of single-component white-light-emitting materials.
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Synthesis, crystal structure and photophysical properties of mixed-ligand lanthanide complexes with 1,3-diketonates bearing pyrazole moieties and 1,10-phenanthroline. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119922] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Utochnikova V. The use of luminescent spectroscopy to obtain information about the composition and the structure of lanthanide coordination compounds. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.07.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Wang X, Tang J, Wang G, Wang W, Ren J, Ding W, Zhang X, Wang Y, Shen W, Huang L, Belfiore LA. Ln 3+-Induced Diblock Copolymeric Aggregates for Fully Flexible Tunable White-Light Materials. NANOMATERIALS 2019; 9:nano9030363. [PMID: 30841481 PMCID: PMC6474134 DOI: 10.3390/nano9030363] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 02/20/2019] [Accepted: 02/27/2019] [Indexed: 12/30/2022]
Abstract
In this research contribution, nano-aggregates have been fabricated by introducing lanthanide (Ln3+) ions into solutions of amphiphilic diblock copolymers of polystyrene-b-poly (acrylic acid) (PS-b-PAA). The coordination of acrylic acid segments to lanthanide cations induces diblock copolymer (BCPs) self-assembly in order to design stable white luminescent hybrid nanoparticles with fine uniform particle size. The introduction of Ln3+ ions (Eu3+ and Tb3+) bestows the micelles, precisely white light, upon excitation of 342 nm. Lanthanide coordination cross-linking of poly (acrylic acid) segments, or blocks, endows the micelles higher thermal stability than that of BCPs micelles without cross-linking. As the most important key point of this work, the regular and stable nano-particles with high emission quality can make fully flexible electroluminescent devices with self-formation or uncoordinated into polymer hosts. Instead of inorganic luminescent nanoparticles with hard cores, this method can potentially apply for fully flexible white-light emitting diodes (FFWLEDs).
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Affiliation(s)
- Xinzhi Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Jianguo Tang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Guanghui Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Wei Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Junjie Ren
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Wei Ding
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Xinbo Zhang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Yao Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Wenfei Shen
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Linjun Huang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Laurence A Belfiore
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA.
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Zhu D, Li J, Guo X, Li Q, Wu H, Meng L, Liu Z. Controlled Synthesis of Tb 3+/Eu 3+ Co-Doped Gd₂O₃ Phosphors with Enhanced Red Emission. Molecules 2019; 24:E759. [PMID: 30791537 PMCID: PMC6412426 DOI: 10.3390/molecules24040759] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 02/14/2019] [Accepted: 02/15/2019] [Indexed: 11/16/2022] Open
Abstract
(Gd0.93-xTb0.07Eux)₂O₃ (x = 0⁻0.10) phosphors shows great potential for applications in the lighting and display areas. (Gd0.93-xTb0.07Eux)₂O₃ phosphors with controlled morphology were prepared by a hydrothermal method, followed by calcination at 1100 °C. XRD, FE-SEM, PL/PLE, luminescent decay analysis and thermal stability have been performed to investigate the Eu3+ content and the effects of hydrothermal conditions on the phase variation, microstructure, luminescent properties and energy transfer. Optimum excitation wavelength at ~308 nm nanometer ascribed to the 4f⁸-4f⁷5d¹ transition of Tb3+, the (Gd0.93-xTb0.07Eux)₂O₃ phosphors display both Tb3+and Eu3+ emission with the strongest emission band at ~611 nm. For increasing Eu3+ content, the Eu3+ emission intensity increased as well while the Tb3+ emission intensity decreased owing to Tb3+→Eu3+ energy transfer. The energy transfer efficiencies were calculated and the energy transfer mechanism was discussed in detail. The lifetime for both the Eu3+ and Tb3+ emission decreases with the Eu3+ addition, the former is due to the formation of resonant energy transfer net, and the latter is because of contribution by Tb3+→Eu3+ energy transfer. The phosphor morphology can be controlled by adjusting the hydrothermal condition (reaction pH), and the morphological influence to the luminescent properties (PL/PLE, decay lifetime, etc.) has been studied in detail.
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Affiliation(s)
- Dong Zhu
- School of Materials Science and Engineering, University of Jinan, Jinan, Shandong 250022, China.
| | - Jinkai Li
- School of Materials Science and Engineering, University of Jinan, Jinan, Shandong 250022, China.
| | - Xiangyang Guo
- Shandong Provincial Academy of Building Research, Jinan, Shandong 250031, China.
| | - Qinggang Li
- School of Materials Science and Engineering, University of Jinan, Jinan, Shandong 250022, China.
| | - Hao Wu
- School of Materials Science and Engineering, University of Jinan, Jinan, Shandong 250022, China.
| | - Lei Meng
- Department of Physics and Astronomy, KU Leuven, 3001 Leuven, Belgium.
| | - Zongming Liu
- School of Materials Science and Engineering, University of Jinan, Jinan, Shandong 250022, China.
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Li D, Jia J, Wang B, Jia H, Zhang A, Liu X, Shen Q, Xu B. Synthesis and Luminescence Properties of a Novel Eu
3+
‐Containing Polysiloxane Copolymer. ChemistrySelect 2018. [DOI: 10.1002/slct.201800395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Dongxin Li
- Key Laboratory of Interface Science and Engineering in Advanced MaterialsCollege of Materials Science and EngineeringTaiyuan University of Technology Taiyuan 030024, PR China
| | - Jing Jia
- Key Laboratory of Interface Science and Engineering in Advanced MaterialsCollege of Materials Science and EngineeringTaiyuan University of Technology Taiyuan 030024, PR China
| | - Bin Wang
- Key Laboratory of Interface Science and Engineering in Advanced MaterialsCollege of Materials Science and EngineeringTaiyuan University of Technology Taiyuan 030024, PR China
| | - Husheng Jia
- Key Laboratory of Interface Science and Engineering in Advanced MaterialsCollege of Materials Science and EngineeringTaiyuan University of Technology Taiyuan 030024, PR China
| | - Aiqin Zhang
- Key Laboratory of Interface Science and Engineering in Advanced MaterialsCollege of Materials Science and EngineeringTaiyuan University of Technology Taiyuan 030024, PR China
- College of Textile EngineeringTaiyuan University of Technology, Taiyuan 030600, PR China
| | - Xuguang Liu
- Key Laboratory of Interface Science and Engineering in Advanced MaterialsCollege of Materials Science and EngineeringTaiyuan University of Technology Taiyuan 030024, PR China
| | - Qianqian Shen
- Key Laboratory of Interface Science and Engineering in Advanced MaterialsCollege of Materials Science and EngineeringTaiyuan University of Technology Taiyuan 030024, PR China
| | - Bingshe Xu
- Key Laboratory of Interface Science and Engineering in Advanced MaterialsCollege of Materials Science and EngineeringTaiyuan University of Technology Taiyuan 030024, PR China
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Dzhardimalieva GI, Uflyand IE. Review: recent advances in the chemistry of metal chelate monomers. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1317347] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Gulzhian I. Dzhardimalieva
- Laboratory of Metallopolymers, The Institute of Problems of Chemical Physics RAS, Chernogolovka, Moscow Region, Russian Federation
| | - Igor E. Uflyand
- Department of Chemistry, Southern Federal University, Rostov-on-Don, Russian Federation
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