1
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Poriel C, Rault-Berthelot J. Dihydroindenofluorenes as building units in organic semiconductors for organic electronics. Chem Soc Rev 2023; 52:6754-6805. [PMID: 37702538 DOI: 10.1039/d1cs00993a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
This review aims to discuss organic semiconductors constructed on dihydroindenofluorene positional isomers, which are key molecular scaffolds in organic electronics. Bridged oligophenylenes are key organic semiconductors that have allowed the development of organic electronic technologies. Dihydroindenofluorenes (DHIFs) belong to the family of bridged oligophenylenes constructed on a terphenyl backbone. They have proven to be very promising building blocks for the construction of highly efficient organic semiconductors for all OE devices, namely organic light emitting diodes (OLEDs), phosphorescent OLEDs, organic field-effect transistors (OFETs), solar cells, etc.
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Affiliation(s)
- Cyril Poriel
- UMR CNRS 6226-Université Rennes 1-ISCR-Campus de Beaulieu, 35042 Rennes, France.
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2
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Mahmoudi M, Urbonas E, Volyniuk D, Gudeika D, Dabrovolskas K, Simokaitiene J, Dabuliene A, Keruckiene R, Leitonas K, Guzauskas M, Skhirtladze L, Stanitska M, Grazulevicius JV. Indolocarbazoles with Sterically Unrestricted Electron-Accepting Anchors Showcasing Aggregation-Induced Thermally Activated Delayed Mechanoluminescence for Host-Free Organic Light-Emitting Diodes. Molecules 2023; 28:5999. [PMID: 37630259 PMCID: PMC10457976 DOI: 10.3390/molecules28165999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/03/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023] Open
Abstract
We investigated the effects of sterically nonrestricted electron-accepting substituents of three isomeric indolocarbazole derivatives on their aggregation-induced emission enhancement, mechanochromic luminescence and thermally activated delayed fluorescence. The compounds are potentially efficient emitters for host-free organic light-emitting diodes. The films of indolocarbazole derivatives exhibit emissions with wavelengths of fluorescence intensity maxima from 483 to 500 nm and photoluminescence quantum yields from 31 to 58%. The ionization potentials of the solid samples, measured by photoelectron emission spectrometry, are in the narrow range of 5.78-5.99 eV. The electron affinities of the solid samples are in the range of 2.99-3.19 eV. The layers of the derivatives show diverse charge-transporting properties with maximum hole mobility reaching 10-4 cm2/Vs at high electric fields. An organic light-emitting diode with a light-emitting layer of neat compound shows a turn-on voltage of 4.1 V, a maximum brightness of 24,800 cd/m2, a maximum current efficiency of 12.5 cd/A and an external quantum efficiency of ca. 4.8%. When the compounds are used as hosts, green electroluminescent devices with an external quantum efficiency of ca. 11% are obtained. The linking topology of the isomeric derivatives of indolo[2,3-a]carbazole and indolo[3,2-b]carbazole and the electron-accepting anchors influences their properties differently, such as aggregation-induced emission enhancement, mechanochromic luminescence, thermally activated delayed fluorescence, charge-transporting, and electroluminescent properties. The derivative indolo[3,2-b]carbazole displays good light-emitting properties, while the derivatives of indolo[2,3-a]carbazole show good hosting properties, which make them useful for application in electroluminescent devices.
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Affiliation(s)
| | | | - Dmytro Volyniuk
- Department of Polymer Chemistry and Technology, Kaunas University of Technology, K. Barsausko g. 59, 51423 Kaunas, Lithuania (K.D.); (J.S.)
| | | | | | | | | | | | | | | | | | | | - Juozas Vidas Grazulevicius
- Department of Polymer Chemistry and Technology, Kaunas University of Technology, K. Barsausko g. 59, 51423 Kaunas, Lithuania (K.D.); (J.S.)
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3
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Kang J, Lee HL, Chung WJ, Lee JY. Asymmetric Decoration of a meta-Linked Bitriazine-Based Host for Highly Efficient and Stable Blue Phosphorescent Organic Light-Emitting Diodes. ACS APPLIED MATERIALS & INTERFACES 2023; 15:22332-22340. [PMID: 37115826 DOI: 10.1021/acsami.3c01477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
High triplet energy hosts for blue phosphorescent organic light-emitting diodes were developed by decorating a meta-linked bitriazine core with carbazole and tetraphenylsilyl functional groups. A symmetric host with two carbazole units as the two triazine units of the core and an asymmetric host with one carbazole unit and one tetraphenylsilyl unit as the two triazine units were prepared. The triplet energy of these two hosts was 2.97 eV, suitable for triplet exciton harvesting of blue phosphors. Comparing the two host designs, the asymmetric decoration of the two triazine units with carbazole and tetraphenylsilyl units was superior to the symmetric decoration of the two triazine units with two carbazoles in terms of high external quantum efficiency (EQE) and long-term device stability. A high EQE of 19.7% and a long device lifetime of 2093.6 h at 100 cd m-2 were achieved using the asymmetrical host.
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Affiliation(s)
- Jihoon Kang
- School of Chemical Engineering, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, Republic of Korea
| | - Ha Lim Lee
- School of Chemical Engineering, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, Republic of Korea
| | - Won Jae Chung
- School of Chemical Engineering, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, Republic of Korea
| | - Jun Yeob Lee
- School of Chemical Engineering, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, Republic of Korea
- SKKU Advanced Institute of Nano Technology, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, Republic of Korea
- SKKU Institute of Energy Science and Technology, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, Republic of Korea
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4
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Yang Y, Wei J, Xiang‐YangLiu, Li R, Zhang Z. Novel
Ortho
‐Linkage Donor‐Acceptor Type Host Materials for Efficiently Red Phosphorescence Organic Light‐Emitting Diodes. ChemistrySelect 2022. [DOI: 10.1002/slct.202201647] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yong‐Jian Yang
- School of Environment and Chemical Engineering Jiangsu Ocean University, 59 Cangwu Road, Haizhou District Lianyungang 222005 P. R. China
| | - Jia‐Jia Wei
- School of Environment and Chemical Engineering Jiangsu Ocean University, 59 Cangwu Road, Haizhou District Lianyungang 222005 P. R. China
| | - Xiang‐YangLiu
- Wispo Advanced Materials (Suzhou) Co., Ltd. Suzhou Industrial Park (SIP) 200 Xingpu Road, Shengpu Street Suzhou 215126 P.R. China
| | - Runlai Li
- College of Polymer Science & Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 P. R. China
| | - Zhen‐Ming Zhang
- School of Environment and Chemical Engineering Jiangsu Ocean University, 59 Cangwu Road, Haizhou District Lianyungang 222005 P. R. China
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5
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Konidena RK, Lim J, Lee JY. C1,C8-modified carbazole-based bipolar host materials for blue phosphorescent electroluminescent devices. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2021.11.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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6
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Kunz SV, Cole CM, Gauci SC, Zaar F, Shaw PE, Ranasinghe CSK, Baumann T, Sonar P, Yambem SD, Blasco E, Barner-Kowollik C, Blinco JP. A simplified approach to thermally activated delayed fluorescence (TADF) bipolar host polymers. Polym Chem 2022. [DOI: 10.1039/d2py00511e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Herein, we compare a series of solution-processible TADF polymers with different host pendant groups to achieve balanced charge transport properties through the combination of unipolar co-hosts.
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Affiliation(s)
- Susanna V. Kunz
- Centre for Materials Science, School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, 4000 QLD, Australia
| | - Cameron M. Cole
- Centre for Materials Science, School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, 4000 QLD, Australia
| | - Steven C. Gauci
- Centre for Materials Science, School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, 4000 QLD, Australia
| | - Felicia Zaar
- Nanotechnology and Functional Materials, Department of Engineering Sciences, The Ångström Laboratory, Uppsala University, 751 21 Uppsala, Sweden
| | - Paul E. Shaw
- Centre for Organic Photonics & Electronics, The School of Chemistry and Molecular Biosciences, The University of Queensland, Queensland, 4072, Australia
| | - Chandana Sampath Kumara Ranasinghe
- Centre for Organic Photonics & Electronics, The School of Chemistry and Molecular Biosciences, The University of Queensland, Queensland, 4072, Australia
| | - Thomas Baumann
- Cynora GmbH, Werner-von-Siemens-Straße 2-6, 76646 Bruchsal, Germany
| | - Prashant Sonar
- Centre for Materials Science, School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, 4000 QLD, Australia
| | - Soniya D. Yambem
- Centre for Materials Science, School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, 4000 QLD, Australia
| | - Eva Blasco
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann–von–Helmholtz–Platz 1, 76344 Eggenstein–Leopoldshafen, Germany
- Institute of Organic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, Centre for Advanced Materials, Heidelberg University, Im Neuenheimer Feld 225, 69120 Heidelberg, Germany
| | - Christopher Barner-Kowollik
- Centre for Materials Science, School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, 4000 QLD, Australia
| | - James P. Blinco
- Centre for Materials Science, School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, 4000 QLD, Australia
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7
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Wu H, Wang G, Zhang D, Jin X, Luo X, Guo S, Zhou H, Miao Y, Huang J, Su J. Novel carbazole- and dioxino[2,3- b]pyrazine-based bipolar hosts for red PhOLEDs with a high brightness. NEW J CHEM 2022. [DOI: 10.1039/d2nj01951e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The target compounds offer new synthetic ideas for red bipolar host materials.
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Affiliation(s)
- Haifa Wu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Guoliang Wang
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
| | - Daqing Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Xin Jin
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Xin Luo
- Shanghai Taoe Chemical Technology Co., Ltd, Shanghai, P. R. China
| | - Shiyan Guo
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Haitao Zhou
- Shanghai Taoe Chemical Technology Co., Ltd, Shanghai, P. R. China
| | - Yanqin Miao
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
| | - Jinhai Huang
- Shanghai Taoe Chemical Technology Co., Ltd, Shanghai, P. R. China
| | - Jianhua Su
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, P. R. China
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8
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Song K, Li J, Liu D, Lan Y, Wu C, Liu B, Shi C. Bicarbazole-cyanopyridine based bipolar host materials for green and blue phosphorescent OLEDs: influence of the linking style between P- and N-type units. NEW J CHEM 2022. [DOI: 10.1039/d2nj01737g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bicarbazole and cyanopyridine were used to construct bipolar host materials. Ortho-linkage generated more balanced charge transportations and sufficiently high triplet energy (3.05 eV), and finally led to high EQEs of 15.9% and 22.6% in sky-blue and green phosphorescent OLEDs.
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Affiliation(s)
- Kai Song
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
| | - Jiuyan Li
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
| | - Di Liu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
| | - Ying Lan
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
| | - Chen Wu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
| | - Botao Liu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
| | - Chunlong Shi
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
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9
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Lee DW, Hwang J, Kim HJ, Lee H, Ha JM, Woo HY, Park S, Cho MJ, Choi DH. Novel V-Shaped Bipolar Host Materials for Solution-Processed Thermally Activated Delayed Fluorescence OLEDs. ACS APPLIED MATERIALS & INTERFACES 2021; 13:49076-49084. [PMID: 34628848 DOI: 10.1021/acsami.1c14098] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Three V-shaped host molecules with a cyclohexane linker were successfully synthesized for thermally activated delayed fluorescence organic light-emitting diodes (TADF-OLEDs). The unipolar host molecules, BBCzC and BTDC, contained two 9-phenyl-9H-3,9'-bicarbazole (PBCz) moieties and two 2,12-di-tert-butyl-7-phenyl-5,9-dioxa-13b-boranaphtho[3,2,1-de]anthracene (PDBNA) moieties, respectively. BCzTC, a bipolar host molecule, consisted of a donor unit, PBCz, and an acceptor unit, PDBNA, connected by a cyclohexane linker. Three host molecules showed good solubility in various organic solvents, making them suitable for solution processing. Among the solution-processed green TADF-OLEDs using three host molecules and a green TADF emitter, the one with BCzTC showed the highest external quantum efficiency of up to 30% with a high power efficiency of 71 lm W-1 and a current efficiency of 102 cd A-1. Compared with BBCzC and BTDC, BCzTC exhibited a relatively high photoluminescence quantum yield (PLQY), an excellent balance in hole and electron transport properties in the emitting layer, and more efficient energy transfer to the emitter, giving such an excellent device performance.
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Affiliation(s)
- Dong Won Lee
- Department of Chemistry, Research Institute for Natural Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Jinhyo Hwang
- Department of Chemistry, Research Institute for Natural Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Hyung Jong Kim
- Department of Chemistry, Research Institute for Natural Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Hyoseong Lee
- Department of Chemistry, Research Institute for Natural Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Jung Min Ha
- Department of Chemistry, Research Institute for Natural Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Han Young Woo
- Department of Chemistry, Research Institute for Natural Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Sungnam Park
- Department of Chemistry, Research Institute for Natural Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Min Ju Cho
- Department of Chemistry, Research Institute for Natural Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Dong Hoon Choi
- Department of Chemistry, Research Institute for Natural Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
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10
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Jiang H, Jin J, Wang Z, Wang W, Chen R, Tao Y, Xue Q, Zheng C, Xie G, Huang W. Constructing Donor-Resonance-Donor Molecules for Acceptor-Free Bipolar Organic Semiconductors. RESEARCH (WASHINGTON, D.C.) 2021; 2021:9525802. [PMID: 38617381 PMCID: PMC11014465 DOI: 10.34133/2021/9525802] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 12/29/2020] [Indexed: 04/16/2024]
Abstract
Organic semiconductors with bipolar transporting character are highly attractive as they offer the possibility to achieve high optoelectronic performance in simple device structures. However, the continual efforts in preparing bipolar materials are focusing on donor-acceptor (D-A) architectures by introducing both electron-donating and electron-withdrawing units into one molecule in static molecular design principles. Here, we report a dynamic approach to construct bipolar materials using only electron-donating carbazoles connected by N-P=X resonance linkages in a donor-resonance-donor (D-r-D) structure. By facilitating the stimuli-responsive resonance variation, these D-r-D molecules exhibit extraordinary bipolar properties by positively charging one donor of carbazole in enantiotropic N+=P-X- canonical forms for electron transport without the involvement of any acceptors. With thus realized efficient and balanced charge transport, blue and deep-blue phosphorescent organic light emitting diodes hosted by these D-r-D molecules show high external quantum efficiencies up to 16.2% and 18.3% in vacuum-deposited and spin-coated devices, respectively. These results via the D-r-D molecular design strategy represent an important concept advance in constructing bipolar organic optoelectronic semiconductors dynamically for high-performance device applications.
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Affiliation(s)
- He Jiang
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Jibiao Jin
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Zijie Wang
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Wuji Wang
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Runfeng Chen
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Ye Tao
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Qin Xue
- Department of Physical Science and Technology, Central China Normal University, Wuhan 430079, China
| | - Chao Zheng
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Guohua Xie
- Sauvage Center for Molecular Sciences, Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Wei Huang
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
- Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an 710072, China
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11
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Highly distorted bipolar host material based on benzimidazole and indole derivative for efficient green and red solution-processed PhOLEDs. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Rodella F, Bagnich S, Duda E, Meier T, Kahle J, Athanasopoulos S, Köhler A, Strohriegl P. High Triplet Energy Host Materials for Blue TADF OLEDs-A Tool Box Approach. Front Chem 2020; 8:657. [PMID: 32850669 PMCID: PMC7403631 DOI: 10.3389/fchem.2020.00657] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 06/23/2020] [Indexed: 11/13/2022] Open
Abstract
The synthesis of stable blue TADF emitters and the corresponding matrix materials is one of the biggest challenges in the development of novel OLED materials. We present six bipolar host materials based on triazine as an acceptor and two types of donors, namely, carbazole, and acridine. Using a tool box approach, the chemical structure of the materials is changed in a systematic way. Both the carbazole and acridine donor are connected to the triazine acceptor via a para- or a meta-linked phenyl ring or are linked directly to each other. The photophysics of the materials has been investigated in detail by absorption-, fluorescence-, and phosphorescence spectroscopy in solution. In addition, a number of DFT calculations have been made which result in a deeper understanding of the photophysics. The presence of a phenyl bridge between donor and acceptor cores leads to a considerable decrease of the triplet energy due to extension of the overlap electron and hole orbitals over the triazine-phenyl core of the molecule. This decrease is more pronounced for the para-phenylene than for the meta-phenylene linker. Only direct connection of the donor group to the triazine core provides a high energy of the triplet state of 2.97 eV for the carbazole derivative CTRZ and 3.07 eV for the acridine ATRZ. This is a major requirement for the use of the materials as a host for blue TADF emitters.
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Affiliation(s)
- Francesco Rodella
- Macromolecular Chemistry I, University of Bayreuth, Bayreuth, Germany
| | - Sergey Bagnich
- Soft Matter Optoelectronics, University of Bayreuth, Bayreuth, Germany
| | - Eimantas Duda
- Soft Matter Optoelectronics, University of Bayreuth, Bayreuth, Germany
| | - Tobias Meier
- Soft Matter Optoelectronics, University of Bayreuth, Bayreuth, Germany
| | - Julian Kahle
- Soft Matter Optoelectronics, University of Bayreuth, Bayreuth, Germany
| | | | - Anna Köhler
- Soft Matter Optoelectronics, University of Bayreuth, Bayreuth, Germany
- Bayreuth Institute of Macromolecular Research (BIMF), University of Bayreuth, Bayreuth, Germany
| | - Peter Strohriegl
- Macromolecular Chemistry I, University of Bayreuth, Bayreuth, Germany
- Bayreuth Institute of Macromolecular Research (BIMF), University of Bayreuth, Bayreuth, Germany
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13
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Song W, Xu Q, Zhu J, Chen Y, Mu H, Huang J, Su J. Imidazo[1,2- b]pyridazine as Building Blocks for Host Materials for High-Performance Red-Phosphorescent Organic Light-Emitting Devices. ACS APPLIED MATERIALS & INTERFACES 2020; 12:19701-19709. [PMID: 32267666 DOI: 10.1021/acsami.9b22060] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A novel electron-transporting unit, imidazo [1,2-b]pyridazine (IP), was first reported for developing host materials. The IP moiety possesses excellent electron-transporting ability and great thermal stability. Using carbazole as p-type units and IP as n-type units, several bipolar host materials, namely, IP6Cz, IP68Cz, IP36Cz, and IP368Cz, were developed through altering the substitution site of the IP core. Among these four materials, 6-site-substituted IP6Cz and 6,8-site-substituted IP68Cz exhibit the best electroluminescence (EL) performance. IP6Cz- and IP68Cz-based red phosphorescent organic light-emitting diodes using Ir(pq)2acac as the emitter exhibit extremely high EL efficiency with the maximum external quantum efficiency (ηext,max) of 26.9 and 25.2% and an insignificant efficiency roll-off. Moreover, IP6Cz- and IP68Cz-based deep-red devices doped by Ir(piq)2acac also show satisfactory EL performance with a ηext,max of 20.5 and 19.9%, respectively. The influence of different substitution sites of the IP core on the photophysical and electrochemical properties was systematically investigated. This study demonstrates that IP could be a first-rate electron-transporting unit for bipolar materials for red-emitting devices.
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Affiliation(s)
- Wenxuan Song
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Qihao Xu
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Jiangnan Zhu
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Yi Chen
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Haichuan Mu
- Department of Physics, School of Science, East China University of Science & Technology, Shanghai 200237, PR China
| | - Jinhai Huang
- Shanghai Taoe Chemical Technology Company, Ltd., Shanghai 200030, PR China
| | - Jianhua Su
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, P. R. China
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14
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Chen M, Zhao Y, Tang Z, Zhang B, Wei B. Multifunctional Organic Emitters for High‐Performance and Low‐Cost Organic Light‐Emitting Didoes. CHEM REC 2019; 19:1768-1778. [DOI: 10.1002/tcr.201900005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 04/02/2019] [Accepted: 04/03/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Minyu Chen
- Microelectronic R&D Center, School of Mechatronic Engineering and AutomationShanghai University 149 Yanchang Road Shanghai 200072 P. R. China
| | - Yi Zhao
- Microelectronic R&D Center, School of Mechatronic Engineering and AutomationShanghai University 149 Yanchang Road Shanghai 200072 P. R. China
| | - Zhenyu Tang
- Microelectronic R&D Center, School of Mechatronic Engineering and AutomationShanghai University 149 Yanchang Road Shanghai 200072 P. R. China
| | - Bin Zhang
- College of Chemistry and Molecular EngineeringZhengzhou University No.100 Science Avenue Zhengzhou 450001 P. R. China
| | - Bin Wei
- Microelectronic R&D Center, School of Mechatronic Engineering and AutomationShanghai University 149 Yanchang Road Shanghai 200072 P. R. China
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15
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Vigante B, Leitonas K, Volyniuk D, Andruleviciene V, Simokaitiene J, Ivanova A, Bucinskas A, Grazulevicius JV, Arsenyan P. Synthesis of Linear and V-Shaped Carbazolyl-Substituted Pyridine-3,5-dicarbonitriles Exhibiting Efficient Bipolar Charge Transport and E-Type Fluorescence. Chemistry 2019; 25:3325-3336. [PMID: 30536688 DOI: 10.1002/chem.201805323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 12/06/2018] [Indexed: 11/10/2022]
Abstract
With the aim of developing all-organic bipolar semiconductors with high charge mobility and efficient E-type fluorescence (so-called TADF) as environmentally friendly light-emitting materials for optoelectronic applications, four noble metals-free dyes with linear and V-shapes were designed using accepting pyridine-3,5-dicarbonitrile and donating carbazole units. By exploiting a donor-acceptor design strategy and using moieties with different donating and accepting abilities, TADF emitters with a wide variety of molecular weights were synthesized to achieve the optimum combination of charge-transporting and fluorescent properties in one TADF molecule. Depending on molecule structures, different TADF emitters capable of emitting in the range from 453 to 550 nm with photoluminescence quantum yields up to 98 % for the solutions in oxygen-free toluene were obtained. All compounds showed bipolar charge-transport. Hole mobility of 2.8×10-3 cm2 /Vs at 7×105 V cm-1 was observed for the compound containing two di-tert-butyl-substituted carbazole moieties. The compounds were tested in both non-doped and doped organic light-emitting diodes using different hosts. It was shown that the developed TADF emitters are suitable for different color devices with electroluminescence ranging from blue to yellow and with brightness, maximum current and external quantum efficiencies exceeding 10 000 cd m-2 , 15 cd/A, and 7 %, respectively.
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Affiliation(s)
- Brigita Vigante
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006, Riga, Latvia
| | - Karolis Leitonas
- Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu pl. 19, LT-50254, Kaunas, Lithuania
| | - Dmytro Volyniuk
- Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu pl. 19, LT-50254, Kaunas, Lithuania
| | - Viktorija Andruleviciene
- Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu pl. 19, LT-50254, Kaunas, Lithuania
| | - Jurate Simokaitiene
- Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu pl. 19, LT-50254, Kaunas, Lithuania
| | - Anna Ivanova
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006, Riga, Latvia
| | - Audrius Bucinskas
- Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu pl. 19, LT-50254, Kaunas, Lithuania
| | - Juozas V Grazulevicius
- Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu pl. 19, LT-50254, Kaunas, Lithuania
| | - Pavel Arsenyan
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006, Riga, Latvia
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16
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Recio J, Pérez-Redondo A, Alvarez-Builla J, Burgos C. Access to 2-substituted 1-pyridin-3-yl-β-carboline derivatives by intramolecular radical cyclization-ring opening-SNAr substitution. Org Chem Front 2019. [DOI: 10.1039/c9qo00944b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A new method for the synthesis of 1-pyridin-3-yl-β-carboline derivatives involving an intramolecular radical reaction and SNAr substitution, is described.
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Affiliation(s)
- Javier Recio
- Departamento de Química Orgánica y Química Inorgánica and Instituto de Investigación Química "Andrés M. del Río" (IQAR)
- Universidad de Alcalá
- 28805-Alcalá de Henares
- Madrid
- Spain
| | - Adrián Pérez-Redondo
- Departamento de Química Orgánica y Química Inorgánica and Instituto de Investigación Química "Andrés M. del Río" (IQAR)
- Universidad de Alcalá
- 28805-Alcalá de Henares
- Madrid
- Spain
| | - Julio Alvarez-Builla
- Departamento de Química Orgánica y Química Inorgánica and Instituto de Investigación Química "Andrés M. del Río" (IQAR)
- Universidad de Alcalá
- 28805-Alcalá de Henares
- Madrid
- Spain
| | - Carolina Burgos
- Departamento de Química Orgánica y Química Inorgánica and Instituto de Investigación Química "Andrés M. del Río" (IQAR)
- Universidad de Alcalá
- 28805-Alcalá de Henares
- Madrid
- Spain
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17
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Ye Z, Ling Z, Chen M, Yang J, Wang S, Zheng Y, Wei B, Li C, Chen G, Shi Y. Low energy consumption phosphorescent organic light-emitting diodes using phenyl anthracenone derivatives as the host featuring bipolar and thermally activated delayed fluorescence. RSC Adv 2019; 9:6881-6889. [PMID: 35518466 PMCID: PMC9061084 DOI: 10.1039/c8ra10658d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Accepted: 02/22/2019] [Indexed: 11/21/2022] Open
Abstract
A bipolar host material 10-(4-(5,5-dimethylbenzofuro[3,2-c]acridin-13(5H)-yl)phenyl)-10-phenylanthracen-9(10H)-one (DphAn-5BzAc) with TADF properties, has been synthesized.
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Affiliation(s)
- Zhonghua Ye
- School of Materials Science and Engineering
- Shanghai University
- Shanghai 200072
- P. R. China
| | - Zhitian Ling
- School of Materials Science and Engineering
- Shanghai University
- Shanghai 200072
- P. R. China
| | - Minyu Chen
- Key Laboratory of Advanced Display and System Applications
- Ministry of Education
- Shanghai University
- Shanghai
- P. R. China
| | - Jiali Yang
- Key Laboratory of Advanced Display and System Applications
- Ministry of Education
- Shanghai University
- Shanghai
- P. R. China
| | - Shuanglong Wang
- Key Laboratory of Advanced Display and System Applications
- Ministry of Education
- Shanghai University
- Shanghai
- P. R. China
| | - Yanqiong Zheng
- Key Laboratory of Advanced Display and System Applications
- Ministry of Education
- Shanghai University
- Shanghai
- P. R. China
| | - Bin Wei
- Key Laboratory of Advanced Display and System Applications
- Ministry of Education
- Shanghai University
- Shanghai
- P. R. China
| | - Chong Li
- Nanjing University of Technology
- Nanjing 211816
- P. R. China
| | - Guo Chen
- Key Laboratory of Advanced Display and System Applications
- Ministry of Education
- Shanghai University
- Shanghai
- P. R. China
| | - Ying Shi
- School of Materials Science and Engineering
- Shanghai University
- Shanghai 200072
- P. R. China
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18
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Luo D, Xiao P, Liu B. Doping-Free White Organic Light-Emitting Diodes. CHEM REC 2018; 19:1596-1610. [PMID: 30548958 DOI: 10.1002/tcr.201800147] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/28/2018] [Indexed: 11/11/2022]
Abstract
Doping-free white organic light-emitting diodes (WOLEDs) have great potential to the next-generation solid-state lighting and displays due to the excellent properties, such as high efficiency, bright luminance, low power consumption, simplified structure and low cost. In this account, our recent developments on doping-free WOLEDs have been summarized. Firstly, fundamental concepts of doping-free WOLEDs have been described. Then, the effective strategies to develop doping-free WOLEDs have been presented. Particularly, the manipulation of charges and excitons distribution in different kinds of doping-free WOLEDs have been highlighted, including doping-free fluorescent/phosphorescent hybrid WOLEDs, doping-free thermally activated delayed fluorescent WOLEDs and doping-free phosphorescent WOLEDs. In the end, an outlook for the future development of doping-free WOLEDs have been clarified.
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Affiliation(s)
- Dongxiang Luo
- School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China
| | - Peng Xiao
- School of Physics and Optoelectronic Engineering, Foshan University, Foshan, 528000, China
| | - Baiquan Liu
- LUMINOUS!, Centre of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore.,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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19
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Wang Z, Su S. Molecular and Device Design Strategies for Ideal Performance White Organic Light‐Emitting Diodes. CHEM REC 2018; 19:1518-1530. [DOI: 10.1002/tcr.201800138] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 11/14/2018] [Indexed: 02/03/2023]
Affiliation(s)
- Zhiheng Wang
- State Key Laboratory of Luminescent Materials and Devices and Institute of Polymer Optoelectronic Materials and DevicesSouth China University of Technology Guangzhou 510640 China
| | - Shi‐Jian Su
- State Key Laboratory of Luminescent Materials and Devices and Institute of Polymer Optoelectronic Materials and DevicesSouth China University of Technology Guangzhou 510640 China
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20
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Konidena RK, Lee JY. Molecular Design Tactics for Highly Efficient Thermally Activated Delayed Fluorescence Emitters for Organic Light Emitting Diodes. CHEM REC 2018; 19:1499-1517. [DOI: 10.1002/tcr.201800136] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 10/10/2018] [Indexed: 01/15/2023]
Affiliation(s)
- Rajendra Kumar Konidena
- School of Chemical EngineeringSungkyunkwan University 2066 Seobu-ro, Jangan-gu, Suwon Gyeonggi Korea
| | - Jun Yeob Lee
- School of Chemical EngineeringSungkyunkwan University 2066 Seobu-ro, Jangan-gu, Suwon Gyeonggi Korea
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21
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Im Y, Han SH, Lee JY. Bipolar type indolocarbazole host for green phosphorescent organic light-emitting diodes. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.06.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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22
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Wu Q, Zhang HQ, Ramanaskanda B, Chai KY. Crystal structure of 2,5-bis(4-(10 H-phenothiazin-10-yl)phenyl)-1,3,4-oxadiazole, C 38H 24N 4OS 2. Z KRIST-NEW CRYST ST 2018. [DOI: 10.1515/ncrs-2018-0064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C38H24N4OS2, monoclinic, P21/c (no. 14), a = 10.9621(6) Å, b = 19.7851(11) Å, c = 14.1928(9) Å, β = 100.957(6)°, V = 3022.1(3) Å3, Z = 4, R
gt(F) = 0.0528, wR
ref(F
2) = 0.1294, T = 172.99(10) K.
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Affiliation(s)
- Qiong Wu
- Division of Bio-Nanochemistry, College of Natural Sciences , Wonkwang University , Iksan City, Chonbuk, 570-749 , Republic of Korea
- Department of Chemistry , Hebei Normal University for Nationalities , Chengde 067000 , P.R. China
| | - Heng-Qiang Zhang
- Department of Chemistry , Hebei Normal University for Nationalities , Chengde 067000 , P.R. China
| | - Braveenth Ramanaskanda
- Division of Bio-Nanochemistry, College of Natural Sciences , Wonkwang University , Iksan City, Chonbuk, 570-749 , Republic of Korea
| | - Kyu-Yun Chai
- Division of Bio-Nanochemistry, College of Natural Sciences , Wonkwang University , Iksan City, Chonbuk, 570-749 , Republic of Korea
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23
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Liu X, Ma Y, Zhang W, Song B, Ding L, Fung M, Fan J. A Novel Linking Strategy of Using 9,10‐Dihydroacridine to Construct Efficient Host Materials for Red Phosphorescent Organic Light‐Emitting Diodes. Chemistry 2018; 24:11755-11762. [DOI: 10.1002/chem.201802030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 05/17/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Xiang‐Yang Liu
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesInstitute of Functional Nano and Soft Materials (FUNSOM)Soochow University Suzhou Jiangsu 215123 China
| | - Yu‐Yang Ma
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesInstitute of Functional Nano and Soft Materials (FUNSOM)Soochow University Suzhou Jiangsu 215123 China
| | - Wenjuan Zhang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesInstitute of Functional Nano and Soft Materials (FUNSOM)Soochow University Suzhou Jiangsu 215123 China
| | - Bo Song
- College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 China
| | - Lei Ding
- College of Electrical and Information EngineeringShaanxi University of Science and Technology Xi'an Shaanxi 710021 China
| | - Man‐Keung Fung
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesInstitute of Functional Nano and Soft Materials (FUNSOM)Soochow University Suzhou Jiangsu 215123 China
| | - Jian Fan
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesInstitute of Functional Nano and Soft Materials (FUNSOM)Soochow University Suzhou Jiangsu 215123 China
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24
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Grybauskaite-Kaminskiene G, Volyniuk D, Mimaite V, Bezvikonnyi O, Bucinskas A, Bagdziunas G, Grazulevicius JV. Aggregation-Enhanced Emission and Thermally Activated Delayed Fluorescence of Derivatives of 9-Phenyl-9H
-Carbazole: Effects of Methoxy and tert
-Butyl Substituents. Chemistry 2018; 24:9581-9591. [DOI: 10.1002/chem.201800822] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 04/01/2018] [Indexed: 01/21/2023]
Affiliation(s)
| | - Dmytro Volyniuk
- Department of Polymer Chemistry and Technology; Kaunas University of Technology; Radvilenu pl. 19 LT-50254 Kaunas Lithuania
| | - Viktorija Mimaite
- Department of Polymer Chemistry and Technology; Kaunas University of Technology; Radvilenu pl. 19 LT-50254 Kaunas Lithuania
| | - Oleksandr Bezvikonnyi
- Department of Polymer Chemistry and Technology; Kaunas University of Technology; Radvilenu pl. 19 LT-50254 Kaunas Lithuania
| | - Audrius Bucinskas
- Department of Polymer Chemistry and Technology; Kaunas University of Technology; Radvilenu pl. 19 LT-50254 Kaunas Lithuania
| | - Gintautas Bagdziunas
- Department of Polymer Chemistry and Technology; Kaunas University of Technology; Radvilenu pl. 19 LT-50254 Kaunas Lithuania
| | - Juozas V. Grazulevicius
- Department of Polymer Chemistry and Technology; Kaunas University of Technology; Radvilenu pl. 19 LT-50254 Kaunas Lithuania
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25
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Wu Q, Braveenth R, Zhang HQ, Bae IJ, Kim M, Chai KY. Oxadiazole-Based Highly Efficient Bipolar Fluorescent Emitters for Organic Light-Emitting Diodes. Molecules 2018; 23:E843. [PMID: 29642430 PMCID: PMC6017916 DOI: 10.3390/molecules23040843] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 03/30/2018] [Accepted: 04/05/2018] [Indexed: 11/18/2022] Open
Abstract
In this study, a series of bipolar fluorescence emitters named 2DPAc-OXD, DPAc-OXD, 2PTZ-OXD and PTZ-OXD were designed and synthesized with excellent yields. The characterization of materials was investigated by using nuclear magnetic resonance (NMR) (¹H, 13C), mass spectrometry and thermogravimetric analysis (TGA). To investigate device efficiencies, two different OLED devices (Device 1, Device 2) were fabricated with two different host materials (Bepp₂, DPEPO). The Device 2 with 2PTZ-OXD as fluorescent emitter exhibited excellent power and current efficiencies of 6.88 Lm/W and 10.10 cd/A, respectively. The external quantum efficiency of 2PTZ-OXD was around 3.99% for Device 2. The overall device properties of phenothiazine donor were better than acridine derivatives.
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Affiliation(s)
- Qiong Wu
- Division of Bio-Nanochemistry, College of Natural Sciences, Wonkwang University Iksan City, Chonbuk 570-749, Korea.
- Department of Chemistry, Hebei Normal University for Nationalities, Chengde 067000, China.
| | - Ramanaskanda Braveenth
- Division of Bio-Nanochemistry, College of Natural Sciences, Wonkwang University Iksan City, Chonbuk 570-749, Korea.
| | - Heng Qiang Zhang
- Department of Chemistry, Hebei Normal University for Nationalities, Chengde 067000, China.
| | - Il-Ji Bae
- Nano-Convergence Research Center, Korea Electronics Technology Institute, Jeonju 54853, Korea.
| | - Miyoung Kim
- Nano-Convergence Research Center, Korea Electronics Technology Institute, Jeonju 54853, Korea.
| | - Kyu Yun Chai
- Division of Bio-Nanochemistry, College of Natural Sciences, Wonkwang University Iksan City, Chonbuk 570-749, Korea.
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26
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Peltier JD, Heinrich B, Donnio B, Jeannin O, Rault-Berthelot J, Poriel C. Modulating the Physical and Electronic Properties over Positional Isomerism: The Dispirofluorene-Dihydroindacenodithiophene (DSF-IDT) Family. Chemistry 2017; 23:17290-17303. [DOI: 10.1002/chem.201703320] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Indexed: 01/09/2023]
Affiliation(s)
| | - Benoît Heinrich
- Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504; CNRS-Université de Strasbourg; 23 rue du Loess, BP 43 67034 Strasbourg Cédex 2 France
| | - Bertrand Donnio
- Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504; CNRS-Université de Strasbourg; 23 rue du Loess, BP 43 67034 Strasbourg Cédex 2 France
| | - Olivier Jeannin
- UMR CNRS 6226-ISCR; Université de Rennes 1; 35042 Rennes cedex France
| | | | - Cyril Poriel
- UMR CNRS 6226-ISCR; Université de Rennes 1; 35042 Rennes cedex France
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27
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Kim SM, Yun JH, Byeon SY, Jeon SK, Lee JY. Effect of interconnection position of bicarbazole-triazine type bipolar host materials on the photophysical and device performances. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.03.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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28
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Wong MY, Zysman-Colman E. Purely Organic Thermally Activated Delayed Fluorescence Materials for Organic Light-Emitting Diodes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1605444. [PMID: 28256751 DOI: 10.1002/adma.201605444] [Citation(s) in RCA: 774] [Impact Index Per Article: 110.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Revised: 11/22/2016] [Indexed: 05/24/2023]
Abstract
The design of thermally activated delayed fluorescence (TADF) materials both as emitters and as hosts is an exploding area of research. The replacement of phosphorescent metal complexes with inexpensive organic compounds in electroluminescent (EL) devices that demonstrate comparable performance metrics is paradigm shifting, as these new materials offer the possibility of developing low-cost lighting and displays. Here, a comprehensive review of TADF materials is presented, with a focus on linking their optoelectronic behavior with the performance of the organic light-emitting diode (OLED) and related EL devices. TADF emitters are cross-compared within specific color ranges, with a focus on blue, green-yellow, orange-red, and white OLEDs. Organic small-molecule, dendrimer, polymer, and exciplex emitters are all discussed within this review, as is their use as host materials. Correlations are provided between the structure of the TADF materials and their optoelectronic properties. The success of TADF materials has ushered in the next generation of OLEDs.
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Affiliation(s)
- Michael Y Wong
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - Eli Zysman-Colman
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
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29
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Kong FKW, Tang MC, Wong YC, Ng M, Chan MY, Yam VWW. Strategy for the Realization of Efficient Solution-Processable Phosphorescent Organic Light-Emitting Devices: Design and Synthesis of Bipolar Alkynylplatinum(II) Complexes. J Am Chem Soc 2017; 139:6351-6362. [PMID: 28453263 DOI: 10.1021/jacs.7b00479] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A new class of highly luminescent bipolar alkynylplatinum(II) complexes has been synthesized, characterized, and applied as phosphorescent dopants in the fabrication of solution-processable organic light-emitting devices (OLEDs). Through the incorporation of a delicate balance of electron-donating carbazole moieties and electron-accepting phenylbenzimidazole or oxadiazole moieties into the platinum(II) core, the platinum(II) complexes have been demonstrated to exhibit bipolar charge transport character with high photoluminescence quantum yields of up to 0.75 in thin films. The introduction of meta-linkages into the complexes further helps weaken the donor-acceptor interactions, facilitating better carrier-transporting abilities. More importantly, high-performance solution-processable green-emitting OLEDs with maximum current efficiencies of up to 57.4 cd A-1 and external quantum efficiencies of up to 16.0% have been realized. This is among the best performances for solution-processable phosphorescent OLEDs reported based on platinum(II) complexes as well as bipolar metal complexes.
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Affiliation(s)
- Fred Ka-Wai Kong
- Department of Chemistry, The University of Hong Kong , Pokfulam Road, Hong Kong, P. R. China
| | - Man-Chung Tang
- Department of Chemistry, The University of Hong Kong , Pokfulam Road, Hong Kong, P. R. China
| | - Yi-Chun Wong
- Department of Chemistry, The University of Hong Kong , Pokfulam Road, Hong Kong, P. R. China
| | - Maggie Ng
- Department of Chemistry, The University of Hong Kong , Pokfulam Road, Hong Kong, P. R. China
| | - Mei-Yee Chan
- Department of Chemistry, The University of Hong Kong , Pokfulam Road, Hong Kong, P. R. China
| | - Vivian Wing-Wah Yam
- Department of Chemistry, The University of Hong Kong , Pokfulam Road, Hong Kong, P. R. China
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30
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Kim DY, Kang J, Lee SE, Kim YK, Yoon SS. Blue organic light-emitting diodes based on fluorene-bridged quinazoline and quinoxaline derivatives. LUMINESCENCE 2017; 32:1180-1185. [PMID: 28422435 DOI: 10.1002/bio.3307] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 11/30/2016] [Accepted: 02/08/2017] [Indexed: 11/09/2022]
Abstract
Two blue emitters based on fluorene-bridged quinazoline and quinoxaline derivatives were prepared via the Suzuki reaction. Their photoluminescent properties were investigated. Furthermore, theoretical studies on these materials using the density functional theory calculation were conducted. To explore their electroluminescent properties, multilayered organic light-emitting diodes were fabricated with the following device structure: indium-tin-oxide (180 nm)/4,4'-bis(N-(1-naphthyl)-N-phenylamino)biphenyl (50 nm)/blue emitting materials (1 and 2) (30 nm)/bathophenanthroline (35 nm)/8-hydroxy-quinolinato lithium (2 nm)/Al (100 nm). Two devices showed efficient blue emission with the external quantum efficiencies of 1.58% and 1.30%, respectively, at 20 mA/cm2 , and Commission Internationale dÉclairage coordinates of (0.18, 0.24) and (0.19, 0.27) at 6.0 V. These results suggest that the self-aggregation properties of emitters would have considerable effects on their photoluminescent and electroluminescent properties.
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Affiliation(s)
- Dong Young Kim
- Department of Chemistry, Sungkyunkwan University, Suwon, Republic of Korea
| | - Jisu Kang
- Department of Chemistry, Sungkyunkwan University, Suwon, Republic of Korea
| | - Song Eun Lee
- Department of Information Display, Hongik University, Seoul, Republic of Korea
| | - Young Kwan Kim
- Department of Information Display, Hongik University, Seoul, Republic of Korea
| | - Seung Soo Yoon
- Department of Chemistry, Sungkyunkwan University, Suwon, Republic of Korea
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Yang Z, Mao Z, Xie Z, Zhang Y, Liu S, Zhao J, Xu J, Chi Z, Aldred MP. Recent advances in organic thermally activated delayed fluorescence materials. Chem Soc Rev 2017; 46:915-1016. [DOI: 10.1039/c6cs00368k] [Citation(s) in RCA: 1413] [Impact Index Per Article: 201.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Thermally activated delayed fluorescence: harvesting dark triplet excitons to generate bright emissive singlet excitons.
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Affiliation(s)
- Zhiyong Yang
- PCFM Lab
- GD HPPC Lab
- Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films
- State Key Laboratory of Optoelectronic Material and Technologies
- School of Chemistry
| | - Zhu Mao
- PCFM Lab
- GD HPPC Lab
- Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films
- State Key Laboratory of Optoelectronic Material and Technologies
- School of Chemistry
| | - Zongliang Xie
- PCFM Lab
- GD HPPC Lab
- Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films
- State Key Laboratory of Optoelectronic Material and Technologies
- School of Chemistry
| | - Yi Zhang
- PCFM Lab
- GD HPPC Lab
- Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films
- State Key Laboratory of Optoelectronic Material and Technologies
- School of Chemistry
| | - Siwei Liu
- PCFM Lab
- GD HPPC Lab
- Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films
- State Key Laboratory of Optoelectronic Material and Technologies
- School of Chemistry
| | - Juan Zhao
- PCFM Lab
- GD HPPC Lab
- Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films
- State Key Laboratory of Optoelectronic Material and Technologies
- School of Chemistry
| | - Jiarui Xu
- PCFM Lab
- GD HPPC Lab
- Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films
- State Key Laboratory of Optoelectronic Material and Technologies
- School of Chemistry
| | - Zhenguo Chi
- PCFM Lab
- GD HPPC Lab
- Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films
- State Key Laboratory of Optoelectronic Material and Technologies
- School of Chemistry
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