1
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Kim Y, Kim J, Lee JH, Moon H, Noh GH, Hwang H, Lee J, Park JH, Kim Y, Park MH. Highly emissive 4-carbazole-appended salen-indium complex: the effect of strong donor-acceptor interaction. Dalton Trans 2023; 52:13379-13386. [PMID: 37675649 DOI: 10.1039/d3dt02129g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Herein, we report our findings on 4-carbazole (CBZ)-appended salen-based indium complexes, CBZIn1 and CBZIn2, which feature diimine bridges exhibiting different electron-accepting properties. Notably, CBZIn2 exhibited a significantly higher photoluminescence quantum efficiency (PLQY, ΦPL) in toluene than CBZIn1, with a value over 15 times greater (ΦPL = 57.7% for CBZIn2; ΦPL = 3.7% for CBZIn1). In particular, in the rigid state of THF at 77 K, CBZIn2 exhibited a near-unity PLQY of 98.2%. Even in the PMMA film, CBZIn2 maintained a high level of PLQY (ΦPL = 70.2%). These results can be attributed to the highly efficient radiative decay process based on intramolecular charge-transfer (ICT) transition between the moderately twisted CBZ, characterized by its conformational rigidity and the 1,2-dicyanoethylene-bridged salen, which exhibits a strong electron-accepting ability. Furthermore, these findings are supported by theoretical calculations.
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Affiliation(s)
- Yoseph Kim
- Department of Chemistry and BK21+ Program Research Team, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea.
| | - Jaehoon Kim
- Department of Chemistry and BK21+ Program Research Team, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea.
- Department of Chemistry Education, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea.
| | - Ji Hye Lee
- Department of Chemistry and Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Hyeongkwon Moon
- Department of Chemistry and BK21+ Program Research Team, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea.
| | - Ga Hee Noh
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Hyonseok Hwang
- Department of Chemistry and Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Junseong Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Jun Hui Park
- Department of Chemistry and BK21+ Program Research Team, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea.
| | - Youngjo Kim
- Department of Chemistry and BK21+ Program Research Team, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea.
| | - Myung Hwan Park
- Department of Chemistry Education, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea.
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2
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Rani Kumar N, Agrawal AR. Advances in the Chemistry of 2,4,6-Tri(thiophen-2-yl)-1,3,5-triazine. ChemistryOpen 2023; 12:e202200203. [PMID: 36599693 PMCID: PMC9812756 DOI: 10.1002/open.202200203] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 11/30/2022] [Indexed: 01/06/2023] Open
Abstract
Heterocyclic systems are now considered to be an integral part of material chemistry. Thiophene, selenophene, furan, pyrrole, carbazole, triazine and others are some such examples worth mentioning. 2,4,6-Tri(thiophen-2-yl)-1,3,5-triazine is a C3h -symmetric system with thiophene as the donor unit and s-triazine as the acceptor unit. This review gives an insight into the advances made in the thienyl-triazine chemistry over the past two to three decades. The synthetic pathways for arriving at this system and all its important derivatives are provided. The major focus is on the materials synthesized using the thienyl-triazine system, including star molecules, linear and hyperbranched polymers, porous materials and their diverse applications. This review will play a catalytic role for new dimensions to be explored in thienyl-triazine chemistry.
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Affiliation(s)
- Neha Rani Kumar
- Department of Chemistry Dhemaji CollegeDhemaji787057, AssamIndia
| | - Abhijeet R. Agrawal
- Institute of ChemistryThe Hebrew University of Jerusalem Edmond J. Safra CampusJerusalem91904Israel
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3
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Dolna M, Nowacki M, Danylyuk O, Brotons-Rufes A, Poater A, Michalak M. NHC-BIAN-Cu(I)-Catalyzed Friedländer-Type Annulation of 2-Amino-3-(per)fluoroacetylpyridines with Alkynes on Water. J Org Chem 2022; 87:6115-6136. [PMID: 35394784 PMCID: PMC9087358 DOI: 10.1021/acs.joc.2c00380] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
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The direct catalytic
alkynylation/dehydrative cyclization of 2-amino-3-trifluoroacetyl-pyridines
on water was developed for the efficient synthesis of a broad range
of fluorinated 1,8-naphthyridines from terminal alkynes. A novel N-heterocyclic
carbene (NHC) ligand system that combines a π-extended acenaphthylene
backbone with sterically bulky pentiptycene pendant groups was successfully
utilized in a copper- or silver-mediated cyclization. Computational
analysis of the reaction pathway supports our explanation of the different
experimental conversions and yields for the set of copper and silver
catalysts. The impact of steric hindrance at the metal center and
the flexibility of substituents on the imidazole ring of the NHC on
catalytic performance are also discussed.
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Affiliation(s)
- Magdalena Dolna
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Michał Nowacki
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Oksana Danylyuk
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Artur Brotons-Rufes
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, c/ M. Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain
| | - Albert Poater
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, c/ M. Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain
| | - Michał Michalak
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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4
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Kwak SW, Mubarok H, Lee JH, Hwang H, Lee KM, Lee MH, Park MH. Highly red-emissive salen–indium complexes: impact of 4-amino-substitution on the photophysical properties. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01337h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
4-NR2-appended salen–indium complexes were prepared via a one-pot synthetic pathway. The complexes exhibited narrow-bandwidth red emissions with high photoluminescence quantum yields that are the highest among the reported salen-based luminophores.
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Affiliation(s)
- Sang Woo Kwak
- Department of Chemistry Education, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Hanif Mubarok
- Department of Chemistry, University of Ulsan, Ulsan 44610, Republic of Korea
| | - Ji Hye Lee
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Hyonseok Hwang
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Kang Mun Lee
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Min Hyung Lee
- Department of Chemistry, University of Ulsan, Ulsan 44610, Republic of Korea
| | - Myung Hwan Park
- Department of Chemistry Education, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
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5
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Ran Y, Yang G, Liu Y, Han W, Gao G, Su R, Bin Z, You J. A methyl-shield strategy enables efficient blue thermally activated delayed fluorescence hosts for high-performance fluorescent OLEDs. MATERIALS HORIZONS 2021; 8:2025-2031. [PMID: 34846479 DOI: 10.1039/d1mh00530h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Here, we report a novel methyl-shield strategy to design ideal TADF hosts for the improvement of the performance of TSF-OLEDs. The methyl group on the xanthone acceptor acts like a shield to protect the luminance center from close intermolecular hydrogen bonding with adjacent molecules, thus alleviating exciton quenching, and meanwhile the small size of the methyl group almost does not disturb the π-π stacking between acceptors, thus maintaining fast electron-transport pathways. dMeACRXTO having two methyl shields is exploited as the host to achieve a record-high EQE of 32.3%, which represents the first report of an EQE above 30% in TSF-OLEDs.
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Affiliation(s)
- You Ran
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People's Republic of China.
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6
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Goswami B, Feuerstein TJ, Yadav R, Köppe R, Lebedkin S, Kappes MM, Roesky PW. Enantiopure Calcium Iminophosphonamide Complexes: Synthesis, Photoluminescence, and Catalysis. Chemistry 2021; 27:4401-4411. [PMID: 33355402 PMCID: PMC7986735 DOI: 10.1002/chem.202004833] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/21/2020] [Indexed: 11/09/2022]
Abstract
The synthesis of calcium complexes ligated by three different chiral iminophosphonamide ligands, L-H (L=[Ph2 P{N(R)CH(CH3 )Ph}2 ]), L'-H (L'=[Ph2 P{NDipp}{N(R)CH(CH3 )Ph}]), (Dipp=2,6-i Pr2 C6 H3 ), and L''-H (L''=[Ph2 P{N(R)CH(CH3 )naph}2 ]), (naph=naphthyl) is presented. The resulting structures [L2 Ca], [L'2 Ca], and [L''2 Ca] represent the first examples of enantiopure homoleptic calcium complexes based on this type of ligands. The calcium complexes show blue-green photoluminescence (PL) in the solid state, which is especially bright at low temperatures. Whereas the emission of [L''2 Ca] is assigned to the fluorescence of naphthyl groups, the PL of [L2 Ca] and [L'2 Ca] is contributed by long-lived phosphorescence and thermally activated delayed fluorescence (TADF), with a strong variation of the PL lifetimes over the temperature range of 5-295 K. Furthermore, an excellent catalytic activity was found for these complexes in hydroboration of ketones at room temperature, although no enantioselectivity was achieved.
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Affiliation(s)
- Bhupendra Goswami
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - Thomas J Feuerstein
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - Ravi Yadav
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - Ralf Köppe
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - Sergei Lebedkin
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Manfred M Kappes
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.,Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber Weg 2, 76131, Karlsruhe, Germany
| | - Peter W Roesky
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
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7
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Kwak SW, Hong JH, Lee SH, Kim M, Chung Y, Lee KM, Kim Y, Park MH. Synthesis and Photophysical Properties of a Series of Dimeric Indium Quinolinates. Molecules 2020; 26:molecules26010034. [PMID: 33374726 PMCID: PMC7793487 DOI: 10.3390/molecules26010034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 12/16/2020] [Accepted: 12/19/2020] [Indexed: 11/16/2022] Open
Abstract
A novel class of quinolinol-based dimeric indium complexes (1-6) was synthesized and characterized using 1H and 13C(1H) NMR spectroscopy and elemental analysis. Compounds 1-6 exhibited typical low-energy absorption bands assignable to quinolinol-centered π-π* charge transfer (CT) transition. The emission spectra of 1-6 exhibited slight bathochromic shifts with increasing solvent polarity (p-xylene < tetrahydrofuran (THF) < dichloromethane (DCM)). The emission bands also showed a gradual redshift, with an increase in the electron-donating effect of substituents at the C5 position of the quinoline groups. The absolute emission quantum yields (ΦPL) of compounds 1 (11.2% in THF and 17.2% in film) and 4 (17.8% in THF and 36.2% in film) with methyl substituents at the C5 position of the quinoline moieties were higher than those of the indium complexes with other substituents.
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Affiliation(s)
- Sang Woo Kwak
- Department of Chemistry, Chungbuk National University, Cheongju 28644, Korea; (S.W.K.); (S.H.L.); (M.K.); (Y.C.)
| | - Ju Hyun Hong
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, Korea;
| | - Sang Hoon Lee
- Department of Chemistry, Chungbuk National University, Cheongju 28644, Korea; (S.W.K.); (S.H.L.); (M.K.); (Y.C.)
| | - Min Kim
- Department of Chemistry, Chungbuk National University, Cheongju 28644, Korea; (S.W.K.); (S.H.L.); (M.K.); (Y.C.)
| | - Yongseog Chung
- Department of Chemistry, Chungbuk National University, Cheongju 28644, Korea; (S.W.K.); (S.H.L.); (M.K.); (Y.C.)
| | - Kang Mun Lee
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, Korea;
- Correspondence: (K.M.L.); (Y.K.); (M.H.P.); Tel.: +82-33-250-8499 (K.M.L.); +82-43-261-3395 (Y.K.); +82-43-261-2736 (M.H.P.)
| | - Youngjo Kim
- Department of Chemistry, Chungbuk National University, Cheongju 28644, Korea; (S.W.K.); (S.H.L.); (M.K.); (Y.C.)
- Correspondence: (K.M.L.); (Y.K.); (M.H.P.); Tel.: +82-33-250-8499 (K.M.L.); +82-43-261-3395 (Y.K.); +82-43-261-2736 (M.H.P.)
| | - Myung Hwan Park
- Department of Chemistry Education, Chungbuk National University, Cheongju 28644, Korea
- Correspondence: (K.M.L.); (Y.K.); (M.H.P.); Tel.: +82-33-250-8499 (K.M.L.); +82-43-261-3395 (Y.K.); +82-43-261-2736 (M.H.P.)
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8
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Synthetic Strategies, Reactivity and Applications of 1,5-Naphthyridines. Molecules 2020; 25:molecules25143252. [PMID: 32708796 PMCID: PMC7397193 DOI: 10.3390/molecules25143252] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/11/2020] [Accepted: 07/15/2020] [Indexed: 11/17/2022] Open
Abstract
This review covers the synthesis and reactivity of 1,5-naphthyridine derivatives published in the last 18 years. These heterocycles present a significant importance in the field of medicinal chemistry because many of them exhibit a great variety of biological activities. First, the published strategies related to the synthesis of 1,5-naphthyridines are presented followed by the reactivity of these compounds with electrophilic or nucleophilic reagents, in oxidations, reductions, cross-coupling reactions, modification of side chains or formation of metal complexes. Finally, some properties and applications of these heterocycles studied during this period are examined.
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9
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Woo WH, Lee SH, Kwak SW, Kim M, Lee KM, Park MH, Kim Y. Synthesis and Photophysical Properties of (
Cl
2
Ph
)Salen‐based Indium Complexes. B KOREAN CHEM SOC 2020. [DOI: 10.1002/bkcs.12062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Won Hee Woo
- Department of ChemistryChungbuk National University Cheongju Chungbuk 28644 Korea
| | - Seok Ho Lee
- Department of ChemistryInstitute for Molecular Science and Fusion Technology, Kangwon National University Chuncheon Gangwon 24341 Korea
| | - Sang Woo Kwak
- Department of ChemistryChungbuk National University Cheongju Chungbuk 28644 Korea
| | - Min Kim
- Department of ChemistryChungbuk National University Cheongju Chungbuk 28644 Korea
| | - Kang Mun Lee
- Department of ChemistryInstitute for Molecular Science and Fusion Technology, Kangwon National University Chuncheon Gangwon 24341 Korea
| | - Myung Hwan Park
- Department of Chemistry EducationChungbuk National University Cheongju Chungbuk 28644 Korea
| | - Youngjo Kim
- Department of ChemistryChungbuk National University Cheongju Chungbuk 28644 Korea
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10
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Anjali BA, Suresh CH. Absorption and emission properties of 5-phenyl tris(8-hydroxyquinolinato) M(III) complexes (M = Al, Ga, In) and correlations with molecular electrostatic potential. J Comput Chem 2020; 41:1497-1508. [PMID: 32289191 DOI: 10.1002/jcc.26193] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 03/09/2020] [Indexed: 11/07/2022]
Abstract
Substituent effect for a series of 5-phenyl tris(8-hydroxyquinolinato) M(III) complexes (Mq3) of aluminum, gallium, and indium are investigated using density functional theory (DFT) for the ground state properties and the time-dependent version of DFT (TDDFT) for their absorption and emission properties. A comparison between the ground state energy of mer and fac isomers of all the complexes revealed that the mer configuration is always more stable than fac. The substituent effect is significantly reflected at the fluorescence maximum (λF ) values whereas the effect is moderate at the absorption maximum (λabs ) values. The molecular electrostatic potential (MESP) at the metal center (VM ) and the most electron rich region indicated by MESP minimum (Vmin ), located at the oxygen of phenoxide ring exhibit excellent correlations with the λF and Stokes shift (λF -λabs ) values. The study suggests the use of Stokes shift as an experimental quantity to measure the excited state substituent effect while the Vmin or VM emerge as theoretical quantities to measure the same.
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Affiliation(s)
- Bai A Anjali
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum, India.,Academy of Scientific & Innovative Research (AcSIR), CSIR-NIIST Campus, Trivandrum, India
| | - Cherumuttathu H Suresh
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum, India.,Academy of Scientific & Innovative Research (AcSIR), CSIR-NIIST Campus, Trivandrum, India
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11
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Wang Q, Lucas F, Quinton C, Qu YK, Rault-Berthelot J, Jeannin O, Yang SY, Kong FC, Kumar S, Liao LS, Poriel C, Jiang ZQ. Evolution of pure hydrocarbon hosts: simpler structure, higher performance and universal application in RGB phosphorescent organic light-emitting diodes. Chem Sci 2020; 11:4887-4894. [PMID: 34122944 PMCID: PMC8159222 DOI: 10.1039/d0sc01238f] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In the field of phosphorescent organic light-emitting diodes (PhOLEDs), designing high-efficiency universal host materials for red, green and blue (RGB) phosphors has been quite a challenge. To date, most of the high-efficiency universal hosts reported incorporate heteroatoms, which have a crucial role in the device performance. However, the introduction of different kinds of heterocycles increases the design complexity and cost of the target material and also creates potential instability in the device performance. In this work, we show that pure aromatic hydrocarbon hosts designed with the 9,9′-spirobifluorene scaffold are high-efficiency and versatile hosts for PhOLEDs. With external quantum efficiencies of 27.3%, 26.0% and 27.1% for RGB PhOLEDs respectively, this work not only reports the first examples of high-efficiency pure hydrocarbon materials used as hosts in RGB PhOLEDs but also the highest performance reported to date for a universal host (including heteroatom-based hosts). This work shows that the PHC design strategy is promising for the future development of the OLED industry as a high-performance and low-cost option. In this work, we propose pure hydrocarbon materials as universal hosts for high-efficiency red, green and blue phosphorescent organic light-emitting diodes.![]()
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Affiliation(s)
- Qiang Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University Suzhou Jiangsu 215123 China
| | - Fabien Lucas
- Univ. Rennes, CNRS, ISCR-UMR 6226 F-35000 Rennes France
| | | | - Yang-Kun Qu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University Suzhou Jiangsu 215123 China
| | | | | | - Sheng-Yi Yang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University Suzhou Jiangsu 215123 China
| | - Fan-Cheng Kong
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University Suzhou Jiangsu 215123 China
| | - Sarvendra Kumar
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University Suzhou Jiangsu 215123 China
| | - Liang-Sheng Liao
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University Suzhou Jiangsu 215123 China
| | - Cyril Poriel
- Univ. Rennes, CNRS, ISCR-UMR 6226 F-35000 Rennes France
| | - Zuo-Quan Jiang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University Suzhou Jiangsu 215123 China
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12
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Kwak SW, Kim MB, Shin H, Lee JH, Hwang H, Ryu JY, Lee J, Kim M, Chung Y, Choe JC, Kim Y, Lee KM, Park MH. A Series of Quinolinol-Based Indium Luminophores: A Rational Design Approach for Manipulating Photophysical Properties. Inorg Chem 2019; 58:8056-8063. [PMID: 31120743 DOI: 10.1021/acs.inorgchem.9b00802] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Moon Bae Kim
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | | | - Ji Hye Lee
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Hyonseok Hwang
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Ji Yeon Ryu
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Junseong Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | | | | | - Joong Chul Choe
- Department of Chemistry, Dongguk University-Seoul, 04620, Republic of Korea
| | | | - Kang Mun Lee
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
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13
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Synthesis, characterization and properties of lanthanide complexes with different ancillary ligands. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.03.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Xu Q, Li W, Ding L, Yang W, Xiao H, Ong WJ. Function-driven engineering of 1D carbon nanotubes and 0D carbon dots: mechanism, properties and applications. NANOSCALE 2019; 11:1475-1504. [PMID: 30620019 DOI: 10.1039/c8nr08738e] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Metal-free carbonaceous nanomaterials have witnessed a renaissance of interest due to the surge in the realm of nanotechnology. Among myriads of carbon-based nanostructures with versatile dimensionality, one-dimensional (1D) carbon nanotubes (CNTs) and zero-dimensional (0D) carbon dots (CDs) have grown into a research frontier in the past few decades. With extraordinary mechanical, thermal, electrical and optical properties, CNTs are utilized in transparent displays, quantum wires, field emission transistors, aerospace materials, etc. Although CNTs possess diverse characteristics, their most attractive property is their unique photoluminescence. On the other hand, another growing family of carbonaceous nanomaterials, which is CDs, has drawn much research attention due to its cost-effectiveness, low toxicity, environmental friendliness, fluorescence, luminescence and simplicity to be synthesized and functionalized with surface passivation. Benefiting from these unprecedented properties, CDs have been widely employed in biosensing, bioimaging, nanomedicine, and catalysis. Herein, we have systematically presented the fascinating properties, preparation methods and multitudinous applications of CNTs and CDs (including graphene quantum dots). We will discuss how CNTs and CDs have emerged as auspicious nanomaterials for potential applications, especially in electronics, sensors, bioimaging, wearable devices, batteries, supercapacitors, catalysis and light-emitting diodes (LEDs). Last but not least, this review is concluded with a summary, outlook and invigorating perspectives for future research horizons in this emerging platform of carbonaceous nanomaterials.
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Affiliation(s)
- Quan Xu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, 102249, China.
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15
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Lee JH, Ryu CH, Yu S, Hwang H, Lee KM. Quinolinol-based Al/Triarylborane Dyad Assembly: Alteration of Electronic Transition States Mediated by Fluoride Anion Binding. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11595] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ji Hye Lee
- Department of Chemistry; Institute for Molecular Science and Fusion Technology, Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Chan Hee Ryu
- Department of Chemistry; Institute for Molecular Science and Fusion Technology, Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Seokhyeon Yu
- Department of Chemistry; Institute for Molecular Science and Fusion Technology, Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Hyonseok Hwang
- Department of Chemistry; Institute for Molecular Science and Fusion Technology, Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Kang Mun Lee
- Department of Chemistry; Institute for Molecular Science and Fusion Technology, Kangwon National University; Chuncheon 24341 Republic of Korea
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16
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Four organic crystals displaying distinctively different emission colors based on an ESIPT-active organic molecule. CHINESE CHEM LETT 2018. [DOI: 10.1016/j.cclet.2018.08.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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17
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Bizzarri C, Spuling E, Knoll DM, Volz D, Bräse S. Sustainable metal complexes for organic light-emitting diodes (OLEDs). Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.09.011] [Citation(s) in RCA: 210] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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18
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Bestgen S, Schoo C, Neumeier BL, Feuerstein TJ, Zovko C, Köppe R, Feldmann C, Roesky PW. Intensely Photoluminescent Diamidophosphines of the Alkaline-Earth Metals, Aluminum, and Zinc. Angew Chem Int Ed Engl 2018; 57:14265-14269. [PMID: 30040153 DOI: 10.1002/anie.201806943] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Indexed: 11/09/2022]
Abstract
The positively charged and weakly polarizable s-block metals commonly do not usually have phosphine ligands in molecular complexes. Herein, we report mono- and dinuclear small diamidophosphine complexes of the alkaline-earth metals Mg, Ca, and Sr, which were prepared from simple precursors and a phosphine-functionalized diamine ligand N,N-bis(2-(diphenyl-phosphino)phenyl)ethane-1,2-diamine (PNHNHP). The alkaline-earth metal based complexes [(PNNP)Mg]2 and [(PNNP)M(thf)3 ] (M=Ca, Sr), exhibit unusual coordination spheres and show bright fluorescence, both in the solid state and in solution. For comparison, the even stronger luminescent Al and Zn complexes [(PNNP)Zn]2 and [(PNNP)AlCl] were prepared. Emission lifetimes in the nanosecond range and high photoluminescence quantum yields up to 93 % are observed at room temperature.
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Affiliation(s)
- Sebastian Bestgen
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany.,Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Christoph Schoo
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - B Lilli Neumeier
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - Thomas J Feuerstein
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - Christina Zovko
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - Ralf Köppe
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - Claus Feldmann
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - Peter W Roesky
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
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19
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Bestgen S, Schoo C, Neumeier BL, Feuerstein TJ, Zovko C, Köppe R, Feldmann C, Roesky PW. Photolumineszierende Diamidophosphankomplexe der Erdalkalimetalle, des Aluminiums und des Zinks. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806943] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sebastian Bestgen
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie (KIT); Engesserstraße 15 76131 Karlsruhe Germany
- Department of Chemistry; Chemistry Research Laboratory; University of Oxford; 12 Mansfield Road Oxford OX1 3TA UK
| | - Christoph Schoo
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie (KIT); Engesserstraße 15 76131 Karlsruhe Germany
| | - B. Lilli Neumeier
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie (KIT); Engesserstraße 15 76131 Karlsruhe Germany
| | - Thomas J. Feuerstein
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie (KIT); Engesserstraße 15 76131 Karlsruhe Germany
| | - Christina Zovko
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie (KIT); Engesserstraße 15 76131 Karlsruhe Germany
| | - Ralf Köppe
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie (KIT); Engesserstraße 15 76131 Karlsruhe Germany
| | - Claus Feldmann
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie (KIT); Engesserstraße 15 76131 Karlsruhe Germany
| | - Peter W. Roesky
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie (KIT); Engesserstraße 15 76131 Karlsruhe Germany
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20
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Tseng TW, Mendiratta S, Luo TT, Chen TW, Lee YP. A new route to constructing rhenium(I)-based 8-hydroxyquinolate complexes: Synthesis, structures and luminescent properties. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.02.019] [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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21
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Kwak SW, Kwon H, Lee JH, Hwang H, Kim M, Chung Y, Kim Y, Lee KM, Park MH. Salen-indium/triarylborane triads: synthesis and ratiometric emission-colour changes by fluoride ion binding. Dalton Trans 2018; 47:5310-5317. [PMID: 29582029 DOI: 10.1039/c8dt00153g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Salen-based indium triads, [{(3-tBu)2-(5-Mes2B)2-salen}In-Me] (1) and [{(3-tBu)2-(5-Mes2Bphenyl)2-salen}In-Me] (2), bearing triarylborane (TAB) units were prepared and fully characterised by NMR spectroscopy and elemental analysis. The major absorption bands of 1 and 2 appeared in the region centred at 347 nm and 374 nm, respectively, and the intense emission spectra were observed in the sky blue (λem = 491 nm for 1) and bluish-green (λem = 498 nm for 2) regions, respectively. The solvatochromism effects in various organic solvents and computational calculation results strongly suggested that these absorption and emission features are mainly attributed to intramolecular charge transfer (ICT) transitions between the salen ligand moieties and the TAB units. Furthermore, UV-vis and photoluminescence (PL) titration experiments by the addition of fluoride anions demonstrated ratiometric quenching patterns in both the absorption and emission spectra, indicating that binding of the fluoride anion to the boron centres interrupts these ICT transitions in each compound. Interestingly, both triads exhibited a gradual red-shifted response in each emission spectrum upon the addition of the fluoride anions, resulting in a dramatic colour-change to yellow. The computational calculation results of the S1 states revealed that these emission-colour change properties arise from the elevation of HOMO levels, which are mainly localised on the TAB moieties, resulting from the fluoride anion binding to the borane centres.
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Affiliation(s)
- Sang Woo Kwak
- Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea.
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22
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Xie P, Yuan N, Li S, Ouyang Y, Zhu Y, Liang H. Synthesis and properties of blue luminescent bipolar materials constructed with carbazole and anthracene units with 4-cyanophenyl substitute at the 9-position of the carbazole unit. LUMINESCENCE 2018; 33:604-610. [PMID: 29377545 DOI: 10.1002/bio.3452] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 12/08/2017] [Accepted: 12/12/2017] [Indexed: 11/11/2022]
Abstract
With carbazole and p-cyanobromobenzene as raw materials, 4-(3,6-di (anthracen-9-yl)-9H-carbazol-9-yl)benzonitrile (DACB) and 4-(3,6-bis(anthracene -9-ylethynyl)-9H-carbazol-9-yl)benzonitrile (BACB) were synthesized through the Suzuki coupling reaction and the Sonogashira coupling reaction, respectively. These structures were characterized using 1 H nuclear magnetic resonance (NMR), elemental analysis and mass spectrometry. Their thermal properties, ultraviolet-visible (UV-vis) absorption, fluorescence emission, fluorescence quantum yields and electrochemical properties were also investigated systematically. In addition, a electroluminescence (EL) device was made with BACB as the emitting layer and performance of the EL device was studied. Results showed that: (1) the temperature points with 5% and 10% of DACB weight loss were 443°C and 461°C, respectively, and were 475°C and 506°C with BACB weight loss of 5% and 10%, respectively. When the temperature was 50-300°C, no significantly thermal transition was observed which suggested that they had excellent thermal stability. (2) DACB and BACB had single emission peaks at 415 nm, and 479 nm with fluorescence quantum yields of 0.61 and 0.87, respectively, indicating that both compounds could emit strong blue light. (3) According to electrochemical measurement on BACB and DACB, their gaps were 3.07 eV and 2.76 eV, respectively, which further showed that these two compounds were very stable and acted as efficient blue light materials. (4) The turn-on voltage of the device was 5 V, and the device emitted dark blue light with Commission Internationale de L'Eclairage (CIE) coordinates of (0.157, 0.079).
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Affiliation(s)
- Pengbo Xie
- Petrochemical Engineering Department of Guangzhou Institute of Technology, Guangzhou, China
| | - Ningning Yuan
- Petrochemical Engineering Department of Guangzhou Institute of Technology, Guangzhou, China
| | - Shanji Li
- Petrochemical Engineering Department of Guangzhou Institute of Technology, Guangzhou, China
| | - Ying Ouyang
- Petrochemical Engineering Department of Guangzhou Institute of Technology, Guangzhou, China
| | - Yongju Zhu
- School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, China
| | - Hui Liang
- School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, China
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23
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Kocherga M, Castaneda J, Walter MG, Zhang Y, Saleh NA, Wang L, Jones DS, Merkert J, Donovan-Merkert B, Li Y, Hofmann T, Schmedake TA. Si(bzimpy)2 – a hexacoordinate silicon pincer complex for electron transport and electroluminescence. Chem Commun (Camb) 2018; 54:14073-14076. [DOI: 10.1039/c8cc07681b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrate the feasibility of hexacoordinate silicon complexes with dianionic pincer ligands as electron transport and electroluminescent components of organic electronic devices.
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Affiliation(s)
- Margaret Kocherga
- University of North Carolina – Charlotte, Department of Chemistry
- Charlotte
- USA
| | - Jose Castaneda
- University of North Carolina – Charlotte, Department of Electrical and Computer Engineering
- Charlotte
- USA
| | - Michael G. Walter
- University of North Carolina – Charlotte, Department of Chemistry
- Charlotte
- USA
| | - Yong Zhang
- University of North Carolina – Charlotte, Department of Electrical and Computer Engineering
- Charlotte
- USA
| | - Nemah-Allah Saleh
- University of North Carolina – Charlotte, Department of Chemistry
- Charlotte
- USA
| | - Le Wang
- University of North Carolina – Charlotte, Department of Chemistry
- Charlotte
- USA
| | - Daniel S. Jones
- University of North Carolina – Charlotte, Department of Chemistry
- Charlotte
- USA
| | - Jon Merkert
- University of North Carolina – Charlotte, Department of Chemistry
- Charlotte
- USA
| | | | - Yanzeng Li
- University of North Carolina – Charlotte, Department of Physics and Optical Science
- Charlotte
- USA
| | - Tino Hofmann
- University of North Carolina – Charlotte, Department of Physics and Optical Science
- Charlotte
- USA
| | - Thomas A. Schmedake
- University of North Carolina – Charlotte, Department of Chemistry
- Charlotte
- USA
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24
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25
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Nikitenko SL, Kaplunov MG, Yakushchenko IK, Echmaev SB. Electroluminescence and photovoltaic properties of bis{N-[2-(benzothiazol-2-yl)phenyl]-N-(4-methylphenylsulfonyl)amido}zinc. Russ Chem Bull 2017. [DOI: 10.1007/s11172-017-1842-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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26
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Maar RR, Rabiee Kenaree A, Zhang R, Tao Y, Katzman BD, Staroverov VN, Ding Z, Gilroy JB. Aluminum Complexes of N 2O 23- Formazanate Ligands Supported by Phosphine Oxide Donors. Inorg Chem 2017; 56:12436-12447. [PMID: 28960966 DOI: 10.1021/acs.inorgchem.7b01907] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis and characterization of a new family of phosphine oxide supported aluminum formazanate complexes (7a,b, 8a, 9a) are reported. X-ray diffraction studies showed that the aluminum atoms in the complexes adopt an octahedral geometry in the solid state. The equatorial positions are occupied by an N2O23- formazanate ligand, and the axial positions are occupied by L-type phosphine oxide donors. UV-vis absorption spectroscopy revealed that the complexes were strongly absorbing (ε ≈ 30000 M-1 cm-1) between 500 and 700 nm. The absorption maxima in this region were simulated using time-dependent density functional theory. With the exception of 3-cyano-substituted complex 7b, which showed maximum luminescence intensity in the presence of excess phosphine oxide, the title complexes are nonemissive in solution and the solid state. The electrochemical properties of the complexes were probed using cyclic voltammetry. Each complex underwent sequential one-electron oxidations in potential ranges of -0.12 to 0.29 V and 0.62 to 0.97 V, relative to the ferrocene/ferrocenium redox couple. Electrochemical reduction events were observed at potentials between -1.34 and -1.75 V. In combination with tri-n-propylamine as a coreactant, complex 7b acted as an electrochemiluminescence emitter with a maximum electrochemiluminescence intensity at a wavelength of 735 nm, red-shifted relative to the photoluminescence maximum of the same compound.
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Affiliation(s)
- Ryan R Maar
- Department of Chemistry and The Centre for Advanced Materials and Biomaterials Research (CAMBR), The University of Western Ontario , 1151 Richmond Street, London, Ontario, Canada N6A 5B7
| | - Amir Rabiee Kenaree
- Department of Chemistry and The Centre for Advanced Materials and Biomaterials Research (CAMBR), The University of Western Ontario , 1151 Richmond Street, London, Ontario, Canada N6A 5B7
| | - Ruizhong Zhang
- Department of Chemistry and The Centre for Advanced Materials and Biomaterials Research (CAMBR), The University of Western Ontario , 1151 Richmond Street, London, Ontario, Canada N6A 5B7
| | - Yichen Tao
- Department of Chemistry and The Centre for Advanced Materials and Biomaterials Research (CAMBR), The University of Western Ontario , 1151 Richmond Street, London, Ontario, Canada N6A 5B7
| | - Benjamin D Katzman
- Department of Chemistry and The Centre for Advanced Materials and Biomaterials Research (CAMBR), The University of Western Ontario , 1151 Richmond Street, London, Ontario, Canada N6A 5B7
| | - Viktor N Staroverov
- Department of Chemistry and The Centre for Advanced Materials and Biomaterials Research (CAMBR), The University of Western Ontario , 1151 Richmond Street, London, Ontario, Canada N6A 5B7
| | - Zhifeng Ding
- Department of Chemistry and The Centre for Advanced Materials and Biomaterials Research (CAMBR), The University of Western Ontario , 1151 Richmond Street, London, Ontario, Canada N6A 5B7
| | - Joe B Gilroy
- Department of Chemistry and The Centre for Advanced Materials and Biomaterials Research (CAMBR), The University of Western Ontario , 1151 Richmond Street, London, Ontario, Canada N6A 5B7
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27
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Balkenhohl M, Greiner R, Makarov IS, Heinz B, Karaghiosoff K, Zipse H, Knochel P. Zn-, Mg-, and Li-TMP Bases for the Successive Regioselective Metalations of the 1,5-Naphthyridine Scaffold (TMP=2,2,6,6-Tetramethylpiperidyl). Chemistry 2017; 23:13046-13050. [PMID: 28777497 DOI: 10.1002/chem.201703638] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Indexed: 12/26/2022]
Abstract
A set of successive regioselective metalations and functionalizations of the 1,5-naphthyridine scaffold are described. A combination of Zn-, Mg-, and Li-TMP (TMP=2,2,6,6-tetramethylpiperidyl) bases and the presence or absence of a Lewis acid (BF3 ⋅OEt2 ) allows the introduction of up to three substituents to the 1,5-naphthyridine core. Also, a novel "halogen dance" reaction was discovered upon metalation of an 8-iodo-2,4-trifunctionalized 1,5-naphthyridine allowing a fourth regioselective functionalization. Additionally, reactions leading to key 1,5-naphthyridines for the preparation of OLED materials and a potential antibacterial agent were performed.
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Affiliation(s)
- Moritz Balkenhohl
- Ludwig-Maximilians-Universität München, Department Chemie, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - Robert Greiner
- Ludwig-Maximilians-Universität München, Department Chemie, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - Ilya S Makarov
- Ludwig-Maximilians-Universität München, Department Chemie, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - Benjamin Heinz
- Ludwig-Maximilians-Universität München, Department Chemie, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - Konstantin Karaghiosoff
- Ludwig-Maximilians-Universität München, Department Chemie, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - Hendrik Zipse
- Ludwig-Maximilians-Universität München, Department Chemie, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - Paul Knochel
- Ludwig-Maximilians-Universität München, Department Chemie, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
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28
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Kwak SW, Choi BH, Lee JH, Hwang H, Lee J, Kwon H, Chung Y, Lee KM, Park MH. Synthesis and Dual-Emission Feature of Salen-Al/Triarylborane Dyads. Inorg Chem 2017; 56:6039-6043. [PMID: 28537404 DOI: 10.1021/acs.inorgchem.7b00768] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Novel salen-Al/triarylborane dyad complexes were prepared and characterized with their corresponding mononuclear compounds. The UV-vis and photoluminescence experiments for dyads exhibited photoinduced energy transfer from borane to the salen-Al moiety in an intramolecular manner. Theoretical calculation and fluoride titration results further supported these intramolecular energy-transfer features.
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Affiliation(s)
| | - Byung Hoon Choi
- Department of Chemistry and Institute for Molecular Science and Fusion Technology, Kangwon National University , Chuncheon, Gangwon 24341, Republic of Korea
| | - Ji Hye Lee
- Department of Chemistry and Institute for Molecular Science and Fusion Technology, Kangwon National University , Chuncheon, Gangwon 24341, Republic of Korea
| | - Hyonseok Hwang
- Department of Chemistry and Institute for Molecular Science and Fusion Technology, Kangwon National University , Chuncheon, Gangwon 24341, Republic of Korea
| | - Junseong Lee
- Department of Chemistry, Chonnam National University , Gwangju 61186, Republic of Korea
| | | | | | - Kang Mun Lee
- Department of Chemistry and Institute for Molecular Science and Fusion Technology, Kangwon National University , Chuncheon, Gangwon 24341, Republic of Korea
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29
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Lee SH, Shin N, Kwak SW, Hyun K, Woo WH, Lee JH, Hwang H, Kim M, Lee J, Kim Y, Lee KM, Park MH. Intriguing Indium-salen Complexes as Multicolor Luminophores. Inorg Chem 2017; 56:2621-2626. [DOI: 10.1021/acs.inorgchem.6b02797] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Seon Hee Lee
- Department of Chemistry
Education, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Nara Shin
- Department of Chemistry and Institute for Molecular Science and Fusion
Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Sang Woo Kwak
- Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Kyunglim Hyun
- Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Won Hee Woo
- Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Ji Hye Lee
- Department of Chemistry and Institute for Molecular Science and Fusion
Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Hyonseok Hwang
- Department of Chemistry and Institute for Molecular Science and Fusion
Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Min Kim
- Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Junseong Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Youngjo Kim
- Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Kang Mun Lee
- Department of Chemistry and Institute for Molecular Science and Fusion
Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Myung Hwan Park
- Department of Chemistry
Education, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
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30
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Park WY, Cheong HW, Lee C, Whang KW. Design of highly efficient RGB top-emitting organic light-emitting diodes using finite element method simulations. OPTICS EXPRESS 2016; 24:24018-24031. [PMID: 27828234 DOI: 10.1364/oe.24.024018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this paper, we present finite element method simulations of top-emitting organic light-emitting diodes for designing optimized red, green, and blue full-color device structures. The OLED structures in the simulation are used to evaluate the device parameters, such as the outcoupling efficiency, electroluminescence spectra, and angular emission characteristics on organic layers with varying thickness and different cathodes. The numerical study also extracts these parameters for nano-structured devices. By observing the agreement between the simulated and measured data precisely, our simulations show capability of predicting the fabricated device results.
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31
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Gao HL, Jiang L, Wang WM, Wang SY, Zhang HX, Cui JZ. Single-Molecule-Magnet Behavior and Fluorescence Properties of 8-Hydroxyquinolinate Derivative-Based Rare-Earth Complexes. Inorg Chem 2016; 55:8898-904. [DOI: 10.1021/acs.inorgchem.6b01420] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Hong-Ling Gao
- Department
of Chemistry, Tianjin University, Tianjin 300354, People’s Republic of China
- State Key
Laboratory of Medicinal Chemical BiologyNankai University, Nankai, Tianjin 300071, People’s Republic of China
| | - Li Jiang
- Department
of Chemistry, Tianjin University, Tianjin 300354, People’s Republic of China
| | - Wen-Min Wang
- Department
of Chemistry, Tianjin University, Tianjin 300354, People’s Republic of China
| | - Shi-Yu Wang
- Department
of Chemistry, Tianjin University, Tianjin 300354, People’s Republic of China
| | - Hong-Xia Zhang
- Department
of Chemistry, Tianjin University, Tianjin 300354, People’s Republic of China
| | - Jian-Zhong Cui
- Department
of Chemistry, Tianjin University, Tianjin 300354, People’s Republic of China
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32
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Back SH, Park JH, Cui C, Ahn DJ. Bio-recognitive photonics of a DNA-guided organic semiconductor. Nat Commun 2016; 7:10234. [PMID: 26725969 PMCID: PMC4725759 DOI: 10.1038/ncomms10234] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 11/19/2015] [Indexed: 11/21/2022] Open
Abstract
Incorporation of duplex DNA with higher molecular weights has attracted attention for a new opportunity towards a better organic light-emitting diode (OLED) capability. However, biological recognition by OLED materials is yet to be addressed. In this study, specific oligomeric DNA–DNA recognition is successfully achieved by tri (8-hydroxyquinoline) aluminium (Alq3), an organic semiconductor. Alq3 rods crystallized with guidance from single-strand DNA molecules show, strikingly, a unique distribution of the DNA molecules with a shape of an ‘inverted' hourglass. The crystal's luminescent intensity is enhanced by 1.6-fold upon recognition of the perfect-matched target DNA sequence, but not in the case of a single-base mismatched one. The DNA–DNA recognition forming double-helix structure is identified to occur only in the rod's outer periphery. This study opens up new opportunities of Alq3, one of the most widely used OLED materials, enabling biological recognition. BioLEDs is an emerging group of light-emitting diodes that use duplex-strand DNA to enhance luminescence intensity. Here, Back et al. show that only the specific binding between a pair of single-strand DNA can trigger the enhancement, which potentially makes BioLEDs an easy platform for DNA recognition.
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Affiliation(s)
- Seung Hyuk Back
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea
| | - Jin Hyuk Park
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Korea
| | - Chunzhi Cui
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Korea
| | - Dong June Ahn
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea.,Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Korea.,Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul 02792, Korea
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33
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Chen B, Zhao L, Ding J, Wang L, Jing X, Wang F. An alcohol-soluble and ion-free electron transporting material functionalized with phosphonate groups for solution-processed multilayer PLEDs. Chem Commun (Camb) 2016; 52:12052-12055. [DOI: 10.1039/c6cc06435c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An alcohol-soluble and ion-free small molecule (TPPO) functionalized with phosphonate groups has been developed as the electron transporting material for solution-processed multilayer PLEDs.
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Affiliation(s)
- Bo Chen
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Lei Zhao
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Junqiao Ding
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Lixiang Wang
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Xiabin Jing
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Fosong Wang
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
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34
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Rao JL, Bhanuprakash K. Push-pull effect on the geometrical, optical and charge transfer properties of disubstituted derivatives of mer-tris(4-hydroxy-1,5-naphthyridinato) aluminum (mer-AlND3). OPEN CHEM 2016. [DOI: 10.1515/chem-2016-0001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractTo design innovative and novel optical materials with high mobility, two kinds of disubstituted derivatives for mer-tris(4-hydroxy-1,5-naphthyridinato) aluminum (mer-AlND3) with push (EDG)–pull (EWG) substituents have been designed. The structures of mer-tris(8-EDG-2-EWG-4-hydroxy-1,5-naphthyridinato) aluminum (type I) and mer-tris(8-EWG-2-EDG-4-hydroxy-1,5-naphthyridinato) aluminum (type II) in the ground and first excited states have been optimized at the B3LYP/6-31G(D) and CIS/6-31G(D) level of theory, respectively. It can be seen from frontier molecular orbitals analysis, in all these complexes, the highest occupied molecular orbital (HOMO) is localized on the pyridine-4-ol ring of A-ligand while lowest unoccupied molecular orbital (LUMO) is on the pyridyl ring of B-ligand in ground state irrespective of electron donor/acceptor substitution present on the ligands similar to that of mer-tris(8-hydroxyquinoline) aluminum (mer-Alq3) and parent mer-AlND3.The absorption and emission wavelengths have been evaluated at the TD-PBE0/6-31G(D) level and it can be see that all the type I derivatives show blue shift while most of the type II derivatives show red shift compared to mer-AlND3. All the disubstituted complexes have showed hypsochromic shifts in both the absorption and emission spectra when compared with the calculated absorption and emission spectra respectively of mer-Alq3. It can be seen that the reorganization energies of some of the disubstituted derivatives are comparable with mer-Alq3 and these derivatives might be good candidates for emitting materials in OLED.
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Affiliation(s)
- Joshi Laxmikanth Rao
- 1I & PC Division, CSIR-Indian Institute of Chemical Technology Hyderabad-500 007, Telangana, India
| | - Kotamarthi Bhanuprakash
- 2I & PC Division, CSIR-Indian Institute of Chemical Technology Hyderabad-500 007, Telangana, India
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35
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Chen D, Han L, Chen W, Zhang Z, Zhang S, Yang B, Zhang Z, Zhang J, Wang Y. Bis(2-(benzo[d]thiazol-2-yl)-5-fluorophenolate)beryllium: a high-performance electron transport material for phosphorescent organic light-emitting devices. RSC Adv 2016. [DOI: 10.1039/c5ra24244d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
A beryllium complex with a low-lying LUMO level, high triplet energy and high electron mobility served as an excellent electron transport material for green, yellow and red phosphorescent OLEDs.
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Affiliation(s)
- Dong Chen
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Liang Han
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Weiping Chen
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Zhenyu Zhang
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Shitong Zhang
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Bing Yang
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Zuolun Zhang
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Jingying Zhang
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Yue Wang
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
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36
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Fleetham T, Li G, Li J. Efficient Red-Emitting Platinum Complex with Long Operational Stability. ACS APPLIED MATERIALS & INTERFACES 2015; 7:16240-16246. [PMID: 26156426 DOI: 10.1021/acsami.5b01596] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A tetradentate cyclometalated Pt(II) complex, PtN3N-ptb, was developed as an emissive dopant for stable and efficient red phosphorescent OLEDs. Devices employing PtN3N-ptb in electrochemically stable device architectures achieved long operational lifetimes with estimated LT97, of over 600 h at luminances of 1000 cd/m(2). Such long operational lifetimes were achieved utilizing only literature reported host, transporting and blocking materials with known molecular structures. Additionally, a thorough study of the effects of various host and transport materials on the efficiency, turn on voltage, and stability of the devices was carried out. Ultimately, maximum forward viewing EQEs as high as 21.5% were achieved, demonstrating that Pt(II) complexes can act as stable and efficient dopants with operational lifetimes comparable or superior to those of the best literature-reported Ir(III) complexes.
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Affiliation(s)
- Tyler Fleetham
- Materials Science and Engineering, Arizona State University, Tempe, Arizona 85287, United States
| | - Guijie Li
- Materials Science and Engineering, Arizona State University, Tempe, Arizona 85287, United States
| | - Jian Li
- Materials Science and Engineering, Arizona State University, Tempe, Arizona 85287, United States
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37
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Yamaguchi Y, Ochi T, Matsubara Y, Yoshida ZI. Highly Emissive Whole Rainbow Fluorophores Consisting of 1,4-Bis(2-phenylethynyl)benzene Core Skeleton: Design, Synthesis, and Light-Emitting Characteristics. J Phys Chem A 2015; 119:8630-42. [DOI: 10.1021/acs.jpca.5b05077] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Yoshihiro Yamaguchi
- Department of Chemistry,
Faculty of Science and Engineering, Kinki University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Takanori Ochi
- Department of Chemistry,
Faculty of Science and Engineering, Kinki University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Yoshio Matsubara
- Department of Chemistry,
Faculty of Science and Engineering, Kinki University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Zen-ichi Yoshida
- Department of Chemistry,
Faculty of Science and Engineering, Kinki University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
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38
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Kurapati S, Jo Y, Hong JH, Kim TH, Cho DG. Anion-binding properties of ureidoquinoline and its turn-on fluorescence in the presence of fluoride anions. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.05.038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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39
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Duan F, Liu L, Qiao C, Yang H. Self-assembly and magnetic behavior of 2-aldehyde-8-hydroxyquinolinate-based lanthanide complex. INORG CHEM COMMUN 2015. [DOI: 10.1016/j.inoche.2015.03.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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40
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Feng X, Hu JY, Wei XF, Redshaw C, Yamato T. Influence of substituent position on thermal properties, photoluminescence and morphology of pyrene–fluorene derivatives. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.01.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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41
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Cheng X, Li F, Han S, Zhang Y, Jiao C, Wei J, Ye K, Wang Y, Zhang H. Emission behaviors of unsymmetrical 1,3-diaryl-β-diketones: a model perfectly disclosing the effect of molecular conformation on luminescence of organic solids. Sci Rep 2015; 5:9140. [PMID: 25771808 PMCID: PMC4360484 DOI: 10.1038/srep09140] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 02/18/2015] [Indexed: 12/26/2022] Open
Abstract
A series of unsymmetrical 1,3-diaryl-β-diketones 1–6 displaying molecular conformation-dependent fluorescence quantum yields have been synthesized. Crystals with planar molecular conformation such as 1, 2, 3 and 4 are highly fluorescent (φf: 39–53%), and the one holding slightly twisted conformation (5) is moderately luminescent (φf = 17%), while crystal 6 possessing heavily bent structure is completely nonluminous (φf ~ 0). The distinct fluorescence efficiencies are ascribed to their different molecular conformations, since all the crystals hold the same crystal system, space group and crystal packing structures. Additionally, the fluorescent crystals 1–5 display low threshold amplified spontaneous emission (ASE) with small full widths at half-maximum (FWHM: 3–7 nm), indicating their potential as candidates for organic crystal lasing devices.
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Affiliation(s)
- Xiao Cheng
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Avenue, Changchun 130012, P. R. China
| | - Feng Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Avenue, Changchun 130012, P. R. China
| | - Shenghua Han
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Avenue, Changchun 130012, P. R. China
| | - Yufei Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Avenue, Changchun 130012, P. R. China
| | - Chuanjun Jiao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Avenue, Changchun 130012, P. R. China
| | - Jinbei Wei
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Avenue, Changchun 130012, P. R. China
| | - Kaiqi Ye
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Avenue, Changchun 130012, P. R. China
| | - Yue Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Avenue, Changchun 130012, P. R. China
| | - Hongyu Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Avenue, Changchun 130012, P. R. China
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42
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Han TH, Song W, Lee TW. Elucidating the crucial role of hole injection layer in degradation of organic light-emitting diodes. ACS APPLIED MATERIALS & INTERFACES 2015; 7:3117-3125. [PMID: 25562405 DOI: 10.1021/am5072628] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Although the luminous efficiency has been significantly improved in multilayered organic light-emitting diodes (OLEDs), understanding the major factors that influence degradation of OLEDs remains a major challenge due to their complex device structure. In this regard, we elucidate the crucial role of hole injection layer (HIL) in degradation of OLEDs by using systematically controlled hole injection interfaces. To analyze charge injection dependent degradation mechanism of OLEDs, we fabricate multilayered small-molecule OLEDs with molecularly controlled HILs. Although a reduced hole injection energy barrier greatly improves both a luminous efficiency and an operational lifetime (>10 times) of the OLEDs at the same time, large hole injection energy barrier increasingly aggravates its charge injection and transport during device operation. By using various kinds of nondestructive analyses at gradual stages of degradation, we demonstrate that accumulated charges at interfaces due to inefficient charge injection accelerates rate of device degradation.
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Affiliation(s)
- Tae-Hee Han
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH) , Pohang, Gyungbuk 790-784, Republic of Korea
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43
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Zhang M, Li H, Chen P, Sun W, Zhang L, Yan P. Self-assembly of 2-aldehyde-8-hydroxyquinolinate-based lanthanide complexes and NIR luminescence. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.10.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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44
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Chen P, Zhang M, Sun W, Li H, Zhao L, Yan P. Anion-dependent assembly of Dy complexes: structures and magnetic behaviors. CrystEngComm 2015. [DOI: 10.1039/c5ce00925a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The in situ reaction of 2-aldehyde-8-hydroxyquinoline, histamine and LnX3·6H2O (X− = OAc−, NO3− and ClO4−) affords three distinct species of eight lanthanide complexes.
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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
- State Key Laboratory of Rare Earth Resource Utilization
| | - Meiqi Zhang
- 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
| | - Hongfeng Li
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080, PR China
| | - Lang Zhao
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, 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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45
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Czympiel L, Pfrommer J, Tyrra W, Schäfer M, Mathur S. Ligand-Modulated Chemical and Structural Implications in Four-, Five-, and Six-fold Coordinated Aluminum Heteroaryl Alkenolates. Inorg Chem 2014; 54:25-37. [DOI: 10.1021/ic502549m] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lisa Czympiel
- Department of Chemistry, Institute of Inorganic Chemistry and ‡Department of
Chemistry, Institute of Organic Chemistry, University of Cologne, 50939 Cologne, Germany
| | - Johannes Pfrommer
- Department of Chemistry, Institute of Inorganic Chemistry and ‡Department of
Chemistry, Institute of Organic Chemistry, University of Cologne, 50939 Cologne, Germany
| | - Wieland Tyrra
- Department of Chemistry, Institute of Inorganic Chemistry and ‡Department of
Chemistry, Institute of Organic Chemistry, University of Cologne, 50939 Cologne, Germany
| | - Mathias Schäfer
- Department of Chemistry, Institute of Inorganic Chemistry and ‡Department of
Chemistry, Institute of Organic Chemistry, University of Cologne, 50939 Cologne, Germany
| | - Sanjay Mathur
- Department of Chemistry, Institute of Inorganic Chemistry and ‡Department of
Chemistry, Institute of Organic Chemistry, University of Cologne, 50939 Cologne, Germany
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46
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Liu B, Wang L, Xu M, Tao H, Zou J, Gao D, Lan L, Ning H, Peng J, Cao Y. Efficient hybrid white organic light-emitting diodes with extremely long lifetime: the effect of n-type interlayer. Sci Rep 2014; 4:7198. [PMID: 25425090 PMCID: PMC4244633 DOI: 10.1038/srep07198] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Accepted: 11/05/2014] [Indexed: 11/23/2022] Open
Abstract
The effect of n-type interlayer in hybrid white organic light-emitting diodes (WOLEDs) has been systematically investigated by using various n-type materials. A new finding, that the triplet energy rather than electron mobility or hole-blocking ability of interlayer plays a more positive role in the performance of hybrid WOLEDs, is demonstrated. Based on the new finding, a more efficient n-type interlayer bis[2-(2-hydroxyphenyl)-pyridine] beryllium has been employed to realize a high-performance hybrid WOLED. The resulting device (without n-doping technology) exhibits low voltages (i.e., 2.8 V for 1 cd/m2, 3.9 V for 100 cd/m2) and low efficiency roll-off (i.e., 11.5 cd/A at 100 cd/m2 and 11.2 cd/A at 1000 cd/m2). At the display-relevant luminance of 100 cd/m2, a total power efficiency of 16.0 lm/W, a color rendering index of 73 and an extremely long lifetime of 12596265 h are obtained. Such superior results not only comprehensively indicate that the n-type materials are effective interlayers to develop high-performance hybrid WOLEDs but also demonstrate a significant step towards real commercialization in WOLEDs.
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Affiliation(s)
- Baiquan Liu
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Lei Wang
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Miao Xu
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Hong Tao
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Jianhua Zou
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Dongyu Gao
- New Vision Opto-Electronic Technology Co., Ltd, Guangzhou 510530, China
| | - Linfeng Lan
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Honglong Ning
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Junbiao Peng
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Yong Cao
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
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47
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Yan Q, Li L, Li W, Wang L, Sun WH. Synthesis, characterization and fluorescent properties of 5-(aryliminomethyl)quinaldine-8-ol derivatives and their trinuclear zinc complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 128:790-797. [PMID: 24704486 DOI: 10.1016/j.saa.2014.03.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Revised: 03/07/2014] [Accepted: 03/08/2014] [Indexed: 06/03/2023]
Abstract
A series of 5-[1-(arylimino)methyl]quinaldine-8-ol derivatives L1-L5 and their trinuclear zinc(II) complexes (C1-C5) were synthesized. The compounds L1-L5 were fully characterized by the FT-IR spectra, NMR measurement and elemental analysis, meanwhile the zinc complexes C1-C5 were characterized by the FT-IR spectra and elemental analysis as well as the single crystal X-ray diffraction of a representative complex C3, which revealed a trinuclear zinc complex bearing six organic ligands. The fluorescent properties of both organic compounds and the zinc complexes have been carefully investigated by the UV-Vis absorption in various solvents, indicating the significant influences of the solvents and also double exponential decays.
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Affiliation(s)
- Qing Yan
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Longlong Li
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Wen Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Lin Wang
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Wen-Hua Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
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48
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Tsuboi T, Huang W. Recent Advances in Multicolor Emission and Color Tuning of Heteroleptic Iridium Complexes. Isr J Chem 2014. [DOI: 10.1002/ijch.201400050] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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49
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50
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Xu H, Chen R, Sun Q, Lai W, Su Q, Huang W, Liu X. Recent progress in metal–organic complexes for optoelectronic applications. Chem Soc Rev 2014; 43:3259-302. [DOI: 10.1039/c3cs60449g] [Citation(s) in RCA: 864] [Impact Index Per Article: 86.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This critical review reports recent advances in the development of metal–organic complexes for optoelectronic applications.
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Affiliation(s)
- Hui Xu
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education and School of Chemistry and Materials
- Heilongjiang University
- Harbin 150080, China
- Department of Chemistry
| | - Runfeng Chen
- Department of Chemistry
- Faculty of Science
- National University of Singapore
- Singapore 117543, Singapore
- Key Laboratory for Organic Electronics & Information Displays
| | - Qiang Sun
- Department of Chemistry
- Faculty of Science
- National University of Singapore
- Singapore 117543, Singapore
| | - Wenyong Lai
- Key Laboratory for Organic Electronics & Information Displays
- Institute of Advanced Materials
- Nanjing University of Posts & Telecommunications
- Nanjing 210023, China
| | - Qianqian Su
- Department of Chemistry
- Faculty of Science
- National University of Singapore
- Singapore 117543, Singapore
| | - Wei Huang
- Key Laboratory for Organic Electronics & Information Displays
- Institute of Advanced Materials
- Nanjing University of Posts & Telecommunications
- Nanjing 210023, China
- Singapore-Jiangsu Joint Research Center for Organic/Bio-electronics and Information Displays and Institute of Advanced Materials
| | - Xiaogang Liu
- Department of Chemistry
- Faculty of Science
- National University of Singapore
- Singapore 117543, Singapore
- Institute of Materials Research and Engineering
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